Powered by Deep Web Technologies
Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Lighting Control Systems  

Science Conference Proceedings (OSTI)

The demand for lighting control systems in residential, commercial, and industrial facilities is on the rise with the demand for increased energy savings. With lighting accounting for almost 23% of grid load, there is significant opportunity to reduce lighting load while improving the quality of light for customers. Lighting control systems are becoming more intelligent as the need for them to interface with building control systems and demand response systems also increases. Lighting control systems use...

2009-12-17T23:59:59.000Z

2

System Compatibility of Modern Lighting Control Systems  

Science Conference Proceedings (OSTI)

The state of the energy industry combined with growing economic pressures will drive accelerated use of energy-efficient dimmable lighting devices and control systems. While penetration and application will be different across customer sectors, the goal is to dynamically reduce lighting load without compromising productivity and the quality of light and life in a timely manner. Continual improvement of dimmable devices and controls is paramount to achieving that goal. EPRI research concepts in system com...

2011-10-11T23:59:59.000Z

3

Lighting Group: Controls: Systems Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Integration Building Control Systems Integration Objective This research project investigates how diverse building control systems can be integrated to provide seamless...

4

System Compatibility of Modern Lighting Control Systems  

Science Conference Proceedings (OSTI)

Development of lighting control technologies continues at rapid rates in efforts to reduce energy usage and improve quality of light and color. Utilities, efficiency engineers, and end users should be aware of emissions and immunity performance of a lighting device before it is accepted for use in incentive and rebate programs prior to deployment in customer facilities. Continuing its efforts in evaluating new lighting control technologies, EPRI, within its Program 170, has tested four lighting control p...

2010-12-23T23:59:59.000Z

5

A New Digital Lighting Control System  

NLE Websites -- All DOE Office Websites (Extended Search)

A New Digital Lighting Control System A New Digital Lighting Control System Speaker(s): Charles Knuffke Date: June 29, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Francis Rubinstein When various Lighting Controls components are discussed, they're usually slotted into separate "silos" - Occupancy Sensors, Relay Panels, Dimming Controls, and Daylighting Controls. Trying to combine two or more of these into a single system usually requires a fair amount of technical expertise and often help from different manufacturers. Combine that with the need under LEED to get these systems commissioned, often without detailed sequence of operation information, and that helps to explains why many view Lighting Controls as overly complex. And try to integrate the Lighting Controls into a larger overall building management system so their

6

System Compatibility of Modern Lighting Control Systems  

Science Conference Proceedings (OSTI)

Energy-saving lighting control technologies are valuable tools for reducing the amount of electricity required to deliver sufficient light levels to consumers. Many new lighting controls have been developed in recent years which provide users with a wide variety of features past ON and OFF switching. Such features include but are not limited to: scheduled dimming, lumen sensing, wireless control, demand response, color temperature adjustment, and bi-level dimming.  These features provide ...

2012-12-31T23:59:59.000Z

7

Innovative Lighting-Control and Demand-Response Systems  

Science Conference Proceedings (OSTI)

This EPRI technical update continues the technical assessment of modern lighting-control and demand-response (DR) systems in the following product areas: programmable timer switches, scalable lighting-control systems, Zigbee-based add-on control systems, and Z-Wave–based lighting controllers. This research helps to demonstrate that there is a wide variety of advanced lighting controls entering the marketplace each year, and it describes how they respond to a range of DR and power-quality ...

2013-12-12T23:59:59.000Z

8

Reviewing the role of photosensors in lighting control systems  

Science Conference Proceedings (OSTI)

The application of innovative technologies of automatic control in lighting systems gains daily the interest of engineers, constructors and users. The main purpose of these applications is the energy savings. Daylight control is a form of automatic control ... Keywords: daylight, lighting controls, photosensor

L. Doulos; A. Tsangrassoulis; F. V. Topalis

2007-05-01T23:59:59.000Z

9

Market transformation opportunities for emerging dynamic facade and dimmable lighting control systems  

E-Print Network (OSTI)

Dynamic Façade and Dimmable Lighting Control Systems Eleanorand integrated façade and lighting system that operatesof these cases, electric lighting should be controlled to

Lee, Eleanor S.; Selkowitz, Stephen E.; Hughes, Glenn D.; Thurm, David A.

2004-01-01T23:59:59.000Z

10

Performance modeling of daylight integrated photosensor-controlled lighting systems  

Science Conference Proceedings (OSTI)

Some building energy codes now require the incorporation of daylight into buildings and automatic photosensor-controlled switching or dimming of the electric lighting system in areas that receive daylight. This paper describes enhancements to the open-source ...

Richard G. Mistrick; Craig A. Casey

2011-12-01T23:59:59.000Z

11

Status report on the Advanced Light Source control system  

SciTech Connect

This paper is a status report on the ADVANCED LIGHT SOURCE (ALS) control system. The current status, performance data, and future plans will be discussed. Manpower, scheduling, and costs issues are addressed.

Magyary, S.; Chin, M.; Fahmie, M.; Lancaster, H.; Molinari, P.; Robb, A.; Timossi, C.; Young, J.

1991-11-11T23:59:59.000Z

12

Lighting Control System - Phase Cut Carrier  

Berkeley Lab researchers estimate that the system would cost about a dollar per square foot to install in existing ... of 20 cents per square foot per ...

13

Lighting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

14

Lighting Group: Controls: Wireless Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

Wireless Controls Wireless Lighting Control System (with DUST Networks) Objective The project objectives are to: 1. Demonstrate that wireless technology can be cost-effectively...

15

Incoherent light as a control resource: a route to complete controllability of quantum systems  

E-Print Network (OSTI)

We discuss the use of incoherent light as a resource to control the atomic dynamics and review the proposed in Phys. Rev. A 84, 042106 (2011) method for a controlled transfer between any pure and mixed states of quantum systems using a combination of incoherent and coherent light. Formally, the method provides a constructive proof for an approximate open-loop Markovian state-transfer controllability of quantum system in the space of all density matrices---the strongest possible degree of quantum state control.

Alexander Pechen

2012-12-10T23:59:59.000Z

16

System and Battery Charge Control for PV-Powered AC Lighting Systems  

DOE Green Energy (OSTI)

This report reviews a number of issues specific to stand-alone AC lighting systems. A review of AC lighting technology is presented, which discusses the advantages and disadvantages of various lamps. The best lamps for small lighting systems are compact fluorescent. The best lamps for intermediate-size systems are high- or low-pressure sodium. Specifications for battery charging and load control are provided with the goal of achieving lamp lifetimes on the order of 16,000 to 24,000 hours and battery lifetimes of 4 to 5 years. A rough estimate of the potential domestic and global markets for stand-alone AC lighting systems is presented. DC current injection tests were performed on high-pressure sodium lamps and the test results are presented. Finally, a prototype system was designed and a prototype system controller (with battery charger and DC/AC inverter) was developed and built.

Kern, G.

1999-04-01T23:59:59.000Z

17

Automatic lighting controls demonstration  

SciTech Connect

The purpose of this work was to demonstrate, in a real building situation, the energy and peak demand reduction capabilities of an electronically ballasted lighting control system that can utilize all types of control strategies to efficiently manage lighting. The project has demonstrated that a state-of-the-art electronically ballasted dimmable lighting system can reduce energy and lighting demand by as least 50% using various combinations of control strategies. By reducing light levels over circulation areas (tuning) and reducing after hours light levels to accommodate the less stringent lighting demands of the cleaning crew (scheduling), lighting energy consumption on weekdays was reduced an average of 54% relative to the initial condition. 10 refs., 14 figs., 3 tabs.

Rubinstein, F.; Verderber, R.

1990-03-01T23:59:59.000Z

18

Lighting Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

corridors. The overall range of savings was six to 80 percent. The Advanced Lighting Guidelines On-Line Edition New Buildings Institute 2011 presents a table of lighting energy...

19

Design of a Personalized Lighting Control System Enabled by a Space Model  

E-Print Network (OSTI)

This paper reports on a research effort to develop a prototype of a personalized lighting control system that adjusts the visual environment based on user preferences. Lighting controllers query a space model to retrieve lighting objects that are near given user locations and map user preferences into control actions for these lighting objects. A user scenario illustrates the concept of personalized lighting control. The scenario is used to develop functional and non-functional system requirements which inform system design. The structure of a proposed space model and space model queries are described and illustrated with examples. Implementation environments for system modules and data communication between modules are discussed. System and user tests are outlined that will be performed for initial feedback on the feasibility of personalized lighting control.

Suter, G.; Petrushevski, F.; Sipetic, M.

2011-01-01T23:59:59.000Z

20

Lighting Group: Controls: Advanced Digital Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Digital Controls Advanced Digital Controls HPCBS Advanced Digital Controls Objective The goal of this project is to hasten the adoption of digital lighting control systems to allow commercial building operators to optimize the neergy performance of their lighting systems, implement demand responsive control, and improve occupant comfort and productivity. The specific objectives are as follows: (1) Advance the adoption of digital lighting control systems by working with industry to embed IBECS technology into existing analog control and DALI products, and by developing compelling demonstrations of digital control systems for evaluation by early adopters. (2) In collaboration with equipment manufacturers, produce digital lighting system prototypes that demonstrate the advantages of digitally controlled lighting systems to innovative property managers and other energy stakeholders. A digitally controlled lighting system consists of lights that are individually controllable via a network. The advantages of digital control are:

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Daylighting: Measuring the Performance of Light Shelves and Occupant-Controlled Blinds on a Dimmed Lighting Systems  

E-Print Network (OSTI)

The design of a day lighted space is both an art and a science. The biggest challenge facing the lighting designer is to admit only as much light as necessary and distribute it evenly throughout the space without introducing glare or heat. In warm climates such as Florida, it has become common practice in windowed spaces to specify blinds and glazing with high shading coefficients to control glare and minimize heat gain. However, this practice reduces the effectiveness of lighting systems that dim automatically. Improved systems are needed to capture natural daylight and distribute it uniformly throughout a space while controlling heat gain and glare. One such system is the light shelf. Light shelves shade the space from direct sunlight and reflect this sunlight onto the ceiling for a deeper and more uniform distribution. While this is not a new idea, little unbiased empirical data has been collected, outside the laboratory, that compares the performance (energy savings, uniformity, and level) of an automatic daylighting system. This study measures the effectiveness of light shelves and manually controlled horizontal blinds in an automatic daylighting system. Power consumption and interior work-plane lighting levels were compared in four essentially identical private offices. Two offices were configured with an interior light shelf, one with a white diffuse top surface and the other with a specular surface. The third office had no window treatment and the fourth office had horizontal blinds, which were manually adjusted by the user. All offices had two lamp fluorescent luminaires with dimming ballasts (min. 20%) controlled by a ceiling mounted photosensor. The study showed that daytime savings ranged from 29% to 46%, with the largest savings from the office with the light shelves. The office with horizontal blinds showed the poor savings (32%) and also the poorest light uniformity and level.

Floyd, D. B.; Parker, D. S.

1998-01-01T23:59:59.000Z

22

Lighting Group: Controls: IBECS  

NLE Websites -- All DOE Office Websites (Extended Search)

IBECS IBECS Integrated Building Environmental Communications System Objective The overall technical goal of the IBECS project is to develop an integrated building equipment communications network that will allow appropriate automation of lighting and envelope systems to increase energy efficiency, improve building performance, and enhance occupant experience in the space. This network will provide a low-cost means for occupants to control local lighting and window systems, thereby improving occupant comfort, satisfaction and performance. A related goal is to improve existing lighting control components and accelerate development of new daylighting technologies that will allow daylighting to be more extensively applied to a larger proportion of building floor space.

23

LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL  

E-Print Network (OSTI)

REFERENCES Task Report to Lighting Systems Research,Berkeley Laboratory, "Lighting Control System Market1980). Task Report to Lighting Systems Research, Lawrence

Verderber, R.R.

2010-01-01T23:59:59.000Z

24

Controlling of grid connected photovoltaic lighting system with fuzzy logic  

SciTech Connect

In this study, DC electrical energy produced by photovoltaic panels is converted to AC electrical energy and an indoor area is illuminated using this energy. System is controlled by fuzzy logic algorithm controller designed with 16 rules. Energy is supplied from accumulator which is charged by photovoltaic panels if its energy would be sufficient otherwise it is supplied from grid. During the 1-week usage period at the semester time, 1.968 kWh energy is used from grid but designed system used 0.542 kWh energy from photovoltaic panels at the experiments. Energy saving is determined by calculations and measurements for one education year period (9 months) 70.848 kWh. (author)

Saglam, Safak; Ekren, Nazmi; Erdal, Hasan [Technical Education Faculty, Marmara University, Istanbul 34722 (Turkey)

2010-02-15T23:59:59.000Z

25

AUTOMATIC LIGHT CONTROL  

DOE Patents (OSTI)

A control system for a projection kinescope used in a facsimile scanning system and, in particular, meams for maintaining substantially constant the light emanating from the flying spot on the face of the kinescope are described. In general, the invention provides a feeler member disposed in such a position with respect to a projecting lens as to intercept a portion of the light striking the lens. Suitable circuitry in conjunction with a photomultiplier tube provides a signal proportional to the light intensity of the flying spot. The grid bias on the kinescope is controlled by this signal to maintain the intensity of the spot substantially constant.

Artzt, M.

1957-08-27T23:59:59.000Z

26

Lighting Group: Controls and Communications  

NLE Websites -- All DOE Office Websites (Extended Search)

Communications Communications Controls and Communications The Controls and Communications research activity investigates how digital technologies, such as Bluetooth, can be applied to building lighting control systems to increase building efficiency and improve occupant comfort and productivity. Projects range from embedded device networks applied to building lighting systems, to WiFi and environmental sensing and monitoring. light switch Current Projects IBECS (Integrated Building Environmental Communications System) Wireless Lighting Controls (with DUST Networks) HPCBS Advanced Digital Controls Building Control Systems Integration Completed Projects CEC Public Interest Energy Research (PIER) Projects 450 Golden Gate Project New Publications Standardizing Communication Between Lighting Devices: A Role for

27

Developing a dynamic envelope/lighting control system with field measurements  

SciTech Connect

The feasibility of an intelligent venetian blind/lighting control system was tested in a 1:3 scale model outdoors under variable sun and sky conditions. The control algorithm, block direct sun and meet the design workplane illuminance level, was implemented using commercially available and custom designed blind and lighting systems hardware. While blocking direct sunlight, the blinds were properly controlled to maintain the design workplane illuminance within a tolerance of -10%, +25% when there was sufficient daylight. When daylight levels alone were inadequate, the electric lighting control system maintained the design workplane illuminance. The electric lighting could be turned off if a user-specified time period at minimum power was exceeded. Lighting energy savings of 51-71% (southwest) and 37-75% (south) was attained for the period from 8:00 to 17:00 on clear sunny days, compared to a fixed, partially closed blind with the same lighting system. Practical details for implementation and commissioning are discussed. The impact of control variations, such as profile angle, time step interval, and control area, on energy demand is investigated.

DiBartolomeo, D.L.; Lee, E.S.; Rubinstein, F.M.; Selkowitz, S.E.

1996-05-01T23:59:59.000Z

28

Power Quality Hotline Call-of-the-Month for November 2009: Failure of a Lighting-Control System Caused by Electrical Fast Transients (EFTs)  

Science Conference Proceedings (OSTI)

This Call of the Month discusses the basics of lighting-control systems, a recent failure of a lighting-control system caused by a common electrical disturbance, and some solutions to resolving compatibility problems with lighting-control systems.

2009-12-11T23:59:59.000Z

29

Distributed Control for Smart Lighting.  

E-Print Network (OSTI)

??In this research, we investigate designing a smart lighting system. By extending and enhancing the centralized and distributed control algorithms we try to address the… (more)

Phadke, Swanand Shripad

2010-01-01T23:59:59.000Z

30

Lighting Group: Light Distribution Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Retrofit Alternatives to Incandescent Downlights Hotel and Institutional Bathroom Lighting Portable Office Lighting Systems Low Glare Outdoor Retrofit Luminaire LED Luminaires...

31

Economic analysis of the daylight-linked lighting control system in office buildings  

Science Conference Proceedings (OSTI)

The objective of this study is to perform an economic analysis of the daylight-linked automatic on/off lighting control system installed for the purpose of energy savings in office buildings. For this, a building was chosen as a typical example, and the energy cost was calculated by using the daylight and building energy analysis simulation. When the lighting control was utilized, an economic analysis was performed using a payback period that was calculated by comparing the initial cost of installing the lighting control system with the annual energy cost which was reduced thanks to the application of the lighting control. The results showed that the lighting energy consumption, when the lighting control was applied, was reduced by an average of 30.5% compared with the case that there was not lighting control applied. Also, the result for total energy consumption showed that, when lighting control was applied, this was reduced by 8.5% when the glazing ratio was 100%, 8.2% for 80%, and 7.6% for 60% when compared to non-application. The payback period was analyzed in terms of the number of floors in a building; 10 floors, 20 floors, 30 floors, and 40 floors. Hence, the building with 40 floors and glazing ratio 100% resulted in the shortest payback period of 8.8 years, the building with 10 floors and glazing ratio 60% resulted in the longest period of 12.7 years. In other words, the larger the glazing ratio and the number of building floors are, the shorter the payback period is. (author)

Yang, In-Ho; Nam, Eun-Ji [Department of Architectural Engineering, College of Engineering, Dongguk University, 26-3, Pil-dong, Chung-gu, Seoul 100-715 (Korea)

2010-08-15T23:59:59.000Z

32

Method and system for controlling the position of a beam of light  

SciTech Connect

An method and system for laser beam tracking and pointing is based on a conventional position sensing detector (PSD) or quadrant cell but with the use of amplitude-modulated light. A combination of logarithmic automatic gain control, filtering, and synchronous detection offers high angular precision with exceptional dynamic range and sensitivity, while maintaining wide bandwidth. Use of modulated light enables the tracking of multiple beams simultaneously through the use of different modulation frequencies. It also makes the system resistant to interfering light sources such as ambient light. Beam pointing is accomplished by feeding back errors in the measured beam position to a beam steering element, such as a steering mirror. Closed-loop tracking performance is superior to existing methods, especially under conditions of atmospheric scintillation.

Steinkraus, Jr., Robert F. (San Francisco, CA); Johnson, Gary W. (Livermore, CA); Ruggiero, Anthony J. (Livermore, CA)

2011-08-09T23:59:59.000Z

33

Photovoltaic lighting system performance  

DOE Green Energy (OSTI)

The performance of 21 PV-powered low pressure sodium lighting systems on a multi-use has been documented in this paper. Specific areas for evaluation include the vandal resistant PV modules, constant voltage and on/off PV charge controllers, flooded deep-cycle lead-antimony and valve regulated lead-acid (VLRA) gel batteries, and low pressure sodium ballasts and lights. The PV lighting system maintenance intervals and lessons learned have been documented over the past 2.5 years. The above performance data has shown that with careful hardware selection, installation, and maintenance intervals the PV lighting systems will operate reliably.

Harrington, S.R.; Hund, T.D.

1996-06-01T23:59:59.000Z

34

Evaluation of Lighting and Lighting Control Technologies  

Science Conference Proceedings (OSTI)

Energy efficient lighting and lighting controls have been a means to significant energy savings for many facilities around the world. Advances in lighting sources often allow for the conservation of quality of light while providing more flexibility in the control of light. Additionally, advances in core technologies within the lighting marketplace regularly lead to the introduction of new lamps, fixtures and controls.  With the rapid introduction of new products and designs, it is important to ...

2013-11-15T23:59:59.000Z

35

Lighting Group: Controls: PIER Lighting Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

PIER Lighting Projects CEC Public Interest Energy Research (PIER) Projects Objective Lighting controls are often expensive, complex, hard to commission properly and difficult to...

36

Pupillary efficient lighting system  

DOE Patents (OSTI)

A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination. 5 figs.

Berman, S.M.; Jewett, D.L.

1989-04-14T23:59:59.000Z

37

Pupillary efficient lighting system  

DOE Patents (OSTI)

A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

Berman, Samuel M. (San Francisco, CA); Jewett, Don L. (Mill Valley, CA)

1991-01-01T23:59:59.000Z

38

LIGHTING RESEARCH PROGRAM Project 3.3 Classroom Photocell and Control System  

E-Print Network (OSTI)

a prototype of an advanced daylighting control system for classrooms. This system integrated dimming control of an advanced daylighting control system for classrooms. This system integrated dimming control with On the concept of an advanced daylighting control system. #12;Deliverable 3.3.15 Final Report TWS

39

Lighting Systems Test Facilities  

NLE Websites -- All DOE Office Websites (Extended Search)

Measurement equipment with light beam Lighting Systems Test Facilities NOTICE Due to the current lapse of federal funding, Berkeley Lab websites are accessible, but may not be...

40

A Touch-Dim Network for the Dimming Control of Lighting System  

Science Conference Proceedings (OSTI)

DALI is a popular interface of lighting network system with an excellent dimming facility, but it is too complicated when it is applied in family house. Touch-Dim installation of DALI ballast is then developed. The installation and operation are much ... Keywords: DALI, lighting, network, Touch-Dim

Jyh-Ching Juang; Hung-Chi Wang; Chun-Lin Lu; Wen-Ming Chen; Ching-Wen Hsu

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Market transformation opportunities for emerging dynamic facade and dimmable lighting control systems  

SciTech Connect

Automated shading and daylighting control systems have been commercially available for decades. The new challenge is to provide a fully functional and integrated fagade and lighting system that operates appropriately for all environmental conditions and meets a range of occupant subjective desires and objective performance requirements. These rigorous performance goals must be achieved with solutions that are cost effective and can operate over long periods with minimal maintenance. It will take time and effort to change the marketplace for these technologies and practices, particularly in building a series of documented success stories, and driving costs and risks to much lower levels at which their use becomes the norm. In recent years, the architectural trend toward highly-transparent all-glass buildings presents a unique challenge and opportunity to advance the market for emerging, smart, dynamic window and dimmable daylighting control technologies. We believe it is possible to accelerate product market transformation by developing projects where technical advances and the interests of motivated manufacturers and innovative owners converge. In this paper we present a case study example that explains a building owner's decision-making process to use dynamic window and dimmable daylighting controls. The case study project undertaken by a major building owner in partnership with a buildings R&D group was designed explicitly to use field test data in conjunction with the market influence of a major landmark building project in New York City to stimulate change in manufacturers' product offerings. Preliminary observations on the performance of these systems are made. A cost model that was developed with the building owner is explained.

Lee, Eleanor S.; Selkowitz, Stephen E.; Hughes, Glenn D.; Thurm, David A.

2004-06-04T23:59:59.000Z

42

Market transformation opportunities for emerging dynamic facade and dimmable lighting control systems  

SciTech Connect

Automated shading and daylighting control systems have been commercially available for decades. The new challenge is to provide a fully functional and integrated fagade and lighting system that operates appropriately for all environmental conditions and meets a range of occupant subjective desires and objective performance requirements. These rigorous performance goals must be achieved with solutions that are cost effective and can operate over long periods with minimal maintenance. It will take time and effort to change the marketplace for these technologies and practices, particularly in building a series of documented success stories, and driving costs and risks to much lower levels at which their use becomes the norm. In recent years, the architectural trend toward highly-transparent all-glass buildings presents a unique challenge and opportunity to advance the market for emerging, smart, dynamic window and dimmable daylighting control technologies. We believe it is possible to accelerate product market transformation by developing projects where technical advances and the interests of motivated manufacturers and innovative owners converge. In this paper we present a case study example that explains a building owner's decision-making process to use dynamic window and dimmable daylighting controls. The case study project undertaken by a major building owner in partnership with a buildings R&D group was designed explicitly to use field test data in conjunction with the market influence of a major landmark building project in New York City to stimulate change in manufacturers' product offerings. Preliminary observations on the performance of these systems are made. A cost model that was developed with the building owner is explained.

Lee, Eleanor S.; Selkowitz, Stephen E.; Hughes, Glenn D.; Thurm, David A.

2004-06-04T23:59:59.000Z

43

Energy-efficient lighting system for television  

DOE Patents (OSTI)

A light control system for a television camera comprises an artificial light control system which is cooperative with an iris control system. This artificial light control system adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to provide a sufficient video signal when the camera iris is substantially open.

Cawthorne, Duane C. (Amarillo, TX)

1987-07-21T23:59:59.000Z

44

Energy saving through effective lighting control  

SciTech Connect

The energy savings associated with various lighting control strategies was investigated at the World Trade Center in New York using a relay-based lighting control system. By reducing after-hours lighting loads to one-third of daytime levels, a 32% energy savings was realized. Combining a very tight lighting schedule with lighting-load shedding in daylit areas reduced energy consumption for lighting 52% relative to baseline operation. The dependency of energy savings on the size of the switching zone was also investigated.

Peterson, D.; Rubinstein, F.

1982-02-01T23:59:59.000Z

45

Light Emitting Diode (LED) Lighting and Systems  

Science Conference Proceedings (OSTI)

This EPRI Technical Update addresses the most promising and unique energy efficient light source light emitting diode (LED) lighting. Business and technical market factors (Chapter 2) explain the upcoming growth of the LED and LED lighting market. Future technical improvements to LEDs and systems are also emphasized. Discussion of the importance of utility involvement in helping their customers make the switch from traditional lighting to LED lighting is provided. LED lighting technologies are covered in...

2007-12-21T23:59:59.000Z

46

Federal Energy Management Program: Lighting Control Types  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting Control Types Characteristics of the most common lighting controls for offices and other public buildings are outlined below. Typical Lighting Control Applications...

47

Solid-State Lighting: Adaptive Street Lighting Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

Adaptive Street Lighting Adaptive Street Lighting Controls to someone by E-mail Share Solid-State Lighting: Adaptive Street Lighting Controls on Facebook Tweet about Solid-State Lighting: Adaptive Street Lighting Controls on Twitter Bookmark Solid-State Lighting: Adaptive Street Lighting Controls on Google Bookmark Solid-State Lighting: Adaptive Street Lighting Controls on Delicious Rank Solid-State Lighting: Adaptive Street Lighting Controls on Digg Find More places to share Solid-State Lighting: Adaptive Street Lighting Controls on AddThis.com... Conferences & Meetings Presentations Publications Webcasts Videos Tools Adaptive Street Lighting Controls This two-part DOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components.

48

Monitored lighting energy savings from dimmable lighting controls in The  

NLE Websites -- All DOE Office Websites (Extended Search)

Monitored lighting energy savings from dimmable lighting controls in The Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building Title Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building Publication Type Journal Article LBNL Report Number LBNL-6171E Year of Publication 2013 Authors Fernandes, Luis L., Eleanor S. Lee, Dennis L. DiBartolomeo, and Andrew McNeil Journal Energy and Buildings Volume 68 Issue A Pagination 498-514 Date Published 01/2014 Keywords Building energy-efficiency, daylighting, lighting control systems Abstract Digital addressable, dimmable lighting controls were introduced to the US market in the early 2000s with the promise of facilitating capture of potential energy savings with greater flexibility over their historic, typically unreliable, analog counterpart. The New York Times Company installed this emerging technology, after having tested the system thoroughly prior to procurement, in their new building in New York, New York. Four years after full occupancy in 2007, the owner agreed to participate in a post-occupancy monitored evaluation of the dimmable lighting system to verify actual performance in the field. Annual lighting energy savings from daylighting, setpoint tuning and occupancy controls were determined for the daylit, open-plan office areas on three typical floors (6, 11, and 20th floors) of the 51-story high-rise tower. Energy savings were calculated from ballast control signal and occupancy data recorded by the manufacturer's lighting control system. The ballast data were calibrated with independent measurements of lighting energy consumption. Savings from dimming controls (daylighting and setpoint tuning) were 12.6 kWh/m2-yr (1.17 kWh/ft2-yr) for the daylit spaces on the three floors overall, or 20%, relative to ASHRAE 90.1-2007. Compared to the prescriptive code in effect at the time of the building's construction (ASHRAE 90.1-2001), savings were 21.0 kWh/m2-yr (1.95 kWh/ft2-yr) or 28%. Annual lighting energy use with all lighting control strategies was 33.9 kWh/m2-yr (3.15 kWh/ft2-yr) in the daylit, open plan zones on average for the three floors. A simple payback analysis was conducted.

49

Lighting Group: Sources and Ballasts: HID Lighting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Ballasts and Controls for HID Lighting Ballasts and Controls for HID Lighting Systems Evaluation of Electronic Ballasts and Related Controls for HID Lighting Systems Objective HID ballast The goal of this project is to evaluate the potential of electronic ballasts and related controls for HID lighting systems to improve the efficiency of current technology. The specific objectives of this project are to: Test, analyze and determine the potential of electronic ballasts for HID lighting systems in cooperation with manufacturers as an emerging energy efficient technology to reduce lighting loads in commercial, industrial and municipal applications. Identify control strategies to further improve the energy efficiency of these systems with a municipal partner. Provide appropriate recommendations for incorporating these technologies into current state codes and regulations.

50

Portable lamp with dynamically controlled lighting distribution  

DOE Patents (OSTI)

A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) arranged vertically with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum insures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. The lighting system may be designed for the home, hospitality, office or other environments.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2001-01-01T23:59:59.000Z

51

Controls for Solid-State Lighting  

SciTech Connect

This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED luminaire components will all be about the same (50,000 hours). The controls and communications techniques used for communicating with conventional light sources, such as dimmable fluorescent lighting, are appropriate for LED illumination for energy management purposes. DALI has been used to control LED systems in new applications and the emerging ZigBee protocol could be used for LEDs as well. Major lighting companies are already moving in this direction. The most significant finding is that there is a significant opportunity to use LEDs today for standby lighting purposes. Conventional lighting systems can be made more efficient still by using LEDs to provide a low-energy standby state when lower light levels are acceptable.

Rubinstein, Francis

2007-06-22T23:59:59.000Z

52

Controls for Solid-State Lighting  

SciTech Connect

This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED luminaire components will all be about the same (50,000 hours). The controls and communications techniques used for communicating with conventional light sources, such as dimmable fluorescent lighting, are appropriate for LED illumination for energy management purposes. DALI has been used to control LED systems in new applications and the emerging ZigBee protocol could be used for LEDs as well. Major lighting companies are already moving in this direction. The most significant finding is that there is a significant opportunity to use LEDs today for standby lighting purposes. Conventional lighting systems can be made more efficient still by using LEDs to provide a low-energy standby state when lower light levels are acceptable.

Rubinstein, Francis

2007-06-22T23:59:59.000Z

53

Information Resources: Adaptive Street Lighting Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

Adaptive Street Lighting Controls Adaptive Street Lighting Controls This two-part DOE Municipal Solid-State Street Lighting Consortium webinar focused on LED street lighting equipped with adaptive control components. In Part I, presenters Amy Olay of the City of San Jose, CA, and Kelly Cunningham of the California Lighting Technology Center at UC Davis discussed their experiences as early adopters of these smart street lighting systems. In Part II, presenters Laura Stuchinsky of the City of San Jose, CA, and Michael Poplawski of Pacific Northwest National Laboratory explored the MSSLC's recently released Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires. Part I: Experiences and Benefits June 11, 2013 View the presentation slides Part II: Reviewing the MSSLC's Model Specification

54

Lighting Controls : Daylighting The New York Times Building  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting Controls Lighting Controls Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Lighting Controls The lighting controls scope of work is based upon the philosophy that occupants of commercial office buildings prefer natural light to electric light. The lighting controls system specified by the Times Company for its new headquarters building is a DALI (Digital Addressable Lighting Interface) based system with dimmable fixtures throughout the interior space. This allows the system to dim down the electric lighting in response to daylight admittance. It also provides for variable target set points for illuminance levels at the work plane. The Times Company intends to establish and adjust target set points on a departmental basis. The lighting control sequences are described within the specification 16575. These sequences utilize occupancy sensors, photo sensors, switches and a time clock to control the lighting in the interior space on each floor. The emergency lighting system is also described within the specification. The lighting control sequences are tied to Control Intent Diagrams that divide up the space on each floor into its various control zones. The overall intent is to provide electric light only when the space is occupied and to provide as little electric light as is necessary to achieve the target set point for the work plane in a given department. A department usually occupies multiple floors.

55

Lighting Controls | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Use dimmers to save energy and add ambience to a room Check the packages of CFL and LED lightbulbs to see if they are compatible with dimmers Use lighting controls to...

56

Desulfurization Effects on a Light-Duty Diesel Vehicle NOx Adsorber Exhaust Emission Control System  

DOE Green Energy (OSTI)

Analyzes the effects on gaseous emissions, before and after desulfurization, on a light-duty diesel vehicle with a NOx adsorber catalyst.

Tatur, M.; Tomazic, D.; Tyrer, H.; Thornton, M.; Kubsh, J.

2006-05-01T23:59:59.000Z

57

Lighting Controls in Commercial Buildings  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting Controls in Commercial Buildings Lighting Controls in Commercial Buildings Title Lighting Controls in Commercial Buildings Publication Type Report Year of Publication 2012 Authors Williams, Alison A., Barbara A. Atkinson, Karina Garbesi, Erik Page, and Francis M. Rubinstein Series Title The Journal of the Illuminating Engineering Society of North America Volume 8 Document Number 3 Pagination 161-180 Date Published January ISBN Number 1550-2716 Keywords controls, daylighting, energy, occupancy sensors, tuning. Abstract Researchers have been quantifying energy savings from lighting controls in commercial buildings for more than 30 years. This study provides a meta-analysis of lighting energy savings identified in the literature-240 savings estimates from 88 papers and case studies, categorized into daylighting strategies, occupancy strategies, personal tuning, and institutional tuning. Beginning with an overall average of savings estimates by control strategy, successive analytical filters are added to identify potential biases introduced to the estimates by different analytical approaches. Based on this meta-analysis, the bestestimates of average lighting energy savings potential are 24 percent for occupancy, 28 percent for daylighting, 31 percent for personal tuning, 36 percent for institutional tuning, and 38 percent for multiple approaches. The results also suggest that simulations significantly overestimate (by at least 10 percent) the average savings obtainable from daylighting in actual buildings.

58

Technology reviews: Lighting systems  

SciTech Connect

We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize lighting system in the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

1992-09-01T23:59:59.000Z

59

Quantifying National Energy Savings Potential of Lighting Controls in Commercial Buildings  

E-Print Network (OSTI)

Performance of Occupancy-Based Lighting Control Systems: AReview. ” Lighting Residential Technology 42:415-431. Itron,Information Template – Indoor Lighting Controls. Pacific Gas

Williams, Alison

2013-01-01T23:59:59.000Z

60

Market transformation opportunities for emerging dynamic facade and dimmable lighting control systems  

E-Print Network (OSTI)

cost estimate for the daylighting system and the resultantwindow and daylighting systems are being developed and areautomated shading and daylighting systems are discussed in

Lee, Eleanor S.; Selkowitz, Stephen E.; Hughes, Glenn D.; Thurm, David A.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Federal Energy Management Program: Lighting Control Types  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting Control Lighting Control Types to someone by E-mail Share Federal Energy Management Program: Lighting Control Types on Facebook Tweet about Federal Energy Management Program: Lighting Control Types on Twitter Bookmark Federal Energy Management Program: Lighting Control Types on Google Bookmark Federal Energy Management Program: Lighting Control Types on Delicious Rank Federal Energy Management Program: Lighting Control Types on Digg Find More places to share Federal Energy Management Program: Lighting Control Types on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories Product Designation Process Low Standby Power Energy & Cost Savings Calculators Model Acquisitions Language Working Group Resources Technology Deployment Renewable Energy

62

Lumental : web-based tunable lighting control  

E-Print Network (OSTI)

Dynamically adjusting the light spectrum of spectrum-tunable light fixtures promises significant energy savings over binary or incremental dimming control. To enable this level of controllability, lighting must evolve from ...

Hall, Harrison King

2012-01-01T23:59:59.000Z

63

Energy-saving lighting systems. [Includes glossary  

SciTech Connect

Artificial lighting accounts for 20% of electrical energy, 7.6% of total energy, and 3.8% of total fuel in the US. Because conserving lighting energy can reduce operating costs as well as save energy, this book explores several practical ways to do that. The book first describes the complete range of light sources and their accessories, then goes on to cover photometric reports, techniques of lighting design, fluorescent luminaires, industrial lighting systems, manual and automatic lighting controls, the impact of air-conditioning on lighting systems, and exterior lighting. A glossary of lighting terminology, conversion tables, and recommended illumination levels appear in the appendix. The book is designed for students and practicity lighting engineers and designers. 56 references, 169 figures, 45 tables. (DCK)

Sorcar, P.C.

1982-01-01T23:59:59.000Z

64

Lighting Controls/Sensors | Open Energy Information  

Open Energy Info (EERE)

Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon Lighting ControlsSensors Jump to: navigation, search TODO: Add description List of Lighting...

65

Lighting.  

SciTech Connect

Since lighting accounts for about one-third of the energy used in commercial buildings, there is opportunity to conserve. There are two ways to reduce lighting energy use: modify lighting systems so that they used less electricity and/or reduce the number of hours the lights are used. This booklet presents a number of ways to do both. Topics covered include: reassessing lighting levels, reducing lighting levels, increasing bulb & fixture efficiency, using controls to regulate lighting, and taking advantage of daylight.

United States. Bonneville Power Administration.

1992-09-01T23:59:59.000Z

66

Hybrid solar lighting distribution systems and components  

Science Conference Proceedings (OSTI)

A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

2011-07-05T23:59:59.000Z

67

Hybrid solar lighting systems and components  

DOE Patents (OSTI)

A hybrid solar lighting system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates each component.

Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

2007-06-12T23:59:59.000Z

68

Intelligent lighting control principles. Report for oct 78-apr 79  

SciTech Connect

It is generally recognized that compared to illumination from ceiling-mounted electric lighting, an equal amount of daylight illumination from windows can be about three times more effective in producing visibility. If this is true, then visibility-based lighting controls will result in greater energy conservation than will illumination-based lighting controls. A mathematical technique has been developed suitable for an intelligent microprocessor-based equi-visibility lighting control system. In an example room, a computer simulation compares the energy consumption for on-off, high-low-off, equi-illumination, and equi-visibility lighting controls systems.

Pierpoint, W.

1979-07-01T23:59:59.000Z

69

Lighting Control Types | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lighting Control Types Lighting Control Types Lighting Control Types October 7, 2013 - 11:27am Addthis Characteristics of the most common lighting controls for offices and other public buildings are outlined below. Also provided is a portable document format version of How to Select Lighting Controls for Offices and Public Buildings. Typical Lighting Control Applications Type of Control Private Office Open Office - Daylit Open Office - Interior Occupancy Sensors ++ ++ ++ Time Scheduling + ++ ++ Daylight Dimming ++ ++ 0 Bi-Level Switching ++ + + Demand Lighting + ++ ++ ++ = good savings potential + = some savings potential 0 = not applicable Back to Top Occupancy Sensors Occupancy sensors are the most common lighting control used in buildings today. Two technologies dominate: infrared and ultrasonic. Infrared sensors

70

Harmonization of Wireless Dimming Lighting Control | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Harmonization of Wireless Dimming Lighting Harmonization of Wireless Dimming Lighting Control Harmonization of Wireless Dimming Lighting Control The U.S. Department of Energy (DOE) is currently conducting research into the harmonization of ZigBee, BACnet-or building automation and control network-and DALI-or digital addressable lighting interface-systems in wireless dimming lighting controls. Four proposed modules will enable "plug-and-play" capabilities for all DALI-compatible controls and BACnet-compatible systems. Project Description This project seeks to develop "plug-and-play" capabilities for lighting as an integrated component of a whole-building control system. Verified Energy, LLC, attempts to demonstrate the benefits of implementing wireless control in dimming applications using plug-and-play principles.

71

Energy-efficient lighting system for television  

DOE Patents (OSTI)

A light control system for a television camera which adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to keep the camera iris substantially open is described.

Cawthorne, D.C.

1986-01-29T23:59:59.000Z

72

BIM-Based Digital Lighting Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

industry has been slow to embrace new technologies and concepts, and electrical installers are largely unfamiliar with digital control technologies. For a lighting controls...

73

Lighting system with thermal management system  

DOE Patents (OSTI)

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

2013-05-07T23:59:59.000Z

74

Lighting Controls | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

fluorescent lighting fixtures rather than replace them. Dimmers and LEDs Some light-emitting diode (LED) lightbulbs can be used with dimmers. LED bulbs and fixtures must be...

75

Report from the Light Water Reactor Sustainability Workshop on Advanced Instrumentation, Information, and Control Systems and Human-System Interface Technologies  

SciTech Connect

The Light Water Reactor Sustainability (LWRS) Program is a research and development (R&D) program sponsored by the U.S. Department of Energy (DOE). The program is operated in close collaboration with industry R&D programs to provide the technical foundations for licensing and managing the long-term, safe, and economical operation of Nuclear Power Plants that are currently in operation. The LWRS Program focus is on longer-term and higher-risk/reward research that contributes to the national policy objectives of energy and environmental security. Advanced instruments and control (I&C) technologies are needed to support the safe and reliable production of power from nuclear energy systems during sustained periods of operation up to and beyond their expected licensed lifetime. This requires that new capabilities to achieve process control be developed and eventually implemented in existing nuclear assets. It also requires that approaches be developed and proven to achieve sustainability of I&C systems throughout the period of extended operation. The strategic objective of the LWRS Program Advanced Instrumentation, Information, and Control Systems Technology R&D pathway is to establish a technical basis for new technologies needed to achieve safety and reliability of operating nuclear assets and to implement new technologies in nuclear energy systems. This will be achieved by carrying out a program of R&D to develop scientific knowledge in the areas of: • Sensors, diagnostics, and prognostics to support characterization and prediction of the effects of aging and degradation phenomena effects on critical systems, structures, and components (SSCs) • Online monitoring of SSCs and active components, generation of information, and methods to analyze and employ online monitoring information • New methods for visualization, integration, and information use to enhance state awareness and leverage expertise to achieve safer, more readily available electricity generation. As an initial step in accomplishing this effort, the Light Water Reactor Sustainability Workshop on Advanced Instrumentation, Information, and Control Systems and Human-System Interface Technologies was held March 20–21, 2009, in Columbus, Ohio, to enable industry stakeholders and researchers in identification of the nuclear industry’s needs in the areas of future I&C technologies and corresponding technology gaps and research capabilities. Approaches for collaboration to bridge or fill the technology gaps were presented and R&D activities and priorities recommended. This report documents the presentations and discussions of the workshop and is intended to serve as a basis for the plan under development to achieve the goals of the I&C research pathway.

Bruce P. Hallbert; J. J. Persensky; Carol Smidts; Tunc Aldemir; Joseph Naser

2009-08-01T23:59:59.000Z

76

On the calibration and commissioning of lighting controls  

SciTech Connect

Lighting controls have the potential to capture significant energy savings in commercial buildings if properly specified, installed, commissioned and maintained. Proper commissioning is often absent in lighting projects and the lack of commissioning can significantly reduce a project`s energy savings potential. The paper focuses on the importance of good commissioning practice for obtaining satisfactory performance from lighting control systems and discusses the difficulties of commissioning today`s systems. Some practical suggestions for commissioning lighting controls is offered as well as advice to specifiers and early adopters to aid them in selecting controls that are most appropriate to their requirements.

Rubinstein, F.; Avery, D.; Jennings, J. [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technologies Div.; Blanc, S. [Pacific Gas and Electric Co., San Ramon, CA (United States). Customer Energy Management Dept.

1997-10-01T23:59:59.000Z

77

Integrated Envelope and Lighting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency Program and Market Trends High Technology and Industrial Buildings Lighting Systems Residential Buildings Simulation Tools Sustainable Federal Operations Windows...

78

EMC characteristics of lighting systems.  

E-Print Network (OSTI)

??[Truncated abstract] This thesis examines Electromagnetic Compatibility (EMC) characteristics of lighting systems. The issues examined have become more significant with the rapid development of both… (more)

Zegarac, Zoran

2013-01-01T23:59:59.000Z

79

LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL  

SciTech Connect

This study describes the impact of lighting management systems that dynamically control lights in accordance with the needs of occupants. Various control strategies are described: scheduling, tuning, lumen depreciation, and daylighting. From initial experimental results, the energy savings provided by each of the above strategies are estimated to be 26, 12, 14, and 15%, respectively. Based upon a cost of $0.05-0.10 per kWh for electric energy and a 2-, 3-, or 4-yr payback, target costs for a simple and a sophisticated lighting management system are found to be $0.24 and 1.89 per ft{sup 2}, respectively, for a cost-effective investment. A growth model, based upon an extrapolation of the increase in building stock since 1975, indicates that the commercial and industrial (C and I) building stock will grow from 40 x 10{sup 9} ft{sup 2} in 1980 to about 67 x 10{sup 9} ft{sup 2} by the year 2000. Even with the use of more efficient lighting components, the energy required for this additional C and I stock will be 307 x 10{sup 9} kWh, an increase of only 13 x 10{sup 9} kWh above current use. The specified information is used to analyze the economic impacts that using these systems will have on the lighting industry, end users, utility companies, and the nation's economy. A $1 - 4 x 10{sup 9} annual lighting control industry can be generated, creating many jobs. The estimated return on investment (ROI) for controls for end users would be between 19 and 38%. Utilities will be able to make smaller additions to capacity and invest less capital at 7-10% ROI. Finally, the annual energy savings, up to $3.4 x 10{sup 9} for end users and about $5 x 10{sup 9} for utilities, representing unneeded generating capacity, will be available to capitalize other areas of the economy.

Verderber, R.R.; Rubinstein, F.

1982-09-01T23:59:59.000Z

80

CONTROL SYSTEM  

DOE Patents (OSTI)

A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

Shannon, R.H.; Williamson, H.E.

1962-10-30T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

The California Advanced Lighting Controls Training Program (CALCTP)  

NLE Websites -- All DOE Office Websites (Extended Search)

The California Advanced Lighting Controls Training Program (CALCTP) The California Advanced Lighting Controls Training Program (CALCTP) Speaker(s): Bernie Kotlier Date: March 2, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Sila Kiliccote CALCTP is a broad based partnership that is dedicated to advancing the California State policy of energy conservation as the first priority for serving the state's future energy needs. CALCTP is supported, operated and directed by representatives of the California Lighting Technology Center, the California Energy Commission, the California Community College system, investor owned utilities, municipal utilities, electrical contractors, electrical workers, and manufacturers of advanced, high efficiency lighting and lighting control systems. The mission of the California Advanced Lighting Controls Training Program (CALCTP) is to make

82

Automatic lighting controls demonstration: Long-term results  

SciTech Connect

An advanced electronically ballasted lighting control system was installed in a portion of an office building to measure the energy and demand savings. The lighting control system used an integrated lighting control scenario that included daylight following, lumen depreciation correction, and scheduling. The system reduced lighting energy on weekdays by 62% and 51% in the north and south daylit zones, respectively, compared to a reference zone that did not have controls. During the summer, over 75% energy savings were achieved on weekdays in the north daylit zone. Even in the south interior zone, which benefitted lime from daylight, correction strategies and adjustment of the aisleway lights to a low level resulted in energy use of only half that of the reference zone. Although, in general, the savings varied over the year due to changing daylight conditions, the energy reduction achieved with controls could be fit using a simple analytical model. Significant savings also occurred during core operating hours when it is more expensive to supply and use energy. Compared to the usage in the reference zone, energy reductions of 49%, 44%, and 62% were measured in the south daylight, south interior, and north daylight zones, respectively, during core operating hours throughout the year. Lighting energy usage on weekends decreased dramatically in the zones with controls, with the usage in the north daylit zone only 10% that of the reference zone. A simple survey developed to assess occupant response to the lighting control system showed that the occupants were satisfied with the light levels provided.

Rubinstein, F. (Lawrence Berkeley Lab., CA (United States))

1991-10-18T23:59:59.000Z

83

Advanced Lighting Systems | Open Energy Information  

Open Energy Info (EERE)

Centre, Minnesota Zip 56378 Product Advanced Lighting Systems (ALS) provides a number of LED and fiber optic lighting solutions. It was acquired by Nexxus Lighting in September...

84

Standardization of user interfaces for lighting controls  

Science Conference Proceedings (OSTI)

Standardization of human-machine interfaces has proved beneficial in a number of technology areas. Lighting control is a home and office technology that is of central importance in energy efficiency and could potentially benefit from standardization, ... Keywords: CIE, Concepts, HVAC, IEANA, IEC, ISO, Indicators, LED, Lighting controls, NEMA, SAE, Standards, Symbols, User interfaces

Bruce Nordman; Jessica Granderson; Kelly Cunningham

2012-02-01T23:59:59.000Z

85

Adapting Wireless Technology to Lighting Control and Environmental Sensing  

SciTech Connect

The high cost of retrofitting buildings with advanced lighting control systems is a barrier to adoption of this energy-saving technology. Wireless technology, however, offers a solution to mounting installation costs since it requires no additional wiring to implement. To demonstrate the feasibility of such a system, a prototype wirelessly-controlled advanced lighting system was designed and built. The system includes the following components: a wirelessly-controllable analog circuit module (ACM), a wirelessly-controllable electronic dimmable ballast, a T8 3-lamp fixture, an environmental multi-sensor, a current transducer, and control software. The ACM, dimmable ballast, multi-sensor, and current transducer were all integrated with SmartMesh{trademark} wireless mesh networking nodes, called motes, enabling wireless communication, sensor monitoring, and actuator control. Each mote-enabled device has a reliable communication path to the SmartMesh Manager, a single board computer that controls network functions and connects the wireless network to a PC running lighting control software. The ACM is capable of locally driving one or more standard 0-10 Volt electronic dimmable ballasts through relay control and a 0-10 Volt controllable output. The mote-integrated electronic dimmable ballast is designed to drive a standard 3-lamp T8 light fixture. The environmental multi-sensor measures occupancy, light level and temperature. The current transducer is used to measure the power consumed by the fixture. Control software was developed to implement advanced lighting algorithms, including daylight ramping, occupancy control, and demand response. Engineering prototypes of each component were fabricated and tested in a bench-scale system. Based on standard industry practices, a cost analysis was conducted. It is estimated that the installation cost of a wireless advanced lighting control system for a retrofit application is at least 30% lower than a comparable wired system for a typical 16,000 square-foot office building, with a payback period of less than 3 years.

Dana Teasdale; Francis Rubinstein; Dave Watson; Steve Purdy

2005-10-01T23:59:59.000Z

86

Controls for Solid-State Lighting  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency Program and Market Trends High Technology and Industrial Buildings Lighting Systems Residential Buildings Simulation Tools Sustainable Federal Operations Windows...

87

Power reduction control for inductive lighting installation  

SciTech Connect

A control system for continuously, selectively reducing power consumption in an inductive lighting installation energized from an A.C. power source, the installation including at least one gas discharge lamp such as a fluorescent lamp energized through any of a plurality of different types of electromagnetic ballast having different harmonic distortion characteristics, the control system is described comprising: load energizing circuit means, including a signal-actuated normally-closed primary switch, for connecting an A.C. power source to the lighting installation; a signal-actuated, normally-open secondary switch connected in parallel with the lighting installation; actuation means for generating actuation signals and applying such actuation signals to the primary and secondary switches to actuate the primary switch open and to actuate the secondary switch closed in approximate time coincidence in each half-cycle of the A.C. power; zero-crossing detector means for generating zero-crossing signals at times TX indicative of zero-voltage transitions in the A.C. power; and program means, connected to the zero-crossing detector means and to the actuation means, programming the actuation means to generate (a) power reduction actuation signals at times T1 and T2 in each half-cycle of the A.C. power, (b) a first filter actuation signal at a time T3 prior to each zero-crossing time TX, and (c) a second filter actuation signal at a time T4 following each zero-crossing time TX; the program means including a plurality of programs each establishing a set of times T1, T2, T3 and T4 for several different power reduction levels for a particular type of ballast; and selection means for selecting a program to match the ballast type of the load.

Falk, K.R.

1993-06-22T23:59:59.000Z

88

Energy conserving automatic light output system  

SciTech Connect

An energy conserving lighting system is provided wherein a plurality of fluorescent lamps are powered by a poorly regulated voltage source power supply which provides a decreasing supply voltage with increasing arc current so as to generally match the volt-ampere characteristics of the lamps. A transistor ballast and control circuit connected in the arc current path controls the arc current, and hence the light output, in accordance with the total ambient light, i.e., the light produced by the lamps together with whatever further light is produced by other sources such as daylight. In another embodiment, a transistor ballast is utilized in combination with an inductive ballast. The transistor ballast provides current control over a wide dynamic range up to a design current maximum at which maximum the transistor is saturated and the inductive ballast takes over the current limiting function. An operational amplifier is preferably connected in the base biassing circuit of the control transistor of the transistor ballast. In an embodiment wherein two sets of lamps with separate inductive ballasts are provided, the arc currents for the two ballasts are scaled or matched to provide the desired light output.

Widmayer, D.F.

1983-07-19T23:59:59.000Z

89

Energy Conservation Utilizing Wireless Dimmable Lighting Control  

E-Print Network (OSTI)

Energy Conservation Utilizing Wireless Dimmable Lighting Control in a Shared-Space Office Yao preference and requirements vary · among individuals · with tasks · with time and age Lighting satisfaction occupants sharing an office? · Ethernet infrastructure How will the energy savings and user satisfaction

Agogino, Alice M.

90

Controlling statistical properties of stored light  

E-Print Network (OSTI)

Statistical properties of outgoing light pulses are studies after they have been stored in a medium of atoms in the tripod configuration. A generalized Hong-Ou-Mandel interference, storing of squeezed states and homodyne signal analysis are discussed in the context of their dependence on the parameters of the control fields used for light storage and release.

A. Raczynski; K. Slowik; J. Zaremba; S. Zielinska-Kaniasty

2007-04-23T23:59:59.000Z

91

Intelligent light control using sensor networks  

Science Conference Proceedings (OSTI)

Increasing user comfort and reducing operation costs have always been two primary objectives of building operations and control strategies. Current building control strategies are unable to incorporate occupant level comfort and meet the operation goals ... Keywords: active sensing, intelligent buildings, light control, sensor networks

Vipul Singhvi; Andreas Krause; Carlos Guestrin; James H. Garrett, Jr.; H. Scott Matthews

2005-11-01T23:59:59.000Z

92

A Light-Weight Instrumentation System Design  

Science Conference Proceedings (OSTI)

To meet challenging constraints on telemetry system weight and volume, a custom Light-Weight Instrumentation System was developed to collect vehicle environment and dynamics on a short-duration exo-atmospheric flight test vehicle. The total telemetry system, including electronics, sensors, batteries, and a 1 watt transmitter weighs about 1 kg. Over 80 channels of measurement, housekeeping, and telemetry system diagnostic data are transmitted at 128 kbps. The microcontroller-based design uses the automotive industry standard Controller Area Network to interface with and support in-flight control fimctions. Operational parameters are downloaded via a standard asynchronous serial communications intefiace. The basic design philosophy and functionality is described here.

Kidner, Ronald

1999-06-02T23:59:59.000Z

93

LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL  

E-Print Network (OSTI)

of a simple energy management system (scheduling strategy)that all new energy management systems will employ all fourpresented on energy management systems, control strategies,

Verderber, R.R.

2010-01-01T23:59:59.000Z

94

List of Lighting Controls/Sensors Incentives | Open Energy Information  

Open Energy Info (EERE)

Sensors Incentives Sensors Incentives Jump to: navigation, search The following contains the list of 493 Lighting Controls/Sensors Incentives. CSV (rows 1 - 493) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central, North and SWEPCO) - Commercial Solutions Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Nonprofit

95

New lighting and controls to save 67% at mall  

SciTech Connect

A metal halide lighting system and a Staco control system that dims lighting in response to sunlight should save a Dallas hotel and office mall 67% in electricity costs. The new system replaces quartz lamps in the 160-foot-high atrium. The savings are a combination of state tax credits and lower air conditioning costs, which will pay for the $25,000 project in about 18 months. The metal halide system was chosen over sodium lighting in order to have more attractive color rendition and because it provides about twice as many lumens per watt as the quartz lamps. The Staco system will dim lamps in response to outdoor light and turn lights above a skating rink on and off at prescribed times.

Kennedy, K.

1985-06-17T23:59:59.000Z

96

Adapting Wireless Technology to Lighting Control and Environmental Sensing  

SciTech Connect

Although advanced lighting control systems offer significant energy savings, the high cost of retrofitting buildings with advanced lighting control systems is a barrier to adoption of this energy-saving technology. Wireless technology, however, offers a solution to mounting installation costs since it requires no additional wiring to implement. To demonstrate the feasibility of such a system, a prototype wirelessly-controlled advanced lighting system was designed and built. The system includes the following components: a wirelessly-controllable analog circuit module (ACM), a wirelessly-controllable electronic dimmable ballast, a T8 3-lamp fixture, an environmental multi-sensor, a current transducer, and control software. The ACM, dimmable ballast, multi-sensor, and current transducer were all integrated with SmartMesh{trademark} wireless mesh networking nodes, called motes, enabling wireless communication, sensor monitoring, and actuator control. Each mote-enabled device has a reliable communication path to the SmartMesh Manager, a single board computer that controls network functions and connects the wireless network to a PC running lighting control software. The ACM is capable of locally driving one or more standard 0-10 Volt electronic dimmable ballasts through relay control and a 0-10 Volt controllable output, in addition to 0-24 Volt and 0-10 Volt inputs. The mote-integrated electronic dimmable ballast is designed to drive a standard 3-lamp T8 light fixture. The environmental multisensor measures occupancy, light level and temperature. The current transducer is used to measure the power consumed by the fixture. Control software was developed to implement advanced lighting algorithms, including open and closed-loop daylight ramping, occupancy control, and demand response. Engineering prototypes of each component were fabricated and tested in a bench-scale system. Based on standard industry practices, a cost analysis was conducted. It is estimated that the installation cost of a wireless advanced lighting control system for a retrofit application is at least 20% lower than a comparable wired system for a typical 16,000 square-foot office building, with a payback period of less than 3 years. At 30% market penetration saturation, a cumulative 695 Billion kWh of energy could be saved through 2025, a cost savings of $52 Billion.

Dana Teasdale; Francis Rubinstein; David S. Watson; Steve Purdy

2006-04-30T23:59:59.000Z

97

Sensor Control Unit Light Submitted by:  

E-Print Network (OSTI)

With the growing need to conserve energy, more people are becoming conscious of energy consumption and are looking for ways to reduce costly waste associated with electricity. Though most consumers do not think about lighting until the light bulb fails or the power goes out, expenses incurred due to lighting have been found to be a large part of overall energy consumption and lighting has now become the focus of efforts aimed at reducing the high cost of electricity. The purpose of our project is to design an Automatic Light Control Device (ALCD) to help curb the high cost of internal lighting while creating a convenient effortlessly lighted environment for the consumer. Today, energy saving devices, such as occupancy or motion sensors, is used by a multiple of people for the conservation of power. Motion detectors cause lights to turn on after entering the room and off after no movement is detected for a certain amount of time. This unit is efficient; however, energy is loss due to the presence and absence of movement in a particular room by the sensor continuously activating on or off. Unneeded cycling uses more power and defeats the intended purpose of saving energy. The ALCD will save energy by eliminating false conditions, thereby minimizing light

Professor Joseph Picone; Ece Senior Design I; John Thompson; Marshalia Green; Brad Lowe; Lutrisha Johnson; Automatic Light Control Device

2001-01-01T23:59:59.000Z

98

Neural daylight control system  

E-Print Network (OSTI)

The paper describes the design, the implementation of a neural controller used in an automatic daylight control system. The automatic lighting control system (ALCS) attempt to maintain constant the illuminance at the desired level on working plane even if the daylight contribution is variable. Therefore, the daylight will represent the perturbation signal for the ALCS. The mathematical model of process is unknown. The applied structure of control need the inverse model of process. For this purpose it was used other artificial neural network (ANN) which identify the inverse model of process in an on-line manner. In fact, this ANN identify the inverse model of process + the perturbation signal. In this way the learning signal for neural controller has a better accuracy for the present application.

Grif, Horatiu Stefan

2010-01-01T23:59:59.000Z

99

The HOL Light System REFERENCE  

E-Print Network (OSTI)

This volume is the reference manual for the HOL Light system. In contrast to the Tutorial, it is mainly intended for reference purposes, though some readers will find it productive to browse through it as part of the learning process. The main entries for the reference manual are generated from the same database that is used by the online HOL Light help system. The entries that follow provide documentation on essentially all the pre-defined ML variable bindings in the HOL Light system. These include: general-purpose functions, such as ML functions for list processing, arithmetic, input/output, and interface configuration; functions for processing the types and terms of the HOL logic and for using the subgoal package; primitive and derived forward inference rules; tactics and tacticals; and pre-proved built-in theorems. The manual entries for these ML identifiers are divided into two chapters. The first chapter is an alphabetical sequence of manual entries for all ML identifiers in the system except those identifiers that are bound to theorems (or pairs of theorems, etc.) The theorems are listed in the second chapter, roughly grouped into sections based on subject matter. Our documentation does not cover basic functions in the OCaml toplevel, such as addition, string concatenation etc. In fact, relatively few native OCaml functions are used, and those are all documented in the Objective CAML Reference Manual:

Tom Melham; Larry Paulson The Typeset

2013-01-01T23:59:59.000Z

100

LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL  

E-Print Network (OSTI)

Depreciation, and Daylighting This control system is moresystem can provide (scheduling, lumen depre- ciation, tuning, daylighting), andSystem Performance Scheduling Lumen Maintenance Tuning Daylighting

Verderber, R.R.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Using Light to Control How X Rays Interact with Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Using Light to Control How X Rays Interact with Matter Using Light to Control How X Rays Interact with Matter Print Wednesday, 27 January 2010 00:00 Schemes that use one light...

102

Quantifying National Energy Savings Potential of Lighting Controls in  

NLE Websites -- All DOE Office Websites (Extended Search)

National Energy Savings Potential of Lighting Controls in National Energy Savings Potential of Lighting Controls in Commercial Buildings Title Quantifying National Energy Savings Potential of Lighting Controls in Commercial Buildings Publication Type Report Year of Publication 2012 Authors Williams, Alison A., Barbara A. Atkinson, Karina Garbesi, and Francis M. Rubinstein Pagination 14 Date Published May Publisher LBNL-5895E Abstract Lighting has the largest estimated technical potential for energy savings of any U.S. building end-use. A significant fraction of that potential is believed to lie in lighting system controls. While controls are incorporated in national model building codes, their adoption and enforcement are spotty, and controls have been largely ignored in energy efficiency standards, leaving much potential untapped. The development of sound energy policy with respect to lighting controls depends on improved quantification of potential savings. Researchers have been quantifying energy savings from lighting controls in commercial buildings for more than 30 years, but results vary widely. This meta-analysis of energy savings potential used 240 savings estimates from 88 published sources, categorized into daylighting strategies, occupancy-based strategies, personal tuning, and institutional tuning. Beginning with an average of savings estimates based on the entire literature, this research added successive analytical filters to identify potential biases introduced to the estimates by different analytical approaches. We obtained relatively robust final estimates of average savings: 24% for occupancy, 28% for daylighting, 31% for personal tuning, 36% for institutional tuning, and 38% for combined approaches. Using these data and estimates of current and full penetration of controls, we calculated national energy savings potential on the order of 19%.

103

Intelligent Light Control using Sensor Networks  

E-Print Network (OSTI)

Increasing user comfort and reducing operation costs have always been two primary objectives of building operations and control strategies. Current building control strategies are unable to incorporate occupant level comfort and meet the operation goals simultaneously. In this paper, we present a novel utility-based building control strategy that optimizes the tradeo# between meeting user comfort and reduction in operation cost by reducing energy usage. We present an implementation of the proposed approach as an intelligent lighting control strategy that significantly reduces energy cost. Our approach is based on a principled, decision theoretic formulation of the control task. We demonstrate the use of mobile wireless sensor networks to optimize the tradeo # between fulfilling di#erent occupants' light preferences and minimizing energy consumption. We further extend our approach to optimally exploit external light sources for additional energy savings, a process called daylight harvesting. Also we demonstrate that an active sensing approach can maximize the mobile sensor network's lifetime by sensing only during most informative situations. We provide e#cient algorithms for solving the underlying complex optimization problems, and extensively evaluate our proposed approach in a proof-of-concept testbed using MICA2 motes and dimmable lamps. Our results indicate a significant improvement in user utility and reduced energy expenditure.

Vipul Singhvi Civil; Vipul Singhvi; Civil Engineering Dept; James H. Garrett

2005-01-01T23:59:59.000Z

104

Lighting Control Design | Open Energy Information  

Open Energy Info (EERE)

Design Design Jump to: navigation, search Name Lighting Control & Design Place Glendale, California Zip CA 91201 Product California-based manufacturer of digital lighting controls and software. Coordinates 43.125946°, -87.928409° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.125946,"lon":-87.928409,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

105

Lighting system with heat distribution face plate  

DOE Patents (OSTI)

Lighting systems having a light source and a thermal management system are provided. The thermal management system includes synthetic jet devices, a heat sink and a heat distribution face plate. The synthetic jet devices are arranged in parallel to one and other and are configured to actively cool the lighting system. The heat distribution face plate is configured to radially transfer heat from the light source into the ambient air.

Arik, Mehmet; Weaver, Stanton Earl; Stecher, Thomas Elliot; Kuenzler, Glenn Howard; Wolfe, Jr., Charles Franklin; Li, Ri

2013-09-10T23:59:59.000Z

106

Light Control of Cholesteric Liquid Crystals Using Azoxy-Based Host Materials  

E-Print Network (OSTI)

% ZhK-440 and 25% ZLI-2011. Light Control of Cholesteric Liquid Crystals 129 #12;cholesteric systemsLight Control of Cholesteric Liquid Crystals Using Azoxy-Based Host Materials G. Chilaya A, Swarthmore, PA, USA The characteristics of cholesteric liquid crystals can be controlled by light irradiation

Collings, Peter

107

Lighting Control Testbeds at the General Services Administration...  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting Control Testbeds at the General Services Administration: Showing Promise for Lighting Energy Reductions NOTICE Due to the current lapse of federal funding, Berkeley Lab...

108

Controls for Solid-State Lighting  

E-Print Network (OSTI)

provide a low-energy “standby” light level while another,through high CRI LEDs for standby lighting in many interioruse LEDs today for standby lighting purposes. Conventional

Rubinstein, Francis

2007-01-01T23:59:59.000Z

109

Radioluminescent (RL) airfield lighting system program  

Science Conference Proceedings (OSTI)

In 1980, the US Air Force Engineering and Services Center (AFESC) at Tyndall Air Force Base, Florida, requested that the Radioisotope Technology Group of Oak Ridge National Laboratory (ORNL) develop large-scale, tritium-powered, radioluminescent (RL) airfield lighting systems. The RL lighting systems possess the advantages of being portable, requiring no electrical power source, having a long shelf life, and being unaffected by environmental extremes. These characteristics make the RL system well-suited for harsh environments where the cost of electrical power production is high and traditional incandescent airfield lighting systems are difficult to maintain. RL lighting is typically a large-surface-area, low-intensity light source that operates 100% of the time. The RL light sources gradually decrease in brightness over time, so periodic replacement (every 6 to 8 years) is necessary. RL lighting functions best in low ambient light, which provides the high contrast ratios necessary for successful use of these devices. 12 figs., 8 tabs.

Tompkins, J.A. (Westinghouse Electric Corp., Las Vegas, NV (USA)); Haff, K.W.; Schultz, F.J. (Oak Ridge National Lab., TN (USA))

1990-09-01T23:59:59.000Z

110

Onsite Wastewater Treatment Systems: Ultraviolet Light Disinfection  

E-Print Network (OSTI)

Some onsite wastewater treatment systems include a disinfection component. This publication explains how homeowners can disinfect wastewater with ultraviolet light, what the components of such a system are, what factors affect the performance of a UV light disinfection system, and how to maintain such a system.

Lesikar, Bruce J.

2008-10-02T23:59:59.000Z

111

Multi-intersection Traffic Light Control Using Infinitesimal Perturbation Analysis  

E-Print Network (OSTI)

We address the traffic light control problem for multiple intersections in tandem by viewing it as a stochastic hybrid system and developing a Stochastic Flow Model (SFM) for it. Using Infinitesimal Perturbation Analysis (IPA), we derive on-line gradient estimates of a cost metric with respect to the controllable green and red cycle lengths. The IPA estimators obtained require counting traffic light switchings and estimating car flow rates only when specific events occur. The estimators are used to iteratively adjust light cycle lengths to improve performance and, in conjunction with a standard gradient-based algorithm, to obtain optimal values which adapt to changing traffic conditions. Simulation results are included to illustrate the approach.

Geng, Yanfeng

2012-01-01T23:59:59.000Z

112

Developing integrated envelop and lighting systems for commercial buildings  

SciTech Connect

Integrated envelope and lighting systems achieve significant energy, peak demand, and cost savings over typical component-by-component design practice by leveraging the interactive energy balance between electric lighting energy use and cooling due to lighting and solar radiation. We discuss how these savings can be achieved using conventional glazing and lighting components by taking an integrated systems design approach. We describe integrated dynamic envelope and lighting systems, currently under development, that actively achieve this energy balance through the use of intelligent control systems. We show how prototypical daylighting systems can be used to increase the efficacy and distribution of daylight throughout the space for the same or less glazing area as a typical window, while achieving greater energy savings with increased visual comfort. Energy performance simulations and field tests conducted to date illustrate significant energy savings, peak demand reductions, and potential practical implementation of these proposed systems.

Lee, E.S.; Selkowitz, S.E.; Rubinstein, F.M.; Klems, J.H.; Beltran, L.O.; DiBartolomeo, D.L.; Sullivan, R.

1994-03-01T23:59:59.000Z

113

Lighting Demonstrations in Defense Commissary Freezer Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

in Defense Commissary Freezer Systems New lighting technology reduces energy consumption while maintaining effective illumination The Defense Commissary Agency operates a...

114

Networked Control Systems Group  

Science Conference Proceedings (OSTI)

... and deploys measurement science for sensor networks and control systems used in manufacturing, construction, and other cyber-physical systems ...

2012-08-30T23:59:59.000Z

115

A living laboratory study in personalized automated lighting controls  

Science Conference Proceedings (OSTI)

We report on an experimental case study of personalized lighting controls built on top of an infrastructure designed to enable rapid development of applications in commercial buildings. Our personalized lighting controls (PLC) use an existing standard ... Keywords: energy management, lighting controls, web interface

Andrew Krioukov; Stephen Dawson-Haggerty; Linda Lee; Omar Rehmane; David Culler

2011-11-01T23:59:59.000Z

116

Lighting for remote viewing systems  

SciTech Connect

Scenes viewed by television do not provide the same channels of information for judgment of distances as scenes viewed directly, since television eliminates or degrades several depth perception cues. However, it may be possible to improve depth perception of televised scenes by enhancing the information available through depth cues that are available from lighting. A literature survey and expert opinions were integrated to design a remote lighting arrangement which could enhance depth perception of operators performing remote handling operations. This paper describes the lighting arrangement and discusses some of its advantages and disadvantages. 10 references, 2 figures.

Draper, J.V.

1984-01-01T23:59:59.000Z

117

Lighting for remote viewing systems  

SciTech Connect

Scenes viewed by television do not provide the same channels of information for judgement of distances as scenes viewed directly, since television eliminates or degrades several depth perception cues. However, it may be possible to improve depth perception of televised scenes by enhancing the information available through depth cues that are available from lighting. A literature survey and expert opinions were integrated to design a remote lighting arrangement which could enhance depth perception of operators performing remote handling operations. This paper describes the lighting arrangement and discusses some of its advantages and disadvantages. 10 references, 2 figures.

Draper, J.V.

1984-01-01T23:59:59.000Z

118

The design and evaluation of integrated envelope and lighting control strategies for commercial buildings  

SciTech Connect

This study investigates control strategies for coordinating the variable solar-optical properties of a dynamic building envelope system with a daylight controlled electric lighting system to reduce electricity consumption and increase comfort in the perimeter zone of commercial buildings. Control strategy design can be based on either simple, instantaneous measured data, or on complex, predictive algorithms that estimate the energy consumption for a selected operating state of the dynamic envelope and lighting system. The potential benefits of optimizing the operation of a dynamic envelope and lighting system are (1) significant reductions in electrical energy end-uses - lighting, and cooling due to solar and lighting heat gains - over that achieved by conventional static envelope and lighting systems, (2) significant reductions in peak demand, and (3) increased occupant visual and thermal comfort. The DOE-2 building energy simulation program was used to model two dynamic envelope and lighting systems, an automated venetian blind and an electrochromic glazing system, and their control strategies under a range of building conditions. The energy performance of simple control strategies are compared to the optimum performance of a theoretical envelope and lighting system to determine the maximum potential benefit of using more complex, predictive control algorithms. Results indicate that (1) predictive control algorithms may significantly increase the energy-efficiency of systems with non-optimal solar-optical properties such as the automated venetian blind, and (2) simpler, non-predictive control strategies may suffice for more advanced envelope systems 1 incorporating spectrally selective, narrow-band electrochromic coatings.

Lee, E.S.; Selkowitz, S.E.

1994-06-01T23:59:59.000Z

119

Lighting  

SciTech Connect

The lighting section of ASHRAE standard 90.1 is discussed. It applies to all new buildings except low-rise residential, while excluding specialty lighting applications such as signage, art exhibits, theatrical productions, medical and dental tasks, and others. In addition, lighting for indoor plant growth is excluded if designed to operate only between 10 p.m. and 6 a.m. Lighting allowances for the interior of a building are determined by the use of the system performance path unless the space functions are not fully known, such as during the initial stages of design or for speculative buildings. In such cases, the prescriptive path is available. Lighting allowances for the exterior of all buildings are determined by a table of unit power allowances. A new addition the exterior lighting procedure is the inclusion of facade lighting. However, it is no longer possible to trade-off power allotted for the exterior with the interior of a building or vice versa. A significant change is the new emphasis on lighting controls.

McKay, H.N. (Hayden McKay Lighting Design, New York, NY (US))

1990-02-01T23:59:59.000Z

120

Control system design method  

Science Conference Proceedings (OSTI)

A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

Wilson, David G. (Tijeras, NM); Robinett, III, Rush D. (Tijeras, NM)

2012-02-21T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Modern lighting sources and controls for energy efficient lighting and a smart control algorithm application  

Science Conference Proceedings (OSTI)

Energy is an important measure of prosperity of a nation. Energy has been the life-blood for continual progress of human civilization. Since the beginning of industrial revolution around two centuries ago, the global energy consumption has increased ... Keywords: energy efficiency, energy saving, fuzzy logic, modern lighting, sensors, smart controls

?afak Sa?lam; Bülent Oral

2010-10-01T23:59:59.000Z

122

Using Light to Control How X Rays Interact with Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the...

123

Section 5.4.4 Lighting Controls: Greening Federal Facilities...  

NLE Websites -- All DOE Office Websites (Extended Search)

dimming ballasts can lower the lighting power to as little as 1-10%, depending on the ballast type. Ev- ery time the lights are dimmed, energy is saved. DAYLIGHT CONTROLS...

124

Energy management/dimming system and control  

SciTech Connect

A method is described for operating a dimming system connected to a fluorescent lighting system. The fluorescent lighting system includes a ballast, fluorescent lamps and an AC source. The dimming system includes a switch connected in series with the ballast and a dimming control circuit for controlling the switch, the dimming control circuit adapted to turn on and off the switch at a high frequency during a notch period within each half-cycle of current supplied to the ballast by the AC source. It adapts to turn on the switch during the portions of each half-cycle outside of the notch period, the location and duration of the notch period being controlled by the dimming control circuit to provide a variable light output from the lighting system in response to a level command.

Alley, R.P.; Bicknell, W.H.; Routh, K.C.

1987-05-05T23:59:59.000Z

125

A smart GUI based air-conditioning and lighting controller for energy saving in building  

Science Conference Proceedings (OSTI)

This paper will concentrate on the algorithm and control strategies where the air-conditioners and lighting system can be controlled using microcontroller; a microcontroller is chosen due to its low cost and high flexibility. Conceptually, the controller ... Keywords: energy saving control system, graphic LCD, graphical user interface (GUI), microcontroller

M. F. Abas; N. MD. Saad; N. L. Ramli

2009-12-01T23:59:59.000Z

126

Jebel Ali Hotel PV lighting systems  

SciTech Connect

A large stand-alone PV lighting project was installed in June 1983 at the Jebel Ali Hotel in Dubai, United Arab Emirates. A high mast lighting system provides illumination for a 130 meter diameter traffic roundabout. The high mast system is powered by a 15 kilowatt peak array of Mobil Solar ribbon PV modules. Along the 700 meter access road leading to the hotel entrance, twenty-one PV powered streetlights provide low-level lighting. Each streetlight consists of a 20 watt fluorescent tube powered by two 35 Wp modules. Operation of both systems is completely automatic. Design, installation, and operating experience to date are reviewed.

Ellis, M.

1984-05-01T23:59:59.000Z

127

Timing system of the Swiss Light Source  

E-Print Network (OSTI)

The timing system of the Swiss Light Source is based on the event system concept of APS, Argonne [1]. However, for SLS the hardware was completely redesigned while preserving the software compatibility with the APS system. This gave us a head start in the implementation: we could use the latest available hardware and take advantage of the features integrated in the EPICS software. The event system is used as the sole timing distribution method, for hardware trigger delivery (assisted with a high-precision delay at a few places) and for controlling all the timing-related tasks of operation: injector sequencing, filling patterns, software synchronization, timestamps and so on. The event network is also extended to the beamlines to allow synchronization of the beamline experiments. The implementation consists of the hardware (Gigabit Ethernet link, FPGAs) and a firmware core written in VHDL. The functionality of the cards can be modified in situ by rewriting the firmware in flash memory. On the other hand, the f...

Korhonen, T T; Korhonen, Timo; Heiniger, Martin

2001-01-01T23:59:59.000Z

128

Intelligent Lighting System Using Wireless Sensor Networks  

E-Print Network (OSTI)

This paper examines the use of Wireless Sensor Networks interfaced with light fittings to allow for daylight substitution techniques to reduce energy usage in existing buildings. This creates a wire free system for existing buildings with minimal disruption and cost.

Kumaar, A A Nippun; TSB, Sudarshan; 10.5121/ijasuc.2010.1402

2011-01-01T23:59:59.000Z

129

West Oahu Solar Powered LED Lighting System  

Science Conference Proceedings (OSTI)

This report describes the design and construction of a solar powered lighting system on the island of Oahu that uses a new Light Emitting Diode (LED) lamp technology. With oil in limited supply and ever increasing energy costs, the construction of photovoltaic (PV) systems has the potential to reduce Hawaiis dependence on imported fossil fuels and help Hawaiian Electric Company (HECO) to meet Hawaiis Renewable Portfolio Standards (RPS).

2006-03-21T23:59:59.000Z

130

Power control architectures for cold cathode fluorescent lamp and light emitting diode based light sources.  

E-Print Network (OSTI)

?? In this dissertation, two different energy efficient power supply topologies are introduced for controlling cold cathode fluorescent lamp (CCFL) and high-brightness light emitting diode… (more)

Doshi, Montu V.

2010-01-01T23:59:59.000Z

131

How to Select Lighting Controls for Offices and Public Buildings  

NLE Websites -- All DOE Office Websites (Extended Search)

towards greater energy efficiency, while saving taxpayer dollars. How to Select Lighting Controls For Offices and Public Buildings LT-8 PAGE 1 DECEMBER 2000 Definitions...

132

Lighting system combining daylight concentrators and an artificial source  

DOE Patents (OSTI)

A combined lighting system for a building interior includes a stack of luminescent solar concentrators (LSC), an optical conduit made of preferably optical fibers for transmitting daylight from the LSC stack, a collimating lens set at an angle, a fixture for receiving the daylight at one end and for distributing the daylight as illumination inside the building, an artificial light source at the other end of the fixture for directing artifical light into the fixture for distribution as illumination inside the building, an automatic dimmer/brightener for the artificial light source, and a daylight sensor positioned near to the LSC stack for controlling the automatic dimmer/brightener in response to the daylight sensed. The system also has a reflector positioned behind the artificial light source and a fan for exhausting heated air out of the fixture during summer and for forcing heated air into the fixture for passage into the building interior during winter.

Bornstein, Jonathan G. (Miami, FL); Friedman, Peter S. (Toledo, OH)

1985-01-01T23:59:59.000Z

133

Deficiencies of Lighting Codes and Ordinances in Controlling Light Pollution from Parking Lot Lighting Installations.  

E-Print Network (OSTI)

??The purpose of this research was to identify the main causes of light pollution from parking lot electric lighting installations and highlight the deficiencies of… (more)

Royal, Emily

2012-01-01T23:59:59.000Z

134

Reflector system for a lighting fixture  

DOE Patents (OSTI)

Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope. 5 figs.

Siminovitch, M.J.; Page, E.; Gould, C.T.

1998-09-08T23:59:59.000Z

135

Reflector system for a lighting fixture  

DOE Patents (OSTI)

Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope.

Siminovitch, Michael J. (829 Manor Rd., El Sobrante, CA 94803); Page, Erik (Berkeley, CA); Gould, Carl T. (Medford, OR)

2001-01-01T23:59:59.000Z

136

Reflector system for a lighting fixture  

DOE Patents (OSTI)

Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope.

Siminovitch, Michael J. (El Sobrante, CA); Page, Erik (Berkeley, CA); Gould, Carl T. (Medford, OR)

1998-01-01T23:59:59.000Z

137

Automatic lighting controls demonstration: Long-term results. Final report, July 1991  

SciTech Connect

An advanced electronically ballasted lighting control system was installed in a portion of an office building to measure the energy and demand savings. The lighting control system used an integrated lighting control scenario that included daylight following, lumen depreciation correction, and scheduling. The system reduced lighting energy on weekdays by 62% and 51% in the north and south daylit zones, respectively, compared to a reference zone that did not have controls. During the summer, over 75% energy savings were achieved on weekdays in the north daylit zone. Even in the south interior zone, which benefitted lime from daylight, correction strategies and adjustment of the aisleway lights to a low level resulted in energy use of only half that of the reference zone. Although, in general, the savings varied over the year due to changing daylight conditions, the energy reduction achieved with controls could be fit using a simple analytical model. Significant savings also occurred during core operating hours when it is more expensive to supply and use energy. Compared to the usage in the reference zone, energy reductions of 49%, 44%, and 62% were measured in the south daylight, south interior, and north daylight zones, respectively, during core operating hours throughout the year. Lighting energy usage on weekends decreased dramatically in the zones with controls, with the usage in the north daylit zone only 10% that of the reference zone. A simple survey developed to assess occupant response to the lighting control system showed that the occupants were satisfied with the light levels provided.

Rubinstein, F. [Lawrence Berkeley Lab., CA (United States)

1991-10-18T23:59:59.000Z

138

Dynamic Electron Control using Light and Nanostructure.  

E-Print Network (OSTI)

??The advent of nano-technology has made possible the manipulation of electron or light through nanostructures. For example, a nano-tip in near-field optical microscopy allows imaging… (more)

Huang, Cheng-Wei

2013-01-01T23:59:59.000Z

139

Evaluation of Alternative Field Buses for Lighting ControlApplications  

Science Conference Proceedings (OSTI)

The Subcontract Statement of Work consists of two major tasks. This report is the Final Report in fulfillment of the contract deliverable for Task 1. The purpose of Task 1 was to evaluate existing and emerging protocols and standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The detailed task description follows: Task 1. Evaluate alternative sensor/field buses. The objective of this task is to evaluate existing and emerging standards for interfacing sensors and controllers for communicating with integrated lighting control systems in commercial buildings. The protocols to be evaluated will include at least: (1) 1-Wire Net, (2) DALI, (3) MODBUS (or appropriate substitute such as EIB) and (4) ZigBee. The evaluation will include a comparative matrix for comparing the technical performance features of the different alternative systems. The performance features to be considered include: (1) directionality and network speed, (2) error control, (3) latency times, (4) allowable cable voltage drop, (5) topology, and (6) polarization. Specifically, Subcontractor will: (1) Analyze the proposed network architecture and identify potential problems that may require further research and specification. (2) Help identify and specify additional software and hardware components that may be required for the communications network to operate properly. (3) Identify areas of the architecture that can benefit from existing standards and technology and enumerate those standards and technologies. (4) Identify existing companies that may have relevant technology that can be applied to this research. (5) Help determine if new standards or technologies need to be developed.

Koch, Ed; Rubinstein, Francis

2005-03-21T23:59:59.000Z

140

Design criteria for lighting and controls modifications OSW, CTF, COS buildings  

SciTech Connect

This project will retrofit the lighting systems in three (3) buildings at the Mound Plant. The buildings are Central Operational Support (COS), Component Test Facility (CTF) and operational Support West (OSW). This project consists of the installation of occupancy sensors in private offices, break areas and laboratories, automatic control lighting, (occupied/unoccupied) with the existing DDC system, removing selected light fixtures, replacing incandescent lighting and reprogramming some of the software controlling the operation of the air handling units in the a forementioned buildings.

1991-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Advanced Lighting Controls - My Venture from the Ivory Tower  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Lighting Controls - My Venture from the Ivory Tower Advanced Lighting Controls - My Venture from the Ivory Tower Speaker(s): Charlie Huizenga Date: June 15, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Dragan Charlie Curcija Lighting energy represents 30-40% of commercial building electricity consumption, yet very few buildings have advanced lighting controls. The potential energy savings are tremendous as is the opportunity to reduce demand on the grid during critical peak use periods. Charlie will describe how low-cost wireless radio technology developed at UC Berkeley and commercialized by Adura Technologies is creating a paradigm shift in the way we think about controlling lighting. Beyond deep energy savings and demand response, the technology offers personal control for occupants and

142

Stepping Motor Control System  

E-Print Network (OSTI)

This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

Larson, Noble G.

143

Renewable Energy Laboratory for Lighting Systems  

E-Print Network (OSTI)

Nowadays, the electric lighting is an important part of our lives and also represents a significant part of the electric power consumption. Alternative solutions such as renewable energy applied in this domain are thus welcomed. This paper presents a workstation conceived for the study of photovoltaic solar energy for lighting systems by students of power engineering and civil engineering faculty. The proposed system is realized to study the generated photovoltaic solar energy parameters for lighting systems. For an easier way to study the most relevant parameters virtual instrumentation is implemented. National Instruments LabWindows CVI environment is used as a platform for virtual instrumentation. For future developments remote communication feature intends to be added on which currently remote monitoring of solar photovoltaic energy and electric energy parameters are monitored.

Cristian, Dumitru

2010-01-01T23:59:59.000Z

144

Renewable Energy Laboratory for Lighting Systems  

E-Print Network (OSTI)

Nowadays, the electric lighting is an important part of our lives and also represents a significant part of the electric power consumption. Alternative solutions such as renewable energy applied in this domain are thus welcomed. This paper presents a workstation conceived for the study of photovoltaic solar energy for lighting systems by students of power engineering and civil engineering faculty. The proposed system is realized to study the generated photovoltaic solar energy parameters for lighting systems. For an easier way to study the most relevant parameters virtual instrumentation is implemented. National Instruments LabWindows CVI environment is used as a platform for virtual instrumentation. For future developments remote communication feature intends to be added on which currently remote monitoring of solar photovoltaic energy and electric energy parameters are monitored.

Dumitru Cristian; Gligor Adrian

2010-02-23T23:59:59.000Z

145

The California Advanced Lighting Controls Training Program (CALCTP...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency Program and Market Trends High Technology and Industrial Buildings Lighting Systems Residential Buildings Simulation Tools Sustainable Federal Operations Windows...

146

Quantifying National Energy Savings Potential of Lighting Controls...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency Program and Market Trends High Technology and Industrial Buildings Lighting Systems Residential Buildings Simulation Tools Sustainable Federal Operations Windows...

147

Using Light to Control How X Rays Interact with Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Using Light to Control How X Using Light to Control How X Rays Interact with Matter Using Light to Control How X Rays Interact with Matter Print Wednesday, 27 January 2010 00:00 Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the visible-light regime where an optical control pulse influences how an optical probe pulse interacts with a medium. This approach has opened new research directions in fields like quantum computing and nonlinear optics, while also spawning entirely new research areas, such as electromagnetically induced transparency and slow light. However, it has been unclear whether similar optical control schemes could be used to modify how x rays interact with matter. In a dramatic breakthrough demonstration at the ALS, a Berkeley Lab-Argonne National Laboratory group has now used powerful visible-light lasers to render a nominally opaque material transparent to x rays. While x-ray transparency will have immediate applications at x-ray light sources, the important result is that the findings lay a foundation for a broader spectrum of applications.

148

Evaluation of energy-efficiency in lighting systems using sensor networks  

Science Conference Proceedings (OSTI)

In modern energy aware buildings, lighting control systems are put in place so to maximise the energy-efficiency of the lighting system without effecting the comfort of the occupant. In many cases this involves utilising a set of presence sensors, with ... Keywords: building, decision, efficiency, energy, lighting, network, sensor, support

Declan T. Delaney; Gregory M. P. O'Hare; Antonio G. Ruzzelli

2009-11-01T23:59:59.000Z

149

Design, Control and Evaluation of a Prototype Three Phase Inverter in a BLDC Drive System for an Ultra-Light Electric Vehicle.  

E-Print Network (OSTI)

??With an evolving vehicle industry there has been an increase in the demand for light electric vehicles. This thesis was conducted in order to gain… (more)

Larsson, Philip

2013-01-01T23:59:59.000Z

150

Illuminating system and method for specialized and decorative lighting using liquid light guides  

DOE Patents (OSTI)

The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools.

Zorn, Carl J. (Yorktown, VA); Kross, Brian J. (Yorktown, VA); Majewski, Stanislaw (Grafton, VA); Wojcik, Randolph F. (Yorktown, VA)

1998-01-01T23:59:59.000Z

151

Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan  

NLE Websites -- All DOE Office Websites (Extended Search)

Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office Title Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office Publication Type Report LBNL Report Number LBNL-3831E Year of Publication 2010 Authors Rubinstein, Francis M., and Abby I. Enscoe Date Published 04/2010 Abstract An installation in a Federal building tested the effectiveness of a highly-controlled, workstation-specific lighting retrofit. The study took place in an open-office area with 86 cubicles and low levels of daylight. Each cubicle was illuminated by a direct/indirect pendant luminaire with three 32 watt lamps, two DALI ballasts, and an occupancy sensor. A centralized control system programmed all three lamps to turn on and off according to occupancy on a workstation-by-workstation basis. Field measurements taken over the course of several months demonstrated 40% lighting energy savings compared to a baseline without advanced controls that conforms to GSA's current retrofit standard. A photometric analysis found that the installation provided higher desktop light levels than the baseline, while an occupant survey found that occupants in general preferred the lighting system to the baseline. Simple payback is fairly high; projects that can achieve lower installation costs and/or higher energy savings and those in which greenhouse gas reduction and occupant satisfaction are significant priorities provide the ideal setting for workstation-specific lighting retrofits.

152

Advanced Lighting Controls - My Venture from the Ivory Tower  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Lighting Controls - My Venture from the Ivory Tower Speaker(s): Charlie Huizenga Date: June 15, 2012 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact: Dragan...

153

Control systems under attack?  

E-Print Network (OSTI)

The enormous growth of the Internet during the last decade offers new means to share and distribute both information and data. In Industry, this results in a rapprochement of the production facilities, i.e. their Process Control and Automation Systems, and the data warehouses. At CERN, the Internet opens the possibility to monitor and even control (parts of) the LHC and its four experiments remotely from anywhere in the world. However, the adoption of standard IT technologies to Distributed Process Control and Automation Systems exposes inherent vulnerabilities to the world. The Teststand On Control System Security at CERN (TOCSSiC) is dedicated to explore the vulnerabilities of arbitrary Commercial-Of-The-Shelf hardware devices connected to standard Ethernet. As such, TOCSSiC should discover their vulnerabilities, point out areas of lack of security, and address areas of improvement which can then be confidentially communicated to manufacturers. This paper points out risks of accessing the Control and Automa...

Lüders, Stefan

2005-01-01T23:59:59.000Z

154

The Epicure Control System  

SciTech Connect

The Epicure Control System supports the Fermilab fixed target physics program. The system is distributed across a network of many different types of components. The use of multiple layers on interfaces for communication between logical tasks fits the client-server model. Physical devices are read and controlled using symbolic references entered into a database with an editor utility. The database system consists of a central portion containing all device information and optimized portions distributed among many nodes. Updates to the database are available throughout the system within minutes after being requested.

Dambik, E.; Kline, D.; West, R.

1993-09-01T23:59:59.000Z

155

Light control of the flow of phototactic microswimmer suspensions  

E-Print Network (OSTI)

Some micro-algae are sensitive to light intensity gradients. This property is known as phototaxis: the algae swim toward a light source (positive phototaxis). We use this property to control the motion of micro-algae within a Poiseuille flow using light. The combination of flow vorticity and phototaxis results in a concentration of algae around the center of the flow. Intermittent light exposure allows analysis of the dynamics of this phenomenon and its reversibility. With this phenomenon, we hope to pave the way toward new algae concentration techniques (a bottleneck challenge in hydrogen algal production) and toward the improvement of pollutant bio-detector technology.

Xabel Garcia; Salima Rafaď; Philippe Peyla

2013-01-11T23:59:59.000Z

156

NUCLEAR REACTOR CONTROL SYSTEM  

DOE Patents (OSTI)

A control system is described for a nuclear reactor using enriched uranium fuel of the type of the swimming pool and other heterogeneous nuclear reactors. Circuits are included for automatically removing and inserting the control rods during the course of normal operation. Appropriate safety circuits close down the nuclear reactor in the event of emergency.

Epler, E.P.; Hanauer, S.H.; Oakes, L.C.

1959-11-01T23:59:59.000Z

157

LIGHTING CONTROLS: SURVEY OF MARKET POTENTIAL  

E-Print Network (OSTI)

usage exceeds 3500 hours annually. Lumen Depreciation Lightinglighting systems using new technologies will be avail- able in the mid 1980s). The projected energy usage

Verderber, R.R.

2010-01-01T23:59:59.000Z

158

Analyzing occupancy profiles from a lighting controls field study  

SciTech Connect

Despite a number of published studies on the effectiveness of lighting controls in buildings, only one US study examines the occupancy patterns of building occupants. Occupancy profiles allow one to determine, for example, the probability that an office is occupied for each hour of the workday. Occupancy profiles are useful for many purposes including: (1) predicting the effectiveness of occupancy sensors for reducing peak demand, (2) evaluating the impact of human activity on building lighting and other electric loads and (3) providing lighting equipment manufacturers with detailed lighting operation data to help evaluate the impact of advanced lighting controls on equipment life. In this paper, we examine the occupancy profiles for 35 single person offices at a large office building in San Francisco and analyze the data to obtain average occupancy as a function of time of day. In addition, we analyzed the data to identify how the use of occupancy sensors may affect switching cycles and lamp life.

Rubinstein, Francis; Colak, Nesrin; Jennings, Judith; Neils, Danielle

2003-04-30T23:59:59.000Z

159

Closing the Gap in Control System Implementations  

E-Print Network (OSTI)

Control Systems . . . . . . . . . . . . . . . . . .Continuous-Time Linear Control Systems . . . . .Discrete-Time Linear Control Systems . . . . . . . . . . .

Saha, Indranil

2013-01-01T23:59:59.000Z

160

Using Light to Control How X Rays Interact with Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Using Light to Control How X Rays Interact with Matter Print Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the visible-light regime where an optical control pulse influences how an optical probe pulse interacts with a medium. This approach has opened new research directions in fields like quantum computing and nonlinear optics, while also spawning entirely new research areas, such as electromagnetically induced transparency and slow light. However, it has been unclear whether similar optical control schemes could be used to modify how x rays interact with matter. In a dramatic breakthrough demonstration at the ALS, a Berkeley Lab-Argonne National Laboratory group has now used powerful visible-light lasers to render a nominally opaque material transparent to x rays. While x-ray transparency will have immediate applications at x-ray light sources, the important result is that the findings lay a foundation for a broader spectrum of applications.

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Using Light to Control How X Rays Interact with Matter  

NLE Websites -- All DOE Office Websites (Extended Search)

Using Light to Control How X Rays Interact with Matter Print Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the visible-light regime where an optical control pulse influences how an optical probe pulse interacts with a medium. This approach has opened new research directions in fields like quantum computing and nonlinear optics, while also spawning entirely new research areas, such as electromagnetically induced transparency and slow light. However, it has been unclear whether similar optical control schemes could be used to modify how x rays interact with matter. In a dramatic breakthrough demonstration at the ALS, a Berkeley Lab-Argonne National Laboratory group has now used powerful visible-light lasers to render a nominally opaque material transparent to x rays. While x-ray transparency will have immediate applications at x-ray light sources, the important result is that the findings lay a foundation for a broader spectrum of applications.

162

Interaction of lighting, heating, and cooling systems in buildings  

SciTech Connect

The interaction of building lighting and HVAC systems, and the effects on cooling load and lighting system performance, are being evaluated using a full-scale test facility at the National Institute of Standards and Technology. The results from a number of test configurations are described, including lighting system efficiency and cooling load due to lighting. The effect of lighting and HVAC system design and operation on performance is evaluated. Design considerations are discussed.

Treado, S.J.; Bean, J.W.

1992-03-01T23:59:59.000Z

163

The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings  

E-Print Network (OSTI)

of Highly Controlled Lighting for Offices and Commercialefficient, customized lighting for open-office cubicles.s “ambient” and “task” lighting components, 2) occupancy

Rubinstein, Francis

2010-01-01T23:59:59.000Z

164

TPB-coated Light Guides for Liquid Argon TPC Light Detection Systems  

E-Print Network (OSTI)

Light detection systems in Liquid Argon Time Projection Chambers (LArTPCs) require the detection of the 128 nm light produced during argon scintillation. Most detectors use Tetraphenyl Butadiene (TPB) to shift the wavelength of the light into a range visible to Photomultiplier Tubes (PMTs). These proceedings summarize characterizations of light-guides coated with a matrix of TPB in UV transmitting acrylic which are more compact than existing LArTPC light collection systems.

Ignarra, C M

2013-01-01T23:59:59.000Z

165

Strong Analytic Controllability for Hydrogen Control Systems  

E-Print Network (OSTI)

The realization and representation of so(4,2) associated with the hydrogen atom Hamiltonian are derived. By choosing operators from the realization of so(4,2) as interacting Hamiltonians, a hydrogen atom control system is constructed, and it is proved that this control system is strongly analytically controllable based on a time-dependent strong analytic controllability theorem.

Chunhua Lan; Tzyh-Jong Tarn; Quo-Shin Chi; John W. Clark

2004-09-22T23:59:59.000Z

166

SERVOMOTOR CONTROL SYSTEM  

DOE Patents (OSTI)

Control systems for automatic positioning of an electric motor operated vapor valve are described which is operable under the severe conditions existing in apparatus for electro-magnetlcally separating isotopes. In general, the system includes a rotor for turning the valve comprising two colls mounted mutually perpendicular to each other and also perpendicular to the magnetic field of the isotope separating apparatus. The coils are furnished with both a-c and d- c current by assoclate control circuitry and a position control is provided for varying the ratlo of the a-c currents in the coils and at the same time, but in an inverse manner, the ratio between the d-c currents in the coils is varied. With the present system the magnitude of the motor torque is constant for all valves of the rotor orientatlon angle.

MacNeille, S.M.

1958-12-01T23:59:59.000Z

167

ORNL light-duty vehicles PC system  

Science Conference Proceedings (OSTI)

This data system, designed by the Oak Ridge National Laboratory (ORNL) and funded by the US Department of Energy (DOE), monitors information on every light-duty vehicle (automobiles and light-duty trucks) sold in the United States since model year 1976. The data are specified in two days. One way is on a model basis (i.e, engine and transmission combinations) and includes data on city, highway, and combined fuel economies; engine size; drive-train; fuel type (gasoline or diesel); interior volume; body type; and other vehicle attributes. The other way is on a make basis (e.g., Ford Escort, Oldsmobile 98) and includes data on sales; Environmental Protection Agency (EPA) size class; the sales-weighted fuel economy; sales-weighted interior volume; sales-weighted engine displacement (cid); curb weight; and other attributes. A unique identification number is assigned to a specific vehicle category. This identification number contains information on the manufacturer, the location of the manufacturer (domestic or import), and the sponsorship of the vehicle (domestic or import). Fuel economies, model year sales and various vehicle characteristics for every make of the 164 million light-duty vehicles sold in the US since model year 1976 can be obtained from this data system. 2 figs., 4 tabs.

Hu, P.S.; Patterson, P.D. (Oak Ridge National Lab., TN (USA))

1989-01-01T23:59:59.000Z

168

New Energy-Saving Fiber Optic Lighting System Lights Up Public Spaces  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Focus to develop a Energy Focus to develop a breakthrough lighting technology that delivers light comparable to conventional lamps while using significantly less energy per lumen, reducing watts per square foot without sacrificing light levels. As a result of DOE SBIR and other government funding, EFO (efficient fiber optics) Lighting Systems can deliver as much as 80% energy savings over halogen or

169

High-frequency Light Reflector via Low-frequency Light Control  

E-Print Network (OSTI)

We show that the momentum of light can be reversed via the atomic coherence created by another light with one or two orders of magnitude lower frequency. Both the backward retrieval of single photons from a time-ordered Dicke state and the reflection of continuous waves by high-order photonic band gaps are analyzed. A proof-of-principle experiment with thermal Rb vapor is proposed based on presently available techniques. This holds promise for X-ray reflectors controlled by low-frequency light.

Wang, Da-Wei; Evers, Joerg; Scully, Marlan O

2013-01-01T23:59:59.000Z

170

Securing Control Systems Modems  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recommended Practice for Securing Recommended Practice for Securing Control System Modems January 2008 iii ABSTRACT This paper addresses an often overlooked "backdoor" into critical infrastructure control systems created by modem connections. A modem's connection to the public telephone system is similar to a corporate network connection to the Internet. By tracing typical attack paths into the system, this paper provides the reader with an analysis of the problem and then guides the reader through methods to evaluate existing modem security. Following the analysis, a series of methods for securing modems is provided. These methods are correlated to well-known networking security methods. iv ACKNOWLEDGEMENT This document was developed for the U.S. Department of Homeland

171

Electric turbocompound control system  

DOE Patents (OSTI)

Turbocompound systems can be used to affect engine operation using the energy in exhaust gas that is driving the available turbocharger. A first electrical device acts as a generator in response to turbocharger rotation. A second electrical device acts as a motor to put mechanical power into the engine, typically at the crankshaft. Apparatus, systems, steps, and methods are described to control the generator and motor operations to control the amount of power being recovered. This can control engine operation closer to desirable parameters for given engine-related operating conditions compared to actual. The electrical devices can also operate in "reverse," going between motor and generator functions. This permits the electrical device associated with the crankshaft to drive the electrical device associated with the turbocharger as a motor, overcoming deficient engine operating conditions such as associated with turbocharger lag.

Algrain, Marcelo C. (Dunlap, IL)

2007-02-13T23:59:59.000Z

172

Generating polarization controllable FELs at Dalian coherent light source  

E-Print Network (OSTI)

The property of the FEL polarization is of great importance to the user community. FEL pulses with ultra-high intensity and flexible polarization control ability will absolutely open up new scientific realms. In this paper, several polarization control approaches are presented to investigate the great potential on Dalian coherent light source, which is a government-approved novel FEL user facility with the capability of wavelength continuously tunable in the EUV regime of 50-150 nm. The numerical simulations show that both circularly polarized FELs with highly modulating frequency and 100 microjoule level pulse energy could be generated at Dalian coherent light source.

Zhang, T; Wang, D; Zhao, Z T; Zhang, W Q; Wu, G R; Dai, D X; Yang, X M

2013-01-01T23:59:59.000Z

173

Energy and lighting design  

SciTech Connect

A detailed examination of the current energy conservation practices for lighting systems is presented. This first part of a two-part presentation covers the following: energy and lighting design; lighting and energy standards; lighting efficiency factors; light control and photometrics; lighting and the architectural interior; luminaire impact on the environment; basic design techniques; the lighting power budget; and conservation through control.

Helms, R.N.

1979-11-01T23:59:59.000Z

174

Controller synthesis for networked control systems  

Science Conference Proceedings (OSTI)

This paper presents a discrete-time model for networked control systems (NCSs) that incorporates all network phenomena: time-varying sampling intervals, packet dropouts and time-varying delays that may be both smaller and larger than the sampling interval. ... Keywords: Linear matrix inequalities, Networked control systems, Sampled-data control, Stability analysis, Time-varying delay

M. B. G. Cloosterman; L. Hetel; N. van de Wouw; W. P. M. H. Heemels; J. Daafouz; H. Nijmeijer

2010-10-01T23:59:59.000Z

175

Illuminating system and method for specialized and decorative lighting using liquid light guides  

DOE Patents (OSTI)

The present invention comprises an illumination system for specialized decorative lighting including a light source, a flexible plastic tube sheath for distributing the light to a remote location, a transparent liquid core filling the tube that has an index of refraction greater than that of the plastic tube and an arrangement where light coupled from the light source is caused to leak from the liquid light guide at desired locations for the purposes of specialized lighting, such as underwater illumination in swimming pools. 5 figs.

Zorn, C.J.; Kross, B.J.; Majewski, S.; Wojcik, R.F.

1998-08-25T23:59:59.000Z

176

The MedAustron Accelerator Control System  

E-Print Network (OSTI)

This paper presents the architecture and design of the MedAustron accelerator control system. This ion therapy and research facility is currently under construction in Wr. Neustadt, Austria. The accelerator and its control system are designed at CERN. This class of machine is characterized by rich sets of configuration data, real-time reconfiguration needs and high stability requirements. The machine is operated according to a pulse-to-pulse modulation scheme. Each beam cycle is described in terms of ion type, energy, beam dimensions, intensity and spill length. The control system is based on a multi-tier architecture with the aim to achieve a clear separation between front-end devices and their controllers. In-house developments cover a main timing system, a light-weight layer to standardize operation and communication of front-end controllers, fast and slow control of power converters and a procedure programming framework for automating high-level control and data analysis tasks.

Gutleber, J; Marchhart, M; Torcato de Matos, C; Dedic, J; Moser, R

2011-01-01T23:59:59.000Z

177

Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade  

DOE Patents (OSTI)

A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

2002-01-01T23:59:59.000Z

178

Incoherent Control of Locally Controllable Quantum Systems  

E-Print Network (OSTI)

An incoherent control scheme for state control of locally controllable quantum systems is proposed. This scheme includes three steps: (1) amplitude amplification of the initial state by a suitable unitary transformation, (2) projective measurement on the amplified state, and (3) final optimization by a unitary controlled transformation. The first step increases the amplitudes of some desired eigenstates and the corresponding probability of observing these eigenstates, the second step projects, with high probability, the amplified state into a desired eigenstate, and the last step steers this eigenstate into the target state. Within this scheme, two control algorithms are presented for two classes of quantum systems. As an example, the incoherent control scheme is applied to the control of a hydrogen atom by an external field. The results support the suggestion that projective measurements can serve as an effective control and local controllability information can be used to design control laws for quantum systems. Thus, this scheme establishes a subtle connection between control design and controllability analysis of quantum systems and provides an effective engineering approach for controlling quantum systems with partial controllability information.

Daoyi Dong; Chenbin Zhang; Herschel Rabitz; Alexander Pechen; Tzyh-Jong Tarn

2008-10-21T23:59:59.000Z

179

The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings  

SciTech Connect

The paper presents results from pilot studies of new 'workstation-specific' luminaires that are designed to provide highly, efficient, customized lighting for open-office cubicles. Workstation specific luminaires have the following characteristics: (1) they provide separate, dimming control of the cubicle's 'ambient' and 'task' lighting components, (2) occupancy sensors and control photosensors are integrated into the fixture's design and operation, (3) luminaires can be networked using physical cabling, microcontrollers and a PC running control software. The energy savings, demand response capabilities and quality of light from the two WS luminaires were evaluated and compared to the performance of a static, low-ambient lighting system that is uncontrolled. Initial results from weeks of operation provide strong indication that WS luminaires can largely eliminate the unnecessary lighting of unoccupied cubicles while providing IESNA-required light levels when the cubicles are occupied. Because each cubicle's lighting is under occupant sensor control, the WS luminaires can capitalize on the fact cubicles are often unoccupied during normal working hours and reduce their energy use accordingly.

Rubinstein, Francis; Bolotov, Dmitriy; Levi, Mark; Powell, Kevin; Schwartz, Peter

2008-08-17T23:59:59.000Z

180

A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings  

E-Print Network (OSTI)

Technologies Program: hotel guest room energy controls. Sanhotel and institutional bathroom lighting. [CEC] California Energy

Williams, Alison

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Crawling the Control System  

SciTech Connect

Information about accelerator operations and the control system resides in various formats in a variety of places on the lab network. There are operating procedures, technical notes, engineering drawings, and other formal controlled documents. There are programmer references and API documentation generated by tools such as doxygen and javadoc. There are the thousands of electronic records generated by and stored in databases and applications such as electronic logbooks, training materials, wikis, and bulletin boards and the contents of text-based configuration files and log files that can also be valuable sources of information. The obvious way to aggregate all these sources is to index them with a search engine that users can then query from a web browser. Toward this end, the Google "mini" search appliance was selected and implemented because of its low cost and its simple web-based configuration and management. In addition to crawling and indexing electronic documents, the appliance provides an API that has been used to supplement search results with live control system data such as current values of EPICS process variables and graphs of recent data from the archiver.

Theodore Larrieu

2009-10-01T23:59:59.000Z

182

Optimal control for biological movement systems  

E-Print Network (OSTI)

of hierarchical control system (results obtained afterthe greatest discovery in control and systems theory of theloop Control System. . . . . . . . . . . . . . . . . . . 10

Li, Weiwei

2006-01-01T23:59:59.000Z

183

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

on control systems . . . . . . . . . . . . . . . . 7.2control system. . . . . . . . . . . . . . . . . . . . . . . . . .8 Stabilization of Networked Control Systems using 8.1

Amin, Saurabh

2011-01-01T23:59:59.000Z

184

The Advantage of Highly Controlled Lighting for Offices and Commercial  

NLE Websites -- All DOE Office Websites (Extended Search)

The Advantage of Highly Controlled Lighting for Offices and Commercial The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings Title The Advantage of Highly Controlled Lighting for Offices and Commercial Buildings Publication Type Conference Paper LBNL Report Number LBNL-2514E Year of Publication 2008 Authors Rubinstein, Francis M., Dmitriy Bolotov, Mark S. Levi, Kevin Powell, and P. Schwartz Conference Name 2008 ACEEE Summer Study on Energy Efficiency in Buildings Volume 78 Call Number LBNL-2514E Abstract A dual-cathode arc plasma source was combined with a computer-controlled bias amplifier such as to synchronize substrate bias with the pulsed production of plasma. In this way, bias can be applied in a material-selective way. The principle has been applied to the synthesis metal-doped diamond-like carbon films, where the bias was applied and adjusted when the carbon plasma was condensing, and the substrate was at ground when the metal was incorporated. In doing so, excessive sputtering by too-energetic metal ions can be avoided while the sp3/sp2 ratio can be adjusted. It is shown that the resistivity of the film can be tuned by this species-selective bias. The principle can be extended to multiple-material plasma sources and complex materials.

185

Optimal Control of Distillation Systems  

E-Print Network (OSTI)

The optimum performance of a distillation system can be evaluated by examining the product purities, the product recoveries, and the system's capability to respond to small or large, expected or unexpected, plant disturbances. An optimal control system should include accurate instrumentation, closed loop purity control, and a computer system to execute direct digital control with appropriate feed-forward algorithms.

Chatterjee, N.; Suchdeo, S. R.

1984-01-01T23:59:59.000Z

186

Weak localization of light in superdiffusive random systems  

E-Print Network (OSTI)

L\\'evy flights constitute a broad class of random walks that occur in many fields of research, from animal foraging in biology, to economy to geophysics. The recent advent of L\\'evy glasses allows to study L\\'evy flights in controlled way using light waves. This raises several questions about the influence of superdiffusion on optical interference effects like weak and strong localization. Super diffusive structures have the extraordinary property that all points are connected via direct jumps, meaning that finite-size effects become an essential part of the physical problem. Here we report on the experimental observation of weak localization in L\\'evy glasses and compare results with recently developed optical transport theory in the superdiffusive regime. Experimental results are in good agreement with theory and allow to unveil how light propagates inside a finite-size superdiffusive system.

Burresi, Matteo; Savo, Romolo; Bertolotti, Jacopo; Vynck, Kevin; Wiersma, Diederik S

2011-01-01T23:59:59.000Z

187

SUBSURFACE REPOSITORY INTEGRATED CONTROL SYSTEM DESIGN  

Science Conference Proceedings (OSTI)

The purpose of this document is to develop preliminary high-level functional and physical control system architectures for the proposed subsurface repository at Yucca Mountain. This document outlines overall control system concepts that encompass and integrate the many diverse systems being considered for use within the subsurface repository. This document presents integrated design concepts for monitoring and controlling the diverse set of subsurface operations. The subsurface repository design will be composed of a series of diverse systems that will be integrated to accomplish a set of overall functions and objectives. The subsurface repository contains several Instrumentation and Control (I&C) related systems including: waste emplacement systems, ventilation systems, communication systems, radiation monitoring systems, rail transportation systems, ground control monitoring systems, utility monitoring systems (electrical, lighting, water, compressed air, etc.), fire detection and protection systems, retrieval systems, and performance confirmation systems. Each of these systems involve some level of I&C and will typically be integrated over a data communication network. The subsurface I&C systems will also integrate with multiple surface-based site-wide systems such as emergency response, health physics, security and safeguards, communications, utilities and others. The scope and primary objectives of this analysis are to: (1) Identify preliminary system level functions and interface needs (Presented in the functional diagrams in Section 7.2). (2) Examine the overall system complexity and determine how and on what levels these control systems will be controlled and integrated (Presented in Section 7.2). (3) Develop a preliminary subsurface facility-wide design for an overall control system architecture, and depict this design by a series of control system functional block diagrams (Presented in Section 7.2). (4) Develop a series of physical architectures that present preliminary concepts for integrating the diverse set of control systems to be used within the subsurface repository facility (Presented in Section 7.3). (5) Develop initial concepts for an overall subsurface data communication system that can be used to integrate critical and data-intensive control systems (Presented in Section 7.4). (6) Discuss technology trends and control system design issues (Presented in Section 7.5).

C.J. Fernado

1998-09-17T23:59:59.000Z

188

Advanced optical daylighting systems: light shelves and light pipes  

SciTech Connect

We present two perimeter daylighting systems that passively redirect beam sunlight further from the window wall using special optical films, an optimized geometry, and a small glazing aperture. The objectives of these systems are (1) to increase daylight illuminance levels at 4.6-9.1 m (15-30 ft) from the window aperture with minimum solar heat gains and (2) to improve the uniformity of the daylighting luminance gradient across the room under variable solar conditions throughout the year. The designs were developed through a series of computer-assisted ray-tracing studies, laser visualization techniques, and photometric measurements and observations using physical scale models. Bi-directional illuminance measurements in combination with analytical routines were then used to simulate daylight performance for any solar position, and were incorporated into the DOE-2.1E building energy analysis computer program to evaluate energy savings. Results show increased daylight levels and an improved luminance gradient throughout the year compared to conventional daylighting systems.

Beltran, L.O.; Lee, E.S.; Selkowitz, S.E.

1996-05-01T23:59:59.000Z

189

Energy Conservation Utilizing Wireless Dimmable Lighting Control in a Shared-Space Office  

E-Print Network (OSTI)

powered, the limited-energy issue typical with other wireless sensor networks powered by batteries is non energy usage of the entire system, and to reinforce the wireless network links and compensate for lostEnergy Conservation Utilizing Wireless Dimmable Lighting Control in a Shared-Space Office Yao

Agogino, Alice M.

190

ARCS – Access Rate Control System  

protected steel housing. ... Access Rate Control System This rugged, maintenance- ... Y-12 is seeking an industry partner to fully com-

191

Exercise Control System Press Release  

Science Conference Proceedings (OSTI)

MEL Transfers its Web-Based Emergency Response Exercise Control System. During FY05-FY07 the MEL staff worked ...

2010-10-05T23:59:59.000Z

192

NSLS control system upgrade status  

SciTech Connect

The NSLS control system initially installed in 1978 has undergone several modifications but the basic system architecture remained relatively unchanged. The need for faster response, increased reliability and better diagnostics made the control system upgrade a priority. Since the NSLS runs continuously, major changes to the control system are difficult. The upgrade plan had to allow continuous incremental changes to the control system without having any detrimental effect on operations. The plan had to provide for immediate improvement in a few key areas, such as data access rates, and be complete in a short time. At present, most accelerator operations utilize the upgraded control system.

Smith, J.; Ramamoorthy, S.; Tang, Y.; Flannigan, J.; Sathe, S.; Keane, J.; Krinsky, S.

1993-07-01T23:59:59.000Z

193

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors.

Anderson, B; Dervan, P J; Lauber, J A; Thomas, J

1999-01-01T23:59:59.000Z

194

The role of ambient intelligence in future lighting systems  

Science Conference Proceedings (OSTI)

LED-based lighting systems have introduced radically new possibilities in the area of artificial lighting. Being physically small the LED can be positioned or embedded into luminaires, materials and even the very fabric of a building or environment. ... Keywords: LED, ambient intelligence, lighting, user interaction

Dzmitry Aliakseyeu; Jon Mason; Bernt Meerbeek; Harm van Essen; Serge Offermans

2011-11-01T23:59:59.000Z

195

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors.

B. Anderson; A. Anjomshoaa; P. Dervan; J. A. Lauber; J. Thomas

1998-10-26T23:59:59.000Z

196

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors. 1

B. Anderson; A. Anjomshoaa; P. Dervan; J. A. Lauber; J. Thomas

2008-01-01T23:59:59.000Z

197

TRICOLOR LIGHT EMITTING DIODE DOT MATRIX DISPLAY SYSTEM WITHAUDIO OUTPUT  

E-Print Network (OSTI)

1 TRICOLOR LIGHT EMITTING DIODE DOT MATRIX DISPLAY SYSTEM WITHAUDIO OUTPUT Grantham Pang, Chi emitting diodes; tricolor display; audio communication. I. Introduction This paper relates to a tricolor broadcasting through the visible light rays transmitted by the display panel or assembly. Keywords: light

Pang, Grantham

198

Evaluation of Alternative Field Buses for Lighting Control Applications  

E-Print Network (OSTI)

of standards. WILA’s ergonomic lighting forms the basis forachievement with motivating and health enhancing lighting.We create professional lighting for professionals. DALI

Koch, Ed; Rubinstein, Francis

2005-01-01T23:59:59.000Z

199

Systems Integration at Kansas City Power and Light Using API and ICCP  

Science Conference Proceedings (OSTI)

Application Program Interfaces (API) and the Inter-Control Center Communications Protocol (ICCP) offer tools for integrating utility information systems. This report documents the efforts of Kansas Power & Light (KCPL) to integrate several of its operations systems, including its energy management system (EMS) and distribution management system.

1998-10-23T23:59:59.000Z

200

Environment control system  

SciTech Connect

A system for controlling the environment of an enclosed area in nuclear reactor installations. The system permits the changing of the environment from nitrogen to air, or from air to nitrogen, without the release of any radioactivity or process gas to the outside atmosphere. In changing from a nitrogen to an air environment, oxygen is inserted into the enclosed area at the same rate which the nitrogen-oxygen gas mixture is removed from the enclosed area. The nitrogen-oxygen gas mixture removed from the enclosed area is mixed with hydrogen, the hydrogen recombining with the oxygen present in the gas to form water. The water is then removed from the system and, if it contains any radioactive products, can be utilized to form concrete, which can then be transferred to a licensed burial site. The process gas is purified further by stripping it of carbon dioxide and then distilling it to remove any xenon, krypton, and other fission or non-condensable gases. The pure nitrogen is stored as either a cryogenic liquid or a gas. In changing from an air to nitrogen environment, the gas is removed from the enclosed area, mixed with hydrogen to remove the oxygen present, dried, passed through adsorption beds to remove any fission gases, and reinserted into the enclosed area. Additionally, the nitrogen stored during the nitrogen to air change, is inserted into the enclosed area, the nitrogen from both sources being inserted into the enclosed area at the same rate as the removal of the gas from the containment area. As designed, the amount of nitrogen stored during the nitrogen to air change substantially equals that required to replace oxygen removed during an air to nitrogen change.

Sammarone, Dino G. (Edgewood Borough, PA)

1978-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office  

E-Print Network (OSTI)

If you could change the lighting in your office, what wouldapply. Highly-Controlled Lighting 50 of 50 April 19, 2010Europa 2009, 11th European Lighting Conference, Istanbul,

Rubinstein, Francis

2010-01-01T23:59:59.000Z

202

Image Recognition System for Automated Lighting Retrofit Assessment  

E-Print Network (OSTI)

Buildings are responsible for approximately 40% of all US energy use and carbon emissions. Lighting technologies continue to evolve, leading to potential energy savings through retrofits of lighting systems. Building lighting systems is typically the first item evaluated by commercial and industrial energy auditors. This paper presents the first phase of a project to develop unmanned aerial and ground vehicles capable of conducting autonomous energy audits of commercial buildings. The paper presents a prototype system that can enumerate and classify the lighting in a building using an optical camera, accelerometer, spectrometer, and distance sensor. As the aerial vehicle navigates throughout a room, the prototype system captures images and collects frequency data of lighting. The system employs image recognition techniques to quantify lighting in each room. Using the unique frequency spectrum of each lighting type, the prototype system classifies the different types of lighting with the spectrometer. An accompanying software program then analyzes the quantity and type of lighting to recommend economical alternatives, or lighting retrofits.

Venable, K.; Bhatia, D.; Coverick, R.; Gutierrez, C.; Knight, J.; McGarry, D.; McGee, K.; Smith, Z.; Terrill, T. J.; Vanderford, B.; Weiser, R.; Wightman, K.; Rasmussen, B. P.

2013-01-01T23:59:59.000Z

203

EK101 Engineering Light Smart Lighting  

E-Print Network (OSTI)

extensively in concert lighting and are finding increased usage in dance lighting because refers to the upstage back curtain (is white or a light color), which can be us for lighting or special Mixer #12;Monitor House speaker Lighting System Control Board: Similar to the sound board, the light

Bifano, Thomas

204

Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office  

SciTech Connect

An installation in a Federal building tested the effectiveness of a highly-controlled, workstation-specific lighting retrofit. The study took place in an open-office area with 86 cubicles and low levels of daylight. Each cubicle was illuminated by a direct/indirectpendant luminaire with three 32 watt lamps, two dimmable DALI ballasts, and an occupancy sensor. A centralized control system programmed all three lamps to turn on and off according to occupancy on a workstation-by-workstation basis. Field measurements taken over the course of several monthsdemonstrated 40% lighting energy savings compared to a baseline without advanced controls that conforms to GSA's current retrofit standard. A photometric analysis found that the installation provided higher desktop light levels than the baseline, while an occupant survey found that occupants in general preferred the lighting system to thebaseline.Simple payback is fairly high; projects that can achieve lower installation costs and/or higher energy savings and those in which greenhouse gas reduction and occupant satisfaction are significant priorities provide the ideal setting for workstation-specific lighting retrofits.

Rubinstein, Francis; Enscoe, Abby

2010-04-19T23:59:59.000Z

205

How to Select Lighting Controls for Offices and Public Buildings  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Efficiency and Renewable Energy Energy Efficiency and Renewable Energy Why Agencies Should Buy Efficient Products s Executive Order 13123 and FAR section 23.704 direct agencies to purchase products in the upper 25% of energy efficiency, including all models that qualify for the EPA/DOE ENERGY STAR ® product labeling program. s Agencies that use these guidelines to buy efficient products can realize substantial operating cost savings and help prevent pollution. s As the world's largest consumer, the federal government can help "pull" the entire U.S. market towards greater energy efficiency, while saving taxpayer dollars. How to Select Lighting Controls For Offices and Public Buildings LT-8 PAGE 1 DECEMBER 2000 Definitions Daylight dimming employs sensors that detect ambient light levels and then allow ballasts to

206

The lightspeed automatic interactive lighting preview system  

E-Print Network (OSTI)

We present an automated approach for high-quality preview of feature-film rendering during lighting design. Similar to previous work, we use a deep-framebuffer shaded on the GPU to achieve interactive performance. Our first ...

Ragan-Kelley, Jonathan Millard

2007-01-01T23:59:59.000Z

207

The averaged control system of fast oscillating control systems  

E-Print Network (OSTI)

For control systems that either have an explicit periodic dependence on time or have periodic solutions and small controls, we define an average control system that takes into account all possible variations of the control, and prove that its solutions approximate all solutions of the oscillating systems as oscillations go faster. The dimension of its velocity set is characterised geomtrically. When it is maximum the average system defines a Finsler metric, unfortunately not twice differntiable in general. Under particular assumptions, valid for the control two body system, this Finsler metric generates a Hamiltonian flow on the cotangent bundle. For minimum time control, this average system proves that averaging the Hamiltonian given by the maximum principle is a valid approximation.

Bombrun, Alex

2011-01-01T23:59:59.000Z

208

Connecticut Light & Power - Commercial Energy Efficiency Rebates...  

Open Energy Info (EERE)

Technologies Lighting, Lighting ControlsSensors, Heat pumps, Central Air conditioners, Energy Mgmt. SystemsBuilding Controls, Motors, HVAC Controls Active Incentive No...

209

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

Market in Western Kenya: LED Alternatives and Consumerfor Emerging Off-grid White-LED Illumination Systems forReport #4 Measured Off-Grid LED Lighting System Performance

Granderson, Jessica

2009-01-01T23:59:59.000Z

210

CONTROL OF DIESEL ENGINE UREA SELECTIVE CATALYTIC REDUCTION SYSTEMS.  

E-Print Network (OSTI)

??A systematic nonlinear control methodology for urea-SCR systems applicable for light-to-heavy-duty Diesel engine platforms in a variety of on-road, off-road, and marine applications is developed… (more)

Hsieh, Ming-Feng

2010-01-01T23:59:59.000Z

211

Evaluation of Alternative Field Buses for Lighting Control Applications  

NLE Websites -- All DOE Office Websites (Extended Search)

Alternative Field Buses Alternative Field Buses for Lighting Control Applications Prepared By: Ed Koch, Akua Controls Francis Rubinstein, Lawrence Berkeley National Laboratory Prepared For: Broadata Communications Torrence, CA May 15, 2005 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by its trade name,

212

Daylighting control systems : Daylighting The New York Times Building  

NLE Websites -- All DOE Office Websites (Extended Search)

control systems control systems Overview The architectural approach The owner's approach Daylighting field study Daylighting control systems Automated roller shades Procurement specifications Shades and Shade Controls Lighting Controls Visualizing daylight Commissioning/ verification Demand response Mainstream solutions Post-occupancy evaluation Publications Sponsors Project team Daylighting control systems Lighting energy savings were greater in zones daylit bilaterally from both the southwest and northwest facades, typically 50-60% at 11 feet from the windows and 25-40% at 14-25 feet from the façade. Total illuminance was maintained in all lighting zones to within -10% of the setpoint for 95-100% of the day throughout most of the nine-month monitored period. Daylight "harvesting" strategies are implemented using daylighting control systems that dim the electric lighting in response to interior daylight levels. For commercial applications, the light output of fluorescent lamps (T5 or T8) are varied by using electronic dimming ballasts. Photosensors, typically mounted in the ceiling, are used to measure the quantity of daylight in the space then determine the amount of dimming required to maintain the design work plane illuminance level. If daylight levels are more than adequate, the electric lights can be shut off. Simulation studies indicate that annual energy use and peak demand can be reduced by 20-30% compared to a non-daylit building. These technological solutions are increasingly becoming one of the key means to achieving compliance with stringent energy-efficiency standards and achieving LEED ratings for sustainable design.

213

Personalized HVAC control system  

E-Print Network (OSTI)

We present a novel method of building comfort control, focused around the occupant. Custom sensing, communication, and actuation hardware were developed to locate users in a building, and measure various parameters directly ...

Feldmeier, Mark Christopher

214

Advanced CIDI Emission Control System Development  

DOE Green Energy (OSTI)

Ford Motor Company, with ExxonMobil and FEV, participated in the Department of Energy's (DOE) Ultra-Clean Transportation Fuels Program with the goal to develop an innovative emission control system for light-duty diesel vehicles. The focus on diesel engine emissions was a direct result of the improved volumetric fuel economy (up to 50%) and lower CO2 emissions (up to 25%) over comparable gasoline engines shown in Europe. Selective Catalytic Reduction (SCR) with aqueous urea as the NOx reductant and a Catalyzed Diesel Particulate Filter (CDPF) were chosen as the primary emission control system components. The program expected to demonstrate more than 90% durable reduction in particulate matter (PM) and NOx emissions on a light-duty truck application, based on the FTP-75 drive cycle. Very low sulfur diesel fuel (<15 ppm-wt) enabled lower PM emissions, reduced fuel economy penalty due to the emission control system and improved long-term system durability. Significant progress was made toward a durable system to meet Tier 2 Bin 5 emission standards on a 6000 lbs light-duty truck. A 40% reduction in engine-out NOx emissions was achieved with a mid-size prototype diesel engine through engine recalibration and increased exhaust gas recirculation. Use of a rapid warm-up strategy and urea SCR provided over 90% further NOx reduction while the CDPF reduced tailpipe PM to gasoline vehicle levels. Development work was conducted to separately improve urea SCR and CDPF system durability, as well as improved oxidation catalyst function. Exhaust gas NOx and ammonia sensors were also developed further. While the final emission control system did not meet Tier 2 Bin 5 NOx after 120k mi of aging on the dynamometer, it did meet the standards for HC, NMOG, and PM, and an improved SCR catalyst was shown to have potential to meet the NOx standard, assuming the DOC durability could be improved further. Models of DOC and SCR function were developed to guide the study of several key design factors for SCR systems and aid in the development of urea control strategy for maximum NOx reduction with minimum NH3 slip. A durable co-fueling system was successfully built and tested, with the help of service station nozzle and dispenser manufacturers, for simultaneous delivery of diesel fuel and aqueous urea to the vehicle. The business case for an aqueous urea infrastructure in the US for light-duty vehicles was explored.

Lambert, Christine

2006-05-31T23:59:59.000Z

215

LIGHTING RESEARCH PROGRAM Project 4.5 Integrated Classroom Lighting System  

E-Print Network (OSTI)

lighting system must be flexible and able to adjust to different daylight conditions. Adding automated levels based on the amount of daylight in the classroom. The system should use a separate switch for each the ICLS that was developed in Project 4.5. - Luminaires: i. An indirect luminaire with an optical system

216

Nonlinear Control of Delay and PDE Systems  

E-Print Network (OSTI)

Conference on Control and Systems, 1997. [151] O. Roesch, H.Adaptive Control for Systems with Uncertain Plant Pa-Stability of networked control systems with uncertain time-

Bekiaris-Liberis, Nikolaos

217

The APS control system network  

SciTech Connect

The APS accelerator control system is a distributed system consisting of operator interfaces, a network, and computer-controlled interfaces to hardware. This implementation of a control system has come to be called the {open_quotes}Standard Model.{close_quotes} The operator interface is a UNDC-based workstation with an X-windows graphical user interface. The workstation may be located at any point on the facility network and maintain full functionality. The function of the network is to provide a generalized communication path between the host computers, operator workstations, input/output crates, and other hardware that comprise the control system. The crate or input/output controller (IOC) provides direct control and input/output interfaces for each accelerator subsystem. The network is an integral part of all modem control systems and network performance will determine many characteristics of a control system. This paper will describe the overall APS network and examine the APS control system network in detail. Metrics are provided on the performance of the system under various conditions.

Sidorowicz, K.V.; McDowell, W.P.

1995-12-31T23:59:59.000Z

218

Modelling light curves of binary systems: accounting for extended winds  

E-Print Network (OSTI)

We suggest a simple synthesis model of an eclipsing binary system which includes one component with strong stellar wind. Numerical simulations show that the shape of the light curve (and in particularly the widths of the minima) strongly depends on wind parameters. Wind effects are crucial in modelling light curves of binaries including e.g., WR stars.

Antokhina, E A; Cherepashchuk, A M

2013-01-01T23:59:59.000Z

219

Controlled System Separation  

Science Conference Proceedings (OSTI)

Power systems are increasingly stressed by the rapid growth of electricity markets and renewable sources. As a result, the risks of a disturbance causing out-of-step generators or triggering cascading failures in a power system are also increasing. In extreme situations, successive line trips may break the power network into two or more islands in an undesired manner. For those areas without or lacking of generation capacities to support local electricity demands, much load has to be dropped, thus result...

2008-11-21T23:59:59.000Z

220

Illuminac: simultaneous naming and configuration for workspace lighting control  

Science Conference Proceedings (OSTI)

We explore natural and calm interfaces for configuring ubiquitous computing environments. A natural interface should enable the user to name a desired configuration and have the system enact that configuration. Users should be able to use familiar names ... Keywords: environment control, natural speech interfaces, non-negative matrix factorization

Ana Ramírez Chang; John Canny

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Considering lighting system performance and HVAC interactions in lighting retrofit analyses  

SciTech Connect

The performance of several typical fluorescent lighting retrofits are examined using analysis methods of varying sophistication. Estimates of energy and lighting performance based on the simple non-application specific data generally available tend to overestimate the energy savings obtained with the various retrofits by 10-30%. Adding a simple correction to account for cooling benefits exacerbates the error unless heating penalties are also considered. An analysis method that takes into account the thermal application factor of the lighting system shows that the error is typically due to systematically overestimating the energy usage of the original lighting system. If thermal application factor is considered, then detailed HVAC calculations do not significantly improve the energy-savings estimate.

Franconi, E.; Rubinstein, F.

1991-10-01T23:59:59.000Z

222

IC-BASED CONTROLS FOR ENERGY-EFFICIENT LIGHTING  

SciTech Connect

A new approach for driving high frequency energy saving ballasts is developed and documented in this report. The developed approach utilizes an IC-based platform that provides the benefits of reduced system cost, reduced ballast size, and universal application to a wide range of lamp technologies, such as linear fluorescent lamps (LFL), compact fluorescent lamps (CFL) and high intensity discharge lamps (HID). The control IC chip set developed for the platform includes dual low voltage (LV) IC gate drive that provides gate drive for high and low side power switches in typical ballast circuits, and ballast controller IC that provides control functionalities optimal for different lamps and digital interface for future extension to more sophisticated control and communication.

Richard Zhang

2005-03-01T23:59:59.000Z

223

Control Systems Security Publications Library | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electricity Advisory Committee Technology Development Transmission Planning Smart Grid Energy Delivery Systems Cybersecurity Control Systems Security News Archive Control...

224

Keeping the lights on [power system reliability  

Science Conference Proceedings (OSTI)

Of all the energy conversion processes in existence, the US electric power system is the largest and most complex. Unlike industries such as communications and transportation, where a demand in excess of supply produces a “busy signal” ...

J. D. Mountford; R. R. Austria

1999-06-01T23:59:59.000Z

225

Integrated control system and method  

DOE Patents (OSTI)

An integrated control system for use with an engine connected to a generator providing electrical power to a switchgear is disclosed. The engine receives gas produced by a gasifier. The control system includes an electronic controller associated with the gasifier, engine, generator, and switchgear. A gas flow sensor monitors a gas flow from the gasifier to the engine through an engine gas control valve and provides a gas flow signal to the electronic controller. A gas oversupply sensor monitors a gas oversupply from the gasifier and provides an oversupply signal indicative of gas not provided to the engine. A power output sensor monitors a power output of the switchgear and provide a power output signal. The electronic controller changes gas production of the gasifier and the power output rating of the switchgear based on the gas flow signal, the oversupply signal, and the power output signal.

Wang, Paul Sai Keat; Baldwin, Darryl; Kim, Myoungjin

2013-10-29T23:59:59.000Z

226

The effect of lighting system components on lighting quality, energy use, and life-cycle cost  

SciTech Connect

A computational method was developed to examine the effect of lamp, ballast, and fixture selection on the quality and quantity of illumination, energy consumption, and life-cycle cost of lighting systems. Applying this analysis to lighting layouts using different lamp/ballast/fixture combinations suggested that combinations with higher lumen outputs reduced the uniformity of the illuminance distribution at the workplace but did not reduce visibility levels. The use of higher lumen output lamp/ballast/fixture systems and higher efficiency components tended to reduce life-cycle costs as long as the premium cost of the components was not too high.

Rubinstein, F.; Clark, T.; Siminovitch, M.; Verderber, R.

1986-07-01T23:59:59.000Z

227

REACTOR SYSTEM AND CONTROL VALVE  

DOE Patents (OSTI)

Valves have been developed for controlling the flow of gaseous fluid through a passage or conduit. The valves have particular application in the cooling systems of gas; cooled reactors. (R.J.S.)

Fortescue, P.; Rickard, C.; Rose, D.

1963-01-01T23:59:59.000Z

228

Lighting  

Energy.gov (U.S. Department of Energy (DOE))

There are many different types of artificial lights, all of which have different applications and uses. Types of lighting include:

229

Pump control system for windmills  

DOE Patents (OSTI)

A windmill control system having lever means, for varying length of stroke of the pump piston, and a control means, responsive to the velocity of the wind to operate the lever means to vary the length of stroke and hence the effective displacement of the pump in accordance with available wind energy, with the control means having a sensing member separate from the windmill disposed in the wind and displaceable thereby in accordance with wind velocity.

Avery, Don E. (45-437 Akimala St., Honolulu, HI 96744)

1983-01-01T23:59:59.000Z

230

PIA - Weapons Data Control Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Weapons Data Control Systems PIA - Weapons Data Control Systems PIA - Weapons Data Control Systems PIA PIA - Weapons Data Control Systems...

231

Intrinsically resilient energy control systems  

Science Conference Proceedings (OSTI)

To preserve critical energy control functions while under attack, it is necessary to perform comprehensive analysis on the root cause and impact of an ongoing cyber intrusion without sacrificing the availability of energy delivery. In this position paper, ... Keywords: cybersecurity, data integration, energy control system, intrusion-tolerant scada, knowledge base, ontology, root cause analysis, semantic annotation, situational awareness

Frederick Sheldon; Daniel Fetzer; David Manz; Jingshan Huang; Stuart Goose; Thomas Morris; Jiangbo Dang; Jonathan Kirsch; Dong Wei

2013-01-01T23:59:59.000Z

232

Feedback control of spin systems  

E-Print Network (OSTI)

The feedback stabilization problem for ensembles of coupled spin 1/2 systems is discussed from a control theoretic perspective. The noninvasive nature of the bulk measurement allows for a fully unitary and deterministic closed loop. The Lyapunov-based feedback design presented does not require spins that are selectively addressable. With this method, it is possible to obtain control inputs also for difficult tasks, like suppressing undesired couplings in identical spin systems.

Claudio Altafini

2006-01-03T23:59:59.000Z

233

Position feedback control system  

DOE Patents (OSTI)

Disclosed is a system and method for independently evaluating the spatial positional performance of a machine having a movable member, comprising an articulated coordinate measuring machine comprising: a first revolute joint; a probe arm, having a proximal end rigidly attached to the first joint, and having a distal end with a probe tip attached thereto, wherein the probe tip is pivotally mounted to the movable machine member; a second revolute joint; a first support arm serially connecting the first joint to the second joint; and coordinate processing means, operatively connected to the first and second revolute joints, for calculating the spatial coordinates of the probe tip; means for kinematically constraining the articulated coordinate measuring machine to a working surface; and comparator means, in operative association with the coordinate processing means and with the movable machine, for comparing the true position of the movable machine member, as measured by the true position of the probe tip, with the desired position of the movable machine member.

Bieg, Lothar F. (Albuquerque, NM); Jokiel, Jr., Bernhard (Albuquerque, NM); Ensz, Mark T. (Albuquerque, NM); Watson, Robert D. (Tijeras, NM)

2003-01-01T23:59:59.000Z

234

Office worker response to an automated venetian blind and electric lighting system: A pilot study  

SciTech Connect

A prototype integrated, dynamic building envelope and lighting system designed to optimize daylight admission and solar heat gain rejection on a real-time basis in a commercial office building is evaluated. Office worker response to the system and occupant-based modifications to the control system are investigated to determine if the design and operation of the prototype system can be improved. Key findings from the study are: (1) the prototype integrated envelope and lighting system is ready for field testing, (2) most office workers (N=14) were satisfied with the system, and (3) there were few complaints. Additional studies are needed to explain how illuminance distribution, lighting quality, and room design can affect workplans illuminance preferences.

Vine, E.; Lee, E.; Clear, R.; DiBartolomeo, D.; Selkowitz, S.

1998-03-01T23:59:59.000Z

235

Diesel Exhaust Emissions Control for Light-Duty Vehicles  

SciTech Connect

The objective of this paper is to present the results of diesel exhaust aftertreatment testing and analysis done under the FreedomCAR program. Nitrogen Oxides (NOx) adsorber technology was selected based on a previous investigation of various NOx aftertreatment technologies including non-thermal plasma, NOx adsorber and active lean NOx. Particulate Matter (PM) emissions were addressed by developing a catalyzed particulate filter. After various iterations of the catalyst formulation, the aftertreatment components were integrated and optimized for a light duty vehicle application. This compact exhaust aftertreatment system is dual leg and consists of a sulfur trap, NOx adsorbers, and catalyzed particulate filters (CPF). During regeneration, supplementary ARCO ECD low-sulfur diesel fuel is injected upstream of the adsorber and CPF in the exhaust. Steady state and transient emission test results with and without the exhaust aftertreatment system (EAS) are presented. Results of soot filter regeneration by injecting low-sulfur diesel fuel and slip of unregulated emissions, such as NH3, are discussed. Effects of adsorber size and bypass strategy on NOx conversion efficiency and fuel economy penalty are also presented in this paper. The results indicate that if the supplementary fuel injection is optimized, NH3 slip is negligible. During the FTP cycle, injection of low sulfur diesel fuel can create temperature exotherms high enough to regenerate a loaded CPF. With the optimized NOx adsorber regeneration strategies the fuel injection penalty can be reduced by 40 to 50%. Results for various other issues like low temperature light off, reductant optimization, exhaust sulfur management, system integration and design trade-off, are also presented and discussed in this paper. (SAE Paper SAE-2003-01-0041 © 2003 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

Mital, R.; Li, J.; Huang, S. C.; Stroia, B. J.; Yu, R. C. (Cummins, Inc.); Anderson, J.A. (Argonne National Laboratory); Howden, Kenneth C. (U.S. Department of Energy)

2003-03-01T23:59:59.000Z

236

A comprehensive approach to integrated envelope and lighting systems for new commercial buildings  

SciTech Connect

The authors define a comprehensive approach to integrated envelope and lighting systems design as one that balances energy efficiency with an equal regard to the resultant environmental quality. By integrating envelope components (glazing, shading, and daylighting), lighting components (fixtures and controls) and building HVAC/energy management control systems, they create building systems that have the potential to achieve significant decreases in electricity consumption and peak demand while satisfying occupant physiological and psychological concerns. This paper presents results on the development, implementation, and demonstration of two specific integrated envelope and lighting systems: (1) a system emphasizing dynamic envelope components and responsive electric lighting systems, that offer the potential to achieve energy efficiency goals and a near optimum comfort environment throughout the year by adapting to meteorological conditions and occupant preferences in real time, and (2) perimeter daylighting systems that increase the depth of daylight penetration from sidelight windows and improves visual comfort with the use of a small inlet aperture. The energy performance of the systems was estimated using the DOE-2 building energy simulation program. Field tests with reduced scale models were conducted to determine daylighting and thermal performance in real time under actual weather conditions. Demonstrations of these integrated systems are being planned or are in progress in collaboration with utility programs to resolve real-world implementation issues under complex site, building, and cost constraints. Results indicate that integrated systems offer solutions that not only achieve significant peak demand reductions but also realize consistent energy savings with added occupant comfort and satisfaction.

Lee, E.S.; Selkowitz, S.E.; Rubinstein, F.M.; Klems, J.H.; Beltran, L.O.; DiBartolomeo, D.L. [Lawrence Berkeley Lab., CA (United States). Building Technologies Program

1994-05-01T23:59:59.000Z

237

PS2004 Light-harvesting Systems Workshop  

DOE Green Energy (OSTI)

This special issue of the international scientific research journal Photosynthesis Research consists of 25 original peer-reviewed contributions from participants in the PS 2004 Lisht-Harvesting Systems Workshop. This workshop was held from 26-29, 2004 at Hotel Le Chantecler, Sainte-Adele, Quebec, Canada. The workshop was a satellite meeting of the XIII International Congress on Photosynthesis held August 29-September 3, 2004 in Montreal, Canada. The workshope dealt with all types of photosynthetic antenna systems and types of organisms, including anoxygenic photosynthetic bacteria, cyanobacteria, algae and higher plants, as well as in vitro studies of isolated pigments. This collection of papers is a good representation of the highly interdisciplinary nature of modern research on photosynthetic antenna complexes, utilizing techniques of advanced spectroscopy, biochemistry, molecular biology, synthetic chemistry and structural determination to understand these diverse and elegant molecular complexes.

Robert E. Blankenship

2005-11-01T23:59:59.000Z

238

Solid-State Lighting: Model Specification for Adaptive Control and Remote  

NLE Websites -- All DOE Office Websites (Extended Search)

Market-Based Programs Printable Version Share this resource Send a link to Solid-State Lighting: Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires, V1.0 to someone by E-mail Share Solid-State Lighting: Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires, V1.0 on Facebook Tweet about Solid-State Lighting: Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires, V1.0 on Twitter Bookmark Solid-State Lighting: Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires, V1.0 on Google Bookmark Solid-State Lighting: Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires, V1.0 on Delicious Rank Solid-State Lighting: Model Specification for Adaptive Control

239

Research report of street lighting controls for the City of Portland, Oregon  

SciTech Connect

This report examines various types of lighting controls for roadways these needs. Three types of control were explored: (1) ''Solid State ''Photocontrols; (2) Photocontrols with Partial Night Turn-off features; and (3) Variable Lighting Controls.

Qualmann, W.

1985-01-25T23:59:59.000Z

240

CONTROL SYSTEM FOR NEUTRONIC REACTORS  

DOE Patents (OSTI)

BS>A slow-acting shim rod for control of major variations in reactor neutron flux and a fast-acting control rod to correct minor flux variations are employed to provide a sensitive, accurate control system. The fast-acting rod is responsive to an error signal which is produced by changes in the neutron flux from a predetermined optimum level. When the fast rod is thus actuated in a given direction, means is provided to actuate the slow-moving rod in that direction to return the fast rod to a position near the midpoint of its control range. (AEC)

Crever, F.E.

1962-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

The Advantages of Highly Controlled Lighting for Offices and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conference Location Pacific Grove, CA Keywords demand response and distributed energy resources center, demand response research center, lighting Abstract The paper presents...

242

An Efficient LED System-in-Module for General Lighting Applications  

SciTech Connect

The objective of the project was to realize an LED-based lighting technology platform for general illumination, starting with LED chips, and integrating the necessary technologies to make compact, user-friendly, high-efficiency, energy-saving sources of controlled white (or variable-colored) light. The project is to build the system around the LEDs, and not to work on the LEDs themselves, in order that working products can be introduced soon after the LEDs reach suitable efficiency for mass-production of high-power light sources for general illumination. Because the light sources are intended for general illumination, color must be accurately maintained, requiring feedback control in the electronics. The project objective has been realized and screw base demonstrators, based on the technology developed in the project, have been built.

2008-09-14T23:59:59.000Z

243

Standardizing Communication Between Lighting Control Devices: A Role for IEEE P1451  

NLE Websites -- All DOE Office Websites (Extended Search)

Controller Controller sensor actuator sensor sensor actuator actuator Building equipment Building equipment Building equipment Environmental Variables: Temperature Light Airflow Occupancy CO 2 É Fire É Figure 1. Shown is a generic diagram of the relationship between controller, actuators and sensors in a typical building control application. Sensors detect the key environmental parameters, while the controller "decides" which actuator is to be controlled and how. The actuators operate the building equipment, which, in turn affects the building environment. The physical connection between controller and actuator and controller and sensor usually takes place over wires carrying an analog signal. Standardizing Communication Between Lighting Control Devices A Role for IEEE P1451

244

Irrigation Districts: Establishment of Electric Light and Power Systems:  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Irrigation Districts: Establishment of Electric Light and Power Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Nebraska Program Type Siting and Permitting Provider Natural Resources Irrigation districts, created in section 46-1xx, are encouraged to

245

Control System of the Bepcii  

E-Print Network (OSTI)

Recently the Chinese Academy of Sciences has chosen BEPCII as the future development of the BEPC, i.e. upgrade of both the machine and detector. The luminosity of the machine is expected to increase to 1.0x1033cm-2s-1. The project will be started at the beginning of 2002 and finished with in 3-4 years. The BEPC control system was built in 1987 and upgraded in 1994. According to the design of the BEPCII, a double ring schema will be adopted and a number of new devices will be added in the system. The existing control system has to be upgraded. The BEPCII will be distributed architecture and developed by EPICS. We are going to apply the standard hardware interfaces and mature technologies in the system. A number of VME IOCs will be added in the system and the feildbus, PLCs will be used as device control for some kind of equipment. We will keep the existing system in use, such as CAMAC modules and PC front-ends, and merge it into EPICS system. Recently the development of the prototype is in progress. This paper will describe the system design and development issues.

J. Zhao; C. H. Wang; X. C. Kong; G. Lei; S. F. Xu; Q. Le

2001-11-21T23:59:59.000Z

246

Reactor control rod timing system  

DOE Patents (OSTI)

A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

Wu, Peter T. K. (Clifton Park, NY)

1982-01-01T23:59:59.000Z

247

Proton beam therapy control system  

DOE Patents (OSTI)

A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

Baumann, Michael A. (Riverside, CA); Beloussov, Alexandre V. (Bernardino, CA); Bakir, Julide (Alta Loma, CA); Armon, Deganit (Redlands, CA); Olsen, Howard B. (Colton, CA); Salem, Dana (Riverside, CA)

2008-07-08T23:59:59.000Z

248

Proton beam therapy control system  

DOE Patents (OSTI)

A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

Baumann, Michael A. (Riverside, CA); Beloussov, Alexandre V. (San Bernardino, CA); Bakir, Julide (Alta Loma, CA); Armon, Deganit (Longmeadow, MA); Olsen, Howard B. (Irvine, CA); Salem, Dana (Riverside, CA)

2010-09-21T23:59:59.000Z

249

Proton beam therapy control system  

SciTech Connect

A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

Baumann, Michael A; Beloussov, Alexandre V; Bakir, Julide; Armon, Deganit; Olsen, Howard B; Salem, Dana

2013-06-25T23:59:59.000Z

250

Proton beam therapy control system  

SciTech Connect

A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

Baumann, Michael A; Beloussov, Alexandre V; Bakir, Julide; Armon, Deganit; Olsen, Howard B; Salem, Dana

2013-12-03T23:59:59.000Z

251

Reducing Barriers To The Use of High-Efficiency Lighting Systems  

Science Conference Proceedings (OSTI)

With funding from the U.S. Department of Energy (DOE), the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute completed the four-year research project, Reducing Barriers to the Use of High-Efficiency Lighting Systems. The initial objectives were: (1) identifying barriers to widespread penetration of lighting controls in commercial/industrial (C/I) applications that employ fluorescent lamp technologies, and (2) making recommendations to overcome these barriers. The addition of a fourth year expanded the original project objectives to include an examination of the impact on fluorescent lamps from dimming utilizing different lamp electrode heating and dimming ratios. The scope of the project was narrowed to identify barriers to the penetration of lighting controls into commercial-industrial (C/I) applications that employ fluorescent lamp technologies, and to recommend means for overcoming these barriers. Working with lighting manufacturers, specifiers, and installers, the project identified technological and marketing barriers to the widespread use of lighting controls, specifically automatic-off controls, occupancy sensors, photosensors, dimming systems, communication protocols and load-shedding ballasts. The primary barriers identified include cost effectiveness of lighting controls to the building owner, lack of standard communication protocols to allow different part of the control system to communicate effectively, and installation and commissioning issues. Overcoming the identified barriers requires lighting control products on the market to achieve three main goals: (1) Achieve sufficient functionality to meet the key requirements of their main market. (2) Allow significant cost reduction compared to current market standard systems. Cost should consider: hardware capital cost including wiring, design time required by the specifier and the control system manufacturer, installation time required by the electrician, and commissioning time and remedial time required by the electrician and end user. (3) Minimize ongoing perceived overhead costs and inconvenience to the end user, or in other words, systems should be simple to understand and use. In addition, we believe that no lighting controls solution is effective or acceptable unless it contributes to, or does not compromise, the following goals: (1) Productivity--Planning, installation, commissioning, maintenance, and use of controls should not decrease business productivity; (2) Energy savings--Lighting controls should save significant amounts of energy and money in relation to the expense involved in using them (acceptable payback period); and/or (3) Reduced power demand--Society as a whole should benefit from the lowered demand for expensive power and for more natural resources. Discussions of technology barriers and developments are insufficient by themselves to achieve higher penetration of lighting controls in the market place. Technology transfer efforts must play a key role in gaining market acceptance. The LRC developed a technology transfer model to better understand what actions are required and by whom to move any technology toward full market acceptance.

Peter Morante

2005-12-31T23:59:59.000Z

252

Tetraquark bound states in the heavy-light heavy-light system  

Science Conference Proceedings (OSTI)

A calculation of the interaction potential of a heavy-light heavy-light (HLHL) system in lattice QCD is used to study the existence of tetraquark bound states. The interaction potential of the tetraquark system is calculated on the lattice with 2+1 flavours of dynamical fermions with lattice interpolating fields constructed using colorwave propagators. These propagators provide a new method for constructing all-to-all spatially smeared the interpolating fields, a technique which allows for a better overlap with the ground state wavefunction as well as reduced statistical noise. Lattice HLHL potentials are extracted for 24 distinct channels, and are fit with a phenomenological non-relativistic quark model potential, from which a determination of the existence of bound states is made via numerical solution of the two body radial Schroedinger equation.

Konstantinos Orginos, Zachary Brown

2012-12-01T23:59:59.000Z

253

Vulnerability Analysis of Energy Delivery Control Systems  

Energy.gov (U.S. Department of Energy (DOE))

The Vulnerability Analysis of Energy Delivery Control Systems report, prepared by Idaho National Laboratory, describes the common vulnerabilities on energy sector control systems, and provides...

254

Development and Research of HVDC Light System Based on DSP  

Science Conference Proceedings (OSTI)

After entering the 1990s, a new metal oxide semiconductor device-- insulated gate bipolar transistor (IGBT) was first widely used in the industrial driving device. The voltage source converter using IGBT has the ability to turn off current and it can ... Keywords: HVDC light system, IGBT, pulse width modulation

Yanping Gao; Xianqiang Lv; Xianjiu Guo

2009-01-01T23:59:59.000Z

255

Microscopic Calculation of Fusion: Light to Heavy Systems  

E-Print Network (OSTI)

The density-constrained time-dependent Hartree-Fock (DC-TDHF) theory is a fully microscopic approach for calculating heavy-ion interaction potentials and fusion cross sections below and above the fusion barrier. We discuss recent applications of DC-TDHF method to fusion of light and heavy neutron-rich systems.

A. S. Umar; V. E. Oberacker; J. A. Maruhn; R. Keser

2013-10-02T23:59:59.000Z

256

Advanced Instrumentation, Information, and Control Systems Technologies Technical Program Plan  

SciTech Connect

Reliable instrumentation, information, and control (II&C) systems technologies are essential to ensuring safe and efficient operation of the U.S. light water reactor (LWR) fleet. These technologies affect every aspect of nuclear power plant (NPP) and balance-of-plant operations. In 1997, the National Research Council conducted a study concerning the challenges involved in modernization of digital instrumentation and control systems in NPPs. Their findings identified the need for new II&C technology integration.

Bruce Hallbert

2012-09-01T23:59:59.000Z

257

Cyber Incidents Involving Control Systems  

Science Conference Proceedings (OSTI)

The Analysis Function of the US-CERT Control Systems Security Center (CSSC) at the Idaho National Laboratory (INL) has prepared this report to document cyber security incidents for use by the CSSC. The description and analysis of incidents reported herein support three CSSC tasks: establishing a business case; increasing security awareness and private and corporate participation related to enhanced cyber security of control systems; and providing informational material to support model development and prioritize activities for CSSC. The stated mission of CSSC is to reduce vulnerability of critical infrastructure to cyber attack on control systems. As stated in the Incident Management Tool Requirements (August 2005) ''Vulnerability reduction is promoted by risk analysis that tracks actual risk, emphasizes high risk, determines risk reduction as a function of countermeasures, tracks increase of risk due to external influence, and measures success of the vulnerability reduction program''. Process control and Supervisory Control and Data Acquisition (SCADA) systems, with their reliance on proprietary networks and hardware, have long been considered immune to the network attacks that have wreaked so much havoc on corporate information systems. New research indicates this confidence is misplaced--the move to open standards such as Ethernet, Transmission Control Protocol/Internet Protocol, and Web technologies is allowing hackers to take advantage of the control industry's unawareness. Much of the available information about cyber incidents represents a characterization as opposed to an analysis of events. The lack of good analyses reflects an overall weakness in reporting requirements as well as the fact that to date there have been very few serious cyber attacks on control systems. Most companies prefer not to share cyber attack incident data because of potential financial repercussions. Uniform reporting requirements will do much to make this information available to Department of Homeland Security (DHS) and others who require it. This report summarizes the rise in frequency of cyber attacks, describes the perpetrators, and identifies the means of attack. This type of analysis, when used in conjunction with vulnerability analyses, can be used to support a proactive approach to prevent cyber attacks. CSSC will use this document to evolve a standardized approach to incident reporting and analysis. This document will be updated as needed to record additional event analyses and insights regarding incident reporting. This report represents 120 cyber security incidents documented in a number of sources, including: the British Columbia Institute of Technology (BCIT) Industrial Security Incident Database, the 2003 CSI/FBI Computer Crime and Security Survey, the KEMA, Inc., Database, Lawrence Livermore National Laboratory, the Energy Incident Database, the INL Cyber Incident Database, and other open-source data. The National Memorial Institute for the Prevention of Terrorism (MIPT) database was also interrogated but, interestingly, failed to yield any cyber attack incidents. The results of this evaluation indicate that historical evidence provides insight into control system related incidents or failures; however, that the limited available information provides little support to future risk estimates. The documented case history shows that activity has increased significantly since 1988. The majority of incidents come from the Internet by way of opportunistic viruses, Trojans, and worms, but a surprisingly large number are directed acts of sabotage. A substantial number of confirmed, unconfirmed, and potential events that directly or potentially impact control systems worldwide are also identified. Twelve selected cyber incidents are presented at the end of this report as examples of the documented case studies (see Appendix B).

Robert J. Turk

2005-10-01T23:59:59.000Z

258

New OLED Lighting Systems Shine Bright, Save Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Universal Display Corporation Universal Display Corporation (UDC) (Ewing, NJ), founded in 1994, provides OLED innovations and helps commercialize new generations of OLED products through technology licensing, UniversalPHOLED® materials sales, technology development, and technology transfer services. UDC is a world leader in the development of innovative OLED technology for use in flat panel displays, lighting, and organic electronics. It holds one of the largest patent portfolios in the OLED field. www.universaldisplay.com New OLED Lighting Systems Shine Bright, Save Energy Challenge Lighting consumes over 22% of the total electricity produced in the U.S. and, according to industry estimates, accounts for over $200 billion per year in electric bills worldwide. A majority of this energy consumption

259

Computer controlled air conditioning systems  

SciTech Connect

This patent describes an improvement in a computer controlled air conditioning system providing for circulation of air through an air conditioned house in contact with concrete walls requiring a humidity within a critical range. The improvement consists of: a computer for processing sensed environmental input data including humidity and oxygen to produce output control signals for affecting the humidity of the air in the house; provision for an air flow circulation path through the house in contact with the concrete walls; sensing responsive to the amount of oxygen in the house for providing input signals to the computer; mixing for combining with the air in the house a variable amount of fresh atmospheric air to supply fresh oxygen; and humidity modifying means for modifying the humidity of the air flowing in the flow path responsive to the control signals.

Dumbeck, R.F.

1986-02-04T23:59:59.000Z

260

Heat engine generator control system  

SciTech Connect

An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power.

Rajashekara, Kaushik (Carmel, IN); Gorti, Bhanuprasad Venkata (Towson, MD); McMullen, Steven Robert (Anderson, IN); Raibert, Robert Joseph (Fishers, IN)

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Heat engine generator control system  

DOE Patents (OSTI)

An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power. 8 figs.

Rajashekara, K.; Gorti, B.V.; McMullen, S.R.; Raibert, R.J.

1998-05-12T23:59:59.000Z

262

Autonomous grain combine control system  

DOE Patents (OSTI)

A system for controlling a grain combine having a rotor/cylinder, a sieve, a fan, a concave, a feeder, a header, an engine, and a control system. The feeder of the grain combine is engaged and the header is lowered. A separator loss target, engine load target, and a sieve loss target are selected. Grain is harvested with the lowered header passing the grain through the engaged feeder. Separator loss, sieve loss, engine load and ground speed of the grain combine are continuously monitored during the harvesting. If the monitored separator loss exceeds the selected separator loss target, the speed of the rotor/cylinder, the concave setting, the engine load target, or a combination thereof is adjusted. If the monitored sieve loss exceeds the selected sieve loss target, the speed of the fan, the size of the sieve openings, or the engine load target is adjusted.

Hoskinson, Reed L.; Kenney, Kevin L.; Lucas, James R.; Prickel, Marvin A.

2013-06-25T23:59:59.000Z

263

Control circuit for combustion systems  

SciTech Connect

A control circuit is described for gas fired burners and the like such as are employed in commercial laundry fabric ironers requiring the energization of a blower motor and the resulting opening of a gas valve and ignition of a gas burner only after an air pressure sensitive switch is actuated through the operation of the blower motor for purging the system of combustible gases.

Kamberg, E.

1981-11-10T23:59:59.000Z

264

Multiple sensors with single HVAC system control  

E-Print Network (OSTI)

sensor; HVAC; control system; optimization; multi channeloptimization method is designed to be independent of the HVAC

Lin, Craig; Federspiel, Clifford; Auslander, David

2002-01-01T23:59:59.000Z

265

Intelligent street lighting application for electric power distribution systems the business case for smartgrid technology.  

E-Print Network (OSTI)

??This research project builds upon previous work related to intelligent and energy efficient lighting in modern street and outdoor lighting systems. The concept of implementing… (more)

Davis, Wesley O'Brian Sr.

2011-01-01T23:59:59.000Z

266

Direction control of bilinear systems. I  

E-Print Network (OSTI)

We consider the general bilinear control systems in three-dimensional Euclidean space which satisfy the LARC and have an open control set U; and give sufficient controllability conditions for corresponding projected systems on two-dimensional sphere.

Choque, Abdon

2010-01-01T23:59:59.000Z

267

Peak Power Reduction Strategies for the Lighting Systems in Government Buildings  

E-Print Network (OSTI)

Lighting systems are the second major contributor to the peak power demand and energy consumption in buildings after A/C systems. They account for nearly 20% of the peak power demand and 15% of the annual energy consumption. Thus energy efficient lighting systems and their smart operation can be very effective in reducing the national peak power and energy consumption, particularly for a country like Kuwait where power demand grew from 6750 MW in 2001 to 9075 MW in 2007 (MEW, 2002- 2008). This paper presents an approach developed to reduce the peak power demand in the lighting. The approach included optimum use of daylight, time of day control and delamping. The implementation of this approach for eight government buildings with occupancy of between 7:30 and 2:30 and peak power demand of 29.3 MW achieved a reduction of 2 MW in the peak power demand (around 7%). More importantly this 7% in peak load reduction and 10,628 MWh reduction in the annual energy consumption was achieved without any added cost. Also, the paper includes recommendations for retrofitting cost effective energy efficient lighting systems and implementation of more effective control.

Al-Nakib, D.; Al-Mulla, A. A.; Maheshwari, G. P.

2010-01-01T23:59:59.000Z

268

On-line process control monitoring system  

DOE Patents (OSTI)

An on-line, fiber-optic based apparatus for monitoring the concentration of a chemical substance at a plurality of locations in a chemical processing system comprises a plurality of probes, each of which is at a different location in the system, a light source, optic fibers for carrying light to and from the probes, a multiplexer for switching light from the source from one probe to the next in series, a diode array spectrophotometer for producing a spectrum from the light received from the probes, and a computer programmed to analyze the spectra so produced. The probes allow the light to pass through the chemical substance so that a portion of the light is absorbed before being returned to the multiplexer. A standard and a reference cell are included for data validation and error checking.

O' Rourke, Patrick E. (Martinez, GA); Van Hare, David R. (Aiken, SC); Prather, William S. (Augusta, GA)

1992-01-01T23:59:59.000Z

269

Control system for cogenerative power plants  

Science Conference Proceedings (OSTI)

The paper presents a distributed control system for the realization of cogenerative supply of electricity and heat and, in given case, for their combination with waste heat recovery, particularly in combined (gas-steam) cycle industrial power plants. ... Keywords: cogenerative gas power plant, control of distributed parameter systems, distribution management system, electric power systems, optimization, process control, real time systems, simulation

Florin Hartescu

2008-08-01T23:59:59.000Z

270

Last printed 3/16/2004 3:01 PM High-Frequency (Light) Borehole-Radar System  

E-Print Network (OSTI)

Last printed 3/16/2004 3:01 PM High-Frequency (Light) Borehole-Radar System Ramac from Mala Geoscience Packing List 1) Radar control unit (Ramac surface GPR system) (Old or New CU2 is O.K.). 2) Laptop computer with acquisition software, manuals, logbook and protocol sheets. 3) Backup system; zip, jaz, or CD

Barrash, Warren

271

Centrally powered lighting systems: Renewed efforts for commercialization  

SciTech Connect

A new approach to powering fluorescent lamps, likely to be marketed aggressively in 1994, appears to be very efficient and reliable, and provides several other advantages over conventional ballast designs. It involves using a central rectifier to convert AC to DC to power lighting for an entire facility, rather than using rectifiers in each ballast as with typical fluorescent lighting systems. Although not practical for most retrofit applications, the centralized power approach is promising for new construction and major renovation, and users in several new installations are pleased with its operation. Brigham Young University (BYU), in cooperation with a newly licensed commercial partner, has renewed marketing efforts for this unique system, which has not succeeded commercially in prior licensing arrangements.

Howe, B.

1994-12-31T23:59:59.000Z

272

Advanced Demand Responsive Lighting  

NLE Websites -- All DOE Office Websites (Extended Search)

Demand Demand Responsive Lighting Host: Francis Rubinstein Demand Response Research Center Technical Advisory Group Meeting August 31, 2007 10:30 AM - Noon Meeting Agenda * Introductions (10 minutes) * Main Presentation (~ 1 hour) * Questions, comments from panel (15 minutes) Project History * Lighting Scoping Study (completed January 2007) - Identified potential for energy and demand savings using demand responsive lighting systems - Importance of dimming - New wireless controls technologies * Advanced Demand Responsive Lighting (commenced March 2007) Objectives * Provide up-to-date information on the reliability, predictability of dimmable lighting as a demand resource under realistic operating load conditions * Identify potential negative impacts of DR lighting on lighting quality Potential of Demand Responsive Lighting Control

273

2011 Quantum Control of Light & Matter Gordon Research Conference (July 31-August 5, 2011, Mount Holyoke College, South Hadley, MA)  

SciTech Connect

Quantum control of light and matter is the quest to steer a physical process to a desirable outcome, employing constructive and destructive interference. Three basic questions address feasibility of quantum control: (1) The problem of controllability, does a control field exist for a preset initial and target state; (2) Synthesis, constructively finding the field that leads to the target; and (3) Optimal Control Theory - optimizing the field that carries out this task. These continue to be the fundamental theoretical questions to be addressed in the conference. How to realize control fields in the laboratory is an ongoing challenge. This task is very diverse viewing the emergence of control scenarios ranging from attoseconds to microseconds. How do the experimental observations reflect on the theoretical framework? The typical arena of quantum control is an open environment where much of the control is indirect. How are control scenarios realized in dissipative open systems? Can new control opportunities emerge? Can one null decoherence effects? An ideal setting for control is ultracold matter. The initial and final state can be defined more precisely. Coherent control unifies many fields of physical science. A lesson learned in one field can reflect on another. Currently quantum information processing has emerged as a primary target of control where the key issue is controlling quantum gate operation. Modern nonlinear spectroscopy has emerged as another primary field. The challenge is to unravel the dynamics of molecular systems undergoing strong interactions with the environment. Quantum optics where non-classical fields are to be generated and employed. Finally, coherent control is the basis for quantum engineering. These issues will be under the limelight of the Gordon conference on Quantum Control of Light and Matter.

Thomas Weinacht

2011-08-05T23:59:59.000Z

274

New Energy-Saving Fiber Optic Lighting System Lights Up Public Spaces  

Energy.gov (U.S. Department of Energy (DOE))

Case study covering Energy Focus, Inc. and its lighting technology that delivers light comparable to conventional lamps while using significantly less energy per lumen.

275

Engine idle speed control system  

SciTech Connect

An idle speed control system is described for an internal combustion engine having a fuel delivery means for supplying fuel to the engine, the idle speed control system comprising in combination: means for controlling the fuel delivery means to supply a scheduled idle fuel quantity during a idle operating state of the engine; means for sensing the engine idle speed; integrator means responsive to the engine idle speed and a desired engine idle speed for adjusting the scheduled idle fuel quantity in direction and amount to cause correspondence between the engine idle speed and the desired engine idle speed, the integrator means adjustment being a measure of engine load conditions; and means for establishing the scheduled idle fuel quantity, the means including (A) means for establishing a family of curves as a function of the amount of integrator adjustment of the scheduled idle fuel quantity, each curve of the family of curves representing idle fuel quantity as a function of engine idle speed for a respective engine load condition, and (B) means for selecting the curve corresponding to the integrator adjustment of the scheduled idle fuel quantity and providing the scheduled fuel quantity from the selected curve in accord with the sensed engine idle speed.

Ament, F.

1986-07-01T23:59:59.000Z

276

Controlled storage of light in silicon cavities Ali W. Elshaari*, Abdelsalam Aboketaf, and Stefan F. Preble  

E-Print Network (OSTI)

. Khan, S. Fan, P. R. Villeneuve, H. A. Haus, and J. D. Joannopoulos, "Coupling of modes analysis demonstration of quantum memory for light," Nature 432(7016), 482­486 (2004). 2. A. Politi, M. J. Cryan, J. G­649 (2008). 3. V. R. Almeida, C. A. Barrios, R. R. Panepucci, and M. Lipson, "All-optical control of light

Zanibbi, Richard

277

Instrumentation, Control, and Intelligent Systems  

DOE Green Energy (OSTI)

Abundant and affordable energy is required for U.S. economic stability and national security. Advanced nuclear power plants offer the best near-term potential to generate abundant, affordable, and sustainable electricity and hydrogen without appreciable generation of greenhouse gases. To that end, Idaho National Laboratory (INL) has been charged with leading the revitalization of nuclear power in the U.S. The INL vision is to become the preeminent nuclear energy laboratory with synergistic, world-class, multi-program capabilities and partnerships by 2015. The vision focuses on four essential destinations: (1) Be the preeminent internationally-recognized nuclear energy research, development, and demonstration laboratory; (2) Be a major center for national security technology development and demonstration; (3) Be a multi-program national laboratory with world-class capabilities; (4) Foster academic, industry, government, and international collaborations to produce the needed investment, programs, and expertise. Crucial to that effort is the inclusion of research in advanced instrumentation, control, and intelligent systems (ICIS) for use in current and advanced power and energy security systems to enable increased performance, reliability, security, and safety. For nuclear energy plants, ICIS will extend the lifetime of power plant systems, increase performance and power output, and ensure reliable operation within the system's safety margin; for national security applications, ICIS will enable increased protection of our nation's critical infrastructure. In general, ICIS will cost-effectively increase performance for all energy security systems.

Not Available

2005-09-01T23:59:59.000Z

278

Integrated envelope and lighting systems for commercial buildings: a retrospective  

SciTech Connect

Daylighting systems in use world-wide rarely capture the energy-savings predicted by simulation tools and that we believe are achievable in real buildings. One of the primary reasons for this is that window and lighting systems are not designed and operated as an integrated system. Our efforts over the last five years have been targeted toward (1) development and testing of new prototype systems that involve a higher degree of systems integration than has been typical in the past, and (2) addressing current design and technological barriers that are often missed with component-oriented research. We summarize the results from this body of cross-disciplinary research and discuss its effects on the existing and future practice of daylighting in commercial buildings.

Lee, Eleanor S.; Selkowitz, Stephen E.

1998-06-01T23:59:59.000Z

279

Rf power systems for the national synchrotron light source  

SciTech Connect

The booster synchrotron and the two storage rings at the NSLS are provided with rf power systems of 3 kW, 50 kW, and 500 kW nominal output power, all at 53 MHz. This power is supplied by grounded grid tetrode amplifiers designed for television broadcast service. These amplifiers and associated power supplies, control and interlock systems, rf controls, and computer interface are described.

Dickinson, T.; Rheaume, R.H.

1981-01-01T23:59:59.000Z

280

A multivariable predictive fuzzy PID control system  

Science Conference Proceedings (OSTI)

In this paper, a novel multivariable predictive fuzzy-proportional-integral-derivative (F-PID) control system is developed by incorporating the fuzzy and PID control approaches into the predictive control framework. The developed control system has two ... Keywords: BPTT, Control, Fuzzy, LM, Multivariable, PID, Predictive

Aydogan Savran

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Communications and sensing of illumination contributions in a power led lighting system  

E-Print Network (OSTI)

Abstract — In recent years, LED technology emerged as a prime candidate for the future illumination light source, due to high energy efficiency and long life time. In addition, LEDs offer a superior flexibility in terms of colors and shapes, which leads to a potentially infinite variety of available light patterns. In order to create these patterns via easy user interaction, we need to sense the local light contribution of each LED. This measurement could be enabled through tagging of the light of each LED with unique embedded IDs. To this end, we propose a new modulation and multiple access scheme, named as codetime division multiple access- pulse position modulation (CTDMA-PPM): a form of PPM which is keyed according to a spreading sequence, and in which the duty cycle is subject to pulse width modulation (PWM) according to the required lighting setting. Our scheme considers illumination constraints in addition to the communication requirements and, to our best knowledge, it has not been addressed by other optical modulation methods. Based on the proposed modulation method and multiple access schemes, we develop a system structure, which includes illumination sources, a sensor receiver and a control system. Illumination sources illuminate the environment and transmit information, simultaneously. According to our theoretical analysis, this system structure could support a number of luminaries equal to the size of the CDMA codebook times the dimming range. I.

Jean-paul M. G. Linnartz; Lorenzo Feri; Hongming Yang; Sel B. Colak; Tim C. W. Schenk

2008-01-01T23:59:59.000Z

282

iCheat: a representation for artistic control of indirect cinematic lighting  

Science Conference Proceedings (OSTI)

Thanks to an increase in rendering efficiency, indirect illumination has recently begun to be integrated in cinematic lighting design, an application where physical accuracy is less important than careful control of scene appearance. This paper presents ...

Juraj Obert; Jaroslav K?ivánek; Fabio Pellacini; Daniel Sykora; Sumanta Pattanaik

2008-06-01T23:59:59.000Z

283

ETTP Security Access Control System (ESACS) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

ETTP Security Access Control System (ESACS) ETTP Security Access Control System (ESACS) ETTP Security Access Control System (ESACS) ETTP Security Access Control System (ESACS) More...

284

Distributionally robust control of constrained stochastic systems  

E-Print Network (OSTI)

May 1, 2013 ... Distributionally robust control of constrained stochastic systems. Bart P.G. Van Parys (bartvan ***at*** control.ee.ethz.ch) Daniel Kuhn (d.kuhn ...

285

Light Emitting Diode (LED) fiducial system: Setup and operation  

SciTech Connect

Streak cameras, either electronic or rotating mirror, are common diagnostic tools used to explore very fast phenomena. Often they are used to precisely time events or durations, and in most cases, it is important to have quality time marks on the film record. Many methods have been used to introduce time marks onto the film. Exploding bridge wires are frequently used, but they light up slowly and are difficult to read with consistent accuracy. It is also difficult to put more than a few bridge wires in the view of a camera slit, so there are only a few timing marks written to the film. In some cases the time scale on the film must be interpolated over long distances, creating a significant loss of accuracy. Interpolation is especially troublesome with those cameras that have a nonlinear sweep rate. Spark gaps located on the camera slit turn on a bit faster, but suffer from the same interpolation induced errors. A series of short duration laser pulses, accurately timed and introduced along the edges of the film, is a very fine solution. The problem with such a laser fiducial system is that the lasers are very expensive and difficult to maintain. There has been a need for many years for an inexpensive, very bright light source that can be repetitively pulsed accurately and with short duration. Various technologies have sufficiently developed over the past few years, allowing us to build a fiducial system based on light emitting diodes (LED) for the Cordin rotating mirror streak cameras.

Muelder, S.A.

1995-01-01T23:59:59.000Z

286

Sliding mode control of quantum systems  

E-Print Network (OSTI)

This paper proposes a new robust control method for quantum systems with uncertainties involving sliding mode control (SMC). Sliding mode control is a widely used approach in classical control theory and industrial applications. We show that SMC is also a useful method for robust control of quantum systems. In this paper, we define two specific classes of sliding modes (i.e., eigenstates and state subspaces) and propose two novel methods combining unitary control and periodic projective measurements for the design of quantum sliding mode control systems. Two examples including a two-level system and a three-level system are presented to demonstrate the proposed SMC method. One of main features of the proposed method is that the designed control laws can guarantee desired control performance in the presence of uncertainties in the system Hamiltonian. This sliding mode control approach provides a useful control theoretic tool for robust quantum information processing with uncertainties.

Daoyi Dong; Ian R. Petersen

2009-10-31T23:59:59.000Z

287

Propagation of light in serially coupled plasmonic nanowire dimer: Geometry dependence and polarization control  

SciTech Connect

We experimentally studied plasmon-polariton-assisted light propagation in serially coupled silver nanowire (Ag-NW) dimers and probed their dependence on bending-angle between the nanowires and polarization of incident light. From the angle-dependence study, we observed that obtuse angles between the nanowires resulted in better transmission than acute angles. From the polarization studies, we inferred that light emission from junction and distal ends of Ag-NW dimers can be systematically controlled. Further, we applied this property to show light routing and polarization beam splitting in obtuse-angled Ag-NW dimer. The studied geometry can be an excellent test-bed for plasmonic circuitry.

Singh, Danveer; Raghuwanshi, Mohit; Pavan Kumar, G. V. [Photonics and Optical Nanoscopy Laboratory, Department of Physics and Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411008 (India)

2012-09-10T23:59:59.000Z

288

Control rod drive hydraulic system  

DOE Patents (OSTI)

A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

Ose, Richard A. (San Jose, CA)

1992-01-01T23:59:59.000Z

289

Conceptual design of a pressure tube light water reactor with variable moderator control  

SciTech Connect

This paper presents the development of innovative pressure tube light water reactor with variable moderator control. The core layout is derived from a CANDU line of reactors in general, and advanced ACR-1000 design in particular. It should be stressed however, that while some of the ACR-1000 mechanical design features are adopted, the core design basics of the reactor proposed here are completely different. First, the inter fuel channels spacing, surrounded by the calandria tank, contains a low pressure gas instead of heavy water moderator. Second, the fuel channel design features an additional/external tube (designated as moderator tube) connected to a separate moderator management system. The moderator management system is design to vary the moderator tube content from 'dry' (gas) to 'flooded' (light water filled). The dynamic variation of the moderator is a unique and very important feature of the proposed design. The moderator variation allows an implementation of the 'breed and burn' mode of operation. The 'breed and burn' mode of operation is implemented by keeping the moderator tube empty ('dry' filled with gas) during the breed part of the fuel depletion and subsequently introducing the moderator by 'flooding' the moderator tube for the 'burn' part. This paper assesses the conceptual feasibility of the proposed concept from a neutronics point of view. (authors)

Rachamin, R.; Fridman, E. [Reactor Safety Div., Inst. of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, POB 51 01 19, 01314 Dresden (Germany); Galperin, A. [Dept. of Nuclear Engineering, Ben-Gurion Univ. of the Negev, POB 653, Beer Sheva 84105 (Israel)

2012-07-01T23:59:59.000Z

290

Evaluation of Alternative Field Buses for Lighting Control Applications  

E-Print Network (OSTI)

meter reading), home automation, alarm and security systems,home appliances, wireless headsets for mobile phones, domestic and industrial environmental monitoring as in wireless security

Koch, Ed; Rubinstein, Francis

2005-01-01T23:59:59.000Z

291

Analysis and Control of Light Hydrocarbon Gases in the Pyrolysis ...  

Science Conference Proceedings (OSTI)

Designing a Collaborative System for Socio-Environmental Management of ... Oils Post-Consumption Residential and Commercial Clay with Two Brazilian.

292

Hybrid lighting: Illuminating our future  

SciTech Connect

Hybrid lighting is a combination of natural and artificial illumination to be used indoors for all lighting needs. Ideally, hybrid lighting is effectively indistinguishable from standard artificial lighting except in quality and cost, where it will likely be an improvement. Hybrid lighting systems are produced by a combination of four technologies: collecting natural light, generating artificial light, transporting and distributing light to where it is needed, and controlling the amounts of both natural and artificial light continuously during usage. Lighting demands a large fraction of our energy needs. If we can control or decrease this demand, we are able to accommodate societal growth without energy demand growth.

Cates, M.R.

1996-12-31T23:59:59.000Z

293

Dayton Power and Light - Business and Government Energy Efficiency...  

Open Energy Info (EERE)

conditioners, Chillers, Clothes Washers, Compressed air, CustomOthers pending approval, Energy Mgmt. SystemsBuilding Controls, Heat pumps, Lighting, Lighting ControlsSensors,...

294

Cape Light Compact - Commercial, Industrial and Municipal Buildings...  

Open Energy Info (EERE)

Central Air conditioners, Chillers, Compressed air, CustomOthers pending approval, Energy Mgmt. SystemsBuilding Controls, Furnaces, Heat pumps, Lighting, Lighting Controls...

295

The quantum systems control and the optimal control theory  

E-Print Network (OSTI)

Mathematical theory of the quantum systems control is based on some ideas of the optimal control theory. These ideas are developed here as applied to these systems. The results obtained meet the deficiencies in the basis and algorithms of the control synthesis and expand the application of these methods.

V. F. Krotov

2008-04-21T23:59:59.000Z

296

Controlled angular redirection of light via nanoimprinted disordered gratings  

E-Print Network (OSTI)

, the daylighting effect vanishes as the system becomes equivalent to an omnidirectional diffuser and transparency (Van Nostrand Reinhold, 1986). 19. M. Kischkoweit-Lopin, "An overview of daylighting systems," Sol gratings are presented in the context of improved interior daylighting and may furthermore be suited

297

Argonne CNM News: Shedding Light on Nature's Nanoscale Control of Solar  

NLE Websites -- All DOE Office Websites (Extended Search)

Shedding Light on Nature's Nanoscale Control of Solar Energy Shedding Light on Nature's Nanoscale Control of Solar Energy Scanning tunneling microscopy tips A schematic of the Rhodobacter sphaerodes hexameric core, featuring the "special pair" (P) of degenerate bacteriochlorophyll (BChl) molecules, and the active (a) and inactive (b) arms of BChl and bacteriopheophytin (BPh) molecules. The transient absorption (ΔA) spectra acquired following selective excitation of P are shown. Nature's process for storing solar energy occurs in light-absorbing protein complexes called photosynthetic reaction centers (RCs). Across billions of years of evolution, Nature has retained a common light-absorbing hexameric cofactor core for carrying out the very first chemical reaction of photosynthesis, the light-induced electron transfer across approximately 3

298

Performance of electronic ballasts and lighting controllers with 34-W fluorescent lamps: Final report  

SciTech Connect

This study has measured the performance of energy-saving 34-watt F40, T-12, rapid-start, lite white fluorescent lamps being operated by solid-state ballasts and lighting control equipment. The performances of these lamps are compared with those of 40-watt F40, T-12 rapid-start cool white fluorescent lamp systems studied in the prior phase of this project. With the 34-watt F40 lamps and various solid-state ballasts, system efficacy ranged from 67 to 84 lumens per watt and ballast factor from 0.756 to 0.908. Average system efficacy using the 34-watt lamps exceeded that of systems using 40-watt lamps and the same solid-state ballasts by only 1 percent even though the 34-watt lamps is about 6 percent more efficacious than the 40-watt lamp. This apparent discrepancy is due to increased ballast losses when operating the 34-watt lamps. However, the system efficacy of the 34-watt lamps used with a solid-state ballast exceeded that of a 34-watt, two-lamp system using the standard core-coil ballast by as much as 29 percent. A T-8 fluorescent lamp system with a smaller lamp diameter was also included in the study. Operating this lamp with a solid-state ballast produced a high system efficacy of 90 lumens per watt, a 39 percent improvement over the efficacy of a 40-watt F40 system using the standard core-coil ballast. The use of static controllers with 34-watt F40 lamps can result in excessive flickering (46 percent) and the generation of a second harmonic as high as 96 percent of the fundamental frequency. The dynamic controllers, when used to dim the 34-watt lamps generally cannot be dimmed as low as the 40-watt lamp system without flickering. In general, the 34-watt energy-saving lamps are appropriate as a retrofit to reduce illumination levels. However, for new construction, the 40-watt F40 argon filled lamps cost less, perform better, and provide a more reliable system. 5 refs., 27 figs., 9 tabs.

Verderber, R.R.

1988-06-01T23:59:59.000Z

299

List of Energy Mgmt. Systems/Building Controls Incentives | Open Energy  

Open Energy Info (EERE)

Mgmt. Systems/Building Controls Incentives Mgmt. Systems/Building Controls Incentives Jump to: navigation, search The following contains the list of 261 Energy Mgmt. Systems/Building Controls Incentives. CSV (rows 1 - 261) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central, North and SWEPCO) - Commercial Solutions Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional

300

Light Rail System Safety Improvements Using ITS Technologies  

E-Print Network (OSTI)

the flu side of the street onto the light rail track i thewhere a multi-lane street crosses the light rail tracks. Theran" the red light on the cross street, and started to enter

Chira-chavala, Ted; Coifman, Ben; Empey, Dan; Hansen, Mark; Lechner, Ed; Porter, Chris

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Measured Off-Grid LED Lighting System Performance  

E-Print Network (OSTI)

The Specter of Fuel-Based Lighting," Science 308:1263-1264.Mills. 2008. "Solid-State Lighting on a Shoestring Budget:The Economics of Off-Grid Lighting for Small Businesses in

Granderson, Jessica

2009-01-01T23:59:59.000Z

302

Adaptive control of Unmanned Aerial Systems  

E-Print Network (OSTI)

Adaptive control is considered to be one of the key enabling technologies for future high-performance, safety-critical systems such as air-breathing hypersonic vehicles. Adaptive flight control systems offer improved ...

Dydek, Zachary Thompson

2010-01-01T23:59:59.000Z

303

SRE-EDISON PLANT CONTROL SYSTEM  

SciTech Connect

The design of the control system for the steam plant to be used with the SRE is given. Operation of the system is discussed. (C.J.G.)

Hall, R.J.; Bilbao, E.D.; Young, E.

1959-04-14T23:59:59.000Z

304

Impact assessment and performance targets for lighting and envelope systems  

SciTech Connect

Electric lighting loads and cooling from solar heat gains and from lights are the two largest components of peak demand in commercial buildings. The most cost effective demand side management solutions are generally those that directly reduce or eliminate these loads. Existing technologies can provide modest reductions, however they are typically applied an a piecemeal manner that yields less than optimal results. The full potential of existing technologies will be realized when they are commercially available in an integrated package easily specifiable by architects and engineers. Emerging technologies can also be developed to provide even greater savings and extend the savings over a greater portion of the building floor area. This report assesses achievable energy and peak demand performance in California commercial buildings with technologies available today and in the future. We characterize energy performance over a large range of building envelope and lighting conditions, both through computer simulation models and through case study measured data, and subsequently determine reasonable energy targets if building design were further optimized with integrated systems of current or new technologies. Energy targets are derived from the study after consideration of industry priorities, design constraints, market forces, energy code influence, and the state of current building stock.

Sullivan, R.; Lee, E.S.; Selkowitz, S.

1992-06-01T23:59:59.000Z

305

Design of the Advanced Light Source timing system  

SciTech Connect

The Advanced Light Source (ALS) is a third generation synchrotron radiation facility, and as such, has several unique timing requirements. Arbitrary Storage Ring filling patterns and high single bunch purity requirements demand a highly stable, low jitter timing system with the flexibility to reconfigure on a pulse-to-pulse basis. This modular system utilizes a highly linear Gauss Clock with ``on the fly`` programmable setpoints to track a free-running Booster ramping magnet and provides digitally programmable sequencing and delay for Electron Gun, Linac, Booster Ring, and Storage Ring RF, Pulsed Magnet, and Instrumentation systems. It has proven itself over the last year of accelerator operation to be reliable and rock solid.

Fahmie, M.

1993-05-01T23:59:59.000Z

306

Mechanical Systems & Controls Group Staff Directory  

Science Conference Proceedings (OSTI)

Mechanical Systems and Controls Group Staff. Staff Listing. Steven T. Bushby, Leader, Supervisory Electronics Engineer, 301-975-5873. ...

2013-08-26T23:59:59.000Z

307

Control system for Kaplan hydro-turbine  

Science Conference Proceedings (OSTI)

In hydro power plants from Romania, there is a major interest for the implementation of digital systems for monitoring and control to replace the conventional control systems for power, frequency and voltage. Therefore is necessary to develop mathematical ... Keywords: Kaplan turbine, control system, turbine model

Matei Vinatoru; Eugen Iancu; Camelia Maican; Gabriela Canureci

2008-10-01T23:59:59.000Z

308

Controlled angular redirection of light via nanoimprinted disordered gratings  

E-Print Network (OSTI)

= mold, noxious off-gases, respiratory problems #12;Stressful work environments Lack of daylight, ventilation, connection with nature ­ eye-strain #12;The Fix ­ Priority on health More daylighting In stairs irrigation system. Or low-flush or dual flush toilets #12;Use Less Land Mixed use land planning = fewer car

309

Process control system using polarizing interferometer  

DOE Patents (OSTI)

A system for nondestructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading. 38 figures.

Schultz, T.J.; Kotidis, P.A.; Woodroffe, J.A.; Rostler, P.S.

1994-02-15T23:59:59.000Z

310

Process control system using polarizing interferometer  

DOE Patents (OSTI)

A system for non-destructively measuring an object and controlling industrial processes in response to the measurement is disclosed in which an impulse laser generates a plurality of sound waves over timed increments in an object. A polarizing interferometer is used to measure surface movement of the object caused by the sound waves and sensed by phase shifts in the signal beam. A photon multiplier senses the phase shift and develops an electrical signal. A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, random vibrations of the workpiece are utilized to develop discernible signals which can be sensed in the interferometer by only one photon multiplier. In addition the interferometer includes an arrangement for optimizing its sensitivity so that movement attributed to various waves can be detected in opaque objects. The interferometer also includes a mechanism for sensing objects with rough surfaces which produce speckle light patterns. Finally the interferometer per se, with the addition of a second photon multiplier is capable of accurately recording beam length distance differences with only one reading.

Schultz, Thomas J. (Maumee, OH); Kotidis, Petros A. (Waban, MA); Woodroffe, Jaime A. (North Reading, MA); Rostler, Peter S. (Newton, MA)

1994-01-01T23:59:59.000Z

311

Low-Level Radio Frequency System Development for the National Synchrotron Light Source II  

SciTech Connect

The National Synchrotron Light Source-II (NSLS-II) is a new ultra-bright 3GeV 3rd generation synchrotron radiation light source. The performance goals require operation with a beam current of 500mA and a bunch current of at least 0.5mA. The position and timing specifications of the ultra-bright photon beam imposes a set of stringent requirements on the performance of radio frequency (RF) control. In addition, commissioning and staged installation of damping wigglers and insertion devices requires the flexibility of handling varying beam conditions. To meet these requirements, a digital implementation of the LLRF is chosen, and digital serial links are planned for the system integration. The first prototype of the controller front-end hardware has been built, and is currently being tested.

Ma,H.; Rose, J.

2009-05-04T23:59:59.000Z

312

Department of Electrical Engineering Spring 2012 Boeing LED Strobe Light System  

E-Print Network (OSTI)

strobe light system used by Boeing. The current Xenon bulb system is bulky, inefficient, and unreliable other light bulbs, this improves the longevity of the device Excellent frequency response of the LEDsPENNSTATE Department of Electrical Engineering Spring 2012 Boeing LED Strobe Light System Overview

Demirel, Melik C.

313

Fuzzy logic control and optimization system  

DOE Patents (OSTI)

A control system (300) for optimizing a power plant includes a chemical loop having an input for receiving an input signal (369) and an output for outputting an output signal (367), and a hierarchical fuzzy control system (400) operably connected to the chemical loop. The hierarchical fuzzy control system (400) includes a plurality of fuzzy controllers (330). The hierarchical fuzzy control system (400) receives the output signal (367), optimizes the input signal (369) based on the received output signal (367), and outputs an optimized input signal (369) to the input of the chemical loop to control a process of the chemical loop in an optimized manner.

Lou, Xinsheng (West Hartford, CT)

2012-04-17T23:59:59.000Z

314

TITLE III EVALUATION REPORT FOR THE SUBSURFACE LIGHTING SYSTEM  

SciTech Connect

The objective of this evaluation is to provide recommendations to ensure consistency between the technical baseline requirements, baseline design, and the as-constructed Subsurface Lighting System. Recommendations for resolving discrepancies between the as-constructed system, and the technical baseline requirements are included in this report. Cost and Schedule estimates are provided for all recommended modifications. This report does not address items which do not meet current safety or code requirements. These items are identified to the CMO and immediate action is taken to correct the situation. The report does identify safety and code items for which the A/E is recommending improvements. The recommended improvements will exceed the minimum requirements of applicable code and safety guide lines. These recommendations are intended to improve and enhance the operation and maintenance of the facility.

L.J. Fernandez

1998-09-09T23:59:59.000Z

315

Diffracted light from latent images in photoresist for exposure control  

DOE Patents (OSTI)

In microelectronics manufacturing, an arrangement for monitoring and control of exposure of an undeveloped photosensitive layer on a structure susceptible to variations in optical properties in order to attain the desired critical dimension for the pattern to be developed in the photosensitive layer. This is done by ascertaining the intensities for one or more respective orders of diffracted power for an incident beam of radiation corresponding to the desired critical dimension for the photosensitive layer as a function of exposure time and optical properties of the structure, illuminating the photosensitive layer with a beam of radiation of one or more frequencies to which the photosensitive layer is not exposure-sensitive, and monitoring the intensities of the orders of diffracted radiation due to said illumination including at least the first order of diffracted radiation thereof, such that when said predetermined intensities for the diffracted orders are reached during said illumination of photosensitive layer, it is known that a pattern having at least approximately the desired critical dimension can be developed on the photosensitive layer.

Bishop, Kenneth P. (Rio Rancho, NM); Brueck, Steven R. J. (Albuquerque, NM); Gaspar, Susan M. (Albuquerque, NM); Hickman, Kirt C. (Albuquerque, NM); McNeil, John R. (Albuquerque, NM); Naqvi, S. Sohail H. (Albuquerque, NM); Stallard, Brian R. (Albuquerque, NM); Tipton, Gary D. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

316

Control Systems Security Standards: Accomplishments And Impacts |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Control Systems Security Standards: Accomplishments And Impacts Control Systems Security Standards: Accomplishments And Impacts Control Systems Security Standards: Accomplishments And Impacts This report describes the accomplishments and impacts of the standards team towards achieving these three goals and describes the follow-on efforts that need to be made toward meeting the priority strategies defined in the DOE/DHS Roadmap to Secure Control Systems in the Energy Sector. Control Systems Security Standards: Accomplishments & Impacts More Documents & Publications A Summary of Control System Security Standards Activities in the Energy Sector (October 2005) Roadmap to Secure Control Systems in the Energy Sector 2006 - Presentation to the 2008 ieRoadmap Workshop DOE/OE National SCADA Test Bed Fiscal Year 2009 Work Plan

317

Energymaster Desiccant System Application to Light Commercial Buildings  

E-Print Network (OSTI)

Desiccant cooling systems offer unique advantages over conventional equipment in certain applications. AskCorp's Energymaster unit has been applied in several commercial situations where these advantages are most significant. The magnitude of operating cost savings and improved control is greatest in humid climates where both ambient enthalpy levels and space latent loads are highest.

Blanpied, M. C.; Coellner, J. A.; Macintosh, D. S.

1987-01-01T23:59:59.000Z

318

DIII-D cryogenics control system status  

SciTech Connect

The DIII-D cryogenics system provides liquid helium for various auxiliary systems at the DIII-D tokamak facility. The system described here executes control and supervision of the cryogenics plant and associated load systems which include four neutral beam injectors, superconducting magnets, and an in-vessel tokamak cryocondensation pump. The recent addition of this divertor cryopump represented a major increase in the scope of the control system and greater need for reliable and automatic operation. The pump must be precooled, cooled and regenerated in a relatively short period of time under automatic control. Since the pump is located in the tokamak primary vacuum, coordination with the machine vacuum control system and consideration for the requirements of physics operations and vessel wall conditioning are required. A programmable logic controller is the central element in the cryogenics control system and exercises direct or supervisory control over the liquefier, gas management and loads. In the time since the control system was built during 1989, additions and improvements have been made to simplify operation and support upgrades. Cryogenics system capacity has been upgraded by the purchase of a new 150 {ell}/hr helium liquefier, a second 400 hp helium compressor and additional gas storage. The new liquefier incorporates a controller of its own which exchanges information with the cryogenics control system. This independent controller relieved the main system of liquefier process control tasks but necessitates much finer control of the system high and low pressures. The control system upgrades and automation are discussed with emphasis on the divertor cryocondensation pump control.

Campbell, G.L.; Harris, J.J.; Schaubel, K.M.

1993-09-01T23:59:59.000Z

319

Performance of MEMS-based visible-light adaptive optics at Lick Observatory: Closed- and open-loop control  

E-Print Network (OSTI)

At the University of California's Lick Observatory, we have implemented an on-sky testbed for next-generation adaptive optics (AO) technologies. The Visible-Light Laser Guidestar Experiments instrument (ViLLaGEs) includes visible-light AO, a micro-electro-mechanical-systems (MEMS) deformable mirror, and open-loop control of said MEMS on the 1-meter Nickel telescope at Mt. Hamilton. In this paper we evaluate the performance of ViLLaGEs in open- and closed-loop control, finding that both control methods give equivalent Strehl ratios of up to ~ 7% in I-band and similar rejection of temporal power. Therefore, we find that open-loop control of MEMS on-sky is as effective as closed-loop control. Furthermore, after operating the system for three years, we find MEMS technology to function well in the observatory environment. We construct an error budget for the system, accounting for 130 nm of wavefront error out of 190 nm error in the science-camera PSFs. We find that the dominant known term is internal static error...

Morzinski, Katie; Gavel, Donald T; Grigsby, Bryant; Dillon, Daren; Reinig, Marc; Macintosh, Bruce A

2010-01-01T23:59:59.000Z

320

A field demonstration of energy conservation using occupancy sensor lighting control in equipment rooms  

SciTech Connect

The Pacific Northwest Laboratory identified energy savings potential of automatic equipment-room lighting controls, which was demonstrated by the field experiment described in this report. Occupancy sensor applications have gained popularity in recent years due to improved technology that enhances reliability and reduces cost. Automatic lighting control using occupancy sensors has been accepted as an energy-conservation measure because it reduces wasted lighting. This study focused on lighting control for equipment rooms, which have inherent conditions ideal for automatic lighting control, i.e., an area which is seldom occupied, multiple users of the area who would not know if others are in the room when they leave, and high lighting energy intensity in the area. Two rooms were selected for this study: a small equipment room in the basement of the 337 Building, and a large equipment area in the upper level of the 329 Building. The rooms were selected to demonstrate the various degrees of complexity which may be encountered in equipment rooms throughout the Hanford Site. The 337 Building equipment-room test case demonstrated a 97% reduction in lighting energy consumption, with an annual energy savings of $184. Including lamp-replacement savings, a total savings of $306 per year is offset by an initial installation cost of $1,100. The installation demonstrates a positive net present value of $2,858 when the lamp-replacement costs are included in a life-cycle analysis. This also corresponds to a 4.0-year payback period. The 329 Building equipment-room installation resulted in a 92% reduction in lighting energy consumption. This corresponds to annual energy savings of $1,372, and a total annual savings of $2,104 per year including lamp-replacement savings. The life-cycle cost analysis shows a net present value of $15,855, with a 5.8-year payback period.

Dagle, J.E.

1992-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Control Systems Security News Archive | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Delivery Systems Cybersecurity Control Systems Security News Archive Control Systems Security News Archive Control Systems Security News Archive September 2010 - Secretary Chu...

322

A multiprogramming system for process control  

Science Conference Proceedings (OSTI)

This paper describes an operational small computer multiprogramming system developed for the control of the Stanford Two Mile Linear Accelerator (SLAC). The system has many features of larger systems such as dynamic memory allocation and interprocess ...

Sam Howry

1972-06-01T23:59:59.000Z

323

26.3 / Y.-P. Huang 26.3: Multidirectional Asymmetrical Microlens-Array Light Control Films for  

E-Print Network (OSTI)

, leads to a ~5x gain in brightness over the MgO standard white and 12:1 contrast ratio for color STN advantages of the MAMA light control film. In this paper, we demonstrate the performances of MAMA light is poor. Adding a MAMA light control film not only shifts the peak reflectance of the STN panel from 300

Wu, Shin-Tson

324

REACTOR CONTROL ROD OPERATING SYSTEM  

DOE Patents (OSTI)

A nuclear reactor control rod mechanism is designed which mechanically moves the control rods into and out of the core under normal conditions but rapidly forces the control rods into the core by catapultic action in the event of an emergency. (AEC)

Miller, G.

1961-12-12T23:59:59.000Z

325

Solar Self Help Inc aka Light Energy Systems | Open Energy Information  

Open Energy Info (EERE)

navigation, search Name Solar Self Help Inc. (aka Light Energy Systems) Place Concord, California Sector Solar Product California-based designer and installer of solar systems....

326

Indirect control of quantum system via accessor: pure coherent control without system excitation  

E-Print Network (OSTI)

A pure indirect control of quantum systems via quantum accessor is investigated. In this control scheme, we do not apply any external classical excitation fields on the controlled system and we control a quantum system via a quantum accessor and classical control fields control the accessor only. Complete controllability is investigated for arbitrary finite dimensional quantum systems and exemplified by 2 and 3 dimensional systems. The scheme exhibits some advantages; it uses less qubits in accessor and does not depend on the energy-level structure of the controlled system.

H. C. Fu; Hui Dong; X. F. Liu; C. P. Sun

2008-07-09T23:59:59.000Z

327

SAFETY SYSTEM FOR CONTROL ROD  

DOE Patents (OSTI)

A structure for monitoring the structural continuity of a control rod foi a neutron reactor is presented. A electric conductor readily breakable under mechanical stress is fastened along the length of the control rod at a plurality of positions and forms a closed circuit with remote electrical components responsive to an open circuit. A portion of the conductor between the control rod and said components is helically wound to allow free and normally unrestricted movement of the segment of conductor secured to the control rod relative to the remote components. Any break in the circuit is indicative of control rod breakage. (AEC)

Paget, J.A.

1963-05-14T23:59:59.000Z

328

HIGH-LEVEL CONTROL SYSTEM IN C#  

Science Conference Proceedings (OSTI)

We have started upgrading the control room programs for the injector at the Advanced Light Source (ALS). We chose to program in C* exclusively on the .NET Framework to create EPICS client programs on Windows Vista PCs. This paper reports the status of this upgrade project.

Nishimura, Hiroshi; Timossi, Chris; Portmann, Greg; Urashka, Michael.; Ikami, Craig; Beaudrow, M.

2008-10-14T23:59:59.000Z

329

An introduction to Digital Addressable Lighting Interface (DALI) systems & study of a DALI day lighting application.  

E-Print Network (OSTI)

??The DALI (Digital Addressable Lighting Interface) protocol has set forth the requirements for a digital fluorescent ballast that out performs its predecessors with respect to… (more)

Meyer, Lisa

2007-01-01T23:59:59.000Z

330

Continuous Controls: Lighting Energy Management for Retrofit and New Construction Projects  

E-Print Network (OSTI)

The rising interest of specifiers and end-users in Lighting Energy Management (LEM) control equipment has led to an increased need for further education in the selection, capabilities and applications of such equipment. This paper addresses these and related points for a particular type of LEM equipment referred to as "continuous controls." More specifically, the need for such equipment and its performance are reviewed. The remainder of the paper discusses the capabilities and applications of continuous control equipment for retrofit and new construction projects. Particular attention is drawn to the need for specifiers and end-users to become more control conscious as continuous controls become more fully integrated into building design.

Schuett, R.

1985-01-01T23:59:59.000Z

331

A Meta-Analysis of Energy Savings from Lighting Controls in Commercial  

NLE Websites -- All DOE Office Websites (Extended Search)

A Meta-Analysis of Energy Savings from Lighting Controls in Commercial A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings Title A Meta-Analysis of Energy Savings from Lighting Controls in Commercial Buildings Publication Type Report Year of Publication 2011 Authors Williams, Alison A., Barbara A. Atkinson, Karina Garbesi, Francis M. Rubinstein, and Erik Page Series Title LBNL-5095E Pagination 25 Date Published September Keywords controls, daylighting, occupancy sensors, tuning Abstract Researchers have been quantifying energy savings from lighting controls in commercial buildings for more than 30 years. This study provides a meta-analysis of estimates of energy savings identified in the literature-240 savings estimates from 88 papers and case studies, categorized into daylighting strategies, occupancy strategies, personal tuning, and institutional tuning. Beginning with an overall average of savings estimates by control strategy, this paper adds successive analytical filters to identify potential biases introduced to the estimates by different analytical approaches. Based on the meta-analysis, the best estimates of average energy savings potential are 24% for occupancy, 28% for daylighting, 31% for personal tuning, 36% for institutional tuning, and 38% for multiple approaches. The results suggest that simulations significantly overestimate (by at least 10%) the average savings obtainable from daylighting in actual buildings.

332

Control of non-controllable quantum systems: A quantum control algorithm based on Grover iteration  

E-Print Network (OSTI)

A new notion of controllability, eigenstate controllability, is defined for finite-dimensional bilinear quantum mechanical systems which are neither strongly completely controllably nor completely controllable. And a quantum control algorithm based on Grover iteration is designed to perform a quantum control task of steering a system, which is eigenstate controllable but may not be (strongly) completely controllable, from an arbitrary state to a target state.

Chen-Bin Zhang; Dao-Yi Dong; Zong-Hai Chen

2005-03-02T23:59:59.000Z

333

Self-Assembly Strategies for Integrating Light Harvesting and Charge Separation in Artificial Photosynthetic Systems  

DOE Green Energy (OSTI)

In natural photosynthesis, organisms optimize solar energy conversion through organized assemblies of photofunctional chromophores and catalysts within proteins that provide specifically tailored environments for chemical reactions. As with their natural counterparts, artificial photosynthetic systems for practical solar fuels production must collect light energy, separate charge, and transport charge to catalytic sites where multielectron redox processes will occur. While encouraging progress has been made on each aspect of this complex problem, researchers have not yet developed self-ordering and self-assembling components and the tailored environments necessary to realize a fully-functional artificial system. Previously researchers have used complex, covalent molecular systems comprised of chromophores, electron donors, and electron acceptors to mimic both the light-harvesting and the charge separation functions of photosynthetic proteins. These systems allow for study of the dependencies of electron transfer rate constants on donor?acceptor distance and orientation, electronic interaction, and the free energy of the reaction. The most useful and informative systems are those in which structural constraints control both the distance and the orientation between the electron donors and acceptors. Self-assembly provides a facile means for organizing large numbers of molecules into supramolecular structures that can bridge length scales from nanometers to macroscopic dimensions. The resulting structures must provide pathways for migration of light excitation energy among antenna chromophores, and from antennas to reaction centers. They also must incorporate charge conduits, that is, molecular 'wires' that can efficiently move electrons and holes between reaction centers and catalytic sites. The central scientific challenge is to develop small, functional building blocks with a minimum number of covalent linkages, which also have the appropriate molecular recognition properties to facilitate self-assembly of complete, functional artificial photosynthetic systems. In this Account, we explore how self-assembly strategies involving ?-stacking can be used to integrate light harvesting with charge separation and transport.

Wasielewski, Michael R. (NWU)

2011-09-28T23:59:59.000Z

334

US manufacturers of commercially available stand-alone photovoltaic lighting systems  

DOE Green Energy (OSTI)

This report introduces photovoltaic (PV) lighting systems, gives some specifications for ordering these systems, and provides a list of some of the manufacturers of these systems in the United States. These PV lighting systems are all commercially available. They are stand-alone systems because they are not tied to the electric utility power grid.

McNutt, P.

1994-05-01T23:59:59.000Z

335

Control system for solar heating and cooling  

DOE Green Energy (OSTI)

A control system is being developed that will be capable of operating solar heating and cooling systems covering a wide range of configurations, and using different operating strategies that may be optimal for different climatic regions. To insure widespread applicability of the control system, it is being designed to allow for modification for operating with essentially all practical heating and cooling system configurations and control algorithms simply by interchange of replaceable modules in the circuitry. An experimental heating and cooling system, the main purpose of which is to allow testing and exercise of the controller, was designed so that it could be operated in these various configurations.

Wahlig, M.; Binnall, E.; Dols, C.; Graven, R.; Selph, F.; Shaw, R.; Simmons, M.

1975-08-01T23:59:59.000Z

336

Energy saving system for office lighting by using PSO and ZigBee network  

Science Conference Proceedings (OSTI)

In order to reduce the amount of wasted energy in office lighting and provide a major contribution to lowering overall energy consumption, we are developing a new energy saving system for office lighting by using adjustable lamp, ZigBee Wireless Sensor ... Keywords: PSO, energy saving system, office lighting, wireless sensor network, zigbee

Wa Si; Harutoshi Ogai; Tansheng Li; Masatoshi Ogawa; Katsumi Hirai; Hidehiro Takahashi

2010-12-01T23:59:59.000Z

337

IEEE Transactions on Consumer Electronics Visible Light Communication for Audio Systems  

E-Print Network (OSTI)

to be constantly illuminated. Keywords: audio systems, light emitting diodes; audio broadcasting. 1. Introduction. Conclusions An audio system made up of light emitting diode (LED) and LED dot matrix display is described.G. Craford, "High Brightness Light Emitting Diodes", Semiconductors and Semimetals Vol. 48, Academic Press

Pang, Grantham

338

Analytic Controllability of Time-Dependent Quantum Control Systems  

E-Print Network (OSTI)

The question of controllability is investigated for a quantum control system in which the Hamiltonian operator components carry explicit time dependence which is not under the control of an external agent. We consider the general situation in which the state moves in an infinite-dimensional Hilbert space, a drift term is present, and the operators driving the state evolution may be unbounded. However, considerations are restricted by the assumption that there exists an analytic domain, dense in the state space, on which solutions of the controlled Schrodinger equation may be expressed globally in exponential form. The issue of controllability then naturally focuses on the ability to steer the quantum state on a finite-dimensional submanifold of the unit sphere in Hilbert space -- and thus on analytic controllability. A relatively straightforward strategy allows the extension of Lie-algebraic conditions for strong analytic controllability derived earlier for the simpler, time-independent system in which the drift Hamiltonian and the interaction Hamiltonia have no intrinsic time dependence. Enlarging the state space by one dimension corresponding to the time variable, we construct an augmented control system that can be treated as time-independent. Methods developed by Kunita can then be implemented to establish controllability conditions for the one-dimension-reduced system defined by the original time-dependent Schrodinger control problem. The applicability of the resulting theorem is illustrated with selected examples.

Chunhua Lan; Tzyh-Jong Tarn; Quo-Shin Chi; John W. Clark

2004-09-22T23:59:59.000Z

339

Safe controllers design for industrial automation systems  

Science Conference Proceedings (OSTI)

The design of safe industrial controllers is one of the most important domains related to Automation Systems research. To support it, synthesis and analysis techniques are available. Among the analysis techniques, two of the most important are Simulation ... Keywords: Formal verification, Industrial systems behaviour modelling, Real-time systems, Safe controllers, Simulation

José Machado; Eurico Seabra; José C. Campos; Filomena Soares; Celina P. Leăo

2011-05-01T23:59:59.000Z

340

Adding PCs to SLC Control System  

SciTech Connect

The SLAC Controls Department has interfaced IBM-Compatible PCs to the SLC Control System, for use by the Final Focus Test Beam (FFTB) experimenters, who are building new accelerator equipment and developing and testing it at their home institutions. They will bring the equipment to SLAC and integrate it into the control system using a new software package. The machine physicists and operators will use the existing SLC control system applications and database device types to control and monitor the equipment. The PCs support a limited control environment: they run DOS and exchange messages with the existing control system via TCP/IP over ethernet, using the new SLC Area Message Service. This mechanism will also allow SLC to implement other commercial device controllers that can communicate over ethernet and run the same software interface code.

Lahey, T.; Levitt, S.; MacKenzie, R.; Spencer, N.; Underwood, K.

1993-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Controlling Multiparticle System on a Line. I  

E-Print Network (OSTI)

We study a classical multiparticle system (such as Toda lattice) whose dynamics we intend to control by forces applied to few particles of the system. Various problem settings, typical for control theory are posed for this model; among those: studying accessibility and controllability properties, structure properties and feedback linearization of respective control system, time-optimal relocation of particles. We obtain complete or partial answers to the posed questions; criteria and methods of geometric control theory are employed. In the present part I we consider nonperiodic multiparticle system. In the forthcoming Part II we address controllability issue for multiparticle system subject to periodic boundary conditions. That study would require an extension and refinement of known methods of geometric control.

Andrey Sarychev

2008-09-13T23:59:59.000Z

342

Wireless Networked Lighting Systems for Optimizing Energy Savings and User Satisfaction  

E-Print Network (OSTI)

algorithm formulates lighting control as a linear programming problem to minimize energy usage and meet buildings with the following two objectives: 1) minimize the overall lighting energy usage and 2) provide conservation in the energy-efficient lighting technologies. Studies conducted in typical office environments

Agogino, Alice M.

343

Control system for heat exchangers fans in a refrigeration system  

Science Conference Proceedings (OSTI)

The paper presents a method for controlling evaporator and condenser fans in a refrigeration system. The refrigeration system includes a refrigerant circuit defined by a compressor, a condenser, a throttling device, and an evaporator. The system includes ... Keywords: controlling, fan, refrigeration system, variable frequency drive unit

Cristian Iosifescu; Valeriu Damian; C?lin Ciufudean

2010-05-01T23:59:59.000Z

344

Resilient Control Systems: Next Generation Design Research  

Science Conference Proceedings (OSTI)

Since digital control systems were introduced to the market more than 30 years ago, the operational efficiency and stability gained through their use have fueled our migration and ultimate dependence on them for the monitoring and control of critical infrastructure. While these systems have been designed for functionality and reliability, a hostile cyber environment and uncertainties in complex networks and human interactions have placed additional parameters on the design expectations for control systems.

Craig Rieger

2009-05-01T23:59:59.000Z

345

Control system for wind-powered generators  

DOE Green Energy (OSTI)

In a system of wind-powered generators, a reliable yet inexpensive control system is desirable. Such a system would be completely automatic so it could be left unattended for long periods. It would respond to electrical representations of data such as bearing temperature, vibration, wind velocity, turbine velocity, torque, or any other pertinent data. It would respond by starting or stopping the turbine, controlling the loading, or sounding an alarm. A microprocessor-based controller capable of these functions is described.

Kroth, G.J.

1977-05-01T23:59:59.000Z

346

New User Interface Capabilities for Control Systems  

Science Conference Proceedings (OSTI)

Latest technologies promise new control system User Interface (UI) features and greater interoperability of applications. New developments using Java and Eclipse aim to unify diverse control systems and make communication between applications seamless. Web based user interfaces can improve portability and remote access. Modern programming tools improve efficiency, support testing and facilitate shared code. This paper will discuss new developments aimed at improving control system interfaces and their development environment.

Kasemir, Kay [ORNL

2009-01-01T23:59:59.000Z

347

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

Response Controls for HVAC Systems Clifford Federspiel,tests. Figure 5: Specific HVAC electric power consumptioncontrol, demand response, HVAC, wireless Executive Summary

Federspiel, Clifford

2010-01-01T23:59:59.000Z

348

R&D ERL: Controls System  

SciTech Connect

This paper examines the equipment and software from which the controls system interface for the Energy Recovery Linac (ERL) will be implemented at the Brookhaven National Laboratory.

Hoff, L.; Jamilkowski, J.

2010-01-01T23:59:59.000Z

349

Network aspects of the Fermilab control system  

SciTech Connect

The control system of the Fermi National Accelerator is a heavily computerized network of distributed processors. One part of the control system includes a multidrop network of eleven Lockheed MAC-16 processors, a Digital Equipment Corporation PDP-11 computer, a Xerox 530, and a Control Data 6600 system. These computers exchange information using serial hardware and dedicated cable buses. The individual functions of the central processing units in this network, the message protocols for computer communications, and design guidelines for future distributed processing control systems are discussed.

Barton, H.R. Jr.

1977-01-01T23:59:59.000Z

350

Advanced nonlinear control of complex power systems.  

E-Print Network (OSTI)

??Nowadays, advanced controller design is called upon to guarantee the secure and reliable operation of power systems. To meet this requirement, this work proposed three… (more)

Li, Hong Yin.

2008-01-01T23:59:59.000Z

351

On Cyber Security for Networked Control Systems  

E-Print Network (OSTI)

security efforts by establishing the national SCADA test bed program INL [INL/EXT- 05-00671, Idaho National Laboratory. US-CERT [2008], Control Systems Security

Amin, Saurabh

2011-01-01T23:59:59.000Z

352

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

Meeting, Los Angeles, California, July 28 - August 1, 1975),Lawrence Berkeley Laboratory University of CaliforniaBerkeley, California 94720 August 1975 A control system is

Dols, C.

2010-01-01T23:59:59.000Z

353

Control system for fluid heated steam generator  

DOE Patents (OSTI)

A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

Boland, James F. (Bonneville County, ID); Koenig, John F. (Idaho Falls, ID)

1985-01-01T23:59:59.000Z

354

Control system for fluid heated steam generator  

DOE Patents (OSTI)

A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

Boland, J.F.; Koenig, J.F.

1984-05-29T23:59:59.000Z

355

Portable, remote environmental control system  

Science Conference Proceedings (OSTI)

A portable thermostat is coupled to the control unit of a heating or cooling device through a radio link. The RF signal transmitted by the thermostat is encoded and then decoded by the control unit in order to prevent interference with other similar devices. In order to maximize the life of a battery powering the thermostat, the thermostat calls for the energization of a heating or cooling device by transmitting the RF signal at widely spaced intervals. The heating or cooling device is energized by shunting a pair of terminals, thereby completing an AC control loop. The unit applies the terminals to a storage copacitor during a small portion of each EC cycle to power the control unit while shunting the terminals during the remaining part of the cycle.

Cherry, R.L.; Maes, R.P.; Pfeiffer, G.F.

1984-02-28T23:59:59.000Z

356

First Light Adaptive Optics System for Large Binocular Telescope S. Espositoa  

E-Print Network (OSTI)

First Light Adaptive Optics System for Large Binocular Telescope S. Espositoa , A. Tozzia , D of the single conjugate Adaptive Optics system to be installed on the LBT telescope. This system will be located optics is supposed to start from the beginning. The Adaptive Optics system to be used in first light

Fini, Luca

357

Window Signaling Systems: Control Strategies & Occupant Behavior  

E-Print Network (OSTI)

and L.M Parkins. 1984. “Window-Opening Behavior in OfficeOccupant Response to Window Control Signaling Systems," CBEDaly, A. 2002. “Operable windows and HVAC systems. ” HPAC

Ackerly, Katie; Brager, Gail

2012-01-01T23:59:59.000Z

358

A MICROCOMPUTER CONTROL SYSTEM FOR THE SUPERHILAC THIRD INJECTOR  

E-Print Network (OSTI)

A MICROCOMPUTER CONTROL SYSTEM FOR THE SUPERHILAC THIRD·-··--A MICROCOMPUTER CONTROL SYSTEM FOR THE SUPERHILAC 'L. J. Besse** Abstract A new control system using the latest

Lancaster, H.D.

2010-01-01T23:59:59.000Z

359

PICOntrol: using a handheld projector for direct control of physical devices through visible light  

Science Conference Proceedings (OSTI)

Today's environments are populated with a growing number of electric devices which come in diverse form factors and provide a plethora of functions. However, rich interaction with these devices can become challenging if they need be controlled from a ... Keywords: handheld projector, physical devices, visible light communication

Dominik Schmidt; David Molyneaux; Xiang Cao

2012-10-01T23:59:59.000Z

360

Laser Inertial Fusion Energy Control Systems  

Science Conference Proceedings (OSTI)

A Laser Inertial Fusion Energy (LIFE) facility point design is being developed at LLNL to support an Inertial Confinement Fusion (ICF) based energy concept. This will build upon the technical foundation of the National Ignition Facility (NIF), the world's largest and most energetic laser system. NIF is designed to compress fusion targets to conditions required for thermonuclear burn. The LIFE control systems will have an architecture partitioned by sub-systems and distributed among over 1000's of front-end processors, embedded controllers and supervisory servers. LIFE's automated control subsystems will require interoperation between different languages and target architectures. Much of the control system will be embedded into the subsystem with well defined interface and performance requirements to the supervisory control layer. An automation framework will be used to orchestrate and automate start-up and shut-down as well as steady state operation. The LIFE control system will be a high parallel segmented architecture. For example, the laser system consists of 384 identical laser beamlines in a 'box'. The control system will mirror this architectural replication for each beamline with straightforward high-level interface for control and status monitoring. Key technical challenges will be discussed such as the injected target tracking and laser pointing feedback. This talk discusses the the plan for controls and information systems to support LIFE.

Marshall, C; Carey, R; Demaret, R; Edwards, O; Lagin, L; Van Arsdall, P

2011-03-18T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Transport control in deterministic ratchet system  

E-Print Network (OSTI)

We study the control of transport properties in a deterministic inertia ratchet system via the extended delay feedback method. A chaotic current of a deterministic inertia ratchet system is controlled to a regular current by stabilizing unstable periodic orbits embedded in a chaotic attractor of the unperturbed system. By selecting an unstable periodic orbit, which has a desired transport property, and stabilizing it via the extended delay feedback method, we can control transport properties of the deterministic inertia ratchet system. Also, we show that the extended delay feedback method can be utilized for separation of particles in the deterministic inertia ratchet system as a particle's initial condition varies.

Woo-Sik Son; Jung-Wan Ryu; Dong-Uk Hwang; Soo-Young Lee; Young-Jai Park; Chil-Min Kim

2006-12-17T23:59:59.000Z

362

Experience with non-fuel-bearing components in LWR (light-water reactor) fuel systems  

SciTech Connect

Many non-fuel-bearing components are so closely associated with the spent fuel assemblies that their integrity and behavior must be taken into consideration with the fuel assemblies, when handling spent fuel of planning waste management activities. Presented herein is some of the experience that has been gained over the past two decades from non-fuel-bearing components in light-water reactors (LWRs), both pressurized-water reactors (PWRs) and boiling-water reactors (BWRs). Among the most important of these components are the control rod systems, the absorber and burnable poison rods, and the fuel assembly channels. 15 refs., 5 figs., 2 tabs.

Bailey, W.J.; Berting, F.M.

1990-12-01T23:59:59.000Z

363

SunPower Corporation Systems formerly PowerLight | Open Energy Information  

Open Energy Info (EERE)

Corporation Systems formerly PowerLight Corporation Systems formerly PowerLight Jump to: navigation, search Name SunPower Corporation, Systems (formerly PowerLight) Place Berkeley, California Zip 94702 Sector Efficiency, Services, Solar Product US-based designer, manufacturer and installer of grid-connected solar electric systems and energy efficiency services, including solar tracking devices, in the US. References SunPower Corporation, Systems (formerly PowerLight)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. SunPower Corporation, Systems (formerly PowerLight) is a company located in Berkeley, California . References ↑ "SunPower Corporation, Systems (formerly PowerLight)" Retrieved from

364

Mechanical Systems and Controls Group  

Science Conference Proceedings (OSTI)

... improves and lowers the cost of building ... building information, including real-time sensor data, to ... Systems for Improved Energy Performance Project ...

2013-12-19T23:59:59.000Z

365

Structural Behavior of FRP Lighting Pole System - Programmaster.org  

Science Conference Proceedings (OSTI)

Most of the lighting pole is made with steel and it is vulnerable to corrosion due to its hazardous surrounding environment. To mitigate such corrosion problems, ...

366

New OLED Lighting Systems Shine Bright, Save Energy  

Energy.gov (U.S. Department of Energy (DOE))

Case study that describes how Universal Display Corporation received SBIR funding to adapt its PHOLED lighting technology for high-end commercial and institutional building applications.

367

Coordinated Control of HVAC Systems  

E-Print Network (OSTI)

This paper describes the development of new control logic for starting and stopping energy-intensive equipment in buildings such as staged air-conditioning units. The concept is to use pulse-width modulation (PWM) instead of level-crossing logic. A finite state machine is used to handle the case where a single unit has multiple stages of operation. An optimized coordinator determines the phase of the PWM signals of each unit so that peak demand for power is minimized over each PWM period. Control logic for the PWM function was developed so that the phase could be manipulated by the coordinator. Computer simulations were used to assess the performance of the new strategy and to compare it to levelcrossing logic. The following five metrics were used to assess the performance: 1) magnitude of the control error, 2) start/stop frequency, 3) average power consumption, 4) standard deviation of the power consumption, 5) peak power consumption. The computer simulations showed that the new strategy could reduce peak power consumption by 20% relative to level-crossing logic. The computer simulations also showed that the new strategy increased the magnitude of the space temperature control error by 11% and increased the number of start/stop operations by 27% relative to level-crossing logic.

Federspiel, C.; Lanning, S. D.; Li, H.; Auslander, D. M.

2001-01-01T23:59:59.000Z

368

Teaching the Environment to Control Quantum Systems  

E-Print Network (OSTI)

A non-equilibrium, generally time-dependent, environment whose form is deduced by optimal learning control is shown to provide a means for incoherent manipulation of quantum systems. Incoherent control by the environment (ICE) can serve to steer a system from an initial state to a target state, either mixed or in some cases pure, by exploiting dissipative dynamics. Implementing ICE with either incoherent radiation or a gas as the control is explicitly considered, and the environmental control is characterized by its distribution function. Simulated learning control experiments are performed with simple illustrations to find the shape of the optimal non-equilibrium distribution function that best affects the posed dynamical objectives.

Alexander Pechen; Herschel Rabitz

2006-09-12T23:59:59.000Z

369

Automated flow-temperature-humidity control system  

SciTech Connect

An automated system that controls air flow, temperature, and humidity was developed from a commercially available temperature-humidity indicator and a specially built flow-temperature-humidity control module. Parameters are set using direct-reading dials on the control module. The air flow is maintained using a mass-flow controller while process controllers connected to the indicator regulate humidity and temperature. The system will run indefinitely without need for operator intervention. If the module and indicator are calibrated properly, accurate air flows (+-2% of full scale), temperatures (+-0.3/sup 0/C), and humidities (+-2% RH) can be achieved.

Nelson, G.O.; Taylor, R.D.

1980-10-01T23:59:59.000Z

370

Guidelines help design pneumatic control systems  

Science Conference Proceedings (OSTI)

The three areas of particular interest to the gas-transmission engineer about pneumatic-instrument-operated control valves are (1) the fail-position probability of a system, (2) the designated action required for each component in the pneumatic circuit, and (3) the schematically defined position of each component. Compared with self-operated control valves, the instrument-operated systems perform many more functions; they can control the flow and the volume or flow-volume combinations, with both pressure override and underride, and will adapt conveniently to remote operation. Schematic diagrams illustrate the numerous system designs possible for pressure-regulation, flow-control, and relief-valve duties.

Curry, R.N.

1981-01-26T23:59:59.000Z

371

Operational experience with the CEBAF control system  

SciTech Connect

The CEBAF accelerator at Thomas Jefferson National Accelerator Facility (Jefferson Lab) successfully began its experimental nuclear physics program in November of 1995 and has since surpassed predicted machine availability. Part of this success can be attributed to using the EPICS (Experimental Physics and Industrial Control System) control system toolkit. The CEBAF control system is one of the largest accelerator control system now operating. It controls approximately 338 SRF cavities, 2,300 magnets, 500 beam position monitors and other accelerator devices, such as gun hardware and other beam monitoring devices. All told, the system must be able to access over 125,000 database records. The system has been well received by both operators and the hardware designers. The EPICS utilities have made the task of troubleshooting systems easier. The graphical and test-based creation tools have allowed operators to custom build control screens. In addition, the ability to integrate EPICS with other software packages, such as Tcl/Tk, has allowed physicists to quickly prototype high-level application programs, and to provide GUI front ends for command line driven tools. Specific examples of the control system applications are presented in the areas of energy and orbit control, cavity tuning and accelerator tune up diagnostics.

Hovater, C.; Chowdhary, M.; Karn, J.; Tiefenback, M.; Zeijts, J. van; Watson, W.

1996-10-01T23:59:59.000Z

372

Report on the SLC control system  

SciTech Connect

The SLC control system is based on a VAX 11/780 Host computer with approximately 50 microprocessor clusters which provide distributed intelligence and control of all CAMAC interface modules. This paper will present an overview of the system including current status and a description of the software architecture and communication protocols. 8 refs.

Phinney, N.

1985-05-01T23:59:59.000Z

373

Randomized Model Predictive Control for HVAC Systems  

Science Conference Proceedings (OSTI)

Heating, Ventilation and Air Conditioning (HVAC) systems play a fundamental role in maintaining acceptable thermal comfort and Indoor Air Quality (IAQ) levels, essentials for occupants well-being. Since performing this task implies high energy requirements, ... Keywords: Copulas, Learning, Randomized Model Predictive Control, Smart Buildings, Sustainable Control Systems

Alessandra Parisio, Damiano Varagnolo, Daniel Risberg, Giorgio Pattarello, Marco Molinari, Karl H. Johansson

2013-11-01T23:59:59.000Z

374

Multi-agent neural business control system  

Science Conference Proceedings (OSTI)

Small to medium sized companies require a business control mechanism in order to monitor their modus operandi and analyse whether they are achieving their goals. A tool for the decision support process was developed based on a multi-agent system that ... Keywords: Agents technology, Business control system, Case-based reasoning, Experience management, Maximum Likelihood Hebbian Learning, Reasoning

M. Lourdes Borrajo; Juan M. Corchado; Emilio S. Corchado; María A. Pellicer; Javier Bajo

2010-03-01T23:59:59.000Z

375

Automatic control in electric power systems  

Science Conference Proceedings (OSTI)

The recent progress in the application of automatic controls to electric power systems is outlined. After a brief review of present trends in power system planning and operation, the role of computers and of modern control methods and techniques in optimal ...

G. Quazza

1970-01-01T23:59:59.000Z

376

Control System Commissioning for Enhanced Building Operations  

E-Print Network (OSTI)

This paper highlights the import role control systems play in the operation of modern buildings and describes ways to improve the final stage of commissioning. We also describe practical issues associated with modern IT-oriented control systems that can impact a commissioning exercise.

Salsbury, T. I.; Singhal, A.

2003-01-01T23:59:59.000Z

377

Application of self-organizing systems in power systems control  

Science Conference Proceedings (OSTI)

The European electrical transmission network is operated increasingly close to its operational limits due to market integration and increased feed-in by renewable energies. For this reason, innovative solutions for a reliable, secure and efficient network ... Keywords: FACTS, multiagent systems, power flow control, power system control, self-organizing systems, smart grids

Sven C. Müller; Ulf Häger; Christian Rehtanz; Horst F. Wedde

2012-06-01T23:59:59.000Z

378

Design of Control Systems for HVAC Applications  

E-Print Network (OSTI)

The design and application of temperature control systems on a commercial building will bring the question to mind: Should the system be Pneumatic? Should it be Electronic? There is concern as to which system will be more appropriate to a certain project. With cost, maintenance, performance, dependability, and the cost of energy as a main concern of owners, the temperature control system has become an important part of efficient utilization of energy. Application of temperature control systems to heating, ventilating, and air conditioning systems has become an integral part of energy management. The first phase of the program will address the problem of selection of a type of system that will be cost and energy efficient, with a minimum maintenance program. One area to be covered will be the technician and his ability to service the temperature control systems, in addition to information on the schools and technical training. The availability of trained and experienced service technicians creates a major problem for remote towns and communities. Control systems are integrated to energy management systems. Without proper maintenance the energy savings will not perform at their design level. A sub-topic on up-to-date temperature control systems with retrofit needs will he included in the presentation.

Smith, A. L.

1984-01-01T23:59:59.000Z

379

New Light Sources for Tomorrow's Lighting Designs  

E-Print Network (OSTI)

The lighting industry is driven to provide light sources and lighting systems that, when properly applied, will produce a suitable luminous environment in which to perform a specified task. Tasks may include everything from office work, manufacturing and inspection to viewing priceless art objects, selecting the right chair for your living room, and deciding which produce item to select for tonight's dinner. While energy efficiency is a major consideration in any new lighting system design, the sacrifice of lighting quality may cost more in terms of lost productivity and user dissatisfaction than can ever be saved on that monthly energy bill. During the past several years, many new light sources have been developed and introduced. These product introductions have not been limited to anyone lamp type, but instead may be found in filament, fluorescent and high intensity discharge lamp families. Manufacturers of light sources have two basic goals for new product development. These goals are high efficiency lighting and improved color rendering properties. High efficiency lighting may take the form of either increasing lamp efficiency (lumens of light delivered per watt of power consumed) or decreasing lamp size, thus making a more easily controlled light source that places light where it is needed. The manufacturer's second goal is to produce lamps that render colors accurately while maintaining high efficiency. This paper will discuss new introductions in light sources and lighting systems and how they may impact the design of luminous environments of the future.

Krailo, D. A.

1986-06-01T23:59:59.000Z

380

Light-stripe-projection-based target position designation for intelligent parking-assist system  

Science Conference Proceedings (OSTI)

This paper proposes a novel light-stripe-projection-based target position-designation method for an intelligent parking assist system, providing an economical free-space-based target position-designation method for poorly lit indoor parking spaces without ... Keywords: driver-assistant system (DAS), free-space-based target position designation, indoor parking space, light stripe projection (LSP), parking-assist system

Ho Gi Jung; Dong Seok Kim; Jaihie Kim

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Integrated System Of White Led Visible-Light Communication And Power-Line Communication  

E-Print Network (OSTI)

White LEDs offer advantageous properties such as high brightness, reliability, lower power consumption and long lifetime. The biggest potential application for white LEDs will be general illumination and lighting. Indoor wireless optical communication systems employing white LED lighting have been proposed. This system will enable high QoS by the high power from this lighting equipment. But, it is difficult for existing offices communication using existing power-line is proposed. This system is emitted as visible-light from LED lighting according to the transmitted signal waveform without demodulating the signal from the power-line. This system is expected to be applicable from the existing illuminant easily like exchanging electric bulbs. This integrated system will surely have a big impact as a new signal transmission system and its economical effect will be great. The basic performance of this system is analyzed. The actual system is built and its feasibility is shown through experiments.

Toshihiko Komine; Masao Nakagawa

2002-01-01T23:59:59.000Z

382

Robust adaptive control of HVDC systems  

SciTech Connect

The transient performance of an HVDC power system is highly dependent on the parameters of the current/voltage regulators of the converter controls. In order to better accommodate changes in system structure or dc operating conditions, this paper introduces a new adaptive control strategy. The advantages of automatic tuning for continuous fine tuning are combined with predetermined gain scheduling in order to achieve robustness for large disturbances. Examples are provided for a digitally simulated back-to-back dc system.

Reeve, J.; Sultan, M. (Univ. of Waterloo, Ontario (Canada))

1994-07-01T23:59:59.000Z

383

Power control system and method  

SciTech Connect

A power system includes an energy harvesting device, a battery coupled to the energy harvesting device, and a circuit coupled to the energy harvesting device and the battery. The circuit is adapted to deliver power to a load by providing power generated by the energy harvesting device to the load without delivering excess power to the battery and to supplement the power generated by the energy harvesting device with power from the battery if the power generated by the energy harvesting device is insufficient to fully power the load. A method of operating the power system is also provided.

Steigerwald, Robert Louis (Burnt Hills, NY); Anderson, Todd Alan (Niskayuna, NY)

2008-02-19T23:59:59.000Z

384

DOE and Industry Showcase New Control Systems Security Technologies...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electricity Advisory Committee Technology Development Transmission Planning Smart Grid Energy Delivery Systems Cybersecurity Control Systems Security News Archive Control...

385

GENETIC ALGORITHMS CONTROL SYSTEMS ENGINEERING  

E-Print Network (OSTI)

sources. One of related works is an energy-harvesting WSN for a railway monitoring system [6]. In [7.032mW (indoor) to 37mW (direct sunlight) when energy is harvested from solar or 5mW (piezoelectric

Coello, Carlos A. Coello

386

Ambient Control Systems | Open Energy Information  

Open Energy Info (EERE)

Control Systems Control Systems Jump to: navigation, search Logo: Ambient Control Systems Name Ambient Control Systems Address 1810 Gillespie Way Place El Cajon, California Zip 92020 Sector Solar Product Solar energy device with a computerized energy management Website http://www.ambientalert.com/ma Coordinates 32.8193566°, -116.981232° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.8193566,"lon":-116.981232,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

387

Mercury Emissions Control in Wet FGD Systems  

E-Print Network (OSTI)

The Babcock & Wilcox Company (B&W) and McDermott Technology, Inc. (MTI) have had a continuing program over the past decade for characterizing and optimizing mercury control in flue gas desulfurization (FGD) systems. These efforts have led to the characterization of mercury emissions control at two utility installations and full-scale demonstration (55 MW and 1300 MW) of the effect of a mercury control performance enhancement additive for wet FGD systems. This paper presents the results of the mercury emissions control testing conducted at these two sites. The performance is related to EPA Information Collection Request (ICR) data from an FGD system supplier’s perspective, highlighting the need to consider the effects of system design and operation when evaluating mercury emissions control performance.

Paul S. Nolan; Babcock Wilcox; Kevin E. Redinger; Babcock Wilcox; Gerald T. Amrhein; Gregory A. Kudlac

2002-01-01T23:59:59.000Z

388

Lighting Group: Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

Overview Overview Overview of the Lighting Research Group The Lighting Research Group at Lawrence Berkeley National Laboratory performs research aimed at improving the energy efficiency of lighting systems in buildings and homes, throughout the State of California and across the Nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research in the Lighting Group falls into three main areas: Sources and Ballasts, Light Distribution Systems and Controls and Communications. Click on a link below for more information about each of these research areas. Sources and Ballasts investigates next generation light sources, such as

389

Preliminary Results on Luminaire Designs for Hybrid Solar Lighting Systems  

DOE Green Energy (OSTI)

We report on the design of two hybrid lighting luminaires that blend light from a fiber optic end-emitted solar source with electric T8 fluorescent lamps. Both designs involve the retrofit of a commercially-available recessed fluorescent luminaire with minimal reductions in the original luminaire's optical efficiency. Two methods for high-angle dispersion of fiber optic end-emitted solar light are described and the resulting spatial intensity distributions, simulated using ZEMAX, are compared with standard cylindrical fluorescent tubes. Differences in spatial intensity distribution are qualitatively characterized and potential design improvements discussed.

Earl, D.D.

2001-06-15T23:59:59.000Z

390

Electric Boosting System for Light Truck/SUV Application  

DOE Green Energy (OSTI)

Turbo diesel engine use in passenger cars in Europe has resulted in 30-50% improvement in fuel economy. Diesel engine application is particularly suitable for US because of vehicle size and duty cycle patterns. Adopting this technology for use in the US presents two issues--emissions and driveability. Emissions reduction technology is being well addressed with advanced turbocharging, fuel injection and catalytic aftertreatment systems. One way to address driveability is to eliminate turbo lag and increase low speed torque. Electrically assisted turbocharging concepts incorporated in e-TurboTM designs do both. The purpose of this project is to design and develop an electrically assisted turbocharger, e-TurboTM, for diesel engine use in the US. In this report, early design and development of electrical assist technology is described together with issues and potential benefits. In this early phase a mathematical model was developed and verified. The model was used in a sensitivity study. The results of the sensitivity study together with the design and test of first generation hardware was fed into second generation designs. In order to fully realize the benefits of electrical assist technology it was necessary to expand the scope of work to include technology on the compressor side as well as electronic controls concepts. The results of the expanded scope of work are also reported here. In the first instance, designs and hardware were developed for a small engine to quantify and demonstrate benefits. The turbo size was such that it could be applied in a bi-turbo configuration to an SUV sized V engine. Mathematical simulation was used to quantify the possible benefits in an SUV application. It is shown that low speed torque can be increased to get the high performance expected in US, automatic transmission vehicles. It is also shown that e-TurboTM can be used to generate modest amounts of electrical power and supplement the alternator under most load-speed conditions. It is shown that a single (large) e-TurboTM consumes slightly less electrical power for the same steady state torque shaping than a bi-Turbo configuration. However, the transient response of a bi-Turbo configuration in slightly better. It was shown that in order to make full use of additional capabilities of e-TurboTM wide compressor flow range is required. Variable geometry compressor (VGC) technology developed under a separate project was evaluated for incorporation into e-TurboTM designs. It was shown that the combination of these two technologies enables very high torque at low engine speeds. Designs and hardware combining VGC and e-TurboTM are to be developed in a future project. There is concern about high power demands (even though momentary) of e-TurboTM. Reducing the inertia of the turbocharger can reduce power demand and increase battery life. Low inertia turbocharger technology called IBT developed under a separate project was evaluated for synergy with e-TurboTM designs. It was concluded that inertial reduction provided by IBT is very beneficial for e-TurboTM. Designs and hardware combining IBT and e-TurboTM are to be developed in a future project. e-TurboTM provides several additional flexibilities including exhaust gas recirculation (EGR) for emissions reduction with minimum fuel economy penalty and exhaust temperature control for aftertreatment. In integrated multi-parameter control system is needed to realize the full potential of e-TurboTM performance. Honeywell expertise in process control systems involving hundreds of sensors and actuators was applied to demonstrate the potential benefits of multi-parameter, model based control systems.

Steve Arnold, Craig Balis, Pierre Barthelet, Etienne Poix, Tariq Samad, Greg Hampson, S.M. Shahed

2005-06-22T23:59:59.000Z

391

CARS Control Anomaly Recognition System: System Concept, Requirements, and Specifications  

Science Conference Proceedings (OSTI)

This report presents results of an initial study aimed at defining the system concept, principal requirements, and functional specification for a control anomaly recognition system (CARS) software tool. The purpose of the CARS software system is to assist nuclear power plant operators in the early detection of faults and anomalies in plant control systems before they cause reactor scrams or component damage. The diagnostic capability technology of CARS can support other process industries' applications b...

2002-04-12T23:59:59.000Z

392

Passive environmental temperature control system  

DOE Patents (OSTI)

Passive environmental heating and cooling systems are described, which utilize heat pipes to transmit heat to or from a thermal reservoir. In a solar heating system, a heat pipe is utilized to carry heat from a solar heat absorber plate that receives sunlight, through a thermal insulation barrier, to a heat storage wall, with the outer end of the pipe which is in contact with the solar absorber being lower than the inner end. The inclining of the heat pipe assures that the portion of working fluid, such as Freon, which is in a liquid phase will fall by gravity to the outer end of the pipe, thereby assuring diode action that prevents the reverse transfer of heat from the reservoir to the outside on cool nights. In a cooling system, the outer end of the pipe which connects to a heat dissipator, is higher than the inner end that is coupled to a cold reservoir, to allow heat transfer only out of the reservoir to the heat dissipator, and not in the reverse direction.

Corliss, John M. (Columbus, OH); Stickford, George H. (Columbus, OH)

1981-01-01T23:59:59.000Z

393

System and method for controlling microgrid  

DOE Patents (OSTI)

A system for controlling a microgrid includes microgrid assets and a tieline for coupling the microgrid to a bulk grid; and a tieline controller coupled to the tieline. At least one of the microgrid assets comprises a different type of asset than another one of the microgrid assets. The tieline controller is configured for providing tieline control signals to adjust active and reactive power in respective microgrid assets in response to commands from the bulk grid operating entity, microgrid system conditions, bulk grid conditions, or combinations thereof.

Bose, Sumit (Niskayuna, NY); Achilles, Alfredo Sebastian (Bavaria, DE); Liu, Yan (Ballston Lake, NY); Ahmed, Emad Ezzat (Munich, DE); Garces, Luis Jose (Niskayuna, NY)

2011-07-19T23:59:59.000Z

394

Online prediction and control nonlinear stochastic systems  

E-Print Network (OSTI)

temperature in district heat- ing systems. · Prediction of power production from the wind turbines located and their application to prediction and control within district heating systems and for prediction of wind power. Here temperature in district heating systems', Techni- cal Report IMM-REP-2002-23, Informatics and Mathematical

395

Operational Experience with the CEBAF Control System  

SciTech Connect

This paper describes our operational experience with the CEBAF control system. CEBAF is operated using a variety of software packages and custom applications. In the spirit of collaboration and software sharing, the current system utilizes code developed at four major laboratories as well as commercial packages and custom applications. The basis of the CEBAF control system is EPICS (Experimental Physics and Industrial Control System), originally developed at LANL and ANL. The CEBAF accelerator is operated primarily using the common EPICS tools such as the archiver, alarm handler and display manager. In order to supplement the features of EPICS, custom applications have been developed and incorporated into the control system using C, C++, and TCL. Additionally, the CEBAF helium plant is controlled using the CEBAF TACL system which requires communications between the two control systems. CATER, a problem tracking program developed at SLAC, has also been integrated into the operational software. Current plans call for the integration of an on-line logbook developed at APS and the internal development of a down-time logger program. We discuss how these various tools and applications are used operationally, the advantages and disadvantages of the systems and the challenges related to integrating this diverse array of software.

K. White; D. Kehne

1995-10-01T23:59:59.000Z

396

Light Rail System Safety Improvements Using ITS Technologies  

E-Print Network (OSTI)

1975b. * Cox, J. J. Road-Rail Protection Audible WarningInfluencing Safety at Highway-Rail Grade Crossings. NationalWalmsley, D.A (1 992) Light Rail Accidents in Europe and

Chira-chavala, Ted; Coifman, Ben; Empey, Dan; Hansen, Mark; Lechner, Ed; Porter, Chris

1997-01-01T23:59:59.000Z

397

National Synchrotron Light Source: vacuum system for National Synchrotron Light Source  

SciTech Connect

The National Synchrotron Light Source (NSLS), a 24 million dollar project under construction at Brookhaven National Laboratory (BNL), is a research facility dedicated to the production of synchrotron radiation. Synchrotron radiation is that radiation produced by the acceleration of charged particles at near the speed of light. This facility will provide a continuous spectrum of radiation from the vacuum ultraviolet to the hard x-ray range. The radiation will be highly intense, 100% polarized, extremely well collimated and will have a pulsed time structure. The radiation will be produced in two electron storage rings at energies of 700 MeV and 2.5 GeV, respectively. A maximum of one ampere at 2 GeV, or one-half ampere at 2.5 GeV, of electron beam will be stored.

Schuchman, J.C.; Godel, J.B.; Jordan, W.; Oversluizen, T.

1978-01-01T23:59:59.000Z

398

LNG fire and vapor control system technologies  

SciTech Connect

This report provides a review of fire and vapor control practices used in the liquefied natural gas (LNG) industry. Specific objectives of this effort were to summarize the state-of-the-art of LNG fire and vapor control; define representative LNG facilities and their associated fire and vapor control systems; and develop an approach for a quantitative effectiveness evaluation of LNG fire and vapor control systems. In this report a brief summary of LNG physical properties is given. This is followed by a discussion of basic fire and vapor control design philosophy and detailed reviews of fire and vapor control practices. The operating characteristics and typical applications and application limitations of leak detectors, fire detectors, dikes, coatings, closed circuit television, communication systems, dry chemicals, water, high expansion foam, carbon dioxide and halogenated hydrocarbons are described. Summary descriptions of a representative LNG peakshaving facility and import terminal are included in this report together with typical fire and vapor control systems and their locations in these types of facilities. This state-of-the-art review identifies large differences in the application of fire and vapor control systems throughout the LNG industry.

Konzek, G.J.; Yasutake, K.M.; Franklin, A.L.

1982-06-01T23:59:59.000Z

399

Two-atom system as a nano-antenna for mode switching and light routing  

E-Print Network (OSTI)

We determine how a system composed of two nonidentical two-level atoms with different resonance frequencies and different damping rates could work as a nano-antenna for controlled mode switching and light routing. We calculate the angular distribution of the emitted field detected in a far-field zone of the system including the direct interatomic interactions and arbitrary linear dimensions of the system. The calculation is carried out in terms of the symmetric and antisymmetric modes of the two atom system. We find that as long as the atoms are identical, the emission cannot be switched between the symmetric and antisymmetric modes. The switching may occur when the atoms are non-identical and the emission can then be routed to different modes by changing the relative ratio of the atomic frequencies, or damping rates or by a proper tuning of the laser frequency to the atomic resonance frequencies. It is shown that in the case of atoms of different resonance frequencies but equal damping rates, the light routing is independent of the frequency of the driving laser field. It depends only on the sign of the detuning between the atomic resonance frequencies. In the case of atoms of different damping rates, the emission can be switched between different modes by changing the laser frequency from the blue to red detuned from the atomic resonance. The effect of the interatomic interactions is also considered and it is found that in the case of unequal resonance frequencies of the atoms, the interactions slightly modify the visibility of the intensity pattern. The case of unequal damping rates of the atoms is affected rather more drastically, the light routing becoming asymmetric under the dipole-dipole interaction with the enhanced intensities of the modes turned towards the atom of smaller damping rate.

Vassilis E. Lembessis; Anwar Al Rsheed; Omar M. Aldossary; Zbigniew Ficek

2013-09-16T23:59:59.000Z

400

Early warning system for cascading effect control in energy control systems  

Science Conference Proceedings (OSTI)

A way of controlling a cascading effect caused by a failure or a threat in a critical system is using intelligent mechanisms capable of predicting anomalous behaviours and also capable of reacting against them in advance. These mechanisms are known as ... Keywords: SCADA systems, cascading effect, early warning system, energy control systems, forensic techniques, wireless sensor network

Cristina Alcaraz; Angel Balastegui; Javier Lopez

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A high-efficiency indirect lighting system utilizing the solar 1000 sulfur lamp  

SciTech Connect

High-lumen light sources represent unique challenges and opportunities for the design of practical and efficient interior lighting systems. High-output sources require a means of large-scale distribution and avoidance of high-luminance glare while providing efficient delivery. An indirect lighting system has been developed for use with a 1,000 Watt sulfur lamp that efficiently utilizes the high-output source to provide quality interior lighting. This paper briefly describes the design and initial testing of this new system.

Siminovitch, M.; Gould, C.; Page, E.

1997-06-01T23:59:59.000Z

402

Vehicle Technologies Office: Thermal Control and System Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermal Control and System Integration The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the...

403

Control Systems Cyber Security Standards Support Activities  

Science Conference Proceedings (OSTI)

The Department of Homeland Security’s Control Systems Security Program (CSSP) is working with industry to secure critical infrastructure sectors from cyber intrusions that could compromise control systems. This document describes CSSP’s current activities with industry organizations in developing cyber security standards for control systems. In addition, it summarizes the standards work being conducted by organizations within the sector and provides a brief listing of sector meetings and conferences that might be of interest for each sector. Control systems cyber security standards are part of a rapidly changing environment. The participation of CSSP in the development effort for these standards has provided consistency in the technical content of the standards while ensuring that information developed by CSSP is included.

Robert Evans

2009-01-01T23:59:59.000Z

404

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

l U CONTROL SYSTEM FOR SOLAR HEATING AND COOLING* M.Wahlig,be capable of operating solar heating and cooling systemsand now transferred to ERDA, on solar heating and cooling of

Dols, C.

2010-01-01T23:59:59.000Z

405

Install an Automatic Blowdown Control System  

SciTech Connect

This revised ITP steam tip sheet on installing automatic blowdown controls provide how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

406

Steam Turbine Hydraulic Control system Maintenance Guide  

Science Conference Proceedings (OSTI)

Steam turbine hydraulic control system maintenance problems have been a significant factor in plant power reductions, shutdowns, and lost generation. This guide provides recommendations to improve the reliability of the hydraulic components and fluid.

1996-12-31T23:59:59.000Z

407

Variable emissivity laser thermal control system  

DOE Patents (OSTI)

A laser thermal control system for a metal vapor laser maintains the wall mperature of the laser at a desired level by changing the effective emissivity of the water cooling jacket. This capability increases the overall efficiency of the laser.

Milner, Joseph R. (Livermore, CA)

1994-01-01T23:59:59.000Z

408

Occupant Response to Window Control Signaling Systems  

E-Print Network (OSTI)

A.  (2002).  Operable windows and  HVAC systems.  HPAC Simulation of the effects of window opening and heating Dear, R.  (2004).  Operable Windows, Personal Control and 

Ackerly, Katherine

2012-01-01T23:59:59.000Z

409

Time-optimal Control of Spin Systems  

E-Print Network (OSTI)

The paper discusses various aspects of time-optimal control of quantum spin systems, modelled as right-invariant systems on a compact Lie group G. The main results are the reduction of such a system to an equivalent system on a homogeneous space G/H, and the explicit determination of optimal trajectories on G/H in the case where G/H is a Riemannian symmetric space. These results are mainly obtained by using methods from Lie theory and geometric control.

Jan Swoboda

2006-01-19T23:59:59.000Z

410

Battery monitoring and charger control system  

SciTech Connect

A battery cell controlled charging system, consisting of a display unit, battery cell probes, a battery charger and circuitry for controlling the charger, monitors the specific gravity, electrolyte level and temperature control of each cell in a multi-cell lead-acid battery and uses the information to automatically charge the battery when a cell or cells become out of specification while restricting overcharging which is damaging to cells.

Barry, G.H.; Dahl, E.A.

1983-06-14T23:59:59.000Z

411

Randomized control of open quantum systems  

E-Print Network (OSTI)

The problem of open-loop dynamical control of generic open quantum systems is addressed. In particular, I focus on the task of effectively switching off environmental couplings responsible for unwanted decoherence and dissipation effects. After revisiting the standard framework for dynamical decoupling via deterministic controls, I describe a different approach whereby the controller intentionally acquires a random component. An explicit error bound on worst-case performance of stochastic decoupling is presented.

Lorenza Viola

2006-01-16T23:59:59.000Z

412

Autonomous robotic weed control systems: A review  

Science Conference Proceedings (OSTI)

Autonomous robotic weed control systems hold promise toward the automation of one of agriculture's few remaining unmechanized and drudging tasks, hand weed control. Robotic technology may also provide a means of reducing agriculture's current dependency ... Keywords: Geospatial technology, Machine vision, Pest management, Precision agriculture, Robot, Weed recognition

D. C. Slaughter; D. K. Giles; D. Downey

2008-04-01T23:59:59.000Z

413

Advanced control and information systems `97  

Science Conference Proceedings (OSTI)

Data are presented on advanced control and information systems, describing specific application, control strategy, economics, commercial installations, and licensor. Uses include alkylation, amine treating, catalytic reforming, cryogenic separation, catalytic cracking, hydrocracking, hydrogen production, LNG separation, lube oils, olefins, plant scheduling, polymers, refineries, steam reforming, and utilities.

NONE

1997-09-01T23:59:59.000Z

414

Efficiency of energy transfer in a light-harvesting system under quantum coherence  

E-Print Network (OSTI)

We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center as it is found in natural photosynthetic systems. By using a quantum jump approach, we demonstrate that in the presence of quantum coherent energy transfer and energetic disorder, the efficiency of excitation transfer from the antenna to the reaction center depends intimately on the quantum superposition properties of the initial state. In particular, we find that efficiency is sensitive to symmetric and asymmetric superposition of states in the basis of localized excitations, indicating that initial state properties can be used as a efficiency control parameter at low temperatures.

Alexandra Olaya-Castro; Chiu Fan Lee; Francesca Fassioli Olsen; Neil F. Johnson

2007-08-08T23:59:59.000Z

415

DOWNHOLE VIBRATION MONITORING & CONTROL SYSTEM  

SciTech Connect

The objective of this program is to develop a system to both monitor the vibration of a bottomhole assembly, and to adjust the properties of an active damper in response to these measured vibrations. Phase I of this program entails modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype. The project continues to advance, but is behind the revised (14-month) schedule. Tasks 1-3 (Modeling, Specification and Design) are all essentially complete. The test bench for the Test and Evaluation (Tasks 4 & 5) and the laboratory prototype were constructed by the end of the period. During assembly, however, several of the key subassemblies became galled together, and had to be cut apart. These parts are being remachined with harder surfaces to prevent recurrence of this problem. One key component, the MR damper mandrel, has been redesigned into a three-piece assembly which will facilitate assembly and reduce the cost of replacement of worn components. The remade parts will be delivered by April 19, and the prototype assembled. Testing will begin during the first week of May and is anticipated to be completed before the revised end date for Phase I, May 31, 2004.

Martin E. Cobern

2004-04-17T23:59:59.000Z

416

Fiber-optic, anti-cycling, high pressure sodium street light control. Final technical progress report  

Science Conference Proceedings (OSTI)

This is the Final Technical Progress Report on a project to develop and market a Fiber-Optic Anti-Cycling High Pressure Sodium Street Light Control. The field test units are now being made with a single vertical PC board design and contains a computer-on-a-chip or PROM IC to take the place of the majority of the components previously contained on the upper logic board. This will reduce the final costs of the unit when it is in production and increase the control`s flexibility. The authors have finished the soft tooling and have made the 400 plastic cases for the field test units. The new configuration of the cases entails a simplified design of the control shell which will have the lenses cast in place. The shell and base plastics are now finished and in final assembly awaiting the completion of the PC boards.

NONE

1995-05-01T23:59:59.000Z

417

LED lamp color control system and method  

DOE Patents (OSTI)

An LED lamp color control system and method including an LED lamp having an LED controller 58; and a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 determines whether the LED source 80 is in a feedback controllable range, stores measured optical flux for the LED source 80 when the LED source 80 is in the feedback controllable range, and bypasses storing the measured optical flux when the LED source 80 is not in the feedback controllable range.

Gaines, James; Clauberg, Bernd; Van Erp, Josephus A.M.

2013-02-05T23:59:59.000Z

418

Using Building Control System for Commissioning  

E-Print Network (OSTI)

This paper summarizes the different approaches developed during Annex 40 (research project of International Energy Agency - Energy Conservation in Buildings & Community Systems ) for carrying out commissioning activities using the control system. During our work we have found that control systems in buildings have the potential to greatly improve the commissioning process. In particular, control systems can be used to carry out automated testing on the energy systems in a building in a systematic way. Technologies for carrying out automated commissioning are still in their infancy and very few tools are available for practitioners to use. However, our work has demonstrated that tools can be built using existing infrastructure at relatively low cost. In many cases, tools are software programs that can be implemented on most microprocessor-based platforms.

Vaezi-Nejad, H.; Salsbury, T.; Choiniere, D.

2004-01-01T23:59:59.000Z

419

The impact of passive safety systems on desirability of advanced light water reactors  

E-Print Network (OSTI)

This work investigates whether the advanced light water reactor designs with passive safety systems are more desirable than advanced reactor designs with active safety systems from the point of view of uncertainty in the ...

Eul, Ryan C

2006-01-01T23:59:59.000Z

420

Biotelemetry system for Epilepsy Seizure Control  

SciTech Connect

The Biotelemetry System for Epilepsy Seizure Control Project developed and tested an automated telemetry system for use in an epileptic seizure prevention device that precisely controls localized brain temperature. This project was a result of a Department of Energy (DOE) Global Initiatives for Proliferation Prevention (GIPP) grant to the Kansas City Plant (KCP), Argonne National Laboratory (ANL), and Pacific Northwest National Laboratory (PNNL) to partner with Flint Hills Scientific, LLC, Lawrence, KS and Biophysical Laboratory Ltd (BIOFIL), Sarov, Russia to develop a method to help control epileptic seizures.

Smith, LaCurtise; Bohnert, George W.

2009-07-02T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Evaluations of nutrient diffusing substrates and the primary importance of light in controlling periphyton  

E-Print Network (OSTI)

Eutrophication is an increasingly recognized threat to the health of streams and rivers in the United States. This thesis presents two studies aimed at increasing the utility of periphyton analysis as a tool for water resource managers to address eutrophication. In the first study, artificial channels were used to investigate the response of periphyton to different nutrient delivery mechanisms. In two channels, nutrients were delivered via diffusion to periphyton growth surfaces using modified Matlock Periphytometers. In two additional channels, nutrients were delivered by dosing water in the channel. The data showed that nutrient delivery via diffusion elicits a significantly greater periphyton response. The use of diffusing substrates for periphyton studies remains a viable tool for some objectives, but results should be extrapolated to natural conditions with caution. In the second study, modified Matlock Periphytometers and inexpensive light meters were used to investigate the relationship between periphyton growth and light availability in two fourth-order Texas streams. The data indicate that light availability explains 91.9 percent of the variability of observed periphyton growth under control conditions, and 99.7 percent under nutrient-enriched conditions. The strong correlation suggests that efforts to address eutrophication should recognize the importance of riparian shade. Equations to predict chlorophyll-a as a function of relative light intensity are also presented.

Murawski, Matthew Thomas

2001-01-01T23:59:59.000Z

422

Alarm system for a nuclear control complex  

DOE Patents (OSTI)

An advanced control room complex for a nuclear power plant, including a discrete indicator and alarm system (72) which is nuclear qualified for rapid response to changes in plant parameters and a component control system (64) which together provide a discrete monitoring and control capability at a panel (14-22, 26, 28) in the control room (10). A separate data processing system (70), which need not be nuclear qualified, provides integrated and overview information to the control room and to each panel, through CRTs (84) and a large, overhead integrated process status overview board (24). The discrete indicator and alarm system (72) and the data processing system (70) receive inputs from common plant sensors and validate the sensor outputs to arrive at a representative value of the parameter for use by the operator during both normal and accident conditions, thereby avoiding the need for him to assimilate data from each sensor individually. The integrated process status board (24) is at the apex of an information hierarchy that extends through four levels and provides access at each panel to the full display hierarchy. The control room panels are preferably of a modular construction, permitting the definition of inputs and outputs, the man machine interface, and the plant specific algorithms, to proceed in parallel with the fabrication of the panels, the installation of the equipment and the generic testing thereof.

Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)

1994-01-01T23:59:59.000Z

423

Secure Control Systems for the Energy Sector  

Science Conference Proceedings (OSTI)

Schweitzer Engineering Laboratories (SEL) will conduct the Hallmark Project to address the need to reduce the risk of energy disruptions because of cyber incidents on control systems. The goals is to develop solutions that can be both applied to existing control systems and designed into new control systems to add the security measures needed to mitigate energy network vulnerabilities. The scope of the Hallmark Project contains four primary elements: 1. Technology transfer of the Secure Supervisory Control and Data Acquisition (SCADA) Communications Protocol (SSCP) from Pacific Northwest National Laboratories (PNNL) to Schweitzer Engineering Laboratories (SEL). The project shall use this technology to develop a Federal Information Processing Standard (FIPS) 140-2 compliant original equipment manufacturer (OEM) module to be called a Cryptographic Daughter Card (CDC) with the ability to directly connect to any PC enabling that computer to securely communicate across serial to field devices. Validate the OEM capabilities with another vendor. 2. Development of a Link Authenticator Module (LAM) using the FIPS 140-2 validated Secure SCADA Communications Protocol (SSCP) CDC module with a central management software kit. 3. Validation of the CDC and Link Authenticator modules via laboratory and field tests. 4. Creation of documents that record the impact of the Link Authenticator to the operators of control systems and on the control system itself. The information in the documents can assist others with technology deployment and maintenance.

Smith, Rhett; Campbell, Jack; Hadley, Mark

2012-03-31T23:59:59.000Z

424

Wireless Demand Response Controls for HVAC Systems  

Science Conference Proceedings (OSTI)

The objectives of this scoping study were to develop and test control software and wireless hardware that could enable closed-loop, zone-temperature-based demand response in buildings that have either pneumatic controls or legacy digital controls that cannot be used as part of a demand response automation system. We designed a SOAP client that is compatible with the Demand Response Automation Server (DRAS) being used by the IOUs in California for their CPP program, design the DR control software, investigated the use of cellular routers for connecting to the DRAS, and tested the wireless DR system with an emulator running a calibrated model of a working building. The results show that the wireless DR system can shed approximately 1.5 Watts per design CFM on the design day in a hot, inland climate in California while keeping temperatures within the limits of ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy.

Federspiel, Clifford

2009-06-30T23:59:59.000Z

425

Waste receiving and processing plant control system; system design description  

Science Conference Proceedings (OSTI)

The Plant Control System (PCS) is a heterogeneous computer system composed of numerous sub-systems. The PCS represents every major computer system that is used to support operation of the Waste Receiving and Processing (WRAP) facility. This document, the System Design Description (PCS SDD), includes several chapters and appendices. Each chapter is devoted to a separate PCS sub-system. Typically, each chapter includes an overview description of the system, a list of associated documents related to operation of that system, and a detailed description of relevant system features. Each appendice provides configuration information for selected PCS sub-systems. The appendices are designed as separate sections to assist in maintaining this document due to frequent changes in system configurations. This document is intended to serve as the primary reference for configuration of PCS computer systems. The use of this document is further described in the WRAP System Configuration Management Plan, WMH-350, Section 4.1.

LANE, M.P.

1999-02-24T23:59:59.000Z

426

Model-driven design and implementation of discrete event control for a machine tool control system  

E-Print Network (OSTI)

Symposium on Computer-Aided Control System Design. [7] E. M.of machine tool control system Mode Control Supervisor (MCS)of a discrete event control system depends entirely on the

Liu, Y.; Li, W.; Yamazaki, K.; Fujishima, M.

2007-01-01T23:59:59.000Z

427

Cylindrical Induction Melter Modicon Control System  

SciTech Connect

In the last several years an extensive R{ampersand}D program has been underway to develop a vitrification system to stabilize Americium (Am) and Curium (Cm) inventories at SRS. This report documents the Modicon control system designed for the 3 inch Cylindrical Induction Melter (CIM).

Weeks, G.E. [Westinghouse Savannah River Company, AIKEN, SC (United States)

1998-04-01T23:59:59.000Z

428

Comparison of Routable Control System Security Approaches  

SciTech Connect

This document is an supplement to the 'Secure and Efficient Routable Control Systems.' It addressed security in routable control system communication. The control system environment that monitors and manages the power grid historically has utilized serial communication mechanisms. Leased-line serial communication environments operating at 1200 to 9600 baud rates are common. However, recent trends show that communication media such as fiber, optical carrier 3 (OC-3) speeds, mesh-based high-speed wireless, and the Internet are becoming the media of choice. In addition, a dichotomy has developed between the electrical transmission and distribution environments, with more modern communication infrastructures deployed by transmission utilities. The preceding diagram represents a typical control system. The Communication Links cloud supports all of the communication mechanisms a utility might deploy between the control center and devices in the field. Current methodologies used for security implementations are primarily led by single vendors or standards bodies. However, these entities tend to focus on individual protocols. The result is an environment that contains a mixture of security solutions that may only address some communication protocols at an increasing operational burden for the utility. A single approach is needed that meets operational requirements, is simple to operate, and provides the necessary level of security for all control system communication. The solution should be application independent (e.g., Distributed Network Protocol/Internet Protocol [DNP/IP], International Electrotechnical Commission [IEC] C37.118, Object Linking and Embedding for Process Control [OPC], etc.) and focus on the transport layer. In an ideal setting, a well-designed suite of standards for control system communication will be used for vendor implementation and compliance testing. An expected outcome of this effort is an international standard.

Edgar, Thomas W.; Hadley, Mark D.; Carroll, Thomas E.; Manz, David O.; Winn, Jennifer D.

2011-06-01T23:59:59.000Z

429

Periodic optimal control for biomass productivity maximization in a photobioreactor using natural light  

E-Print Network (OSTI)

We address the question of optimization of the microalgal biomass long term productivity in the framework of production in photobioreactors under the influence of day/night cycles. For that, we propose a simple bioreactor model accounting for light attenuation in the reactor due to biomass density and obtain the control law that optimizes productivity over a single day through the application of Pontryagin's maximum principle, with the dilution rate being the main control. An important constraint on the obtained solution is that the biomass in the reactor should be at the same level at the beginning and at the end of the day so that the same control can be applied everyday and optimizes some form of long term productivity. Several scenarios are possible depending on the microalgae's strain parameters and the maximal admissible value of the dilution rate: bang-bang or bang-singular-bang control or, if the growth rate of the algae is very strong in the presence of light, constant maximal dilution. A bifurcation...

Grognard, Frédéric; Bernard, Olivier

2012-01-01T23:59:59.000Z

430

Stochastic Control Analysis for Biochemical Reaction Systems  

E-Print Network (OSTI)

In this paper, we investigate how stochastic reaction processes are affected by external perturbations. We describe an extension of the deterministic metabolic control analysis (MCA) to the stochastic regime. We introduce stochastic sensitivities for mean and covariance values of reactant concentrations and reaction fluxes and show that there exist MCA-like summation theorems among these sensitivities. The summation theorems for flux variances are shown to depend on the size of the measurement time window ($\\epsilon$), within which reaction events are counted for measuring a single flux. The degree of the $\\epsilon$-dependency can become significant for processes involving multi-time-scale dynamics and is estimated by introducing a new measure of time scale separation. This $\\epsilon$-dependency is shown to be closely related to the power-law scaling observed in flux fluctuations in various complex networks. We propose a systematic way to control fluctuations of reactant concentrations while minimizing changes in mean concentration levels. Such orthogonal control is obtained by introducing a control vector indicating the strength and direction of parameter perturbations leading to a sensitive control. We also propose a possible implication in the control of flux fluctuation: The control distribution for flux fluctuations changes with the measurement time window size, $\\epsilon$. When a control engineer applies a specific control operation on a reaction system, the system can respond contrary to what is expected, depending on the time window size $\\epsilon$.

Kyung Hyuk Kim; Herbert M. Sauro

2009-04-20T23:59:59.000Z

431

Lighting fundamentals handbook: Lighting fundamentals and principles for utility personnel  

SciTech Connect

Lighting accounts for approximately 30% of overall electricity use and demand in commercial buildings. This handbook for utility personnel provides a source of basic information on lighting principles, lighting equipment, and other considerations related to lighting design. The handbook is divided into three parts. Part One, Physics of Light, has chapters on light, vision, optics, and photometry. Part Two, Lighting Equipment and Technology, focuses on lamps, luminaires, and lighting controls. Part Three, Lighting Design Decisions, deals with the manner in which lighting design decisions are made and reviews relevant methods and issues. These include the quantity and quality of light needed for visual tasks, calculation methods for verifying that lighting needs are satisfied, lighting economics and methods for evaluating investments in efficient lighting systems, and miscellaneous design issues including energy codes, power quality, photobiology, and disposal of lighting equipment. The handbook contains a discussion of the role of the utility in promoting the use of energy-efficient lighting. The handbook also includes a lighting glossary and a list of references for additional information. This convenient and comprehensive handbook is designed to enable utility lighting personnel to assist their customers in developing high-quality, energy-efficient lighting systems. The handbook is not intended to be an up-to-date reference on lighting products and equipment.

Eley, C.; Tolen, T. (Eley (Charles) Associates, San Francisco, CA (United States)); Benya, J.R. (Luminae Souter Lighting Design, San Francisco, CA (United States))

1992-12-01T23:59:59.000Z

432

Stabilization of High Efficiency CdTe Photovoltaic Modules in Controlled Indoor Light Soaking  

Science Conference Proceedings (OSTI)

The performance and stabilization of large-area, high-efficiency 9%, CdTe photovoltaic (PV) modules maintained under controlled light-soaking nominally at 800 Watts/m2 irradiance and 65C module temperature are investigated. Degradation of module performance occurs predominantly in the first few hundred hours of exposure under these conditions; these symptoms included losses in fill factor (FF), open-circuit voltage (Voc), and short-circuit current (Isc), which amount to between 7% and 15% total loss in performance. Higher stabilized performance was achieved with lower copper content in the back contact. Transient effects in module Voc and Isc were observed, suggesting partial annealing thereof when stored under low-light levels. Performance changes are analyzed, aided by monitoring the current-voltage characteristics in situ during exposure.

del Cueto, J. A.; Pruett, J.; Cunningham, D.

2003-05-01T23:59:59.000Z

433

Chapter 14: Wind Turbine Control Systems  

DOE Green Energy (OSTI)

Wind turbines are complex, nonlinear, dynamic systems forced by gravity, stochastic wind disturbances, and gravitational, centrifugal, and gyroscopic loads. The aerodynamic behavior of wind turbines is nonlinear, unsteady, and complex. Turbine rotors are subjected to a complicated three-dimensional turbulent wind inflow field that drives fatigue loading. Wind turbine modeling is also complex and challenging. Accurate models must contain many degrees of freedom (DOF) to capture the most important dynamic effects. The rotation of the rotor adds complexity to the dynamics modeling. Designs of control algorithms for wind turbines must account for these complexities. Algorithms must capture the most important turbine dynamics without being too complex and unwieldy. Off-the-shelf commercial soft ware is seldom adequate for wind turbine dynamics modeling. Instead, specialized dynamic simulation codes are usually required to model all the important nonlinear effects. As illustrated in Figure 14-1, a wind turbine control system consists of sensors, actuators and a system that ties these elements together. A hardware or software system processes input signals from the sensors and generates output signals for actuators. The main goal of the controller is to modify the operating states of the turbine to maintain safe turbine operation, maximize power, mitigate damaging fatigue loads, and detect fault conditions. A supervisory control system starts and stops the machine, yaws the turbine when there is a significant yaw misalignment, detects fault conditions, and performs emergency shut-downs. Other parts of the controller are intended to maximize power and reduce loads during normal turbine operation.

Wright, A. D.

2009-01-01T23:59:59.000Z

434

Control system for a vertical axis windmill  

DOE Patents (OSTI)

A vertical axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90.degree. and 270.degree. to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

Brulle, Robert V. (St. Louis County, MO)

1983-10-18T23:59:59.000Z

435

Minimizing lighting power density in office rooms equipped with Anidolic Daylighting Systems  

Science Conference Proceedings (OSTI)

Electric lighting is responsible for up to one third of an office building's electricity needs. Making daylight more available in office buildings can not only contribute to significant energy savings but also enhance the occupants' performance and wellbeing. Anidolic Daylighting Systems (ADS) are one type of very effective facade-integrated daylighting systems. All south-facing office rooms within the LESO solar experimental building in Lausanne (Switzerland) are equipped with a given type of ADS. A recent study has shown that these offices' occupants are highly satisfied with their lighting environment. The most energy-efficient south-facing offices have a lighting power density of less than 5W/m{sup 2}. The lighting situation within these ''best practice''-offices has been assessed using the lighting simulation software RELUX Vision. Because this lighting situation is very much appreciated by the occupants, it was used as a starting point for developing even more energy-efficient office lighting designs. Two new lighting designs, leading to lighting power densities of 3.9W/m{sup 2} and 3W/m{sup 2}, respectively, have been suggested and simulated with RELUX Vision. Simulation results have shown that the expected performances of these new systems are comparable to that of the current lighting installation within the ''best practice''-offices or even better. These simulation results have been confirmed during experiments on 20 human subjects in a test office room recently set up within the LESO building. This article gives engineers, architects and light planers valuable information and ideas on how to design energy-efficient and comfortable electric lighting systems in office rooms with abundant access to daylight. (author)

Linhart, Friedrich; Scartezzini, Jean-Louis [Solar Energy and Building Physics Laboratory (LESO-PB), Ecole Polytechnique Federale de Lausanne (EPFL), 1015 Lausanne (Switzerland)

2010-04-15T23:59:59.000Z

436

Zone control system for energy conservation  

SciTech Connect

A zone control system adapted to control temperatures in a building is described having a temperature modifying plant to modify the temperature of a heat exchange medium, circulator means to circulate the medium, and flow control means to regulate the flow of the medium. The system includes zone thermostats with one thermostat per controlled zone, and with each thermostat including temperature responsive means and heat anticipator means to modify the temperature of the temperature responsive means; at least one of the flow control means per controlled zone, and each of the flow control means being capable of energizing the circulator means when the flow control means operates to permit circulation of the heat exchange medium; each zone thermostat including on-off timer means having normally open switch means, and further including intermediate on timer means having normally open switch means; first zone control circuit means including a temperature responsive means of the first thermostat, a heat anticipator means of the first thermostat, and circuit means with normally closed switch means capable of energizing a first flow control means to an open position upon the first thermostat calling for operation of the temperature modifying plant. The timer means of the first thermostat is actuated by the first thermostat calling for operation of the temperature modifying plant; a first of the on-off timer means operating its switch means to an on state after a fixed time interval to latch the first flow control means into an open condition; a first of the intermediate on timer means operating its switch means to an on state after a second fixed time interval to energize the modifying plant and complete a circuit to a secondary anticipation heater of a second zone thermostat capable of adding heat to the second zone thermostat; and the first on-off timer means maintaining its switch means closed.

Nelson, L.W.

1986-04-15T23:59:59.000Z

437

Actively controlled vibration welding system and method  

DOE Patents (OSTI)

A vibration welding system includes a controller, welding horn, an active material element, and anvil assembly. The assembly may include an anvil body connected to a back plate and support member. The element, e.g., a piezoelectric stack or shape memory alloy, is positioned with respect to the assembly. The horn vibrates in a desirable first direction to form a weld on a work piece. The element controls any vibrations in a second direction by applying calibrated response to the anvil body in the second direction. A method for controlling undesirable vibrations in the system includes positioning the element with respect to the anvil assembly, connecting the anvil body to the support member through the back plate, vibrating the horn in a desirable first direction, and transmitting an input signal to the element to control vibration in an undesirable second direction.

Cai, Wayne W.; Kang, Bongsu; Tan, Chin-An

2013-04-02T23:59:59.000Z

438

Automatic monitoring helps reduce lighting costs  

SciTech Connect

A Benton, Arkansas utility is using a dimmable ballast system to curb high-intensity-discharge (HID) lighting costs. The system also incorpoates a monitoring control system. This control automatically maintains minimum illumination levels.

1978-11-01T23:59:59.000Z

439

Alexandria Light and Power - Residential Energy Efficiency Rebate...  

Open Energy Info (EERE)

Technologies Central Air conditioners, Clothes Washers, Dehumidifiers, Dishwasher, Energy Mgmt. SystemsBuilding Controls, Heat pumps, Lighting, Programmable Thermostats,...

440

Fuzzy adaptive control for the actuators position control and modeling of an expert system  

Science Conference Proceedings (OSTI)

In this paper, a heating, ventilating and air-conditioning (HVAC) system was designed and two different damper gap rates (actuators position) of the HVAC system were controlled by a conventional PID (proportional-integral-derivative) controller. One ... Keywords: Actuator position control, Air flow control, An expert system, Fuzzy adaptive control (FAC), Humidity control, Modeling, PID control, Software architecture

Servet Soyguder; Hasan Alli

2010-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "lighting control systems" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

INTEGRATED CONTROL OF NEXT GENERATION POWER SYSTEM  

Science Conference Proceedings (OSTI)

Control methodologies provide the necessary data acquisition, analysis and corrective actions needed to maintain the state of an electric power system within acceptable operating limits. These methods are primarily software-based algorithms that are nonfunctional unless properly integrated with system data and the appropriate control devices. Components of the control of power systems today include protective relays, supervisory control and data acquisition (SCADA), distribution automation (DA), feeder automation, software agents, sensors, control devices and communications. Necessary corrective actions are still accomplished using large electromechanical devices such as vacuum, oil and gas-insulated breakers, capacitor banks, regulators, transformer tap changers, reclosers, generators, and more recently FACTS (flexible AC transmission system) devices. The recent evolution of multi-agent system (MAS) technologies has been reviewed and effort made to integrate MAS into next generation power systems. A MAS can be defined as ��a loosely-coupled network of problem solvers that work together to solve problems that are beyond their individual capabilities��. These problem solvers, often called agents, are autonomous and may be heterogeneous in nature. This project has shown that a MAS has significant advantages over a single, monolithic, centralized problem solver for next generation power systems. Various communication media are being used in the electric power system today, including copper, optical fiber and power line carrier (PLC) as well as wireless technologies. These technologies have enabled the deployment of substation automation (SA) at many facilities. Recently, carrier and wireless technologies have been developed and demonstrated on a pilot basis. Hence, efforts have been made by this project to penetrate these communication technologies as an infrastructure for next generation power systems. This project has thus pursued efforts to use specific MAS methods as well as pertinent communications protocols to imbed and assess such technologies in a real electric power distribution system, specifically the Circuit of the Future (CoF) developed by Southern California Edison (SCE). By modeling the behavior and communication for the components of a MAS, the operation and control of the power distribution circuit have been enhanced. The use of MAS to model and integrate a power distribution circuit offers a significantly different approach to the design of next generation power systems. For example, ways to control a power distribution circuit that includes a micro-grid while considering the impacts of thermal constraints, and integrating voltage control and renewable energy sources on the main power system have been pursued. Both computer simulations and laboratory testbeds have been used to demonstrate such technologies in electric power distribution systems. An economic assessment of MAS in electric power systems was also performed during this project. A report on the economic feasibility of MAS for electric power systems was prepared, and particularly discusses the feasibility of incorporating MAS in transmission and distribution (T&D) systems. Also, the commercial viability of deploying MAS in T&D systems has been assessed by developing an initial case study using utility input to estimate the benefits of deploying MAS. In summary, the MAS approach, which had previously been investigated with good success by APERC for naval shipboard applications, has now been applied with promising results for enhancing an electric power distribution circuit, such as the Circuit of the Future developed by Southern California Edison. The results for next generation power systems include better ability to reconfigure circuits, improve protection and enhance reliability.

None

2010-02-28T23:59:59.000Z

442

Reactor control rod timing system. [LMFBR  

DOE Patents (OSTI)

A fluid driven jet-edge whistle timing system is described for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

Wu, P.T.K.

1980-03-18T23:59:59.000Z

443

Variable temperature seat climate control system  

DOE Patents (OSTI)

A temperature climate control system comprises a variable temperature seat, at least one heat pump, at least one heat pump temperature sensor, and a controller. Each heat pump comprises a number of Peltier thermoelectric modules for temperature conditioning the air in a main heat exchanger and a main exchanger fan for passing the conditioned air from the main exchanger to the variable temperature seat. The Peltier modules and each main fan may be manually adjusted via a control switch or a control signal. Additionally, the temperature climate control system may comprise a number of additional temperature sensors to monitor the temperature of the ambient air surrounding the occupant as well as the temperature of the conditioned air directed to the occupant. The controller is configured to automatically regulate the operation of the Peltier modules and/or each main fan according to a temperature climate control logic designed both to maximize occupant comfort during normal operation, and minimize possible equipment damage, occupant discomfort, or occupant injury in the event of a heat pump malfunction.

Karunasiri, Tissa R. (Van Nuys, CA); Gallup, David F. (Pasadena, CA); Noles, David R. (Glendale, CA); Gregory, Christian T. (Alhambra, CA)

1997-05-06T23:59:59.000Z

444

Secure and Efficient Routable Control Systems  

SciTech Connect

This document provides the methods to secure routable control system communication in the electric sector. The approach of this document yields a long-term vision for a future of secure communication, while also providing near term steps and a roadmap. The requirements for the future secure control system environment were spelled out to provide a final target. Additionally a survey and evaluation of current protocols was used to determine if any existing technology could achieve this goal. In the end a four-step path was described that brought about increasing requirement completion and culminates in the realization of the long term vision.

Edgar, Thomas W.; Hadley, Mark D.; Manz, David O.; Winn, Jennifer D.

2010-05-01T23:59:59.000Z

445

Self-organizing fuzzy control of active suspension systems  

Science Conference Proceedings (OSTI)

A self-organizing fuzzy controller (SOFC) is proposed to control an active suspension system and evaluate its control performance. In complicated nonlinear system control, the SOFC continually updates the learning strategy in the form of fuzzy rules ...

Ruey-Jing Lian; Bai-Fu Lin; Wun-Tong Sie

2005-02-01T23:59:59.000Z

446

A robust fault-tolerant control strategy for networked control systems  

Science Conference Proceedings (OSTI)

Networked control systems (NCS) are one type of distributed control systems where serial communication networks is used to exchange system information and control signals between various physical components of the systems that may be physically distributed. ... Keywords: Deadbands, Networked control systems (NCS), Random time delays, Robust fault-tolerant control, T-S fuzzy modeling

Huo Zhihong; Zheng Yuan; Xu Chang

2011-03-01T23:59:59.000Z

447

Side-by-Side Testing of Commercial Office Lighting Systems: Two-lamp Fluorescent Fixtures  

E-Print Network (OSTI)

Lighting systems in commercial office buildings are primary determinants of building energy use. In warmer climates, lighting energy use has important implications for building cooling loads as well as those directly associated with illumination tasks. To research the comparative performance of conventional and advanced office lighting systems, Florida Solar Energy Center (FSEC) set up the Lighting Flexible Test Facility (LFTF) which allows side-by-side comparison of lighting options in two otherwise identical 2.7 m x 3.7 m (9' x 12') south facing offices. The ceiling of the LFTF contains 0.61 m x 1.2 m (2' x 4') recessed fluorescent fixtures designed to be easily changed. Differing lighting systems were comparatively tested against each other over weeklong periods. Data on power consumption (watts), power quality (power factor), work-plane interior lighting levels (lux), bulb-wall, fixture and plenum temperatures were recorded every 15 minutes on a multi-channel data logger. This data allows realistic analysis of comparative lighting system performance including interactions with daylighting.

Parker, D. S.; Schrum, L.; Sonne, J. K.; Stedman, T. C.

1996-01-01T23:59:59.000Z

448

Software Quality Assurance Control of Existing Systems  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2.01.00 - 2002 2.01.00 - 2002 Software Quality Assurance Control of Existing Systems September 2002 United States Department of Energy Albuquerque Operations Office Abstract Existing software systems often represent significant investments and play important roles in the every day businesses of organizations. Many of these systems are experiencing support problems. To meet current and future operational needs, organizations need to plan how best to address these support issues. Some of the issues to consider are presented in this document with references to related standards for further detailed examination. Two tutorials, one based on software maintenance and another detailing a baseline recovery strategy are included. SQA Control of Existing Systems SQAS22.01.00-2002

449

A HIGH PERFORMANCE/LOW COST ACCELERATOR CONTROL SYSTEM  

E-Print Network (OSTI)

LOW COST ACCELERATOR CONTROL SYSTEM S. Hagyary, J. GlatŁ» H.LOW COST ACCELERATOR CONTROL SYSTEM S. Magyary, J. Glatz, H.a high performance computer control system tailored to the

Magyary, S.

2010-01-01T23:59:59.000Z

450

A VERY HIGH LEVEL NEUTRAL BEAM CONTROL SYSTEM  

E-Print Network (OSTI)

Level Neutial Beam Control System we have elucidated theseHigh Level Neutral Beam Control System 8!. References 1. V.High-Level Neutral-Beam Control System Victor Elischer Van

Elischer, V.

2010-01-01T23:59:59.000Z

451

Actor-oriented control system design: A responsible framework perspective  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 12,pen- dulum swinging-up control system is used as an example10.1109/TCST.2004.824310 control systems consist of discrete

Liu, J; Eker, J; Janneck, J W; Liu, X J; Lee, E A

2004-01-01T23:59:59.000Z

452

Preventing, Controlling and Mitigating Power System Separation  

Science Conference Proceedings (OSTI)

Large power system blackouts, although infrequent, may affect up to tens of millions of people and result in huge costs. A blackout is the result of a sequence of disturbances including initial events, consequent protective actions or additional failures, related vulnerability conditions, and accelerated cascading outages leading to the final blackout. Those disturbances may gradually weaken a power system's connections and result in growing angular oscillations between inter-connected control areas. If ...

2010-12-01T23:59:59.000Z

453

Chaos and Control in Nonlinear Bloch System  

E-Print Network (OSTI)

The dynamics of two nonlinear Bloch systems is studied from the viewpoint of bifur- cation and a particular parameter space has been explored for the stability analysis based on stability criterion. This enables the choice of the desired unstable periodic orbit from the numerous unstable ones present within the attractor through the pro- cess of closed return pairs. A generalized active control method have been discussed for two Bloch systems arising from di erent initial conditions.

B. Rakshit; P. Saha; A. Roy. Chowdhury

2005-01-03T23:59:59.000Z

454

Method and system for controlled combustion engines  

DOE Patents (OSTI)

A system for controlling combustion in internal combustion engines of both the Diesel or Otto type, which relies on establishing fluid dynamic conditions and structures wherein fuel and air are entrained, mixed and caused to be ignited in the interior of a multiplicity of eddies, and where these structures are caused to sequentially fill the headspace of the cylinders.

Oppenheim, A. K. (Berkeley, CA)

1990-01-01T23:59:59.000Z

455

Variable emissivity laser thermal control system  

DOE Patents (OSTI)

A laser thermal control system for a metal vapor laser maintains the wall temperature of the laser at a desired level by changing the effective emissivity of the water cooling jacket. This capability increases the overall efficiency of the laser. 8 figs.

Milner, J.R.

1994-10-25T23:59:59.000Z

456

Oscillation control system for electric motor drive  

DOE Patents (OSTI)

A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

Slicker, J.M.; Sereshteh, A.

1988-08-30T23:59:59.000Z