National Library of Energy BETA

Sample records for delivery control systems

  1. Fluid delivery control system

    DOE Patents [OSTI]

    Hoff, Brian D.; Johnson, Kris William; Algrain, Marcelo C.; Akasam, Sivaprasad

    2006-06-06

    A method of controlling the delivery of fluid to an engine includes receiving a fuel flow rate signal. An electric pump is arranged to deliver fluid to the engine. The speed of the electric pump is controlled based on the fuel flow rate signal.

  2. Computer controlled feed delivery system for feed trucks 

    E-Print Network [OSTI]

    Holt, Gregory Alan

    1989-01-01

    COMPUTER CONTROLLED FEED DELIVERY SYSTEM FOR FEED TRUCKS A Thesis by GREGORY ALAN HOLT Submitted to the Office of Graduate Studies of Texas ABM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August... 1989 Major Subject: Agricultural Engineering COMPIJIER CONTROLLED FEED DELIVERY SYSTEM FOR FEED TRUCKS A Thesis by GREGORY ALAN HOLT Approved as to style and content by: Calvin B. Parnell (Chair of Committee) ayne LePori (Member) Charlie G...

  3. Vulnerability Analysis of Energy Delivery Control Systems

    Office of Environmental Management (EM)

    system. Some vendors have integrators who work with customers to create and install the system. Other vendors have just a product model. Often, integration consultants with...

  4. Use of Supervisory Control and Data Acquisition for Damage Location of Water Delivery Systems

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Use of Supervisory Control and Data Acquisition for Damage Location of Water Delivery Systems Masanobu Shinozuka1 ; Jianwen Liang2 ; and Maria Q. Feng3 Abstract: Urban water delivery systems can, this paper develops a methodology to detect and locate the damage in a water delivery system by monitoring

  5. Control system and method for a power delivery system having a continuously variable ratio transmission

    DOE Patents [OSTI]

    Frank, Andrew A. (1034 Hillside Ave., Madison, WI 53705)

    1984-01-01

    A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for minimum fuel consumption. CVT ratio is controlled as a function of commanded power or torque and measured load, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristic for any load placed on the engine.

  6. Control system and method for a power delivery system having a continuously variable ratio transmission

    DOE Patents [OSTI]

    Frank, A.A.

    1984-07-10

    A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for minimum fuel consumption. CVT ratio is controlled as a function of commanded power or torque and measured load, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristic for any load placed on the engine. 4 figs.

  7. Roadmap to Achieve Energy Delivery Systems Cybersecurity

    Broader source: Energy.gov (indexed) [DOE]

    to Achieve Energy Delivery Systems Cybersecurity ii Acknowledgements The Energy Sector Control Systems Working Group (ESCSWG) developed this roadmap in support of the Electricity...

  8. Multistage nanoparticle delivery system for deep penetration into solid tumor and electrically controlled catalytic nanowire growth

    E-Print Network [OSTI]

    Wong, Cliff R. (Cliff Richard)

    2011-01-01

    Assembly of functional nanocomponents offers promising applications in drug delivery to solid tumors and bottom-up synthesis and integration of nanodevices. This thesis presents a novel multistage nanoparticle delivery ...

  9. Secondary fuel delivery system

    DOE Patents [OSTI]

    Parker, David M. (Oviedo, FL); Cai, Weidong (Oviedo, FL); Garan, Daniel W. (Orlando, FL); Harris, Arthur J. (Orlando, FL)

    2010-02-23

    A secondary fuel delivery system for delivering a secondary stream of fuel and/or diluent to a secondary combustion zone located in the transition piece of a combustion engine, downstream of the engine primary combustion region is disclosed. The system includes a manifold formed integral to, and surrounding a portion of, the transition piece, a manifold inlet port, and a collection of injection nozzles. A flowsleeve augments fuel/diluent flow velocity and improves the system cooling effectiveness. Passive cooling elements, including effusion cooling holes located within the transition boundary and thermal-stress-dissipating gaps that resist thermal stress accumulation, provide supplemental heat dissipation in key areas. The system delivers a secondary fuel/diluent mixture to a secondary combustion zone located along the length of the transition piece, while reducing the impact of elevated vibration levels found within the transition piece and avoiding the heat dissipation difficulties often associated with traditional vibration reduction methods.

  10. Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentatio...

    Broader source: Energy.gov (indexed) [DOE]

    Analysis Using VCSE Promoting Control System Reliability Cybersecurity for Energy Delivery Systems 2010 Peer Review DOEOE National SCADA Test Bed Fiscal Year 2009 Work Plan...

  11. Microfabricated injectable drug delivery system

    DOE Patents [OSTI]

    Krulevitch, Peter A. (Pleasanton, CA); Wang, Amy W. (Oakland, CA)

    2002-01-01

    A microfabricated, fully integrated drug delivery system capable of secreting controlled dosages of multiple drugs over long periods of time (up to a year). The device includes a long and narrow shaped implant with a sharp leading edge for implantation under the skin of a human in a manner analogous to a sliver. The implant includes: 1) one or more micromachined, integrated, zero power, high and constant pressure generating osmotic engine; 2) low power addressable one-shot shape memory polymer (SMP) valves for switching on the osmotic engine, and for opening drug outlet ports; 3) microfabricated polymer pistons for isolating the pressure source from drug-filled microchannels; 4) multiple drug/multiple dosage capacity, and 5) anisotropically-etched, atomically-sharp silicon leading edge for penetrating the skin during implantation. The device includes an externally mounted controller for controlling on-board electronics which activates the SMP microvalves, etc. of the implant.

  12. Packaging for a drug delivery microelectromechanical system

    E-Print Network [OSTI]

    Ho Duc, Hong Linh, 1978-

    2005-01-01

    Local drug delivery is a fast expanding field, and has been a center of attention for researchers in medicine in the last decade. Its advantages over systemic drug delivery are clear in cancer therapy, with localized tumors. ...

  13. Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentatio...

    Office of Environmental Management (EM)

    Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentations - Secure Communications Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentations -...

  14. Cybersecurity Procurement Language for Energy Delivery Systems

    Office of Environmental Management (EM)

    delivery system from multiple Suppliers. Maintaining appropriate cybersecurity in such a system may require additional language that ensures the secure integration of components,...

  15. Energy Delivery Systems Cybersecurity | Department of Energy

    Energy Savers [EERE]

    the country. CEDS program activities fall under five project areas, guided by the Roadmap to Achieve Energy Delivery Systems Cybersecurity. They are: Build a Culture of...

  16. Fiber coupled optical spark delivery system

    DOE Patents [OSTI]

    Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO)

    2008-08-12

    A spark delivery system for generating a spark using a laser beam is provided, the spark delivery system including a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. In addition, the laser delivery assembly includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. In accordance with embodiments of the present invention, the assembly may be used to create a spark in a combustion engine. In accordance with other embodiments of the present invention, a method of using the spark delivery system is provided. In addition, a method of choosing an appropriate fiber for creating a spark using a laser beam is also presented.

  17. Fiber laser coupled optical spark delivery system

    DOE Patents [OSTI]

    Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO); Joshi, Sachin (Fort Collins, CO); Reynolds, Adam (Fort Collins, CO)

    2008-03-04

    A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.

  18. Roadmap to Achieve Energy Delivery Systems Cybersecurity - 2011...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap to Achieve Energy Delivery Systems Cybersecurity - 2011 Roadmap to Achieve Energy Delivery Systems Cybersecurity - 2011 As part of the Obama Administration's goals to...

  19. Renewable energy delivery systems and methods

    DOE Patents [OSTI]

    Walker, Howard Andrew

    2013-12-10

    A system, method and/or apparatus for the delivery of energy at a site, at least a portion of the energy being delivered by at least one or more of a plurality of renewable energy technologies, the system and method including calculating the load required by the site for the period; calculating the amount of renewable energy for the period, including obtaining a capacity and a percentage of the period for the renewable energy to be delivered; comparing the total load to the renewable energy available; and, implementing one or both of additional and alternative renewable energy sources for delivery of energy to the site.

  20. Waste Feed Delivery Transfer System Analysis

    SciTech Connect (OSTI)

    JULYK, L.J.

    2000-05-05

    This document provides a documented basis for the required design pressure rating and pump pressure capacity of the Hanford Site waste-transfer system in support of the waste feed delivery to the privatization contractor for vitrification. The scope of the analysis includes the 200 East Area double-shell tank waste transfer pipeline system and the associated transfer system pumps for a11 Phase 1B and Phase 2 waste transfers from AN, AP, AW, AY, and A2 Tank Farms.

  1. Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentatio...

    Energy Savers [EERE]

    Software Engineering Institute Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentations - Software Engineering Institute National lab researchers, industry...

  2. Common Cyber Security Vulnerabilities Observed in Control System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems (September 2011) Vulnerability Analysis of Energy Delivery Control Systems - 2011 Lessons Learned from Cyber Security Assessments of SCADA and Energy Management Systems...

  3. Controlling drug delivery across the placenta: A commentary

    E-Print Network [OSTI]

    Audus, Kenneth L.

    1999-01-01

    Audus, K.L. (1999) Controlling drug delivery across the placenta: A commentary. Eur. J. Pharm. Sci. 8, 161-165. PMID: 10379038. Publisher’s official version: http://dx.doi.org/10.1016/S0928-0987(99)00031-7. Open Access version: http... document contains the author’s accepted manuscript. For the publisher’s version, see the link in the header of this document.] Paper citation: Audus, K.L. (1999) Controlling drug delivery across the placenta: A commentary. Eur. J. Pharm. Sci. 8...

  4. Hydrogen Delivery Technologies and Systems- Pipeline Transmission of Hydrogen

    Broader source: Energy.gov [DOE]

    Hydrogen Delivery Technologies and Systems - Pipeline Transmission of Hydrogen. Design and operations standards and materials for hydrogen and natural gas pipelines.

  5. Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentatio...

    Energy Savers [EERE]

    Trustworthy Cyber Infrastructure for the Power Grid (TCIPG) Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentations - Trustworthy Cyber Infrastructure for the...

  6. Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentatio...

    Office of Environmental Management (EM)

    Review Presentations - Secure Communications Cybersecurity for Energy Delivery Systems 2010 Peer Review Presentations - Trustworthy Cyber Infrastructure for the Power Grid (TCIPG)...

  7. Patch and Update Management Program for Energy Delivery Systems

    Office of Environmental Management (EM)

    a comprehensive solution to meet energy sector patch and update needs. A collaborative web portal aggregates and organizes patch and update information for energy delivery system...

  8. Fluid Delivery System For Capillary Electrophoretic Applications.

    DOE Patents [OSTI]

    Li, Qingbo (State College, PA); Liu, Changsheng (State College, PA); Kane, Thomas E. (State College, PA); Kernan, John R. (Loganton, PA); Sonnenschein, Bernard (Brooklyn, NY); Sharer, Michael V. (Tyrone, PA)

    2002-04-23

    An automated electrophoretic system is disclosed. The system employs a capillary cartridge having a plurality of capillary tubes. The cartridge has a first array of capillary ends projecting from one side of a plate. The first array of capillary ends are spaced apart in substantially the same manner as the wells of a microtitre tray of standard size. This allows one to simultaneously perform capillary electrophoresis on samples present in each of the wells of the tray. The system includes a stacked, dual carrousel arrangement to eliminate cross-contamination resulting from reuse of the same buffer tray on consecutive executions from electrophoresis. The system also has a gel delivery module containing a gel syringe/a stepper motor or a high pressure chamber with a pump to quickly and uniformly deliver gel through the capillary tubes. The system further includes a multi-wavelength beam generator to generate a laser beam which produces a beam with a wide range of wavelengths. An off-line capillary reconditioner thoroughly cleans a capillary cartridge to enable simultaneous execution of electrophoresis with another capillary cartridge. The streamlined nature of the off-line capillary reconditioner offers the advantage of increased system throughput with a minimal increase in system cost.

  9. Reliability review of the remote tool delivery system locomotor

    SciTech Connect (OSTI)

    Chesser, J.B.

    1999-04-01

    The locomotor being built by RedZone Robotics is designed to serve as a remote tool delivery (RID) system for waste retrieval, tank cleaning, viewing, and inspection inside the high-level waste tanks 8D-1 and 8D-2 at West Valley Nuclear Services (WVNS). The RTD systm is to be deployed through a tank riser. The locomotor portion of the RTD system is designed to be inserted into the tank and is to be capable of moving around the tank by supporting itself and moving on the tank internal structural columns. The locomotor will serve as a mounting platform for a dexterous manipulator arm. The complete RTD system consists of the locomotor, dexterous manipulator arm, cameras, lights, cables, hoses, cable/hose management system, power supply, and operator control station.

  10. Optical diagnostics integrated with laser spark delivery system

    DOE Patents [OSTI]

    Yalin, Azer (Fort Collins, CO); Willson, Bryan (Fort Collins, CO); Defoort, Morgan (Fort Collins, CO); Joshi, Sachin (Fort Collins, CO); Reynolds, Adam (Fort Collins, CO)

    2008-09-02

    A spark delivery system for generating a spark using a laser beam is provided, and includes a laser light source and a laser delivery assembly. The laser delivery assembly includes a hollow fiber and a launch assembly comprising launch focusing optics to input the laser beam in the hollow fiber. The laser delivery assembly further includes exit focusing optics that demagnify an exit beam of laser light from the hollow fiber, thereby increasing the intensity of the laser beam and creating a spark. Other embodiments use a fiber laser to generate a spark. Embodiments of the present invention may be used to create a spark in an engine. Yet other embodiments include collecting light from the spark or a flame resulting from the spark and conveying the light for diagnostics. Methods of using the spark delivery systems and diagnostic systems are provided.

  11. Multiple delivery cesium oven system for negative ion sources

    SciTech Connect (OSTI)

    Bansal, G.; Bhartiya, S.; Pandya, K.; Bandyopadhyay, M.; Singh, M. J.; Soni, J.; Gahlaut, A.; Parmar, K. G.; Chakraborty, A. [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India)

    2012-02-15

    Distribution of cesium in large negative ion beam sources to be operational in ITER, is presently based on the use of three or more cesium ovens, which operate simultaneously and are controlled remotely. However, use of multiple Cs ovens simultaneously is likely to pose difficulties in operation and maintenance of the ovens. An alternate method of Cs delivery, based on a single oven distribution system is proposed as one which could reduce the need of simultaneous operation of many ovens. A proof of principle experiment verifying the concept of a multinozzle distributor based Cs oven has been carried out at Institute for Plasma Research. It is also observed that the Cs flux is not controlled by Cs reservoir temperature after few hours of operation but by the temperature of the distributor which starts behaving as a Cs reservoir.

  12. Composite gelatin delivery system for bone regeneration

    E-Print Network [OSTI]

    Hager, Elizabeth A. (Elizabeth Ann)

    2005-01-01

    In this thesis, the chemical/mechanical properties and biocompatibility of gelatin were investigated to produce a gelatin scaffold for the release of bone morphogenetic proteins (BMPs) from composite particles. This delivery ...

  13. Water delivery in the Early Solar System

    E-Print Network [OSTI]

    Dvorak, Rudolf; Süli, Áron; Sándor, Zsolt; Galiazzo, Mattia; Pilat-Lohinger, Elke

    2015-01-01

    As part of the national scientific network 'Pathways to Habitable Worlds' the delivery of water onto terrestrial planets is a key question since water is essential for the development of life as we know it. After summarizing the state of the art we show some first results of the transport of water in the early Solar System for scattered main belt objects. Hereby we investigate the questions whether planetesimals and planetesimal fragments which have gained considerable inclination due to the strong dynamical interactions in the main belt region around 2 AU can be efficient water transporting vessels. The Hungaria asteroid group is the best example that such scenarios are realistic. Assuming that the gas giants and the terrestrial planets are already formed, we monitor the collisions of scattered small bodies containing water (in the order of a few percent) with the terrestrial planets. Thus we are able to give a first estimate concerning the respective contribution of such bodies to the actual water content i...

  14. Progress toward a Colon Targeting Nanoparticle Based Drug Delivery System 

    E-Print Network [OSTI]

    Yu, Xiao

    2012-07-16

    Hydrophobic drug paclitaxel nanoparticles (PAX NPs) and pH sensitive hydrogels were prepared in this study to build a colon targeting nanoparticle based drug delivery system for oral administration. Negative charged PAX NPs at the size of 110...

  15. Polarimeters and Energy Spectrometers for the ILC Beam Delivery System

    SciTech Connect (OSTI)

    Boogert, S.; /Royal Holloway, U. of London; Hildreth, M.; /Notre Dame U.; Kafer, D.; List, J.; Monig, K.; /DESY; Moffeit, K.C.; /SLAC; Moortgat-Pick, G.; /Durham U., IPPP; Riemann, S.; Schreiber, H.J.; Schuler, P.; /DESY; Torrence, E.; /Oregon U.; Woods, M.; /SLAC

    2009-02-24

    This article gives an overview of current plans and issues for polarimeters and energy spectrometers in the Beam Delivery System of the ILC. It is meant to serve as a useful reference for the Detector Letter of Intent documents currently being prepared. Concepts for high precision polarization and energy measurements exist. These concepts have resulted in detailed system layouts that are included in the RDR description for the Beam Delivery System. The RDR includes both upstream and downstream polarimeters and energy spectrometers for both beams. This provides needed complementarity and redundancy for achieving the precision required, with adequate control and demonstration of systematic errors. The BDS polarimeters and energy spectrometers need to be a joint effort of the ILC BDS team and the Detector collaborations, with collaboration members responsible for the performance and accuracy of the measurements. Details for this collaboration and assigning of responsibilities remain to be worked out. There is also a demonstrated need for Detector physicists to play an active role in the design and evaluation of accelerator components that impact beam polarization and beam energy capabilities, including the polarized source and spin rotator systems. A workshop was held in 2008 on ILC Polarization and Energy measurements, which resulted in a set of recommendations for the ILC design and operation. Additional input and action is needed on these from the Detector collaborations, the Research Director and the GDE. Work is continuing during the ILC engineering design phase to further optimize the polarimeter and energy spectrometer concepts and fully implement them in the ILC. This includes consideration for alternative methods, detailed design and cost estimates, and prototype and test beam activities.

  16. Toward new solid and liquid phase systems for the containment, transport and delivery of hydrogen

    Broader source: Energy.gov [DOE]

    Toward new solid and liquid phase systems for the containment, transport and delivery of hydrogen.Solid and liquid hydrogen carriers for use in hydrogen storage and delivery.

  17. Quality control procedures for dynamic treatment delivery techniques involving couch motion

    SciTech Connect (OSTI)

    Yu, Victoria Y.; Fahimian, Benjamin P.; Xing, Lei; Hristov, Dimitre H.

    2014-08-15

    In this study, the authors introduce and demonstrate quality control procedures for evaluating the geometric and dosimetric fidelity of dynamic treatment delivery techniques involving treatment couch motion synchronous with gantry and multileaf collimator (MLC). Tests were designed to evaluate positional accuracy, velocity constancy and accuracy for dynamic couch motion under a realistic weight load. A test evaluating the geometric accuracy of the system in delivering treatments over complex dynamic trajectories was also devised. Custom XML scripts that control the Varian TrueBeam™ STx (Serial #3) axes in Developer Mode were written to implement the delivery sequences for the tests. Delivered dose patterns were captured with radiographic film or the electronic portal imaging device. The couch translational accuracy in dynamic treatment mode was 0.01 cm. Rotational accuracy was within 0.3°, with 0.04 cm displacement of the rotational axis. Dose intensity profiles capturing the velocity constancy and accuracy for translations and rotation exhibited standard deviation and maximum deviations below 3%. For complex delivery involving MLC and couch motions, the overall translational accuracy for reproducing programmed patterns was within 0.06 cm. The authors conclude that in Developer Mode, TrueBeam™ is capable of delivering dynamic treatment delivery techniques involving couch motion with good geometric and dosimetric fidelity.

  18. Management of a Smart Grid with Controlled-Delivery of Discrete Power Levels

    E-Print Network [OSTI]

    Rojas-Cessa, Roberto

    Management of a Smart Grid with Controlled-Delivery of Discrete Power Levels Roberto Rojas to power amounts. These two properties, although functional and practical, expose the grid to overload as a controlled-delivery power grid. In this grid, the customer's addresses are embedded in the electrical signal

  19. Thermal Control & System Integration

    Broader source: Energy.gov [DOE]

    The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the development of advanced thermal control technologies....

  20. Distributed Power Delivery for Energy Efficient and Low Power Systems

    E-Print Network [OSTI]

    Friedman, Eby G.

    Distributed Power Delivery for Energy Efficient and Low Power Systems Selc¸uk K¨ose Department are needed to determine the location of these on-chip power supplies and decoupling capacitors. In this paper, the optimal location of the power supplies and decoupling capacitors is determined for different size

  1. System and method for delivery of neutron beams for medical therapy

    DOE Patents [OSTI]

    Nigg, David W. (Idaho Falls, ID); Wemple, Charles A. (Idaho Falls, ID)

    1999-01-01

    A neutron delivery system that provides improved capability for tumor control during medical therapy. The system creates a unique neutron beam that has a bimodal or multi-modal energy spectrum. This unique neutron beam can be used for fast-neutron therapy, boron neutron capture therapy (BNCT), or both. The invention includes both an apparatus and a method for accomplishing the purposes of the invention.

  2. System and method for delivery of neutron beams for medical therapy

    DOE Patents [OSTI]

    Nigg, D.W.; Wemple, C.A.

    1999-07-06

    A neutron delivery system that provides improved capability for tumor control during medical therapy is disclosed. The system creates a unique neutron beam that has a bimodal or multi-modal energy spectrum. This unique neutron beam can be used for fast-neutron therapy, boron neutron capture therapy (BNCT), or both. The invention includes both an apparatus and a method for accomplishing the purposes of the invention. 5 figs.

  3. Control system design method

    DOE Patents [OSTI]

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

    2012-02-21

    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.

  4. Vulnerability Analysis of Energy Delivery Control Systems

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About1996HowFOAShowingFuel Efficiency &Report- April 2012 |Vote for

  5. Steerable/distance enhanced penetrometer delivery system

    SciTech Connect (OSTI)

    Amini, A.; Boyd, G.M.

    1996-12-31

    Characterization, monitoring, and remediation of many of the nation`s highly contaminated sites are high priority at DOE. Penetrometers are often used for rapid characterization of underground contamination (plumes). Because of their heavy weight, use of penetrometer trucks over shallow buried storage tanks is restricted and risky. To close this gap, UTD developed a new position location device for penetrometers, called POLO (POsition LOcator), which provides real- time position location without blocking downhole access for environmental sensors. UTD also developed a system to make penetrometers steerable and capable of deeper penetration. Products of this work is a Steerable Vibratory System, which a relatively lightweight rig capable of greater penetration than traditional penetrometers of the same weight.

  6. Miniature Videoprobe Hockey Stick Delivery System

    SciTech Connect (OSTI)

    Hale, Lester R.; McMurry, Kyle M.

    1998-06-18

    The present invention is a miniature videoprobe system having a probe termination box, a strong back, and a videoprobe housing. The videoprobe system is able to obtain images from a restricted space at least as small as 0.125 inches while producing a high quality image. The strong back has a hockey stick shape with the probe termination box connecting to the top of the handle-like portion of the hockey stick and the videoprobe housing attaching to the opposite end or nose of the hockey stick shape. The videoprobe housing has a roughly arrowhead shape with two thin steel plates sandwiching the internal components there between. The internal components are connected in series to allow for a minor dimension of the videoprobe housing of 0.110 inches. The internal components include an optics train, a CCD chip, and an electronics package. An electrical signal is transmitted from the electronics package through wiring within an internal channel of the strong back to the probe termination box. The strong back has milled into it multiple internal channels for facilitating the transfer of information, items, or devices between the probe termination box and the videoprobe housing.

  7. Feasibility Study: Ductless Hydronic Distribution Systems with Fan Coil Delivery

    SciTech Connect (OSTI)

    Springer, D.; Dakin, B.; Backman, C.

    2012-07-01

    The primary objectives of this study are to estimate potential energy savings relative to conventional ducted air distribution, and to identify equipment requirements, costs, and barriers with a focus on ductless hydronic delivery systems that utilize water-to-air terminal units in each zone. Results indicate that annual heating and cooling energy use can be reduced by up to 27% assuming replacement of the conventional 13 SEER heat pump and coil with a similarly rated air-to-water heat pump.

  8. On-chip nanoplasmonic biosensors with actively controlled nanofluidic surface delivery

    E-Print Network [OSTI]

    Chang, Tsung-Yao

    Performances of surface biosensors are often controlled by the analyte delivery rate to the sensing surface instead of sensors intrinsic detection capabilities. In a microfluidic channel, analyte transports diffusively to ...

  9. Hollow-waveguide delivery systems for high-power, industrial CO2 lasers

    E-Print Network [OSTI]

    Hollow-waveguide delivery systems for high-power, industrial CO2 lasers Ricky K. Nubling and James to deliver CO2 laser power for industrial laser applications. The transmission, bending loss, and output, beam delivery, industrial lasers, power delivery, CO2 lasers. r 1996 Optical Society of America 1

  10. control and Dynamic Systems Decentralized Control

    E-Print Network [OSTI]

    Moore, John Barratt

    control and Dynamic Systems BR Departn Decentralized Control Using Time-Varying Feedback AN D. O controller one connects to the system, so long as the controller has available to it the system inputs of the closed-loop system. If the controller CopyrightO 1985 by Academic Pres, inc. 85 Allrightsofreproductjon

  11. Control and optimization system

    DOE Patents [OSTI]

    Xinsheng, Lou

    2013-02-12

    A system for optimizing a power plant includes a chemical loop having an input for receiving an input parameter (270) and an output for outputting an output parameter (280), a control system operably connected to the chemical loop and having a multiple controller part (230) comprising a model-free controller. The control system receives the output parameter (280), optimizes the input parameter (270) based on the received output parameter (280), and outputs an optimized input parameter (270) to the input of the chemical loop to control a process of the chemical loop in an optimized manner.

  12. CONTROL SYSTEM INTEROPERABILITY

    Broader source: Energy.gov [DOE]

    View this presentation on lighting control system interoperability, given by Michael Poplawski at the DOE SSL Market Development Workshop in Detroit, that defines terminology, discusses...

  13. Stepping Motor Control System

    E-Print Network [OSTI]

    Larson, Noble G.

    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 ...

  14. Control system design guide

    SciTech Connect (OSTI)

    Sellers, David; Friedman, Hannah; Haasl, Tudi; Bourassa, Norman; Piette, Mary Ann

    2003-05-01

    The ''Control System Design Guide'' (Design Guide) provides methods and recommendations for the control system design process and control point selection and installation. Control systems are often the most problematic system in a building. A good design process that takes into account maintenance, operation, and commissioning can lead to a smoothly operating and efficient building. To this end, the Design Guide provides a toolbox of templates for improving control system design and specification. HVAC designers are the primary audience for the Design Guide. The control design process it presents will help produce well-designed control systems that achieve efficient and robust operation. The spreadsheet examples for control valve schedules, damper schedules, and points lists can streamline the use of the control system design concepts set forth in the Design Guide by providing convenient starting points from which designers can build. Although each reader brings their own unique questions to the text, the Design Guide contains information that designers, commissioning providers, operators, and owners will find useful.

  15. The Vacuum System for the TESLA Beam Delivery System A. Brenger, K. Rehlich, K. Zapfe

    E-Print Network [OSTI]

    1 The Vacuum System for the TESLA Beam Delivery System A. Brenger, K. Rehlich, K. Zapfe Deutsches-power beam dumps. The vacuum system is required to maintain an average pressure of 1·10-8 mbar (CO/N2 equiva enough not to disturb the vacuum in the main beam line. For pumping ion getter pumps will be used

  16. AcceptedPreprint Tissue Engineering and Delivery Systems Biotechnology and Bioengineering

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    AcceptedPreprint 1 Tissue Engineering and Delivery Systems Biotechnology and Bioengineering DOI 10 Sciences, Sabanci University, Istanbul 34956, Turkey 2 Biological Sciences & Bioengineering, Faculty

  17. Fuel control system

    SciTech Connect (OSTI)

    Detweiler, C.A.

    1980-12-30

    A fuel control system for a turbocharged engine having fuel delivered to the carburetor under the control of a vacuum operated device which is under the further control of a device sensing pressures upstream and downstream of the turbo charger compressor and delivering a vacuum signal to the fuel control device in proportion to the manifold pressure even though the latter pressure may be a positive pressure.

  18. Rapid cycling medical synchrotron and beam delivery system

    DOE Patents [OSTI]

    Peggs, Stephen G. (Port Jefferson, NY); Brennan, J. Michael (East Northport, NY); Tuozzolo, Joseph E. (Sayville, NY); Zaltsman, Alexander (Commack, NY)

    2008-10-07

    A medical synchrotron which cycles rapidly in order to accelerate particles for delivery in a beam therapy system. The synchrotron generally includes a radiofrequency (RF) cavity for accelerating the particles as a beam and a plurality of combined function magnets arranged in a ring. Each of the combined function magnets performs two functions. The first function of the combined function magnet is to bend the particle beam along an orbital path around the ring. The second function of the combined function magnet is to focus or defocus the particle beam as it travels around the path. The radiofrequency (RF) cavity is a ferrite loaded cavity adapted for high speed frequency swings for rapid cycling acceleration of the particles.

  19. Soil chemical sensor and precision agricultural chemical delivery system and method

    DOE Patents [OSTI]

    Colburn, Jr., John W. (Houston, TX)

    1991-01-01

    A real time soil chemical sensor and precision agricultural chemical delivery system includes a plurality of ground-engaging tools in association with individual soil sensors which measure soil chemical levels. The system includes the addition of a solvent which rapidly saturates the soil/tool interface to form a conductive solution of chemicals leached from the soil. A multivalent electrode, positioned within a multivalent frame of the ground-engaging tool, applies a voltage or impresses a current between the electrode and the tool frame. A real-time soil chemical sensor and controller senses the electrochemical reaction resulting from the application of the voltage or current to the leachate, measures it by resistivity methods, and compares it against pre-set resistivity levels for substances leached by the solvent. Still greater precision is obtained by calibrating for the secondary current impressed through solvent-less soil. The appropriate concentration is then found and the servo-controlled delivery system applies the appropriate amount of fertilizer or agricultural chemicals substantially in the location from which the soil measurement was taken.

  20. Soil chemical sensor and precision agricultural chemical delivery system and method

    DOE Patents [OSTI]

    Colburn, J.W. Jr.

    1991-07-23

    A real time soil chemical sensor and precision agricultural chemical delivery system includes a plurality of ground-engaging tools in association with individual soil sensors which measure soil chemical levels. The system includes the addition of a solvent which rapidly saturates the soil/tool interface to form a conductive solution of chemicals leached from the soil. A multivalent electrode, positioned within a multivalent frame of the ground-engaging tool, applies a voltage or impresses a current between the electrode and the tool frame. A real-time soil chemical sensor and controller senses the electrochemical reaction resulting from the application of the voltage or current to the leachate, measures it by resistivity methods, and compares it against pre-set resistivity levels for substances leached by the solvent. Still greater precision is obtained by calibrating for the secondary current impressed through solvent-less soil. The appropriate concentration is then found and the servo-controlled delivery system applies the appropriate amount of fertilizer or agricultural chemicals substantially in the location from which the soil measurement was taken. 5 figures.

  1. Magnetic Resonant Wireless Power Delivery for Distributed Sensor and Wireless Systems

    E-Print Network [OSTI]

    Cervesato, Iliano

    Magnetic Resonant Wireless Power Delivery for Distributed Sensor and Wireless Systems Brian J. Lee, Andrew Hillenius and David S. Ricketts Electrical & Computer Engineering, Carnegie Mellon University, Pittsburgh, PA 15213 Abstract-- In this paper we report on a resonant wireless power delivery system using

  2. Burner control system

    SciTech Connect (OSTI)

    Cade, P.J.

    1981-01-06

    A burner control apparatus for use with a furnace installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, and one or more devices for control of ignition and/or fuel flow. The burner control apparatus comprises lockout apparatus for de-energizing the control apparatus, a control device for actuating the ignition and/or fuel control devices, and a timing circuit that provides four successive and partially overlapping timing intervals of precise relation, including a purge timing interval, a pilot ignition interval, and a main fuel ignition interval. The present invention further includes a burner control system which verifies the proper operation of certain sensors in a burner or furnace including particularly the air flow sensor. Additionally, the present system also prevents an attempt to ignite a burner if a condition is detected which indicates that the air flow sensor has been bypassed or wedged in the actuated position.

  3. The design and evaluation of a water delivery system for evaporative cooling of a proton exchange membrane fuel cell 

    E-Print Network [OSTI]

    Al-Asad, Dawood Khaled Abdullah

    2009-06-02

    An investigation was performed to demonstrate system design for the delivery of water required for evaporative cooling of a proton exchange membrane fuel cell (PEMFC). The water delivery system uses spray nozzles capable of injecting water directly...

  4. Wakefield Effects in the Beam Delivery System of the ILC

    SciTech Connect (OSTI)

    Bane, K.L.F.; Seryi, A.; /SLAC

    2007-06-27

    The main linac of the International Linear Collider (ILC) accelerates short, high peak current bunches into the Beam Delivery System (BDS) on the way to the interaction point. In the BDS wakefields, excited by the resistance of the beam pipe walls and by beam pipe transitions, will tend to degrade the emittance of the beam bunches. In this report we calculate the effect on single bunch emittance of incoming jitter or drift, and of misalignments of the beam pipes with respect to the beam axis, both analytically and through multi-particle tracking. As we want to keep emittance growth due to this effect small, we consider also mitigation measures of changing the metallic surface material and/or the beam pipe aperture. The wake effects are studied in that part of the BDS which includes the collimation and final focus systems. Typical ILC beam parameters are given in Table 1. Initially a stainless steel (SS) beam pipe is considered. Note that the ILC collimator wakes, though very important, are not included in this study; their effects have been studied elsewhere [1]. Note also that similar methods are presented in recent reports Refs. [2],[3].

  5. Spatiotemporal controlled delivery of nanoparticles to injured vasculature

    E-Print Network [OSTI]

    Chan, Juliana Maria

    2010-01-01

    Complex multimodal nanoparticles (NP) that target and deliver therapeutic agents to a site of disease are a promising direction in modem medicine. As a starting point for innovation, we designed a hybrid NP system combining ...

  6. Drug delivery systems based on sugar-macromolecule conjugates Benjamin G Davis* & Mark A Robinson

    E-Print Network [OSTI]

    Davis, Ben G.

    Drug delivery systems based on sugar-macromolecule conjugates Benjamin G Davis* & Mark A Robinson in Drug Discovery & Development 2002 5(2): 279-288 PharmaPress Ltd ISSN 1367-6733 The specificity-tuning of active drug delivery through their great ability to undergo site- specific modification

  7. Gas Slow Control System Specifications

    E-Print Network [OSTI]

    Roma "La Sapienza", Universitŕ di

    AMS-02 TRD Gas Slow Control System Specifications v 4.2 26-06-2006 A. Bartoloni, B. Borgia, F. Bucci, F. R. Spada INFN Sezione di Roma 1- Roma, Italy #12;2/45 #12;3/45 1. ABSTRACT 5 2. GAS SYSTEM FUNCTIONAL DESCRIPTION 5 3. GAS CONTROL SYSTEM 8 4. CONTROL SYSTEM COMPONENTS 12 a. Universal Control System

  8. Cesium Delivery System for Negative Ion Source at IPR

    SciTech Connect (OSTI)

    Bansal, G.; Pandya, K.; Soni, J.; Gahlaut, A.; Parmar, K. G. [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat, 382 428 (India); Bandyopadhyay, M.; Chakraborty, A.; Singh, M. J. [ITER- India, Institute for Plasma Research, A-29, Sector 25, GIDC, Gandhinagar, Gujarat (India)

    2011-09-26

    The technique of surface production of negative ions using cesium, Cs, has been efficiently exploited over the years for producing negative ion beams with increased current densities from negative ion sources used on neutral beam lines. Deposition of Cs on the source walls and the plasma grid lowers the work function and therefore enables a higher yield of H{sup -}, when hydrogen particles (H and/or H{sub x}{sup +}) strike these surfaces.A single driver RF based (100 kW, 1 MHz) negative ion source test bed, ROBIN, is being set up at IPR under a technical collaboration between IPR and IPP, Germany. The optimization of the Cs oven design to be used on this facility as well as multidriver sources is underway. The characterization experiments of such a Cs delivery system with a 1 g Cs inventory have been carried out using surface ionization technique. The experiments have been carried by delivering Cs into a vacuum chamber without plasma. The linear motion of the surface ionization detector, SID, attached with a linear motion feedthrough allows measuring the angular distribution of the Cs coming out of the oven. Based on the experimental results, a Cs oven for ROBIN has been proposed. The Cs oven design and experimental results of the prototype Cs oven are reported and discussed in the paper.

  9. Electric turbocompound control system

    DOE Patents [OSTI]

    Algrain, Marcelo C. (Dunlap, IL)

    2007-02-13

    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.

  10. Incoherent Control of Locally Controllable Quantum Systems

    E-Print Network [OSTI]

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

    2008-10-21

    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.

  11. Cost Comparison of Public Elementary School Construction Costs Based on Project Delivery System in the State of Texas 

    E-Print Network [OSTI]

    Reinisch, Ashley

    2012-02-14

    the relationship between cost and project delivery systems. A survey was sent to all school superintendents in Texas requesting recent data on elementary school enrollment, project delivery type and construction costs. One hundred and thirty six responses were...

  12. Strategies for combinatorial development of siRNA conjugate delivery systems

    E-Print Network [OSTI]

    Kanasty, Rosemary L

    2015-01-01

    RNA interference (RNAi), which can reversibly silence the expression of any gene, has vast potential as a therapeutic to treat many diseases. A wide variety of small interfering RNA (siRNA) delivery systems has been studied, ...

  13. The National Engineering Education Delivery System (NEEDS): A Multimedia Digital Library of Courseware1

    E-Print Network [OSTI]

    Agogino, Alice M.

    1 The National Engineering Education Delivery System (NEEDS): A Multimedia Digital Library the diverse needs of curricula among a cross section of universities? How can educators modify their role

  14. Telerobotic system concept for real-time soft-tissue imaging during radiotherapy beam delivery

    SciTech Connect (OSTI)

    Schlosser, Jeffrey; Salisbury, Kenneth; Hristov, Dimitre [Department of Mechanical Engineering, Stanford University, Stanford, California 94305 (United States); Department of Computer Science and Department of Surgery, Stanford University, Stanford, California 94305 (United States); Department of Radiation Oncology, Stanford University, Stanford, California 94305 (United States)

    2010-12-15

    Purpose: The curative potential of external beam radiation therapy is critically dependent on having the ability to accurately aim radiation beams at intended targets while avoiding surrounding healthy tissues. However, existing technologies are incapable of real-time, volumetric, soft-tissue imaging during radiation beam delivery, when accurate target tracking is most critical. The authors address this challenge in the development and evaluation of a novel, minimally interfering, telerobotic ultrasound (U.S.) imaging system that can be integrated with existing medical linear accelerators (LINACs) for therapy guidance. Methods: A customized human-safe robotic manipulator was designed and built to control the pressure and pitch of an abdominal U.S. transducer while avoiding LINAC gantry collisions. A haptic device was integrated to remotely control the robotic manipulator motion and U.S. image acquisition outside the LINAC room. The ability of the system to continuously maintain high quality prostate images was evaluated in volunteers over extended time periods. Treatment feasibility was assessed by comparing a clinically deployed prostate treatment plan to an alternative plan in which beam directions were restricted to sectors that did not interfere with the transabdominal U.S. transducer. To demonstrate imaging capability concurrent with delivery, robot performance and U.S. target tracking in a phantom were tested with a 15 MV radiation beam active. Results: Remote image acquisition and maintenance of image quality with the haptic interface was successfully demonstrated over 10 min periods in representative treatment setups of volunteers. Furthermore, the robot's ability to maintain a constant probe force and desired pitch angle was unaffected by the LINAC beam. For a representative prostate patient, the dose-volume histogram (DVH) for a plan with restricted sectors remained virtually identical to the DVH of a clinically deployed plan. With reduced margins, as would be enabled by real-time imaging, gross tumor volume coverage was identical while notable reductions of bladder and rectal volumes exposed to large doses were possible. The quality of U.S. images obtained during beam operation was not appreciably degraded by radiofrequency interference and 2D tracking of a phantom object in U.S. images obtained with the beam on/off yielded no significant differences. Conclusions: Remotely controlled robotic U.S. imaging is feasible in the radiotherapy environment and for the first time may offer real-time volumetric soft-tissue guidance concurrent with radiotherapy delivery.

  15. Methods and apparatuses for reagent delivery, reactive barrier formation, and pest control

    DOE Patents [OSTI]

    Gilmore, Tyler [Pasco, WA; Kaplan, Daniel I [Aiken, SC; Last, George [Richland, WA

    2002-07-09

    A reagent delivery method includes positioning reagent delivery tubes in contact with soil. The tubes can include a wall that is permeable to a soil-modifying reagent. The method further includes supplying the reagent in the tubes, diffusing the reagent through the permeable wall and into the soil, and chemically modifying a selected component of the soil using the reagent. The tubes can be in subsurface contact with soil, including groundwater, and can be placed with directional drilling equipment independent of groundwater well casings. The soil-modifying reagent includes a variety of gases, liquids, colloids, and adsorbents that may be reactive or non-reactive with soil components. The method may be used inter alia to form reactive barriers, control pests, and enhance soil nutrients for microbes and plants.

  16. NSLS control system upgrade

    SciTech Connect (OSTI)

    Smith, J.D.; Ramamoorthy, S.; Tang, Yong N.

    1995-12-31

    The NSLS consists of two storage rings, a booster and a linac. A major upgrade of the control system (installed in 1978) was undertaken and has been completed. The computer architecture is being changed from a three level star-network to a two level distributed system. The microprocessor subsystem, host computer and workstations, communication link and the main software components are being upgraded or replaced. Since the NSLS rings operate twenty four hours a day a year with minimum maintenance time, the key requirement during the upgrade phase is a non-disruptive transition with minimum downtime. Concurrent with the upgrade, some immediate improvements were required. This paper describes the various components of the upgraded system and outlines the future plans.

  17. Retrofit Diesel Emissions Control System Providing 50% NOxControl...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Emissions Control System Providing 50% NOxControl Retrofit Diesel Emissions Control System Providing 50% NOxControl 2005 Diesel Engine Emissions Reduction (DEER) Conference...

  18. Tools and Methods for Hardening Communication Security of Energy Delivery Systems

    SciTech Connect (OSTI)

    Gadgil, Shrirang; Lin, Yow-Jian; Ghosh, Abhrajit; Samtani, Sunil; Kang, Jaewon; Siegell, Bruce; Kaul, Vikram; Unger, John; De Bruet, Andre; Martinez, Catherine; Vermeulen, Gerald; Rasche, Galen; Sternfeld, Scott; Berthier, Robin; Bobba, Rakesh; Campbell, Roy; Sanders, Williams; Lin, Yow-Jian

    2014-06-30

    This document summarizes the research and development work the TT Government Solutions (TTGS), d.b.a. Applied Communication Sciences (ACS), team performed for the Department of Energy Cybersecurity for Energy Delivery Systems (CEDS) program. It addresses the challenges in protecting critical grid control and data communication, including the identification of vulnerabilities and deficiencies of communication protocols commonly used in energy delivery systems (e.g., ICCP, DNP3, C37.118, C12.22), as well as the development of effective means to detect and prevent the exploitation of such vulnerabilities and deficiencies. The team consists of • TT Government Solutions (TTGS), a leading provider of communications solutions that has extensive experience in commercializing communications solutions. TTGS also has deep cyber security research and development expertise supporting a variety of customers. • University of Illinois at Urbana-Champaign (UIUC), a leader in the cyber security research for the power grid. UIUC brings unique experience in designing secure communication protocols to this project. • Electric Power Research Institute (EPRI), an independent nonprofit that conducts research and development relating to the generation, delivery and use of electricity for the benefit of the public. EPRI brings to this effort its extensive technical expertise and its utility connections, with members representing more than 90 percent of the electricity generated and delivered in the United States. • DTE Energy, the 10th largest electric utility in the US, which helps ensure that this project focuses on the needs of utilities and is rightly positioned to address the needs of the market place. We designed, developed, and demonstrated a modular and extensible ADEC-G (Agent-based, Distributed, Extensible Cybersecurity for the Grid) system for monitoring/detecting abnormal energy delivery systems (EDS) protocol usage and ensuring security coverage. Our approach consists of i. An online system with stateful model based checkers (SMBCs) that helps utilities monitor EDS protocol communication contexts and flag abnormal session behaviors; ii. An offline framework that security tool developers, operators, and auditors can use to verify security properties (leverages formal methods). The modular design of the ADEC-G online system enables its easy extension to cover added protocol features, to introduce new monitoring capabilities, and to apply to additional communication protocols. Its monitoring capabilities and user interface features also facilitate visibilities into ongoing communication patterns and quick grasps of suspicious communication activities. The offline framework provides a platform not only for rigorous validation of security coverage, but also for systematic refinement of checker design leveraging the counter traces generated by the model checking tool. The ADEC-G online monitoring/detection system and the offline validation framework are both operational and have been demonstrated in various settings. The ADEC-G online system has also been integrated into TTGS SecureSmart Managed Security Services offering and been employed to perform security assessment in a section of a utility’s operational network as well as in other Smart Grid security pilot project offerings. TTGS is also in discussions with several system integrators for incorporating the integrated SecureSmart Managed Security Services offering as the cyber security solution for the nce of Operations Technology (OT) and Information Technology (IT).

  19. Division 1137 property control system

    SciTech Connect (OSTI)

    Pastor, D.J.

    1982-01-01

    An automated data processing property control system was developed by Mobile and Remote Range Division 1137. This report describes the operation of the system and examines ways of using it in operational planning and control.

  20. Prerequisites Control Systems, System Modeling, Optimal Control, Model Predictive Control, (Engine Systems).

    E-Print Network [OSTI]

    Lygeros, John

    of High Performance Hybrid Race Cars Background The power unit of a high performance hybrid race carPrerequisites Control Systems, System Modeling, Optimal Control, Model Predictive Control, (Engine consists of an internal combustion engine (ICE) and a kinetic energy recovery system (KERS). The time

  1. NGNP Data Management and Analysis System Analysis and Web Delivery Capabilities

    SciTech Connect (OSTI)

    Cynthia D. Gentillon

    2011-09-01

    Projects for the Very High Temperature Reactor (VHTR) Technology Development Office provide data in support of Nuclear Regulatory Commission licensing of the very high temperature reactor. Fuel and materials to be used in the reactor are tested and characterized to quantify performance in high-temperature and high-fluence environments. The NGNP Data Management and Analysis System (NDMAS) at the Idaho National Laboratory has been established to ensure that VHTR data are (1) qualified for use, (2) stored in a readily accessible electronic form, and (3) analyzed to extract useful results. This document focuses on the third NDMAS objective. It describes capabilities for displaying the data in meaningful ways and for data analysis to identify useful relationships among the measured quantities. The capabilities are described from the perspective of NDMAS users, starting with those who just view experimental data and analytical results on the INL NDMAS web portal. Web display and delivery capabilities are described in detail. Also the current web pages that show Advanced Gas Reactor, Advanced Graphite Capsule, and High Temperature Materials test results are itemized. Capabilities available to NDMAS developers are more extensive, and are described using a second series of examples. Much of the data analysis efforts focus on understanding how thermocouple measurements relate to simulated temperatures and other experimental parameters. Statistical control charts and correlation monitoring provide an ongoing assessment of instrument accuracy. Data analysis capabilities are virtually unlimited for those who use the NDMAS web data download capabilities and the analysis software of their choice. Overall, the NDMAS provides convenient data analysis and web delivery capabilities for studying a very large and rapidly increasing database of well-documented, pedigreed data.

  2. Apatite-Polymer Composite Particles for Controlled Delivery of BMP-2

    E-Print Network [OSTI]

    Yong, Tseh-Hwan

    We have developed a versatile delivery platform comprising a novel composite of two biomaterials with proven track records: apatite and poly(lactic-co-glycolic acid) (PLGA). These composites have been tested in the delivery ...

  3. Error Types, Risk Assessment, & the Technology Delivery System for RESIN

    E-Print Network [OSTI]

    Roe, Emery

    2010-01-01

    reliability of electricity transmission has as well dependednot shared by the electricity transmission system protectedwe not want the electricity transmission system behind that

  4. Optimal Control of Distillation Systems 

    E-Print Network [OSTI]

    Chatterjee, N.; Suchdeo, S. R.

    1984-01-01

    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...

  5. Electrical-Thermal Co-analysis for Power Delivery Networks in 3D System Integration

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Electrical-Thermal Co-analysis for Power Delivery Networks in 3D System Integration Jianyong Xie1 Rubin3 1 School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332 2 IBM Package Design, Development, and Electrical Services Group, Poughkeepsie, N.Y. 12601 3 IBM T

  6. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 6, DECEMBER 2003 947 Power Delivery and Locomotion of

    E-Print Network [OSTI]

    Richardson, David

    JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 12, NO. 6, DECEMBER 2003 947 Power Delivery in a way that does not restrain the device's motion. This paper presents a MEMS actu- ator that operates power to un- tethered MEMS devices, independently of the position and orienta- tion of those devices

  7. Virtual Control Systems Environment (VCSE)

    ScienceCinema (OSTI)

    Atkins, Will

    2014-02-26

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  8. Virtual Control Systems Environment (VCSE)

    SciTech Connect (OSTI)

    Atkins, Will

    2012-10-08

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  9. Sparse Control of Quantum Systems

    E-Print Network [OSTI]

    Gero Friesecke; Felix Henneke; Karl Kunisch

    2015-07-02

    A new class of cost functionals for optimal control of quantum systems which produces controls which are sparse in frequency and smooth in time is proposed. This is achieved by penalizing a suitable time-frequency representation of the control field, rather than the control field itself, and by employing norms which are of $L^1$ or measure form with respect to frequency but smooth with respect to time. A mathematical framework is developed which yields existence of optimal controls and necessary optimality conditions of the resulting nonsmooth, nonconvex optimization problem. The framework covers the important systems of physical interest, including (infinite-dimensional) Schr\\"odinger dynamics on multiple potential energy surfaces as arising in laser control of chemical reactions. Numerical simulations demonstrate that the optimal controls, unlike those obtained with the usual $L^2$ or $H^1$ costs, concentrate on just a few frequencies, even in the infinite-dimensional case of laser-controlled chemical reactions.

  10. Systems and Control Engineering

    E-Print Network [OSTI]

    Rollins, Andrew M.

    ), the automobile companies Ford, GM) computer companies (IBM, Lucent, Bellcore) by the aerospace industry (GE, JPL areas require cross-disciplinary tools and methods for their solution. The Bachelor of Science program include the modeling, analysis, optimization and control of complex biological, energy, and industrial

  11. Systems and methods for bi-directional energy delivery with galvanic isolation

    DOE Patents [OSTI]

    Kajouke, Lateef A.

    2013-06-18

    Systems and methods are provided for bi-directional energy delivery. A charging system comprises a first bi-directional conversion module, a second bi-directional conversion module, and an isolation module coupled between the first bi-directional conversion module and the second bi-directional conversion module. The isolation module provides galvanic isolation between the first bi-directional conversion module and the second bi-directional conversion module.

  12. Methodology for the production and delivery of generative music for the personal listener : systems for realtime generative music production 

    E-Print Network [OSTI]

    Murphy, Michael J.

    2013-11-27

    This thesis will describe a system for the production of generative music through specific methodology, and provide an approach for the delivery of this material. The system and body of work will be targeted specifically ...

  13. Electrical swing adsorption gas storage and delivery system

    DOE Patents [OSTI]

    Judkins, Roddie R. (Knoxville, TN); Burchell, Timothy D. (Oak Ridge, TN)

    1999-01-01

    Systems and methods for electrical swing natural gas adsorption are described. An apparatus includes a pressure vessel; an electrically conductive gas adsorptive material located within the pressure vessel; and an electric power supply electrically connected to said adsorptive material. The adsorptive material can be a carbon fiber composite molecular sieve (CFCMS). The systems and methods provide advantages in that both a high energy density and a high ratio of delivered to stored gas are provided.

  14. Electrical swing adsorption gas storage and delivery system

    DOE Patents [OSTI]

    Judkins, R.R.; Burchell, T.D.

    1999-06-15

    Systems and methods for electrical swing natural gas adsorption are described. An apparatus includes a pressure vessel; an electrically conductive gas adsorptive material located within the pressure vessel; and an electric power supply electrically connected to said adsorptive material. The adsorptive material can be a carbon fiber composite molecular sieve (CFCMS). The systems and methods provide advantages in that both a high energy density and a high ratio of delivered to stored gas are provided. 5 figs.

  15. OCTOBER 2013 IEEE CONTROL SYSTEMS MAGAZINE 23 PEOPLE IN CONTROL

    E-Print Network [OSTI]

    Benmei, Chen

    OCTOBER 2013 « IEEE CONTROL SYSTEMS MAGAZINE 23 PEOPLE IN CONTROL « I n this issue of IEEE Control Systems Magazine, we speak with six IEEE Fellows in the control systems field. Ben M. Chen is a professor and area director of Control, Intelligent Systems, and Robotics in the Department of Elec- trical

  16. Decentralized Control Framework for Networked Control Systems Ahmed Elmahdi

    E-Print Network [OSTI]

    Sun, Dengfeng

    Decentralized Control Framework for Networked Control Systems Ahmed Elmahdi , Ahmad F Taha are closed through a network is defined as Decentralized Networked Control System (DNCS). In this paper, we-networked systems to the general setup of Networked Control Systems (NCS). An observer-based decentralized control

  17. Alveolar targeting of aerosol pentamidine. Toward a rational delivery system

    SciTech Connect (OSTI)

    Simonds, A.K.; Newman, S.P.; Johnson, M.A.; Talaee, N.; Lee, C.A.; Clarke, S.W. )

    1990-04-01

    Nebulizer systems that deposit a high proportion of aerosolized pentamidine on large airways are likely to be associated with marked adverse side effects, which may lead to premature cessation of treatment. We have measured alveolar deposition and large airway-related side effects (e.g., cough, breathlessness, and effect on pulmonary function) after aerosolization of 150 mg pentamidine isethionate labeled with {sup 99m}Tc-Sn-colloid. Nine patients with AIDS were studied using three nebulizer systems producing different droplet size profiles: the Acorn System 22, Respirgard II, and Respirgard II with the inspiratory baffle removed. Alveolar deposition was greatest and side effects least with the nebulizer producing the smallest droplet size profile (Respirgard II), whereas large airway-related side effects were prominent and alveolar deposition lowest with the nebulizer producing the largest droplet size (Acorn System 22). Values for alveolar deposition and adverse airway effects were intermediate using the Respirgard with inspiratory baffle removed, thus indicating the importance of the baffle valve in determining droplet size. Addition of a similar baffle valve to the Acorn System 22 produced a marked improvement in droplet size profile. Selection of a nebulizer that produces an optimal droplet size range offers the advantage of enhancing alveolar targeting of aerosolized pentamidine while reducing large airway-related side effects.

  18. Development of Building Automation and Control Systems

    E-Print Network [OSTI]

    Yang, Yang; Zhu, Qi; Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

    2012-01-01

    A design flow for building automation and control systems,’’Development of Building Automation and Control Systems Yanga design flow for building automation systems that focuses

  19. Development of Building Automation and Control Systems

    E-Print Network [OSTI]

    Yang, Yang; Zhu, Qi; Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

    2012-01-01

    A design flow for building automation and control systems,’’Development of Building Automation and Control Systems Yangdesign of the build- ing automation system (including the

  20. Integrated control system and method

    DOE Patents [OSTI]

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

    2013-10-29

    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.

  1. Decision Support System for integrated door-to-door delivery

    E-Print Network [OSTI]

    Ducatelle, Frederick

    , responsible for traffic infra- structure, while the demand side is constituted by production and trans on the demand side and support planning on the supply side. The objectives of the supply-oriented system, filtered and aggregated suitably to become information with added value. MOSCA Homepage - www

  2. Alternate Air Delivery Systems for Hot and Humid Climates 

    E-Print Network [OSTI]

    Wallace, M.

    1996-01-01

    Carter & Burgess first began using triple deck multi-zone units, in place of traditional VAV systems, on the Texas State Capitol restoration. Since the completion of that project design in early 1991, our firm has now used triple deck multi...

  3. Pump control system for windmills

    DOE Patents [OSTI]

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

    1983-01-01

    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.

  4. A novel microsatellite control system

    SciTech Connect (OSTI)

    Moore, K.R.; Frigo, J.R.; Tilden, M.W.

    1998-02-01

    The authors are researching extremely simple yet quite capable analog pulse-coded neural networks for ``smaller-faster-cheaper`` spacecraft attitude and control systems. The will demonstrate a prototype microsatellite that uses their novel control method to autonomously stabilize itself in the ambient magnetic field and point itself at the brightest available light source. Though still in design infancy, the ``Nervous Net`` controllers described could allow for space missions not currently possible given conventional satellite hardware. Result, prospects and details are presented.

  5. Feedback control of spin systems

    E-Print Network [OSTI]

    Claudio Altafini

    2006-01-03

    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.

  6. Management of Leaks in Hydrogen Production, Delivery, and Storage Systems

    SciTech Connect (OSTI)

    Rawls, G

    2006-04-27

    A systematic approach to manage hydrogen leakage from components is presented. Methods to evaluate the quantity of hydrogen leakage and permeation from a system are provided by calculation and testing sensitivities. The following technology components of a leak management program are described: (1) Methods to evaluate hydrogen gas loss through leaks; (2) Methods to calculate opening areas of crack like defects; (3) Permeation of hydrogen through metallic piping; (4) Code requirements for acceptable flammability limits; (5) Methods to detect flammable gas; (6) Requirements for adequate ventilation in the vicinity of the hydrogen system; (7) Methods to calculate dilution air requirements for flammable gas mixtures; and (8) Concepts for reduced leakage component selection and permeation barriers.

  7. Vulnerability Analysis of Energy Delivery Control Systems (September 2011)

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutoryinEnableVisualization &IdahoLLCVote for

  8. Vulnerability Analysis of Energy Delivery Control Systems - 2011 |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutoryinEnableVisualization &IdahoLLCVote forDepartment of

  9. Left invariant control systems The category of left invariant control systems

    E-Print Network [OSTI]

    Wagner, Stephan

    Background Left invariant control systems Summary The category of left invariant control systems systems #12;Background Left invariant control systems Summary Outline 1 Background The language of categories Smooth manifolds Lie groups 2 Left invariant control systems Introduction and construction

  10. A Feasibility Study: Ductless Hydronic Distribution Systems with Fan Coil Delivery

    SciTech Connect (OSTI)

    D. Springer, B. Dakin, and C. Backman

    2012-07-01

    The primary objectives of this study are to estimate potential energy savings relative to conventional ducted air distribution, and to identify equipment requirements, costs, and barriers with a focus on ductless hydronic delivery systems that utilize water-to-air terminal units in each zone. Results indicate that annual heating and cooling energy use can be reduced by up to 27% assuming replacement of the conventional 13 SEER heat pump and coil with a similarly rated air-to-water heat pump.

  11. Controller Patterns for Component-based Reactive Control Software Systems

    E-Print Network [OSTI]

    Lau, Kung-Kiu

    Controller Patterns for Component-based Reactive Control Software Systems Petr Stepán, Kung-Kiu Lau Organization]: Special-Purpose and Application-Based Systems--Process control systems; D.2.2 [Software of the device they are embedded in, hence we call them reactive control systems. The general schema

  12. Predictive Control for Time-Delayed Switching Control Systems

    E-Print Network [OSTI]

    Barth, Eric J.

    Predictive Control for Time-Delayed Switching Control Systems Bobby L. Shields Eric J. Barth A methodology is proposed for the control of switching systems characterized by linear system dynamics period determines the effect that the next control input will have on the future output of the system

  13. Position feedback control system

    DOE Patents [OSTI]

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

    2003-01-01

    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.

  14. Jefferson Lab Project Control System Manual

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Project Control System Manual Technical Engineering Development Facility (TEDF) Utilities Infrastructure Modernization (UIM) Office of Project Management Project Control...

  15. An engineering approach to systems & control

    E-Print Network [OSTI]

    Langendoen, Koen

    , sensing and control. Global chassis control, fault tolerant drive-by-wire systems and smart energy managem

  16. Control system health test system and method

    DOE Patents [OSTI]

    Hoff, Brian D.; Johnson, Kris W.; Akasam, Sivaprasad; Baker, Thomas M.

    2006-08-15

    A method is provided for testing multiple elements of a work machine, including a control system, a component, a sub-component that is influenced by operations of the component, and a sensor that monitors a characteristic of the sub-component. In one embodiment, the method is performed by the control system and includes sending a command to the component to adjust a first parameter associated with an operation of the component. Also, the method includes detecting a sensor signal from the sensor reflecting a second parameter associated with a characteristic of the sub-component and determining whether the second parameter is acceptable based on the command. The control system may diagnose at least one of the elements of the work machine when the second parameter of the sub-component is not acceptable.

  17. Cost and Area Comparison Per Student of the Public Elementary Schools in Texas based on the Project Delivery Systems 

    E-Print Network [OSTI]

    Goyal Rakesh, Sheetal

    2013-08-09

    It has been shown that there exists a correlation between the cost of construction of elementary schools and the project delivery systems. Previous research showed that Competitive Sealed proposal contract method of construction is $4000 cheaper...

  18. Geometric control and dynamical systems Ludovic Rifford

    E-Print Network [OSTI]

    Rifford, Ludovic

    Geometric control and dynamical systems Ludovic Rifford Universit´e de Nice - Sophia Antipolis Equations and Applications Ludovic Rifford Geometric control and dynamical systems #12;Control of an inverted pendulum Ludovic Rifford Geometric control and dynamical systems #12;Control systems A general

  19. Reactor control rod timing system

    DOE Patents [OSTI]

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

    1982-01-01

    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.

  20. Reactor control rod timing system

    SciTech Connect (OSTI)

    Wu, P.T.

    1982-02-09

    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.

  1. Control Systems Security Standards: Accomplishments And Impacts...

    Broader source: Energy.gov (indexed) [DOE]

    that need to be made toward meeting the priority strategies defined in the DOEDHS Roadmap to Secure Control Systems in the Energy Sector. Control Systems Security Standards:...

  2. Control Systems Security Publications Library | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    Metrics for Process Control Systems - September 2007 Security Framework for Control System Data Classification and Protection - July 2007 Secure ICCP Integration...

  3. Proton beam therapy control system

    DOE Patents [OSTI]

    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)

    2010-09-21

    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.

  4. Proton beam therapy control system

    DOE Patents [OSTI]

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

    2013-06-25

    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.

  5. Proton beam therapy control system

    DOE Patents [OSTI]

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

    2013-12-03

    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.

  6. Proton beam therapy control system

    DOE Patents [OSTI]

    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)

    2008-07-08

    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.

  7. Quantitative Analysis for Controllability of Symmetric Control Systems

    E-Print Network [OSTI]

    Murota, Kazuo

    Quantitative Analysis for Controllability of Symmetric Control Systems Reiko Tanaka 1 and Kazuo with the controllability of systems possessing symmetries. In partic­ ular, we aim to give a lower bound for the number of functioning modules needed to ensure the controllability of the entire symmetric system. Our concern

  8. Source and Extraction for Simultaneous Four-hall Beam Delivery System at CEBAF

    SciTech Connect (OSTI)

    Kazimi, Reza; Wang, Haipeng; Spata, Mike F.; Hansknecht, John C.

    2013-06-01

    A new design for simultaneous delivery of the electron beam to all four 12 GeV CEBAF experimental halls* requires a new 750 MHz RF separator system in the 5th pass extraction region, a 250 MHz repetition rate for its beams, and addition of a fourth laser at the photo-cathode gun. The proposed system works in tandem with the existing 500 MHz RF separators and beam repetition rate on the lower passes. The new 5th pass RF separators will have the same basic design but modified to run at 750 MHz. The change to the beam repetition rate will be at the photo-cathode gun through an innovative upgrade of the seed laser driver system using electro-optic modulators. The new laser system also allows addition of the fourth laser. The new RF separators, the new laser system and other hardware changes required to implement the Four-Hall operation delivery system will be discussed in this paper.

  9. Synthesis and characterization of pharmaceutical surfactant templated mesoporous silica: Its application to controlled delivery of duloxetine

    SciTech Connect (OSTI)

    Mani, Ganesh; Pushparaj, Hemalatha; Peng, Mei Mei; Muthiahpillai, Palanichamy [Department of Chemical Engineering, Hanseo University, Seosan-si 356 706 (Korea, Republic of); Udhumansha, Ubaidulla [Department of Chemical Engineering, Hanseo University, Seosan-si 356 706 (Korea, Republic of); Department of Pharmaceutics, C.L. Baid Metha College of Pharmacy, Chennai (India); Jang, Hyun Tae, E-mail: htjang@hanseo.ac.kr [Department of Chemical Engineering, Hanseo University, Seosan-si 356 706 (Korea, Republic of)

    2014-03-01

    Graphical abstract: - Highlights: • Usefulness of dual pharmaceutical surfactants in silica synthesis was evaluated. • Effects of concentration of secondary template (Tween-40) were studied. • Effects of fixed solvothermal condition on mesostructure formation were studied. • Duloxetine drug loading capability was studied. • Sustained release of duloxetine was evaluated. - Abstract: A new group of mesoporous silica nanoparticles (MSNs) were synthesized using combination pharmaceutical surfactants, Triton X-100 and Tween-40 as template and loaded with duloxetine hydrochloride (DX), for improving the sustained release of DX and patterns with high drug loading. Agglomerated spherical silica MSNs were synthesized by sol–gel and solvothermal methods. The calcined and drug loaded MSNs were characterized using X-ray diffraction (XRD), Braunner–Emmett–Teller (BET), thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), diffuse reflectance ultraviolet–visible (DRS-UV–vis) spectroscopy. MSNs with high surface area and pore volume were selected and studied for their DX loading and release. The selected MSNs can accommodate a maximum of 34% DX within it. About 90% was released at 200 h and hence, the synthesized MSNs were capable of engulfing DX and sustain its release. Further form the Ritger and Peppas, Higuchi model for mechanism drug release from all the MSN matrices follows anomalous transport or Non-Fickian diffusion with the ‘r’ and ‘n’ value 0.9 and 0.45 < n < 1, respectively. So, from this study it could be concluded that the MSNs synthesized using pharmaceutical templates were better choice of reservoir for the controlled delivery of drug which requires sustained release.

  10. Control Theory of Digitally Networked Dynamic Systems

    E-Print Network [OSTI]

    Knobloch,JĂĽrgen

    Control Theory of Digitally Networked Dynamic Systems #12;Jan Lunze Editor Control Theory control technology for mobile objects. Due to this flexibility, a new challenge for control theory about networked control systems as a new area of control theory. This book gives a concise introduc

  11. Nonlinear Decelerator for Payloads in Aerial Delivery Systems. I: Design and Testing

    E-Print Network [OSTI]

    T. Lyons; M. Ginther; P. Mascarenas; E. Rickard; J. Robinson; J. Braeger; H. Liu; A. Ludu

    2014-08-19

    We study the dynamics and the optimization of the shock deceleration supported by a payload when its airborne carrier impacts the ground. We build a nonlinear elastic model for a container prototype and an elastic suspension system for the payload. We model the dynamics of this system and extract information on maximum deceleration, energy transfer between the container and payload, and energy resonant damping. We designed the system and perform lab experiments for various terminal velocities and types of grounds (cement, grass, sand water, etc.). The results are compared with the theoretical model and results are commented, including predictions for deceleration at different types of ground impact. The results can be used for aerial delivery systems, splash-down of capsules, recoveries, weather balloons, coastal surveying systems, or the new introduced goal-line technology in sport competitions.

  12. Vehicle-based Control Computer Systems

    E-Print Network [OSTI]

    Auslander, David M

    1995-01-01

    Mechatronics . . . . . . . . . . . . . . . . . . . .2 Mechanical System Control: Mechatronics Mechanical systemreliability. The term mechatronics, attributed to Yasakawa

  13. Systems & Control Letters 31, 199205, 1997

    E-Print Network [OSTI]

    Lewis, Andrew D.

    Systems & Control Letters 31, 199­205, 1997 Decompositions for control systems on manifolds In this letter we present a decomposition for control systems whose drift vector field is the geodesic spray are able to easily prove some special results for this class of control systems. Examples illustrate

  14. Cyber Incidents Involving Control Systems

    SciTech Connect (OSTI)

    Robert J. Turk

    2005-10-01

    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).

  15. Urban Sewage Delivery Heat Transfer System (1): Flow Resistance and Energy Analysis 

    E-Print Network [OSTI]

    Zhang, C.; Wu, R.; Li, G.; Li, X.; Huang, L.; Sun, D.

    2006-01-01

    , Shenzhen, China Renewable Energy Resources and a Greener Future Vol.VIII-8-4 Urban Sewage Delivery Heat Transfer System (1): Flow Resistance and Energy Analysis1 Chenghu Zhang Ronghua Wu Guitao Li Xin Li Lei Huang Dexing Sun Doctor Master...) By the numeric calculation and the simplification, the power function form, can be obtained, which is used in the engineering easily. It is 0.30 0.0235 w d? = (2) The result of (2) is slight bigger than that of (1), but the errors are within 3...

  16. Internet-Based Delivery and Deployment of Document Management Systems Borko Furht, Florida Atlantic University, Boca Raton, Florida

    E-Print Network [OSTI]

    Furht, Borko

    Internet-Based Delivery and Deployment of Document Management Systems Borko Furht, Florida Atlantic Management Systems (DBMS). DBMS typically store structured data and short records, such as name, address management systems is based on the client/server architecture. Typically, the DMS runs on the corporate

  17. Autonomous grain combine control system

    DOE Patents [OSTI]

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

    2013-06-25

    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.

  18. Heat engine generator control system

    DOE Patents [OSTI]

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

    1998-01-01

    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.

  19. Heat engine generator control system

    DOE Patents [OSTI]

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

    1998-05-12

    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.

  20. System design document U-AVLIS control system architecture

    SciTech Connect (OSTI)

    Viebeck, P.G.

    1994-02-16

    This document describes the architecture of the integrated control system for the U-AVLIS process. It includes an overview of the major control system components and their interfaces to one another. Separate documents are utilized to fully describe each component mentioned herein. The purpose of this document is to introduce the reader to the integrated U-AVLIS control system. It describes the philosophy of the control system architecture and how all of the control system components are integrated. While the other System Design Documents describe in detail the design of individual control system components, this document puts those components into their correct context within the entire integrated control system.

  1. Distributed vs. Centralized Power Systems Frequency Control

    E-Print Network [OSTI]

    Dimarogonas, Dimos

    Distributed vs. Centralized Power Systems Frequency Control Martin Andreasson12 , Dimos V control of electrical power systems. We propose a distributed controller which retains the reference, where their performance is compared. I. INTRODUCTION Distributed control is in many large-scale systems

  2. Chapter Ten Control System Theory Overview

    E-Print Network [OSTI]

    Gajic, Zoran

    Chapter Ten Control System Theory Overview In this book we have presented results mostly for continuous-time, time-invariant, deterministic control systems. We have also, to some extent, given the corre- sponding results for discrete-time, time-invariant, deterministic control systems. However, in control

  3. Development of a Light Actuated Drug Delivery-on-Demand System

    E-Print Network [OSTI]

    Linsley, Chase Schilling

    2015-01-01

    polymer scaffolds, Biomaterials, 28 (2007) 1862-1870. [16]for siRNA delivery, Biomaterials, 35 (2014) [47] E. Deu,for protein delivery, Biomaterials, 33 (2012) 9157-9164. [

  4. Evaluation of aftermarket fuel delivery systems for natural gas and LPG vehicles

    SciTech Connect (OSTI)

    Willson, B.

    1992-09-01

    This study was designed to evaluate the effectiveness of aftermarket fuel delivery systems for vehicles fueled by compressed natural gas (CNG) and liquefied petroleum gas (LPG). Most of the CNG and LPG vehicles studied were converted to the alternative fuel after purchase. There are wide variations in the quality of the conversion hardware and the installation. This leads to questions about the overall quality of the converted vehicles, in terms of emissions, safety, and performance. There is a considerable body of emissions data for converted light-duty vehicles, and a smaller amount for medium- and heavy-duty vehicles. However, very few of these data involve real world conditions, and there is growing concern about in-use emissions. This report also attempts to assess factors that could allow in-use emissions to vary from the ``best-case`` results normally reported. The study also addresses issues of fuel supply, fuel composition, performance, safety, and warranty waivers. The report is based on an extensive literature and product survey and on the author`s experience with fuel delivery systems for light-duty vehicles.

  5. Evaluation of aftermarket fuel delivery systems for natural gas and LPG vehicles

    SciTech Connect (OSTI)

    Willson, B. )

    1992-09-01

    This study was designed to evaluate the effectiveness of aftermarket fuel delivery systems for vehicles fueled by compressed natural gas (CNG) and liquefied petroleum gas (LPG). Most of the CNG and LPG vehicles studied were converted to the alternative fuel after purchase. There are wide variations in the quality of the conversion hardware and the installation. This leads to questions about the overall quality of the converted vehicles, in terms of emissions, safety, and performance. There is a considerable body of emissions data for converted light-duty vehicles, and a smaller amount for medium- and heavy-duty vehicles. However, very few of these data involve real world conditions, and there is growing concern about in-use emissions. This report also attempts to assess factors that could allow in-use emissions to vary from the best-case'' results normally reported. The study also addresses issues of fuel supply, fuel composition, performance, safety, and warranty waivers. The report is based on an extensive literature and product survey and on the author's experience with fuel delivery systems for light-duty vehicles.

  6. HTGR Resilient Control System Strategy

    SciTech Connect (OSTI)

    Lynne M. Stevens

    2010-09-01

    A preeminent objective for corporate and government organizations is the protection of major investments, which is attained by achieving state awareness, a comprehensive understanding of security and safety, for critical infrastructures. Given the dependence of critical infrastructure on control systems for automation, the integrity of these systems and their ability to provide owner/operators a high degree of state awareness is essential in attaining a high degree of investment protection and public acceptance. Operators as well as government are therefore burdened to ensure they have a timely understanding of the status of their plant or all plants, respectively, to ensure efficient operations and investment and public protection. “This characterization is a significant objective that must consider many aspects of instrumentation, control, and intelligent systems in order to achieve the required result. These aspects include sensory, communication, analysis, decision, and human system interfaces necessary to achieve fusion of data and presentation of results that will provide an understanding of what issues are important and why.

  7. Recommended Security Controls for Federal Information Systems...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Federal Information Systems and Organizations Note: CNTL NO. Table D2: Security Control Base Lines (Derived From Appendix F) Minimum Requirements: FedRamp Security Controls...

  8. Sliding mode control of quantum systems

    E-Print Network [OSTI]

    Daoyi Dong; Ian R. Petersen

    2009-10-31

    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.

  9. The quantum systems control and the optimal control theory

    E-Print Network [OSTI]

    V. F. Krotov

    2008-05-22

    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.

  10. Using the National Engineering Education Delivery System as the Foundation for Building a Test-Bed Digital Library for

    E-Print Network [OSTI]

    Agogino, Alice M.

    community proposed for the National SMETE Digital Library (NSDL) [1, 2, 3, 4, 5]. The current systemUsing the National Engineering Education Delivery System as the Foundation for Building a Test-Bed Digital Library for Science, Mathematics, Engineering and Technology Education Final Report for NSF Grant

  11. Instrumentation, Control, and Intelligent Systems

    SciTech Connect (OSTI)

    Not Available

    2005-09-01

    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.

  12. Penetration of gas delivery systems in the United States: A state-level data analysis

    SciTech Connect (OSTI)

    Guldmann, J.M. . Environmental Assessment and Information Sciences Div. Ohio State Univ., Columbus, OH )

    1990-02-01

    The purpose of this study is to assess the degree to which the gas delivery infrastructure penetrates US regions and states and to pinpoint those areas in which the lack of a sufficient infrastructure impedes the expansion of the natural gas market. Regions and states are ranked according to several indicators developed with data published by the American Gas Association, the US Department of Energy/Energy Information Administration, and the US Bureau of the Census. These include the numbers of gas customers and gas deliveries by sector, mileages of distribution and transmission pipelines, underground storage capacities and operating characteristics, heating degree-days, populations and numbers of households, and areal measures of states and metropolitan areas. The market penetration of gas distribution systems is measured by two indicators: (1) the ratio of the number of residential gas customers to the number of households in 1985 and (2) the distribution pipeline density, measured by the ratio of the 1985 distribution mileage divided by the number of households, while accounting for the effect of urban population density (using earlier econometric results). 11 refs., 1 fig., 27 tabs.

  13. Cyber Security Procurement Language for Control Systems Version...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Language for Control Systems Version 1.8 Supervisory Control and Data Acquisition (SCADA), Process Control System (PCS), Distributed Control System (DCS), etc. generally refer...

  14. DOWNHOLE VIBRATION MONITORING & CONTROL SYSTEM

    SciTech Connect (OSTI)

    Martin E. Cobern

    2004-08-31

    The deep hard rock drilling environment induces severe vibrations into the drillstring, which can cause reduced rates of penetration (ROP) and premature failure of the equipment. The only current means of controlling vibration under varying conditions is to change either the rotary speed or the weight-on-bit (WOB). These changes often reduce drilling efficiency. Conventional shock subs are useful in some situations, but often exacerbate the problems. The objective of this project is development of a unique system to monitor and control drilling vibrations in a ''smart'' drilling system. This system has two primary elements: (1) The first is an active vibration damper (AVD) to minimize harmful axial, lateral and torsional vibrations. The hardness of this damper will be continuously adjusted using a robust, fast-acting and reliable unique technology. (2) The second is a real-time system to monitor drillstring vibration, and related parameters. This monitor adjusts the damper according to local conditions. In some configurations, it may also send diagnostic information to the surface via real-time telemetry. The AVD is implemented in a configuration using magnetorheological (MR) fluid. By applying a current to the magnetic coils in the damper, the viscosity of the fluid can be changed rapidly, thereby altering the damping coefficient in response to the measured motion of the tool. Phase I of this program entailed modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype. Phase I of the project was completed by the revised end date of May 31, 2004. The objectives of this phase were met, and all prerequisites for Phase II have been completed.

  15. NEREUS Nemertes : embedded mass spectrometer control system

    E-Print Network [OSTI]

    Champy, Adam Samuel

    2005-01-01

    In this thesis, I present Nemertes System, a software suite to control an embedded autonomous mass spectrometer. I first evaluate previous control systems for the hard- ware and evaluate a set of software design goals. The ...

  16. Control System Commissioning for Enhanced Building Operations 

    E-Print Network [OSTI]

    Salsbury, T. I.; Singhal, A.

    2003-01-01

    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...

  17. Adaptive control of Unmanned Aerial Systems

    E-Print Network [OSTI]

    Dydek, Zachary Thompson

    2010-01-01

    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 ...

  18. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A. (San Jose, CA)

    1992-01-01

    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.

  19. Gemini MCAO Control System , J. Sebag1

    E-Print Network [OSTI]

    Gemini MCAO Control System C. Boyer1 , J. Sebag1 , M. Hunten1 , L. Saddlemyer2 Gemini Preprint #77, 5071 W. Saanich Road, Victoria BC V9E 2E7 Canada #12;Gemini MCAO Control System Corinne Boyer-uniform atmospheric compensation over a 1 arc minute square field of view. The control of such a system will be split

  20. Control System Synthesis Through Inductive Learning

    E-Print Network [OSTI]

    Antsaklis, Panos

    Control System Synthesis Through Inductive Learning of Boolean Concepts Michael Lemmon, Panos the use of concept learning in the identification of discrete event system (DES) controllers. Introduction of bounded process uncertainty. If the resulting performance of the robust control system is unacceptable

  1. Adiabatic feedback control of Hamiltonian systems

    E-Print Network [OSTI]

    A. E. Allahverdyan; K. G. Petrosyan; D. B. Saakian

    2006-07-09

    We study feedback control of classical Hamiltonian systems with the controlling parameter varying slowly in time. The control aims to change system's energy. We show that the control problems can be solved with help of an adiabatic invariant that generalizes the conservation of the phase-space volume to control situations. New mechanisms of control for achieving heating, cooling, entropy reduction and particle trapping are found. The feedback control of a many-body system via one of its coordinates is discussed. The results are illustrated by two basic models of non-linear physics.

  2. Fuzzy logic control and optimization system

    DOE Patents [OSTI]

    Lou, Xinsheng (West Hartford, CT)

    2012-04-17

    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.

  3. Active Diesel Emission Control Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems Active Diesel Emission Control Systems 2004 Diesel Engine Emissions Reduction (DEER) Conferencen Presentation: RYPOS Active Diesel Emission Control Systems...

  4. Design and optimization of a multi-particle accelerator beam transport and delivery system for material irradiation in nuclear and fusion science

    E-Print Network [OSTI]

    Sordelet, Tyler Christopher

    2012-01-01

    A beam delivery and transport system were designed for the use in MIT Materials Test Facility (M2TF). The purpose of this beam delivery system was to design a 36 MeV Proton Cyclotron for DPA accumulation and a 100 MeV ...

  5. Wireless Control Systems:Wireless Control Systems: Scientific Challenges andScientific Challenges and

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Wireless Control Systems:Wireless Control Systems: Scientific Challenges andScientific Challenges and Emerging ApplicationsEmerging Applications Karl Henrik Johansson School of Electrical Engineering Royal, Greece 27-29 Jun, 2007 © Karl H. Johansson, Wireless control Acknowledgements

  6. Modeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Modeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems Karl.kth.se/~kallej MOVEP 2006, Bordeaux, France Karl H. Johansson, Hybrid control systems, MOVEP, Bordeaux on commands and autonomous actions #12;Karl H. Johansson, Hybrid control systems, MOVEP, Bordeaux, 2006

  7. Using the National Engineering Education Delivery System as the Foundation for Building a Test-Bed Digital Library for

    E-Print Network [OSTI]

    Agogino, Alice M.

    to developing a national digital library for SMET education that is much more than a static informationUsing the National Engineering Education Delivery System as the Foundation for Building a Test-Bed Digital Library for Science, Mathematics, Engineering and Technology Education Final Report for NSF Grant

  8. Refurbishment program of HANARO control computer system

    SciTech Connect (OSTI)

    Kim, H. K.; Choe, Y. S.; Lee, M. W.; Doo, S. K.; Jung, H. S. [Korea Atomic Energy Research Inst., 989-111 Daedeok-daero, Yuseong, Daejeon, 305-353 (Korea, Republic of)

    2012-07-01

    HANARO, an open-tank-in-pool type research reactor with 30 MW thermal power, achieved its first criticality in 1995. The programmable controller system MLC (Multi Loop Controller) manufactured by MOORE has been used to control and regulate HANARO since 1995. We made a plan to replace the control computer because the system supplier no longer provided technical support and thus no spare parts were available. Aged and obsolete equipment and the shortage of spare parts supply could have caused great problems. The first consideration for a replacement of the control computer dates back to 2007. The supplier did not produce the components of MLC so that this system would no longer be guaranteed. We established the upgrade and refurbishment program in 2009 so as to keep HANARO up to date in terms of safety. We designed the new control computer system that would replace MLC. The new computer system is HCCS (HANARO Control Computer System). The refurbishing activity is in progress and will finish in 2013. The goal of the refurbishment program is a functional replacement of the reactor control system in consideration of suitable interfaces, compliance with no special outage for installation and commissioning, and no change of the well-proved operation philosophy. HCCS is a DCS (Discrete Control System) using PLC manufactured by RTP. To enhance the reliability, we adapt a triple processor system, double I/O system and hot swapping function. This paper describes the refurbishment program of the HANARO control system including the design requirements of HCCS. (authors)

  9. Heating programmer Controls the times the system

    E-Print Network [OSTI]

    Carletta, Jean

    #12;#12;#12;#12;#12;#12;#12;#12;#12;#12;#12;#12;Heating programmer Controls the times the system that will do that for you. #12;Boiler thermostat Controls the temperature of the water in the system -- which? #12;Why don't we already have room thermostats? Because the building regs only specify the controls

  10. Autonomous Thermal Control System Omid Ardakanian

    E-Print Network [OSTI]

    Waterloo, University of

    ) to model and efficiently control a commer- cial building heating system. We use supervised learning in space heating and cooling. Specifically, we use decision making to control the temperature of a building decision-making sys- tem to optimally control a building heating system. Our main goal is to not expend

  11. Control of chaos in Hamiltonian systems

    E-Print Network [OSTI]

    G. Ciraolo; C. Chandre; R. Lima; M. Vittot; M. Pettini

    2003-11-06

    We present a technique to control chaos in Hamiltonian systems which are close to integrable. By adding a small and simple control term to the perturbation, the system becomes more regular than the original one. We apply this technique to a forced pendulum model and show numerically that the control is able to drastically reduced chaos.

  12. Stable Controller Interpolation and Controller Switching for LPV Systems 

    E-Print Network [OSTI]

    Rasmussen, Bryan; Chang, Young Joon

    2010-01-01

    for the system, and Q parameters are calculated such that the original MIMO-PI and H ? controller are recovered at the associated design points, blended by an exponential weighting function. As these controllers were designed using a linearized model, the output.... The interpolated controller retains the abilities of the local controller designs, and is capable of rejecting distur- bances and regulating the lower tank fluid heights to the desired levels at both the nonminimum-phase and minimum-phase design conditions...

  13. Narrowband Control Design for Smart Structural Systems

    E-Print Network [OSTI]

    Narrowband Control Design for Smart Structural Systems Daniel J. Kolepp and Ralph C. Smith 1 Center structures but is suĆciently simple to facilitate initial control design. A PDE model for the structure be employed for structural acoustic control design or control of adjacent ows. In this paper, we focus

  14. Garden Banks 388 subsea production control system

    SciTech Connect (OSTI)

    Goggans, T.; MacNeill, J.; Blincow, M.

    1995-12-31

    This paper discusses the design, analysis and performance requirements of an electrohydraulic production control system for a 24 well deepwater development controlled from a Floating Production Facility (FPF) in the Gulf of Mexico. The controls include not only topside FPF installed equipment, but subsea template and tree mounted equipment, including control umbilicals.

  15. SU-E-T-107: Development of a GPU-Based Dose Delivery System for Adaptive Pencil Beam Scanning

    SciTech Connect (OSTI)

    Giordanengo, S; Russo, G; Marchetto, F; Attili, A; Monaco, V; Varasteh, M; Pella, A

    2014-06-01

    Purpose: A description of a GPU-based dose delivery system (G-DDS) to integrate a fast forward planning implementing in real-time the prescribed sequence of pencil beams. The system, which is under development, is designed to evaluate the dose distribution deviations due to range variations and interplay effects affecting mobile tumors treatments. Methods: The Dose Delivery System (DDS) in use at the Italian Centro Nazionale di Adroterapia Oncologica (CNAO), is the starting point for the presented system. A fast and partial forward planning (FP) tool has been developed to evaluate in few seconds the delivered dose distributions using the DDS data (on-line measurements of spot properties, i.e. number of particles and positions). The computation is performed during the intervals between synchrotron spills and, made available at the end of each spill. In the interval between two spills, the G-DDS will evaluate the delivered dose distributions taking into account the real-time target positions measured by a tracking system. The sequence of prescribed pencil beams for the following spill will be adapted taking into account the variations with respect to the original plan due to the target motion. In order to speed up the computation required to modify pencil beams distribution (up to 400 times has been reached), the Graphics Processing Units (GPUs) and advanced Field Programmable Gate Arrays (FPGAs) are used. Results: An existing offline forward planning is going to be optimized for the CUDA architecture: the gain in time will be presented. The preliminary performances of the developed GPU-based FP algorithms will be shown. Conclusion: A prototype of a GPU-based dose delivery system is under development and will be presented. The system workflow will be illustrated together with the approach adopted to integrate the three main systems, i.e. CNAO dose delivery system, fast forward planning, and tumor tracking system.

  16. Jefferson Lab Data Acquisition Run Control System

    SciTech Connect (OSTI)

    Vardan Gyurjyan; Carl Timmer; David Abbott; William Heyes; Edward Jastrzembski; David Lawrence; Elliott Wolin

    2004-10-01

    A general overview of the Jefferson Lab data acquisition run control system is presented. This run control system is designed to operate the configuration, control, and monitoring of all Jefferson Lab experiments. It controls data-taking activities by coordinating the operation of DAQ sub-systems, online software components and third-party software such as external slow control systems. The main, unique feature which sets this system apart from conventional systems is its incorporation of intelligent agent concepts. Intelligent agents are autonomous programs which interact with each other through certain protocols on a peer-to-peer level. In this case, the protocols and standards used come from the domain-independent Foundation for Intelligent Physical Agents (FIPA), and the implementation used is the Java Agent Development Framework (JADE). A lightweight, XML/RDF-based language was developed to standardize the description of the run control system for configuration purposes.

  17. SUBSURFACE REPOSITORY INTEGRATED CONTROL SYSTEM DESIGN

    SciTech Connect (OSTI)

    C.J. Fernado

    1998-09-17

    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).

  18. One System Integrated Project Team: Retrieval And Delivery Of The Hanford Tank Wastes For Vitrification In The Waste Treatment Plant

    SciTech Connect (OSTI)

    Harp, Benton J. [Department of Energy, Office of River Protection, Richland, Washington (United States); Kacich, Richard M. [Bechtel National, Inc., Richland, WA (United States); Skwarek, Raymond J. [Washington River Protection Solutions LLC, Richland, WA (United States)

    2012-12-20

    The One System Integrated Project Team (IPT) was formed in late 2011 as a way for improving the efficiency of delivery and treatment of highly radioactive waste stored in underground tanks at the U.S. Department of Energy's (DOE's) 586-square-mile Hanford Site in southeastern Washington State. The purpose of the One System IPT is to improve coordination and integration between the Hanford's Waste Treatment Plant (WTP) contractor and the Tank Operations Contractor (TOC). The vision statement is: One System is a WTP and TOC safety conscious team that, through integrated management and implementation of risk-informed decision and mission-based solutions, will enable the earliest start of safe and efficient treatment of Hanford's tank waste, to protect the Columbia River, environment and public. The IPT is a formal collaboration between Bechtel National, Inc. (BNI), which manages design and construction of the WTP for the U.S. Department of Energy's Office of River Protection (DOEORP), and Washington River Protection Solutions (WRPS), which manages the TOC for ORP. More than fifty-six (56) million gallons of highly radioactive liquid waste are stored in one hundred seventy-seven (177) aging, underground tanks. Most of Hanford's waste tanks - one hundred forty-nine (149) of them - are of an old single-shell tank (SST) design built between 1944 and 1964. More than sixty (60) of these tanks have leaked in the past, releasing an estimated one million gallons of waste into the soil and threatening the nearby Columbia River. There are another twenty-eight (28) new double-shelled tanks (DSTs), built from 1968 to 1986, that provide greater protection to the environment. In 1989, DOE, the U.S. Environmental Protection Agency (EPA), and the Washington State Department of Ecology (Ecology) signed a landmark agreement that required Hanford to comply with federal and state environmental standards. It also paved the way for agreements that set deadlines for retrieving the tank wastes and for building and operating the WTP. The tank wastes are the result of Hanford's nearly fifty (50) years of plutonium production. In the intervening years, waste characteristics have been increasingly better understood. However, waste characteristics that are uncertain and will remain as such represent a significant technical challenge in terms of retrieval, transport, and treatment, as well as for design and construction ofWTP. What also is clear is that the longer the waste remains in the tanks, the greater the risk to the environment and the people of the Pacific Northwest. The goal of both projects - tank operations and waste treatment - is to diminish the risks posed by the waste in the tanks at the earliest possible date. About two hundred (200) WTP and TOC employees comprise the IPT. Individual work groups within One System include Technical, Project Integration & Controls, Front-End Design & Project Definition, Commissioning, Nuclear Safety & Engineering Systems Integration, and Environmental Safety and Health and Quality Assurance (ESH&QA). Additional functions and team members will be added as the WTP approaches the operational phase. The team has undertaken several initiatives since its formation to collaborate on issues: (1) alternate scenarios for delivery of wastes from the tank farms to WTP; (2) improvements in managing Interface Control Documents; (3) coordination on various technical issues, including the Defense Nuclear Facilities Nuclear Safety Board's Recommendation 2010-2; (4) deployment of the SmartPlant? Foundation-configuration Management System; and (5) preparation of the joint contract deliverable of the Operational Readiness Support Plan.

  19. Control system for fluid heated steam generator

    DOE Patents [OSTI]

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

    1984-05-29

    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.

  20. Control system for fluid heated steam generator

    DOE Patents [OSTI]

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

    1985-01-01

    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.

  1. R&D ERL: Controls System

    SciTech Connect (OSTI)

    Hoff, L.; Jamilkowski, J.

    2010-01-01

    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.

  2. Occupant Response to Window Control Signaling Systems

    E-Print Network [OSTI]

    Ackerly, Katherine

    2012-01-01

    designing buildings involving both “passive”  and “active” passive and conventional  cooling systems.  Building among a building’s human, mechanical and passive control 

  3. Wireless Demand Response Controls for HVAC Systems

    E-Print Network [OSTI]

    Federspiel, Clifford

    2010-01-01

    conditioning. Figure 2: Wireless discharge air temperatureWireless Demand Response Controls for HVAC Systems Cliffordcontrol software and wireless hardware that could enable

  4. Software Quality Assurance Control of Existing Systems

    Energy Savers [EERE]

    one based on software maintenance and another detailing a baseline recovery strategy are included. SQA Control of Existing Systems SQAS22.01.00-2002 Acknowledgments The...

  5. Ris Energy Report 4 System control and communication 4 9 System control and communication

    E-Print Network [OSTI]

    , but the operators did not recognise this. Two hours later, just before the collapse, the energy management systemRisř Energy Report 4 System control and communication 4 9 System control and communication HENRIK b the operators being aware of it. These two fail- ures of the monitoring and control system were the major

  6. Controlled transitions between cupolets of chaotic systems

    SciTech Connect (OSTI)

    Morena, Matthew A. Short, Kevin M.; Cooke, Erica E.

    2014-03-15

    We present an efficient control scheme that stabilizes the unstable periodic orbits of a chaotic system. The resulting orbits are known as cupolets and collectively provide an important skeleton for the dynamical system. Cupolets exhibit the interesting property that a given sequence of controls will uniquely identify a cupolet, regardless of the system's initial state. This makes it possible to transition between cupolets, and thus unstable periodic orbits, simply by switching control sequences. We demonstrate that although these transitions require minimal controls, they may also involve significant chaotic transients unless carefully controlled. As a result, we present an effective technique that relies on Dijkstra's shortest path algorithm from algebraic graph theory to minimize the transients and also to induce certainty into the control of nonlinear systems, effectively providing an efficient algorithm for the steering and targeting of chaotic systems.

  7. Laser Inertial Fusion Energy Control Systems

    SciTech Connect (OSTI)

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

    2011-03-18

    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.

  8. Using Building Control System for Commissioning 

    E-Print Network [OSTI]

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

    2004-01-01

    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...

  9. Robust adaptive control of switched systems

    E-Print Network [OSTI]

    El-Rifai, Khalid, 1979-

    2007-01-01

    In this thesis, robust adaptive controllers are developed for classes of switched nonlinear systems. Switched systems are those governed by differential equations, which undergo vector field switching due to sudden changes ...

  10. Networked control systems: a perspective from chaos

    E-Print Network [OSTI]

    Guofeng Zhang; Tongwen Chen

    2014-05-10

    In this paper, a nonlinear system aiming at reducing the signal transmission rate in a networked control system is constructed by adding nonlinear constraints to a linear feedback control system. Its stability is investigated in detail. It turns out that this nonlinear system exhibits very interesting dynamical behaviors: in addition to local stability, its trajectories may converge to a non-origin equilibrium or be periodic or just be oscillatory. Furthermore it exhibits sensitive dependence on initial conditions --- a sign of chaos. Complicated bifurcation phenomena are exhibited by this system. After that, control of the chaotic system is discussed. All these are studied under scalar cases in detail. Some difficulties involved in the study of this type of systems are analyzed. Finally an example is employed to reveal the effectiveness of the scheme in the framework of networked control systems.

  11. Ground controlled precision landing delivery in the presence of radar disturbances

    E-Print Network [OSTI]

    Durocher, Cort Louis

    1977-01-01

    Introduction: The purpose of Air Traffic Control is to ensure separation of aircraft in the most efficient manner possible. The need for efficiency is becoming more important as air traffic continues to increase at a high ...

  12. Transport control in deterministic ratchet system

    E-Print Network [OSTI]

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

    2006-12-17

    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.

  13. Applications of Feedback Control in Quantum Systems

    E-Print Network [OSTI]

    Kurt Jacobs

    2006-05-02

    We give an introduction to feedback control in quantum systems, as well as an overview of the variety of applications which have been explored to date. This introductory review is aimed primarily at control theorists unfamiliar with quantum mechanics, but should also be useful to quantum physicists interested in applications of feedback control. We explain how feedback in quantum systems differs from that in traditional classical systems, and how in certain cases the results from modern optimal control theory can be applied directly to quantum systems. In addition to noise reduction and stabilization, an important application of feedback in quantum systems is adaptive measurement, and we discuss the various applications of adaptive measurements. We finish by describing specific examples of the application of feedback control to cooling and state-preparation in nano-electro-mechanical systems and single trapped atoms.

  14. A Nonpolycationic Fully Proteinaceous Multiagent System for Potent Targeted Delivery of siRNA

    E-Print Network [OSTI]

    Liu, David V.

    Protein-based methods of targeted short-interfering RNA (siRNA) delivery have the potential to solve some of the problems faced by nanoparticle-based methods, such as poor pharmacokinetics and biodistribution, low tumor ...

  15. Modeling of Lean Exhaust Emissions Control Systems | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lean Exhaust Emissions Control Systems Modeling of Lean Exhaust Emissions Control Systems 2002 DEER Conference Presentation: National Renewable Energy Laboratory...

  16. Teaching the Environment to Control Quantum Systems

    E-Print Network [OSTI]

    Alexander Pechen; Herschel Rabitz

    2006-09-12

    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.

  17. Information in coordinated system control

    E-Print Network [OSTI]

    Kang, Keunmo

    2008-01-01

    and Control’. Limon, D. , Alamo, T. & Camacho, E. F. (Limon, D. , Alvarado, I. , Alamo, T. & Camacho, E. (2005),D. , Gomes da Silva, J. , Alamo, T. & Camacho, E. F. (2003),

  18. Control method for physical systems and devices

    DOE Patents [OSTI]

    Guckenheimer, John (Ithaca, NY)

    1997-01-01

    A control method for stabilizing systems or devices that are outside the control domain of a linear controller is provided. When applied to nonlinear systems, the effectiveness of this method depends upon the size of the domain of stability that is produced for the stabilized equilibrium. If this domain is small compared to the accuracy of measurements or the size of disturbances within the system, then the linear controller is likely to fail within a short period. Failure of the system or device can be catastrophic: the system or device can wander far from the desired equilibrium. The method of the invention presents a general procedure to recapture the stability of a linear controller, when the trajectory of a system or device leaves its region of stability. By using a hybrid strategy based upon discrete switching events within the state space of the system or device, the system or device will return from a much larger domain to the region of stability utilized by the linear controller. The control procedure is robust and remains effective under large classes of perturbations of a given underlying system or device.

  19. ITER HEAT REMOVAL SYSTEM SYSTEM & PROCESS CONTROL DESIGN

    E-Print Network [OSTI]

    Raffray, A. René

    in-vessel component cooling systems malfunction. Therefore, special design criteria are requestedITER HEAT REMOVAL SYSTEM SYSTEM & PROCESS CONTROL DESIGN Y. Hoshi 1 , Y. Kataoka 2 , V. Tanchuk 1 the vacuum vessel cooling system has a safety role of providing the ultimate decay heat removal system ,when

  20. Implementation of a Project Management System for Improvement to City, State's Design and Construction Capital Project Delivery

    E-Print Network [OSTI]

    Thompson, Chad C.

    2007-05-18

    than 400 projects with budgets of over a half billion dollars. It has shifted the capital improvement project delivery from a “multi-departmental” style of delivery to a “project management” style of delivery through the infusion of private consultants...

  1. A new control system for SECRAL

    E-Print Network [OSTI]

    Su, JianJun; Wang, YanYu; Zhou, WenXiong

    2015-01-01

    To improve the control efficiency of Superconducting Electron Cyclotron Resonance Ion source(SECRAL) for Heavy Ion Research Facility in Lanzhou(HIRFL), a upgrade version of control system for SECRAL is designed and set up. The control software package is developed by Visual C++, which is able to control and monitor all of the equipment for the SECRAL system about 130 parameters. The previous analog power supplies are replaced by four digital power units at High Voltage(HV) platform, The old slow speed of AC motors are upgraded to servo motors newly for higher precision, stability and linearity. Meanwhile, some control strategy and user interface are optimized. In order to prevent the incorrect operation which may cause the quench of the superconducting magnet, alarm and interlock protection functions are added to the software and hardware. Since the upgraded SECRAL control system is online, it has been running smoothly.

  2. Feedwater temperature control methods and systems

    DOE Patents [OSTI]

    Moen, Stephan Craig; Noonan, Jack Patrick; Saha, Pradip

    2014-04-22

    A system for controlling the power level of a natural circulation boiling water nuclear reactor (NCBWR) is disclosed. The system, in accordance with an example embodiment of the present invention, may include a controller configured to control a power output level of the NCBWR by controlling a heating subsystem to adjust a temperature of feedwater flowing into an annulus of the NCBWR. The heating subsystem may include a steam diversion line configured to receive steam generated by a core of the NCBWR and a steam bypass valve configured to receive commands from the controller to control a flow of the steam in the steam diversion line, wherein the steam received by the steam diversion line has not passed through a turbine. Additional embodiments of the invention may include a feedwater bypass valve for controlling an amount of flow of the feedwater through a heater bypass line to the annulus.

  3. Daylight control system, device and method

    SciTech Connect (OSTI)

    Paton, John Douglas

    2012-08-28

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  4. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2009-12-01

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  5. Daylight control system device and method

    DOE Patents [OSTI]

    Paton, John Douglas

    2007-03-13

    A system and device for and a method of programming and controlling light fixtures is disclosed. A system in accordance with the present invention includes a stationary controller unit that is electrically coupled to the light fixtures. The stationary controller unit is configured to be remotely programmed with a portable commissioning device to automatically control the lights fixtures. The stationary controller unit and the portable commissioning device include light sensors, micro-computers and transceivers for measuring light levels, running programs, storing data and transmitting data between the stationary controller unit and the portable commissioning device. In operation, target light levels selected with the portable commissioning device and the controller unit is remotely programmed to automatically maintain the target level.

  6. Load frequency control of interconnected power systems with system constraints 

    E-Print Network [OSTI]

    Choudhury, Md Ershadul H

    1993-01-01

    So far, researches in load frequency controls ( LFC) are involved in analysis of dynamic responses under normal conditions of the - interconnected power systems. In This research considers some system constraints (for example, one area fails...

  7. System and method for controlling microgrid

    DOE Patents [OSTI]

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

    2011-07-19

    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.

  8. WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST

    E-Print Network [OSTI]

    WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST Yutaka Iino* Takeshi for wireless sensor network based control system, minimizing communication energy consumption. Some control, wireless sensor network technology has been developed rapidly, and various applications to control system

  9. Design of Control Systems for HVAC Applications 

    E-Print Network [OSTI]

    Smith, A. L.

    1984-01-01

    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...

  10. 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

  11. LNG fire and vapor control system technologies

    SciTech Connect (OSTI)

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

    1982-06-01

    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.

  12. System for controlling a hybrid energy system

    DOE Patents [OSTI]

    Hoff, Brian D.; Akasam, Sivaprasad

    2013-01-29

    A method includes identifying a first operating sequence of a repeated operation of at least one non-traction load. The method also includes determining first and second parameters respectively indicative of a requested energy and output energy of the at least one non-traction load and comparing the determined first and second parameters at a plurality of time increments of the first operating sequence. The method also includes determining a third parameter of the hybrid energy system indicative of energy regenerated from the at least one non-traction load and monitoring the third parameter at the plurality of time increments of the first operating sequence. The method also includes determining at least one of an energy deficiency or an energy surplus associated with the non-traction load of the hybrid energy system and selectively adjusting energy stored within the storage device during at least a portion of a second operating sequence.

  13. Investigation of expert system application to spacecraft power system control

    SciTech Connect (OSTI)

    Pistole, C.; Bein, J.

    1984-08-01

    This paper addresses the application of expert systems to spacecraft power system control through investigation of two salient technical issues. These are the maximum speed of an expert system, and interaction between the expert system and transient phenomena. The basis of this discussion will be test data obtained through development of the Fault Isolation Expert System (FIES) at Martin Marietta Aerospace Denver. The expert system was tested to determine the minimum time required to clear a power system fault. This response time will be compared to conventional fault handling techniques, and analyzed to determine the maximum bandwidth of the system to be controlled. The second issue to be investigated is the relationship between expert system speed and power system transients. Specifically, FIES is intended to deal with quasi steady state inputs only. Therefore, expert system inputs must be filtered to eliminate the interaction between the expert system and transient phenomena. This paper will discuss the considerations involved in the tailoring of inputs.

  14. Power control system and method

    DOE Patents [OSTI]

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

    2008-02-19

    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.

  15. Power control system and method

    DOE Patents [OSTI]

    Steigerwald, Robert Louis; Anderson, Todd Alan

    2006-11-07

    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.

  16. UMTRA Project document control system manual

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This manual defines the Project Document Control System (PDCS) operated by the US DOE Uranium Mill tailings Remedial Action (UMTRA) project Office. The purpose of the PDCS is to provide an active and continuing program for acquiring, controlling, retaining, retrieving, retiring and disposing of all UMTRA Project documents. The PDCS also provides guidance and coordination in transferring documents by various UMTRA Projection document control centers to a central location.

  17. Randomized control of open quantum systems

    E-Print Network [OSTI]

    Lorenza Viola

    2006-01-16

    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.

  18. Control Systems Cyber Security Standards Support Activities

    SciTech Connect (OSTI)

    Robert Evans

    2009-01-01

    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.

  19. Variable emissivity laser thermal control system

    DOE Patents [OSTI]

    Milner, Joseph R. (Livermore, CA)

    1994-01-01

    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.

  20. On Cyber Security for Networked Control Systems

    E-Print Network [OSTI]

    Amin, Saurabh

    2011-01-01

    myths and facts behind cyber security risks for industrialJ. and Hieb, J. [2007], ‘Cyber security risk assessment forOn Cyber Security for Networked Control Systems by Saurabh

  1. Artificial Immune System based urban traffic control 

    E-Print Network [OSTI]

    Negi, Pallav

    2007-09-17

    Borrowing ideas from natural immunity, Artificial Immune Systems (AIS) offer a novel approach to solving many diagnosis, optimization and control problems. In the course of this research this paradigm was applied to the problem of optimizing urban...

  2. Co-Simulation of Building Energy and Control Systems with the Building Controls Virtual Test Bed

    E-Print Network [OSTI]

    Wetter, Michael

    2012-01-01

    their control and energy management systems. ASHRAE Trans-schedules, Energy Management System (EMS) actuator objects

  3. Advanced control and information systems `97

    SciTech Connect (OSTI)

    NONE

    1997-09-01

    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.

  4. Distributionally robust control of constrained stochastic systems

    E-Print Network [OSTI]

    2013-05-01

    The proposed methods are illustrated for a wind turbine blade control design case .... function L, the severity of constraint violation in the ? percent of the worst cases ..... When choosing a control policy for the system S, we will require that it be ... as (16), even for convex loss functions L, seem hard to deal with directly when.

  5. EVALUATION OF BEST AVAILABLE CONTROL TECHNOLOGY FOR TOXICS -TBACT- DOUBLE SHELL TANK FARMS PRIMARY VENTILATION SYSTEMS SUPPORTING WASTE TRANSFER OPERATIONS

    SciTech Connect (OSTI)

    HAAS CC; KOVACH JL; KELLY SE; TURNER DA

    2010-06-24

    This report is an evaluation of Best Available Control Technology for Toxics (tBACT) for installation and operation of the Hanford double shell (DST) tank primary ventilation systems. The DST primary ventilation systems are being modified to support Hanford's waste retrieval, mixing, and delivery of single shell tank (SST) and DST waste through the DST storage system to the Waste Treatment and Immobilizaiton Plant (WTP).

  6. EVALUATION OF BEST AVAILABLE CONTROL TECHNOLOGY FOR TOXICS (TBACT) DOUBLE SHELL TANK FARMS PRIMARY VENTILATION SYSTEM SUPPORTING WASTE TRANSFER OPERATIONS

    SciTech Connect (OSTI)

    KELLY SE; HAASS CC; KOVACH JL; TURNER DA

    2010-06-03

    This report is an evaluation of Best Available Control Technology for Toxics (tBACT) for installation and operation of the Hanford double shell (DST) tank primary ventilation systems. The DST primary ventilation systems are being modified to support Hanford's waste retrieval, mixing, and delivery of single shell tank (SST) and DST waste throught the DST storage system to the Waste Treatment and Immobilization Plant (WTP).

  7. Parasitic load control system for exhaust temperature control

    DOE Patents [OSTI]

    Strauser, Aaron D. (Washington, IL); Coleman, Gerald N. (Peterborough, GB); Coldren, Dana R. (Fairbury, IL)

    2009-04-28

    A parasitic load control system is provided. The system may include an exhaust producing engine and a fuel pumping mechanism configured to pressurize fuel in a pressure chamber. The system may also include an injection valve configured to cause fuel pressure to build within the pressure chamber when in a first position and allow injection of fuel from the pressure chamber into one or more combustion chambers of the engine when in a second position. The system may further include a controller configured to independently regulate the pressure in the pressure chamber and the injection of fuel into the one or more combustion chambers, to increase a load on the fuel pumping mechanism, increasing parasitic load on the engine, thereby increasing a temperature of the exhaust produced by the engine.

  8. Time-optimal Control of Spin Systems

    E-Print Network [OSTI]

    Jan Swoboda

    2006-01-19

    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.

  9. LED lamp color control system and method

    DOE Patents [OSTI]

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

    2013-02-05

    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.

  10. Passive environmental temperature control system

    DOE Patents [OSTI]

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

    1981-01-01

    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.

  11. Superconductivity for Electric Systems

    E-Print Network [OSTI]

    Superconductivity Program Oak Ridge National Laboratory For: Department of Energy Office of Electricity Delivery and Energy Reliability ­ Superconductivity for Electric Systems #12;3 Control Milestones and Status ControlSuperconductivity for Electric Systems Superconductivity Program Quarterly Progress Report

  12. Secure control systems with application to cyber-physical systems

    SciTech Connect (OSTI)

    Dong, Jin; Djouadi, Seddik M; Nutaro, James J; Kuruganti, Phani Teja

    2014-01-01

    Control systems are computer-based systems with networked units consisting of sensors, actuators, control processing units, and communication devices. The role of control system is to interact, monitor, and control physical processes. Reactive power control is a fundamental issue in ensuring the security of the power network. It is claimed that Synchronous Condensers (SC) have been used at both distribution and transmission voltage levels to improve stability and to maintain voltages within desired limits under changing load conditions and contingency situations. Performance of PI controller corresponding to various tripping faults are analyzed for SC systems. Most of the eort in protecting these systems has been in protection against random failures or reliability. However, besides failures these systems are subject to various signal attacks for which new analysis are discussed here. When a breach does occur, it is necessary to react in a time commensurate with the physical dynamics of the system as it responds to the attack. Failure to act swiftly enough may result in undesirable, and possibly irreversible, physical eects. Therefore, it is meaningful to evaluate the security of a cyber-physical system, especially to protect it from cyber-attack. Illustrative numerical examples are provided together with an application to the SC systems.

  13. Control system for supercharged internal combustion engine

    SciTech Connect (OSTI)

    Kawamura, H.

    1988-05-24

    A control system for controlling an internal combustion engine is described having a supercharge including a rotatable shaft and an exhaust turbine driven by exhaust gas. The control system comprising: a rotary electric machine mounted on the rotatable shaft of the supercharger for imposing a load on the exhaust turbine of the supercharger; setting means for setting an engine brake mode of the internal combustion engine; and operating means for operating the rotary electric machine when the engine brake mode is set by the setting means.

  14. Control of chaotic transport in Hamiltonian systems

    E-Print Network [OSTI]

    Guido Ciraolo; Cristel Chandre; Ricardo Lima; Michel Vittot; Marco Pettini; Charles Figarella; Philippe Ghendrih

    2003-06-24

    It is shown that a relevant control of Hamiltonian chaos is possible through suitable small perturbations whose form can be explicitly computed. In particular, it is possible to control (reduce) the chaotic diffusion in the phase space of a Hamiltonian system with 1.5 degrees of freedom which models the diffusion of charged test particles in a ``turbulent'' electric field across the confining magnetic field in controlled thermonuclear fusion devices. Though still far from practical applications, this result suggests that some strategy to control turbulent transport in magnetized plasmas, in particular tokamaks, is conceivable.

  15. Apatite-Polymer Composites for the Controlled Dual Delivery of BMP-2 and BMP-6 for Bone Tissue Engineering

    E-Print Network [OSTI]

    Yong, Tseh-Hwan

    The release of growth factors from tissue engineering scaffolds provides signals that influence the migration, differentiation, and proliferation of cells. The incorporation of a drug delivery platform that is capable of ...

  16. Bipartite entanglement and control in multiqubit systems

    E-Print Network [OSTI]

    Toshihiro Iwai; Yoshiro Yabu

    2009-01-31

    The effect of the control on bipartite entanglement is discussed from a geometric viewpoint for a nuclear magnetic resonance (NMR) system as a model of the n-qubit control system. The Hamiltonian of the model is the sum of the drift and control Hamiltonians, each of which describes the interaction between pairs of qubits and between one of qubits and an external magnetic field, respectively. According to a bipartite partition, the Schroedinger equation for the NMR system is put in the matrix form. This paper gives a solution to the Schroedinger equation with the assumptions of small coupling among qubits and of constant controls. The solution is put in the form of power series in small parameters. In particular, in the case of the two-qubit NMR system, the drift and control Hamiltonians are shown to be coupled to work for entanglement promotion, by examining solutions to the Schroedinger equation in detail. The concurrence, a measure of entanglement, is evaluated along the solution for a small time interval in order to observe that the control effect appears, not at the first-order terms in t, but at the higher-order terms in t. The evaluated concurrence also suggests which control makes the two-qubit more entangled or less.

  17. Wireless Demand Response Controls for HVAC Systems

    SciTech Connect (OSTI)

    Federspiel, Clifford

    2009-06-30

    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.

  18. Subsea control system undergoes qualification test

    SciTech Connect (OSTI)

    Lia, A.

    1996-10-01

    The booming market for subsea equipment has spawned the development of new control technologies. Proper testing is required before incorporating these new systems in production applications. In early 1996, French firm ECA began a 6-month test of a lightweight subsea control system at the offshore premises of Frame Engineering in Bergen, Norway. The purpose of the 6-month experiment is to test the various components of a control system. These include the tele-operated valve (TOV), a 66-lb (30-kg) module which provides electrohydraulic control of a Christmas tree, the subsea hydro-electric pump (HPU), the electrical inductively coupled link which provides power and data transmission on a single wire cable, and the subsea mateable optical connector.

  19. Alarm system for a nuclear control complex

    DOE Patents [OSTI]

    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)

    1994-01-01

    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.

  20. Stochastic Control Analysis for Biochemical Reaction Systems

    E-Print Network [OSTI]

    Kyung Hyuk Kim; Herbert M. Sauro

    2009-08-21

    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 $\\epsilon$.

  1. Comparison of Routable Control System Security Approaches

    SciTech Connect (OSTI)

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

    2011-06-01

    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.

  2. Security Controls for Unclassified Information Systems Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2009-01-05

    The Manual establishes minimum implementation standards for cyber security technical, management, and operational controls that will be followed in all information systems operated by DOE and the information systems. Admin Chg 1 dated 9-1-09. Canceled by DOE O 205.1B.

  3. Security Controls for Unclassified Information Systems Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2009-01-05

    The Manual establishes minimum implementation standards for cyber security technical, management, and operational controls that will be followed in all information systems operated by DOE and the information systems. Does not cancel other directives. Canceled by DOE O 205.1B

  4. Security Controls for Unclassified Information Systems Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2009-01-05

    The Manual establishes minimum implementation standards for cyber security technical, management, and operational controls that will be followed in all information systems operated by DOE and the information systems. Admin Chg 1 dated 9-1-09; Admin Chg 2 dated 12-22-09. Canceled by DOE O 205.1B.

  5. NSTX-U Control System Upgrades

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Erickson, K. G.; Gates, D. A.; Gerhardt, S. P.; Lawson, J. E.; Mozulay, R.; Sichta, P.; Tchilinguirian, G. J.

    2014-06-01

    The National Spherical Tokamak Experiment (NSTX) is undergoing a wealth of upgrades (NSTX-U). These upgrades, especially including an elongated pulse length, require broad changes to the control system that has served NSTX well. A new fiber serial Front Panel Data Port input and output (I/O) stream will supersede the aging copper parallel version. Driver support for the new I/O and cyber security concerns require updating the operating system from Redhat Enterprise Linux (RHEL) v4 to RedHawk (based on RHEL) v6. While the basic control system continues to use the General Atomics Plasma Control System (GA PCS), the effort to forward port the entire software package to run under 64-bit Linux instead of 32-bit Linux included PCS modifications subsequently shared with GA and other PCS users. Software updates focused on three key areas: (1) code modernization through coding standards (C99/C11), (2) code portability and maintainability through use of the GA PCS code generator, and (3) support of 64-bit platforms. Central to the control system upgrade is the use of a complete real time (RT) Linux platform provided by Concurrent Computer Corporation, consisting of a computer (iHawk), an operating system and drivers (RedHawk), and RT tools (NightStar). Strong vendor support coupled with an extensive RT toolset influenced this decision. The new real-time Linux platform, I/O, and software engineering will foster enhanced capability and performance for NSTX-U plasma control.

  6. Waste receiving and processing plant control system; system design description

    SciTech Connect (OSTI)

    LANE, M.P.

    1999-02-24

    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.

  7. Motivation to study security of control systems. Our Results/Contribution. Summary. Security constrained control under

    E-Print Network [OSTI]

    Hu, Fei

    Motivation to study security of control systems. Our Results/Contribution. Summary. Security Secure control systems UC Berkeley #12;Motivation to study security of control systems. Our Results/Contribution. Summary. Outline. Motivation to study security of control systems. Distributed control systems

  8. Mechanical loading impacts intramuscular drug transport : impact on local drug delivery

    E-Print Network [OSTI]

    Wu, Peter I-Kung

    2008-01-01

    Controlled-release drug-delivery systems enable efficient and defined administration of therapeutic agents to target tissues. However, ultimate drug distribution and pharmacologic effect are determined by target tissue ...

  9. Control system for a vertical axis windmill

    DOE Patents [OSTI]

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

    1983-10-18

    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.

  10. Output Feedback Control and Optimal Bandwidth Allocation of Networked Control Systems 

    E-Print Network [OSTI]

    Dong, Jiawei

    2013-04-12

    A networked control system (NCS) is a control system where sensors, actuators, and controllers are interconnected over a communication network. This dissertation presents a framework for modeling, stability analysis, optimal control, and bandwidth...

  11. Genetically designed biomolecular capping system for mesoporous silica nanoparticles enables receptor-mediated cell uptake and controlled drug release

    E-Print Network [OSTI]

    Stefan Datz; Christian Argyo; Michael Gattner; Veronika Weiss; Korbinian Brunner; Johanna Bretzler; Constantin von Schirnding; Fabio Spada; Hanna Engelke; Milan Vrabel; Christoph Bräuchle; Thomas Carell; Thomas Bein

    2015-10-13

    Effective and controlled drug delivery systems with on-demand release and targeting abilities have received enormous attention for biomedical applications. Here, we describe a novel enzyme-based cap system for mesoporous silica nanoparticles (MSNs) that is directly combined with a targeting ligand via bio-orthogonal click chemistry. The capping system is based on the pH-responsive binding of an aryl-sulfonamide-functionalized MSN and the enzyme carbonic anhydrase (CA). An unnatural amino acid (UAA) containing a norbornene moiety was genetically incorporated into CA. This UAA allowed for the site-specific bio-orthogonal attachment of even very sensitive targeting ligands such as folic acid and anandamide. This leads to specific receptor-mediated cell and stem cell uptake. We demonstrate the successful delivery and release of the chemotherapeutic agent Actinomycin D to KB cells. This novel nanocarrier concept provides a promising platform for the development of precisely controllable and highly modular theranostic systems.

  12. Actively controlled vibration welding system and method

    DOE Patents [OSTI]

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

    2013-04-02

    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.

  13. Chapter 18. The E821 Slow Control System

    E-Print Network [OSTI]

    Brookhaven National Laboratory - Experiment 821

    Chapter 18. The E­821 Slow Control System Revised March 1994 18.1. Introduction The (g \\Gamma 2 system when they can. The slow control system then logs status information or trouble reports. The local control loops also have priority over control signals sent down to them from the slow control system

  14. A hierarchal multilevel microprocessor control system 

    E-Print Network [OSTI]

    Teverbaugh, Larry D

    1979-01-01

    A HIERARCHAL MJLTILEVEL MICROPROCESSOR CONTROL SYSTFA A Thesis LARRY D. TEVERBAUGH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MSTER OF SCIENCE May 1979 Major Subject...: Electri. cal Engineering A HIERARCHAL MULTILEVEL MICROPROCESSOR CONTROL SYSTEM A Thesis by LARRY D. TEVERBAUGH Approved as to style and content by: (Chairman of Committee) (Head f Depa ment) (Member (Member) (Member) (Member) May j979 ABSTRACT...

  15. AVLIS Laser Data Acquisition and Control System

    SciTech Connect (OSTI)

    Gill, T.E.

    1986-01-01

    The AVLIS Laser Data Acquisition and Control System provides an integrated hardware and software package which controls up to five diagnostic lasers and automatic and manual data acquisition and reduction subsystems being used to analyze uranium vapor density in the Atomic Vapor Laser Isotope Separation (AVLIS) separation vessel in Oak Ridge, Tennessee. This paper discusses acquisition of critical real-time and post-run vapor density data.

  16. Reactor control rod timing system. [LMFBR

    DOE Patents [OSTI]

    Wu, P.T.K.

    1980-03-18

    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.

  17. National SCADA Test Bed - Enhancing control systems security...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    National SCADA Test Bed - Enhancing control systems security in the energy sector (September 2009) National SCADA Test Bed - Enhancing control systems security in the energy sector...

  18. Small- and Medium-Size Building Automation and Control System...

    Energy Savers [EERE]

    Small- and Medium-Size Building Automation and Control System Needs: Scoping Study Small- and Medium-Size Building Automation and Control System Needs: Scoping Study Emerging...

  19. "Supervisory Control and Data Acquisition (SCADA) Systems." The...

    Office of Environmental Management (EM)

    "Supervisory Control and Data Acquisition (SCADA) Systems." The CIP Report. Vol 7 No 8 "Supervisory Control and Data Acquisition (SCADA) Systems." The CIP Report. Vol 7 No 8...

  20. TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED MITIGATIONS TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED MITIGATIONS This document provides...

  1. Advanced HD Engine Systems and Emissions Control Modeling and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    HD Engine Systems and Emissions Control Modeling and Analysis Advanced HD Engine Systems and Emissions Control Modeling and Analysis 2012 DOE Hydrogen and Fuel Cells Program and...

  2. Advanced LD Engine Systems and Emissions Control Modeling and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LD Engine Systems and Emissions Control Modeling and Analysis Advanced LD Engine Systems and Emissions Control Modeling and Analysis 2012 DOE Hydrogen and Fuel Cells Program and...

  3. Top 10 Vulnerabilities of Control Systems and Their Associated...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) Top 10 Vulnerabilities of Control Systems and Their Associated Migitations (2006) This document...

  4. Advanced PHEV Engine Systems and Emissions Control Modeling and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PHEV Engine Systems and Emissions Control Modeling and Analysis Advanced PHEV Engine Systems and Emissions Control Modeling and Analysis 2011 DOE Hydrogen and Fuel Cells Program,...

  5. Simplification of Diesel Emission Control System Packaging Using...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Simplification of Diesel Emission Control System Packaging Using SCR Coated on DPF Simplification of Diesel Emission Control System Packaging Using SCR Coated on DPF Study...

  6. Reference Model for Control and Automation Systems in Electrical...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Model for Control and Automation Systems in Electrical Power (October 2005) Reference Model for Control and Automation Systems in Electrical Power (October 2005) Modern...

  7. Experimental Studies for DPF and SCR Model, Control System, and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DPF and SCR Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels Experimental Studies for DPF and SCR Model, Control System, and OBD...

  8. Roadmap to Secure Control Systems in the Energy: Executive Summary...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap to Secure Control Systems in the Energy: Executive Summary - 2006 Roadmap to Secure Control Systems in the Energy: Executive Summary - 2006 This document, the Roadmap to...

  9. Roadmap to Secure Control Systems in the Energy Sector - January...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap to Secure Control Systems in the Energy Sector - January 2006 Roadmap to Secure Control Systems in the Energy Sector - January 2006 This document, the Roadmap to Secure...

  10. Variable temperature seat climate control system

    DOE Patents [OSTI]

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

    1997-05-06

    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.

  11. INTEGRATED CONTROL OF NEXT GENERATION POWER SYSTEM

    SciTech Connect (OSTI)

    2010-02-28

    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.

  12. Control of pore size in epoxy systems.

    SciTech Connect (OSTI)

    Sawyer, Patricia Sue; Lenhart, Joseph Ludlow (North Dakota State University, Fargo, ND); Lee, Elizabeth (North Dakota State University, Fargo, ND); Kallam, Alekhya (North Dakota State University, Fargo, ND); Majumdar, Partha (North Dakota State University, Fargo, ND); Dirk, Shawn M.; Gubbins, Nathan; Chisholm, Bret J. (North Dakota State University, Fargo, ND); Celina, Mathias Christopher; Bahr, James (North Dakota State University, Fargo, ND); Klein, Robert J.

    2009-01-01

    Both conventional and combinatorial approaches were used to study the pore formation process in epoxy based polymer systems. Sandia National Laboratories conducted the initial work and collaborated with North Dakota State University (NDSU) using a combinatorial research approach to produce a library of novel monomers and crosslinkers capable of forming porous polymers. The library was screened to determine the physical factors that control porosity, such as porogen loading, polymer-porogen interactions, and polymer crosslink density. We have identified the physical and chemical factors that control the average porosity, pore size, and pore size distribution within epoxy based systems.

  13. Secure and Efficient Routable Control Systems

    SciTech Connect (OSTI)

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

    2010-05-01

    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.

  14. Timed Relational Abstractions For Sampled Data Control Systems

    E-Print Network [OSTI]

    Sankaranarayanan, Sriram

    Timed Relational Abstractions For Sampled Data Control Systems Aditya Zutshi1 , Sriram relational abstractions for verifying sampled data control systems. Sampled data control systems consist of a plant, modeled as a hybrid system and a synchronous controller, modeled as a discrete transition system

  15. Chaos and Control in Nonlinear Bloch System

    E-Print Network [OSTI]

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

    2005-01-03

    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.

  16. NSTX-U Control System Upgrades

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Erickson, K. G.; Gates, D. A.; Gerhardt, S. P.; Lawson, J. E.; Mozulay, R.; Sichta, P.; Tchilinguirian, G. J.

    2014-06-01

    The National Spherical Tokamak Experiment (NSTX) is undergoing a wealth of upgrades (NSTX-U). These upgrades, especially including an elongated pulse length, require broad changes to the control system that has served NSTX well. A new fiber serial Front Panel Data Port input and output (I/O) stream will supersede the aging copper parallel version. Driver support for the new I/O and cyber security concerns require updating the operating system from Redhat Enterprise Linux (RHEL) v4 to RedHawk (based on RHEL) v6. While the basic control system continues to use the General Atomics Plasma Control System (GA PCS), the effort to forwardmore »port the entire software package to run under 64-bit Linux instead of 32-bit Linux included PCS modifications subsequently shared with GA and other PCS users. Software updates focused on three key areas: (1) code modernization through coding standards (C99/C11), (2) code portability and maintainability through use of the GA PCS code generator, and (3) support of 64-bit platforms. Central to the control system upgrade is the use of a complete real time (RT) Linux platform provided by Concurrent Computer Corporation, consisting of a computer (iHawk), an operating system and drivers (RedHawk), and RT tools (NightStar). Strong vendor support coupled with an extensive RT toolset influenced this decision. The new real-time Linux platform, I/O, and software engineering will foster enhanced capability and performance for NSTX-U plasma control.« less

  17. Fuel control system for a carburetor

    SciTech Connect (OSTI)

    Herd, W.H. Jr.; Hensen, J.W.

    1987-05-05

    A fuel control system is described for a carburetor having a housing defining a throat through which air and fuel are drawn. The carburetor has pivotally positionable venturi plates disposed in the throat of the carburetor; a reservoir; nozzle bar; and fuel supply connected in fluid-flow relation. The fuel control system comprises: a primary restrictor, the restrictor defining a passage of predetermined cross-sectional area. The restrictor leading to a conduit connects the reservoir, primary restrictor and nozzle bar in fluid-flow relation; a primary adjustable jet has a screw-threadable adjustment member that controls the amount of fuel that is provided from the adjustable jet to the carburetor nozzle bar. The adjustment member has a conical forward end which engages a peripheral seat defining an annular flow passage when the adjustment member is displaced from the seat. A secondary restrictor connects in fluid-flow relation between the reservoir and the nozzle bar.

  18. Method and system for controlled combustion engines

    DOE Patents [OSTI]

    Oppenheim, A. K. (Berkeley, CA)

    1990-01-01

    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.

  19. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, James M. (Union Lake, MI); Sereshteh, Ahmad (Union Lake, MI)

    1988-01-01

    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 thetorque commands applied to the motor.

  20. Variable emissivity laser thermal control system

    DOE Patents [OSTI]

    Milner, J.R.

    1994-10-25

    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.

  1. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30

    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.

  2. Innovative Office Lighting System with Integrated Spectrally...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    an innovative LED office lighting system solution that integrates light delivery, optics, and controls for energy efficiency and occupant health and well-being. The office...

  3. ForPeerReview SMC Framework in Motion Control Systems

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    ForPeerReview SMC Framework in Motion Control Systems Journal: International Journal of Adaptive, Mechatronics Keywords: Motion Control, Sliding Mode Control, Bilateral Control , Interconnected Systems http acsauth.cls [Version: 2002/11/11 v1.00] SMC Framework in Motion Control Systems A. S¸abanovi¸c Sabanci

  4. Software diversity in computerized control systems

    SciTech Connect (OSTI)

    Voges, U.

    1988-01-01

    This book deals with the most important aspects of software diversity and its use in computerized control systems, including theoretical background, experiments, and industrial realizations (railway, flight and nuclear applications). Researchers describe their experiments with software diversity and explain their results, including benefits and drawbacks. Practitioners explain their use of it in real systems: why they use this means of fault-tolerance, and how they incorporate it into their systems. In addition to the papers the book contains a rather complete list of publications giving an overview on references about software diversity from its beginning until today.

  5. Recommended Practice for Securing Control System Modems

    SciTech Connect (OSTI)

    James R. Davidson; Jason L. Wright

    2008-01-01

    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.

  6. System Description for the K-25/K-27 D&D Project Polyurethane Foam Delivery System, East Tennessee Technology Park, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    Boris, G.

    2008-02-21

    The Foam Delivery System used in the decontamination and decommissioning (D&D) project for the K-25/K-27 Buildings at the East Tennessee Technology Park (ETTP) is comprised of a trailer-mounted Gusmer{reg_sign} H20/35 Pro-TEC Proportioning Unit and the associated equipment to convey electrical power, air, and foam component material to the unit. This high-pressure, plural-component polyurethane foam pouring system will be used to fill process gas and non-process equipment/piping (PGE/P) within the K-25/K-27 Buildings with polyurethane foam to immobilize contaminants prior to removal. The system creates foam by mixing isocyanate and polyol resin (Resin) component materials. Currently, the project plans to utilize up to six foaming units simultaneously during peak foaming activities. Also included in this system description are the foam component material storage containers that will be used for storage of the component material drums in a staging area outside of the K-25/K-27 Buildings. The Foam Delivery System and foam component material storage enclosures (i.e., Foaming Component Protective Enclosures) used to store polymeric methylene diphenyl diisocyanate (PMDI) component material are identified as Safety Significant (SS) Structures, Systems and Components (SSC) in the Documented Safety Analysis (DSA) for the project, Documented Safety Analysis for the K-25 and K-27 Facilities at the East Tennessee Technology Park, Oak Ridge, Tennessee, DSA-ET-K-25/K-27-0001.

  7. 16.31 Feedback Control Systems, Fall 2001

    E-Print Network [OSTI]

    How, Jonathan P.

    Introduction to the state-space approach to control system analysis and control synthesis. State-space representation of dynamic systems; controllability and observability; state-space realizations of transfer functions; ...

  8. Virtual control system environment: A modeling and simulation tool for process control systems

    SciTech Connect (OSTI)

    Lee, E.; Michalski, J.; Sholander, P.; Van Leeuwen, B. [Sandia National Laboratories, Albuquerque, NM 87111 (United States)

    2006-07-01

    The development of tools and techniques for security testing and performance testing of Process Control Systems (PCS) is needed since those systems are vulnerable to the same classes of threats as other networked computer systems. In practice, security testing is difficult to perform on operational PCS because it introduces an unacceptable risk of disruption to the critical systems (e.g., power grids) that they control. In addition, the hardware used in PCS is often expensive, making full-scale mockup systems for live experiments impractical. A more flexible approach to these problems can be provided through test beds that provide the proper mix of real, emulated, and virtual elements to model large, complex systems such as critical infrastructures. This paper describes a 'Virtual Control System Environment' that addresses these issues. (authors)

  9. Attacks Against Process Control Systems: Risk Assessment, Detection, and Response

    E-Print Network [OSTI]

    Hu, Fei

    In the last years there has been an increasing interest in the secu- rity of process control and SCADA systems-1-4503-0564-8/11/03 ...$10.00. General Terms Security Keywords SCADA, security, IDS, control systems, critical infrastructure are also called Process Control Systems (PCS), Supervi- sory Control and Data Aquisition (SCADA) systems

  10. MOTION CONTROL FOR UNDERACTUATED MECHANICAL SYSTEMS ON LIE GROUPS

    E-Print Network [OSTI]

    Leonard, Naomi

    MOTION CONTROL FOR UNDERACTUATED MECHANICAL SYSTEMS ON LIE GROUPS Francesco Bullo Control controlla­ bility, underactuated systems Abstract Control design for underactuated mechanical systems is an active area of research. In this paper we focus on mechanical control systems defined on Lie groups

  11. Predictive control of supply temperature in district heating systems

    E-Print Network [OSTI]

    Predictive control of supply temperature in district heating systems Torben Skov Nielsen Henrik This report considers a new concept for controlling the supply temperature in district heating systems using stochastic modelling, prediction and control. A district heating systems is a di#30;cult system to control

  12. Recommended Practice for Patch Management of Control Systems

    SciTech Connect (OSTI)

    Steven Tom; Dale Christiansen; Dan Berrett

    2008-12-01

    A key component in protecting a nation’s critical infrastructure and key resources is the security of control systems. The term industrial control system refers to supervisory control and data acquisition, process control, distributed control, and any other systems that control, monitor, and manage the nation’s critical infrastructure. Critical Infrastructure and Key Resources (CIKR) consists of electric power generators, transmission systems, transportation systems, dam and water systems, communication systems, chemical and petroleum systems, and other critical systems that cannot tolerate sudden interruptions in service. Simply stated, a control system gathers information and then performs a function based on its established parameters and the information it receives. The patch management of industrial control systems software used in CIKR is inconsistent at best and nonexistent at worst. Patches are important to resolve security vulnerabilities and functional issues. This report recommends patch management practices for consideration and deployment by industrial control systems owners.

  13. Electro-osmotically driven liquid delivery method and apparatus

    DOE Patents [OSTI]

    Rakestraw, David J. (Fremont, CA); Anex, Deon S. (Livermore, CA); Yan, Chao (Pleasanton, CA); Dadoo, Rajeev (Stanford, CA); Zare, Richard N. (Stanford, CA)

    1999-01-01

    Method and apparatus for controlling precisely the composition and delivery of liquid at sub-.mu.L/min flow rate. One embodiment of such a delivery system is an electro-osmotically driven gradient flow delivery system that generates dynamic gradient flows with sub-.mu.L/min flow rates by merging a plurality of electro-osmotic flows. These flows are delivered by a plurality of delivery arms attached to a mixing connector, where they mix and then flow into a receiving means, preferably a column. Each inlet of the plurality of delivery arms is placed in a corresponding solution reservoir. A plurality of independent programmable high-voltage power supplies is used to apply a voltage program to each of the plurality of solution reservoirs to regulate the electro-osmotic flow in each delivery arm. The electro-osmotic flow rates in the delivery arms are changed with time according to each voltage program to deliver the required gradient profile to the column.

  14. Electro-osmotically driven liquid delivery method and apparatus

    DOE Patents [OSTI]

    Rakestraw, D.J.; Anex, D.S.; Yan, C.; Dadoo, R.; Zare, R.N.

    1999-08-24

    Method and apparatus are disclosed for controlling precisely the composition and delivery of liquid at sub-{micro}L/min flow rate. One embodiment of such a delivery system is an electro-osmotically driven gradient flow delivery system that generates dynamic gradient flows with sub-{micro}L/min flow rates by merging a plurality of electro-osmotic flows. These flows are delivered by a plurality of delivery arms attached to a mixing connector, where they mix and then flow into a receiving means, preferably a column. Each inlet of the plurality of delivery arms is placed in a corresponding solution reservoir. A plurality of independent programmable high-voltage power supplies is used to apply a voltage program to each of the plurality of solution reservoirs to regulate the electro-osmotic flow in each delivery arm. The electro-osmotic flow rates in the delivery arms are changed with time according to each voltage program to deliver the required gradient profile to the column. 4 figs.

  15. On modeling and controlling intelligent systems

    SciTech Connect (OSTI)

    Dress, W.B.

    1993-11-01

    The aim of this paper is to show how certain diverse and advanced techniques of information processing and system theory might be integrated into a model of an intelligent, complex entity capable of materially enhancing an advanced information management system. To this end, we first examine the notion of intelligence and ask whether a semblance thereof can arise in a system consisting of ensembles of finite-state automata. Our goal is to find a functional model of intelligence in an information-management setting that can be used as a tool. The purpose of this tool is to allow us to create systems of increasing complexity and utility, eventually reaching the goal of an intelligent information management system that provides and anticipates needed data and information. We base our attempt on the ideas of general system theory where the four topics of system identification, modeling, optimization, and control provide the theoretical framework for constructing a complex system that will be capable of interacting with complex systems in the real world. These four key topics are discussed within the purview of cellular automata, neural networks, and evolutionary programming. This is a report of ongoing work, and not yet a success story of a synthetic intelligent system.

  16. Distributed PI-Control with Applications to Power Systems Frequency Control

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Distributed PI-Control with Applications to Power Systems Frequency Control Martin Andreasson12 for networked dynamical systems. Sufficient conditions for when the controller is able to stabilize a general linear system and eliminate static control errors are presented. The proposed controller is applied

  17. Lubricating system for thermal medium delivery parts in a gas turbine

    DOE Patents [OSTI]

    Mashey, Thomas Charles (Coxsackie, NY)

    2002-01-01

    Cooling steam delivery tubes extend axially along the outer rim of a gas turbine rotor for supplying cooling steam to and returning spent cooling steam from the turbine buckets. Because of the high friction forces at the interface of the tubes and supporting elements due to rotor rotation, a low coefficient of friction coating is provided at the interface of the tubes and support elements. On each surface, a first coating of a cobalt-based alloy is sprayed onto the surface at high temperature. A portion of the first coating is machined off to provide a smooth, hard surface. A second ceramic-based solid film lubricant is sprayed onto the first coating. By reducing the resistance to axial displacement of the tubes relative to the supporting elements due to thermal expansion, the service life of the tubes is substantially extended.

  18. INFN ROMA AMS 03/08 Gas Slow Control System

    E-Print Network [OSTI]

    Roma "La Sapienza", Universitŕ di

    INFN ROMA AMS 03/08 1/38 AMS-02 TRD Gas Slow Control System Specifications v 5.2 27-03-2008 A ROMA AMS 03/08 3/38 1. ABSTRACT 5 2. GAS SYSTEM FUNCTIONAL DESCRIPTION 5 3. GAS CONTROL SYSTEM 8 4. CONTROL SYSTEM COMPONENTS 12 a. Universal Control System Module (UGSCM) 12 b. Box-S Control Board (UGBS

  19. Optimal Control of Hybrid Systems in Air Traffic Applications

    E-Print Network [OSTI]

    Kamgarpour, Maryam

    2011-01-01

    optimal control of nonlinear dynamical systems [25, 26, 27].constrained nonlinear switched dynamical systems,” in Hybridwe focus on nonlinear switched dynamical systems. These

  20. Control system for a small fission reactor

    DOE Patents [OSTI]

    Burelbach, J.P.; Kann, W.J.; Saiveau, J.G.

    1985-02-08

    A system for controlling the reactivity of a small fission reactor includes an elongated, flexible hollow tube in the general form of a helical coiled spring axially positioned around and outside of the reactor vessel in an annular space between the reactor vessel and a surrounding cylindrical-shaped neutron reflector. A neutron absorbing material is provided within the hollow tube with the rate of the reaction controlled by the extension and compression of the hollow tube, e.g., extension of the tube increases reactivity while its compression reduces reactivity, in varying the amount of neutron absorbing material disposed between the reactor vessel and the neutron reflector. Conventional mechanical displacement means may be employed to control the coil density of the hollow tube as desired.

  1. Energy Efficiency of Distributed Environmental Control Systems

    SciTech Connect (OSTI)

    Khalifa, H. Ezzat; Isik, Can; Dannenhoffer, John F. III

    2011-02-23

    In this report, we present an analytical evaluation of the potential of occupant-regulated distributed environmental control systems (DECS) to enhance individual occupant thermal comfort in an office building with no increase, and possibly even a decrease in annual energy consumption. To this end we developed and applied several analytical models that allowed us to optimize comfort and energy consumption in partitioned office buildings equipped with either conventional central HVAC systems or occupant-regulated DECS. Our approach involved the following interrelated components: 1. Development of a simplified lumped-parameter thermal circuit model to compute the annual energy consumption. This was necessitated by the need to perform tens of thousands of optimization calculations involving different US climatic regions, and different occupant thermal preferences of a population of ~50 office occupants. Yearly transient simulations using TRNSYS, a time-dependent building energy modeling program, were run to determine the robustness of the simplified approach against time-dependent simulations. The simplified model predicts yearly energy consumption within approximately 0.6% of an equivalent transient simulation. Simulations of building energy usage were run for a wide variety of climatic regions and control scenarios, including traditional “one-size-fits-all” (OSFA) control; providing a uniform temperature to the entire building, and occupant-selected “have-it-your-way” (HIYW) control with a thermostat at each workstation. The thermal model shows that, un-optimized, DECS would lead to an increase in building energy consumption between 3-16% compared to the conventional approach depending on the climate regional and personal preferences of building occupants. Variations in building shape had little impact in the relative energy usage. 2. Development of a gradient-based optimization method to minimize energy consumption of DECS while keeping each occupant’s thermal dissatisfaction below a given threshold. The DECS energy usage was calculated using the simplified thermal model. OSFA control; providing a uniform temperature to the entire building, and occupant-selected HIYW control with a thermostat at each workstation were implemented for 3 cities representing 3 different climatic regions and control scenarios. It is shown that optimization allows DECS to deliver a higher level of individual and population thermal comfort while achieving annual energy savings between 14 and 26% compared to OSFA. The optimization model also allowed us to study the influence of the partitions’ thermal resistance and the variability of internal loads at each office. These influences didn’t make significant changes in the optimized energy consumption relative to OSFA. The results show that it is possible to provide thermal comfort for each occupant while saving energy compared to OSFA Furthermore, to simplify the implementation of this approach, a fuzzy logic system has been developed to generalize the overall optimization strategy. Its performance was almost as good as the gradient system. The fuzzy system provided thermal comfort to each occupant and saved energy compared to OSFA. The energy savings of the fuzzy system were not as high as for the gradient-optimized system, but the fuzzy system avoided complete connectivity, and the optimization did not have to be repeated for each population. 3. We employed a detailed CFD model of adjacent occupied cubicles to extend the thermal-circuit model in three significant ways: (a) relax the “office wall” requirement by allowing energy to flow between zones via advection as well as conduction, (b) improve the comfort model to account both for radiation as well as convection heat transfer, and (c) support ventilation systems in which the temperature is stratified, such as in underfloor air distribution systems. Initially, three-dimensional CFD simulations of several cubicle configurations, with an adjoining corridor, were performed both to understand the advection between cubicles and the

  2. ORC Closed Loop Control Systems for Transient and Steady State...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ORC Closed Loop Control Systems for Transient and Steady State Duty Cycles ORC Closed Loop Control Systems for Transient and Steady State Duty Cycles System-level models using...

  3. APECS - The Atacama Pathfinder Experiment Control System

    E-Print Network [OSTI]

    D. Muders; H. Hafok; F. Wyrowski; E. Polehampton; A. Belloche; C. Koenig; R. Schaaf; F. Schuller; J. Hatchell; F. v. d. Tak

    2006-05-04

    APECS is the distributed control system of the new Atacama Pathfinder EXperiment (APEX) telescope located on the Llano de Chajnantor at an altitude of 5107 m in the Atacama desert in northern Chile. APECS is based on Atacama Large Millimeter Array (ALMA) software and employs a modern, object-oriented design using the Common Object Request Broker Architecture (CORBA) as the middleware. New generic device interfaces simplify adding instruments to the control system. The Python based observer command scripting language allows using many existing software libraries and facilitates creating more complex observing modes. A new self-descriptive raw data format (Multi-Beam FITS or MBFITS) has been defined to store the multi-beam, multi-frequency data. APECS provides an online pipeline for initial calibration, observer feedback and a quick-look display. APECS is being used for regular science observations in local and remote mode since August 2005.

  4. Poincaré-based control of delayed measured systems: Limitations and Improved Control

    E-Print Network [OSTI]

    Jens Christian Claussen

    2007-12-27

    When a chaotic system is to be stabilized to a unstable orbit, delayed measurement of the system limits the applicability of chaos control techniqes. These limitations are analyzed and control schemes as linear predictive logging control (LPLC) and memory difference control (MDC) are introduced which can overcome those limitations for chaos control schemes that act in the Poincar\\'{e} section as Ott-Grebogi-Yorke (OGY) control and Bielawski-Derozier_Glorieux control (difference control).

  5. Optimally Controlled Flexible Fuel Powertrain System

    SciTech Connect (OSTI)

    Hakan Yilmaz; Mark Christie; Anna Stefanopoulou

    2010-12-31

    The primary objective of this project was to develop a true Flex Fuel Vehicle capable of running on any blend of ethanol from 0 to 85% with reduced penalty in usable vehicle range. A research and development program, targeting 10% improvement in fuel economy using a direct injection (DI) turbocharged spark ignition engine was conducted. In this project a gasoline-optimized high-technology engine was considered and the hardware and configuration modifications were defined for the engine, fueling system, and air path. Combined with a novel engine control strategy, control software, and calibration this resulted in a highly efficient and clean FFV concept. It was also intended to develop robust detection schemes of the ethanol content in the fuel integrated with adaptive control algorithms for optimized turbocharged direct injection engine combustion. The approach relies heavily on software-based adaptation and optimization striving for minimal modifications to the gasoline-optimized engine hardware system. Our ultimate objective was to develop a compact control methodology that takes advantage of any ethanol-based fuel mixture and not compromise the engine performance under gasoline operation.

  6. Application accelerator system having bunch control

    DOE Patents [OSTI]

    Wang, Dunxiong (Newport News, VA); Krafft, Geoffrey Arthur (Newport News, VA)

    1999-01-01

    An application accelerator system for monitoring the gain of a free electron laser. Coherent Synchrotron Radiation (CSR) detection techniques are used with a bunch length monitor for ultra short, picosec to several tens of femtosec, electron bunches. The monitor employs an application accelerator, a coherent radiation production device, an optical or beam chopping device, an infrared radiation collection device, a narrow-banding filter, an infrared detection device, and a control.

  7. A Model pH Induced Drug-Delivery System Based on Poly(methacrylic acid) and its Interpolymer complex

    E-Print Network [OSTI]

    Murugan, K Durai; Natarajan, P

    2015-01-01

    The dynamics and structural aspects of polymethacrylic acid bound rhodamine-123 (PMAA-R123) and its interpolymer complex with poly(vinylpyrrolidone) were investigated and the results show that these complexes have potential for use as drug-delivery system under physiological conditions. The time resolved fluorescence anisotropy decay of PMAA-R123 at different pH exhibits an associated anisotropy decay behavior characteristic of two different environments experienced by the fluorophore and decays with one shorter and another longer lifetime components. The anisotropy decay retains normal bi-exponential behavior under neutral pH. Fluorescence correlation spectroscopic investigation reveals that the attached fluorophore undergoes hydrolysis under basic condition which results in the release of the fluorophore from the polymer backbone. Shrinkage in the hydrodynamic radius of PMAA is observed on addition of the complementary polymer PVP which is attributed to the formation compact solubilised nanoparticle like ag...

  8. System and method for controlling remote devices

    DOE Patents [OSTI]

    Carrender, Curtis Lee (Richland, WA); Gilbert, Ronald W. (Benton City, WA); Scott, Jeff W. (Pasco, WA); Clark, David A. (Kennewick, WA)

    2006-02-07

    A system and method for controlling remote devices utilizing a radio frequency identification (RFID) tag device having a control circuit adapted to render the tag device, and associated objects, permanently inoperable in response to radio-frequency control signals. The control circuit is configured to receive the control signals that can include an enable signal, and in response thereto enable an associated object, such as a weapon; and in response to a disable signal, to disable the tag itself, or, if desired, to disable the associated weapon or both the device and the weapon. Permanent disabling of the tag can be accomplished by several methods, including, but not limited to, fusing a fusable link, breaking an electrically conductive path, permanently altering the modulation or backscattering characteristics of the antenna circuit, and permanently erasing an associated memory. In this manner, tags in the possession of unauthorized employees can be remotely disabled, and weapons lost on a battlefield can be easily tracked and enabled or disabled automatically or at will.

  9. Downhole Vibration Monitoring and Control System

    SciTech Connect (OSTI)

    Martin E. Cobern

    2007-09-30

    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. The key feature of this system is its use of a magnetorheological fluid (MRF) to allow the damping coefficient to be changed extensively, rapidly and reversibly without the use of mechanical valves, but only by the application of a current. Phase I of this program, which entailed modeling and design of the necessary subsystems and design, manufacture and test of a full laboratory prototype, was completed on May 31, 2004. Much of the effort was devoted to the design and testing of the MRF damper, itself. The principal objectives of Phase II were: more extensive laboratory testing, including the evaluation of different feedback algorithms for control of the damper; design and manufacture of a field prototype system; and, testing of the field prototype in a drilling laboratory. Phase II concluded on January 31, 2006, and a final report was issued. Work on Phase III of the project began during the first quarter, 2006, with the objectives of building precommercial prototypes, testing them in a drilling laboratory and the field; developing and implementing a commercialization plan. All of these have been accomplished. The Downhole Vibration Monitoring & Control System (DVMCS) prototypes have been successfully proven in testing at the TerraTek drilling facility and at the Rocky Mountain Oilfield Test Center (RMOTC.) Based on the results of these tests, we have signed a definitive development and distribution agreement with Smith, and commercial deployment is underway. This current version of the DVMCS monitors and controls axial vibrations. Due to time and budget constraints of this program, it was not possible to complete a system that would also deal with lateral and torsional (stick-slip) vibrations as originally planned; however, this effort is continuing without DOE funding.

  10. Thermodynamics of quantum systems under dynamical control

    E-Print Network [OSTI]

    D. Gelbwaser-Klimovsky; Wolfgang Niedenzu; Gershon Kurizki

    2015-03-04

    In this review the debated rapport between thermodynamics and quantum mechanics is addressed in the framework of the theory of periodically-driven/controlled quantum-thermodynamic machines. The basic model studied here is that of a two-level system (TLS), whose energy is periodically modulated while the system is coupled to thermal baths. When the modulation interval is short compared to the bath memory time, the system-bath correlations are affected, thereby causing cooling or heating of the TLS, depending on the interval. In steady state, a periodically-modulated TLS coupled to two distinct baths constitutes the simplest quantum heat machine (QHM) that may operate as either an engine or a refrigerator, depending on the modulation rate. We find their efficiency and power-output bounds and the conditions for attaining these bounds. An extension of this model to multilevel systems shows that the QHM power output can be boosted by the multilevel degeneracy. These results are used to scrutinize basic thermodynamic principles: (i) Externally-driven/modulated QHMs may attain the Carnot efficiency bound, but when the driving is done by a quantum device ("piston"), the efficiency strongly depends on its initial quantum state. Such dependence has been unknown thus far. (ii) The refrigeration rate effected by QHMs does not vanish as the temperature approaches absolute zero for certain quantized baths, e.g., magnons, thous challenging Nernst's unattainability principle. (iii) System-bath correlations allow more work extraction under periodic control than that expected from the Szilard-Landauer principle, provided the period is in the non-Markovian domain. Thus, dynamically-controlled QHMs may benefit from hitherto unexploited thermodynamic resources.

  11. Linearisation of tautological control systems Andrew D. Lewis

    E-Print Network [OSTI]

    Lewis, Andrew D.

    Linearisation of tautological control systems Andrew D. Lewis 20/04/2015 Abstract The framework of tautological control systems is one where "control" in the usual sense has been eliminated, with the intention of overcoming the issue of feedback- invariance. Here, the linearisation of tautological control systems

  12. 1. INTRODUCTION It is relatively easy to control linear systems.

    E-Print Network [OSTI]

    Wilamowski, Bogdan Maciej

    1. INTRODUCTION It is relatively easy to control linear systems. Unfortunately, in practice most systems are nonlinear. Some of them can be linearized and use well developed linear control theory, but in many cases a special nonlinear control system has to be developed. Nonlinear control is one

  13. Actor-Oriented Control System Design Palo Alto Research Center

    E-Print Network [OSTI]

    California at Berkeley, University of

    1 of 29 Actor-Oriented Control System Design Jie Liu Palo Alto Research Center 3333 Coyote Hill Rd}@eecs.berkeley.edu Abstract: Complex control systems are heterogeneous, in the sense of discrete computer-based con- trollers challenges for control system design technologies in terms of end-to-end control perfor- mance modeling

  14. Phase control of intermittency in dynamical systems Samuel Zambrano,1

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Phase control of intermittency in dynamical systems Samuel Zambrano,1 Inés P. Marińo,1 Francesco has been proved in periodically driven chaotic systems is phase control of chaos 10 that the intermittency at an interior crisis in a dynamical system can be controlled by a phase control scheme. We give

  15. Nonlinear effect on quantum control for two-level systems

    E-Print Network [OSTI]

    W. Wang; J. Shen; X. X. Yi

    2009-06-05

    The traditional quantum control theory focuses on linear quantum system. Here we show the effect of nonlinearity on quantum control of a two-level system, we find that the nonlinearity can change the controllability of quantum system. Furthermore, we demonstrate that the Lyapunov control can be used to overcome this uncontrollability induced by the nonlinear effect.

  16. Development of a CAN Based Electric Vehicle Control System

    E-Print Network [OSTI]

    Vincent, Stephen Andrew

    2014-08-31

    the bus featured an unreliable control system to manage load control and drive enable functions. As a result this thesis presents the design of a Controller Area Network (CAN) based control system to be used as a replacement for the existing system...

  17. Control of an Active Magnetic Bearing-Rotor System

    E-Print Network [OSTI]

    Kang, Christopher

    2014-01-01

    To my colleagues in the Mechatronics and Controls Laboratoryphase Systems. ” Mechatronics, 22(5):577–587, August 2012. [in Digital Control. ” Mechatronics, IEEE/ASME Transactions

  18. Modeling and Control of an Active Magnetic Bearing Spindle System

    E-Print Network [OSTI]

    Cavalier, Grant

    2015-01-01

    Active Magnetic Bearing SpindleKang. “Control of an Active Magnetic Bearing-Rotor System. ”T.C. Tsao. “Control of Magnetic Bearings with Plug-in Time-

  19. Control system and method for a universal power conditioning system

    DOE Patents [OSTI]

    Lai, Jih-Sheng; Park, Sung Yeul; Chen, Chien-Liang

    2014-09-02

    A new current loop control system method is proposed for a single-phase grid-tie power conditioning system that can be used under a standalone or a grid-tie mode. This type of inverter utilizes an inductor-capacitor-inductor (LCL) filter as the interface in between inverter and the utility grid. The first set of inductor-capacitor (LC) can be used in the standalone mode, and the complete LCL can be used for the grid-tie mode. A new admittance compensation technique is proposed for the controller design to avoid low stability margin while maintaining sufficient gain at the fundamental frequency. The proposed current loop controller system and admittance compensation technique have been simulated and tested. Simulation results indicate that without the admittance path compensation, the current loop controller output duty cycle is largely offset by an undesired admittance path. At the initial simulation cycle, the power flow may be erratically fed back to the inverter causing catastrophic failure. With admittance path compensation, the output power shows a steady-state offset that matches the design value. Experimental results show that the inverter is capable of both a standalone and a grid-tie connection mode using the LCL filter configuration.

  20. Tandem robot control system and method for controlling mobile robots in tandem

    DOE Patents [OSTI]

    Hayward, David R. (Albuquerque, NM); Buttz, James H. (Albuquerque, NM); Shirey, David L. (Albuquerque, NM)

    2002-01-01

    A control system for controlling mobile robots provides a way to control mobile robots, connected in tandem with coupling devices, to navigate across difficult terrain or in closed spaces. The mobile robots can be controlled cooperatively as a coupled system in linked mode or controlled individually as separate robots.

  1. Controller Failure Time Analysis for Symmetric H Control Systems Guisheng ZHAI

    E-Print Network [OSTI]

    Antsaklis, Panos

    Controller Failure Time Analysis for Symmetric H Control Systems Guisheng ZHAI Department of Opto a controller failure time analysis problem for a class of symmetric linear time-invariant (LTI) systems properties for the entire system. Our objective is to find conditions concerning controller failure time

  2. X-Band Crab Cavities for the CLIC Beam Delivery System

    SciTech Connect (OSTI)

    Burt, G.; Ambattu, P.K.; Dexter, A.C.; Abram, T.; Dolgashev, V.; Tantawi, S.; Jones, R.M.; /Cockcroft Inst. Accel. Sci. Tech. /Manchester U.

    2011-11-22

    The CLIC machine incorporates a 20 mrad crossing angle at the IP to aid the extraction of spent beams. In order to recover the luminosity lost through the crossing angle a crab cavity is proposed to rotate the bunches prior to collision. The crab cavity is chosen to have the same frequency as the main linac (11.9942 GHz) as a compromise between size, phase stability requirements and beam loading. It is proposed to use a HE11 mode travelling wave structure as the CLIC crab cavity in order to minimise beam loading and mode separation. The position of the crab cavity close to the final focus enhances the effect of transverse wake-fields so effective wake-field damping is required. A damped detuned structure is proposed to suppress and de-cohere the wake-field hence reducing their effect. Design considerations for the CLIC crab cavity will be discussed as well as the proposed high power testing of these structures at SLAC. Design of a crab cavity for CLIC is underway at the Cockcroft Institute in collaboration with SLAC. This effort draws on a large degree of synergy with the ILC crab cavity developed at the Cockcroft Institute and other deflecting structure development at SLAC. A study of phase and amplitude variations in the cavity suggests that the tolerances are very tight and require a 'beyond state of the art' LLRF control system. A study of cavity geometry and its effect on the cavity fields has been performed using Microwave studio. This study has suggested that for our cavity an iris radius between 4-5 mm is optimum with an iris thickness of 2-3 mm based on group velocity and peak fields. A study of the cavity wakefields show that the single bunch wakes are unlikely to be a problem but the short bunch spacing may cause the multi-bunch wakefields to be an issue. This will require some of the modes to be damped strongly so that the wake is damped significantly before any following bunch arrives. Various methods of damping have been investigated and suggest that waveguide damping in the cells should provide sufficient damping in the vertical plane, which is the most sensitive.

  3. Fault Tolerant Oxygen Control of a Diesel Engine Air System

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fault Tolerant Oxygen Control of a Diesel Engine Air System Rainer Nitsche Matthias Bitzer control problem of a Diesel engine air system having a jammed Exhaust Gas Recirculation (EGR) valve of the air system. Keywords: Fault tolerant control, Diesel engine, Air system, Model-based trajectory

  4. CONTROL SYSTEM OF VEPP-2000 COLLIDER (SOFTWARE, HARDWARE)

    E-Print Network [OSTI]

    Kozak, Victor R.

    CONTROL SYSTEM OF VEPP-2000 COLLIDER (SOFTWARE, HARDWARE) D.E.Berkaev, P.B.Cheblakov, V, implementation and functionality of the software of the collider control system. The software according. Control system software is based on several TCP/IP connected PC platforms working under operating system

  5. A Modular Control System for Remote Subsea Eric Stephen Smith

    E-Print Network [OSTI]

    Wood, Stephen L.

    A Modular Control System for Remote Subsea Equipment by Eric Stephen Smith Bachelor of Science the undersigned committee hereby approve the attached thesis A Modular Control System for Remote Subsea Equipment and Environmental Systems #12;iv Abstract Title: A Modular Control System for Remote Subsea Equipment Author: Eric

  6. BULK POWER SYSTEM DYNAMICS AND CONTROL V, AUGUST 26-31, 2001, ONOMICHI, JAPAN Global Hybrid Control of Power Systems

    E-Print Network [OSTI]

    Guo, Yi

    BULK POWER SYSTEM DYNAMICS AND CONTROL V, AUGUST 26-31, 2001, ONOMICHI, JAPAN Global Hybrid Control| This paper presents an overview of recent results on an ap- proach to total control of power systems con- trol for voltage security of power systems, and same ideas for general control [1{6]. In arriving

  7. Safe and compact ammonia storage/delivery systems for SCR-DeNOX...

    Energy Savers [EERE]

    Safe and compact ammonia storagedelivery systems for SCR-DeNOX in automotive units Safe and compact ammonia storagedelivery systems for SCR-DeNOX in automotive units Presentation...

  8. Systems and Controls Analysis and Testing; Harvesting More Wind Energy with Advanced Controls Technology (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-01-01

    This fact sheet outlines the systems and controls analysis and testing that takes place at the NWTC on the Controls Advanced Research Turbines.

  9. Switched Control of Electron Nuclear Spin Systems

    E-Print Network [OSTI]

    Navin Khaneja

    2007-07-11

    In this article, we study control of electron-nuclear spin dynamics at magnetic field strengths where the Larmor frequency of the nucleus is comparable to the hyperfine coupling strength. The quantization axis for the nuclear spin differs from the static B_0 field direction and depends on the state of the electron spin. The quantization axis can be switched by flipping the state of electron spin, allowing for universal control on nuclear spin states. We show that by performing a sequence of flips (each followed by a suitable delay), we can perform any desired rotation on the nuclear spins, which can also be conditioned on the state of the electron spin. These operations, combined with electron spin rotations can be used to synthesize any unitary transformation on the coupled electron-nuclear spin system. We discuss how these methods can be used for design of experiments for transfer of polarization from the electron to the nuclear spins.

  10. Remotely controlled sensor apparatus for use in dig-face characterization system

    DOE Patents [OSTI]

    Josten, N.E.; Svoboda, J.M.

    1999-05-25

    A remotely controlled sensor platform apparatus useful in a dig-face characterization system is deployed from a mobile delivery device such as standard heavy construction equipment. The sensor apparatus is designed to stabilize sensors against extraneous motions induced by heavy equipment manipulations or other outside influences, and includes a terrain sensing and sensor elevation control system to maintain the sensors in close ground proximity. The deployed sensor apparatus is particularly useful in collecting data in work environments where human access is difficult due to the presence of hazardous conditions, rough terrain, or other circumstances that prevent efficient data collection by conventional methods. Such work environments include hazardous waste sites, unexploded ordnance sites, or construction sites. Data collection in these environments by utilizing the deployed sensor apparatus is desirable in order to protect human health and safety, or to assist in planning daily operations to increase efficiency. 13 figs.

  11. Remotely controlled sensor apparatus for use in dig-face characterization system

    DOE Patents [OSTI]

    Josten, Nicholas E. (Idaho Falls, ID); Svoboda, John M. (Idaho Falls, ID)

    1999-01-01

    A remotely controlled sensor platform apparatus useful in a dig-face characterization system is deployed from a mobile delivery device such as standard heavy construction equipment. The sensor apparatus is designed to stabilize sensors against extraneous motions induced by heavy equipment manipulations or other outside influences, and includes a terrain sensing and sensor elevation control system to maintain the sensors in close ground proximity. The deployed sensor apparatus is particularly useful in collecting data in work environments where human access is difficult due to the presence of hazardous conditions, rough terrain, or other circumstances that prevent efficient data collection by conventional methods. Such work environments include hazardous waste sites, unexploded ordnance sites, or construction sites. Data collection in these environments by utilizing the deployed sensor apparatus is desirable in order to protect human health and safety, or to assist in planning daily operations to increase efficiency.

  12. Control Engineering Practice 14 (2006) 319326 Life extending control of boilerturbine systems via model

    E-Print Network [OSTI]

    Marquez, Horacio J.

    2006-01-01

    Control Engineering Practice 14 (2006) 319­326 Life extending control of boiler­turbine systems via Available online 24 October 2005 Abstract Boiler­turbine units constitute a critical component of a co between the life of a boiler­turbine system and control system performance. Because the boiler system

  13. Variable pressure power cycle and control system

    DOE Patents [OSTI]

    Goldsberry, Fred L. (Spring, TX)

    1984-11-27

    A variable pressure power cycle and control system that is adjustable to a variable heat source is disclosed. The power cycle adjusts itself to the heat source so that a minimal temperature difference is maintained between the heat source fluid and the power cycle working fluid, thereby substantially matching the thermodynamic envelope of the power cycle to the thermodynamic envelope of the heat source. Adjustments are made by sensing the inlet temperature of the heat source fluid and then setting a superheated vapor temperature and pressure to achieve a minimum temperature difference between the heat source fluid and the working fluid.

  14. Fuel cell stack monitoring and system control

    DOE Patents [OSTI]

    Keskula, Donald H.; Doan, Tien M.; Clingerman, Bruce J.

    2004-02-17

    A control method for monitoring a fuel cell stack in a fuel cell system in which the actual voltage and actual current from the fuel cell stack are monitored. A preestablished relationship between voltage and current over the operating range of the fuel cell is established. A variance value between the actual measured voltage and the expected voltage magnitude for a given actual measured current is calculated and compared with a predetermined allowable variance. An output is generated if the calculated variance value exceeds the predetermined variance. The predetermined voltage-current for the fuel cell is symbolized as a polarization curve at given operating conditions of the fuel cell.

  15. Passive injection control for microfluidic systems

    DOE Patents [OSTI]

    Paul, Phillip H.; Arnold, Don W.; Neyer, David W.

    2004-12-21

    Apparatus for eliminating siphoning, "dead" regions, and fluid concentration gradients in microscale analytical devices. In its most basic embodiment, the present invention affords passive injection control for both electric field-driven and pressure-driven systems by providing additional fluid flow channels or auxiliary channels disposed on either side of a sample separation column. The auxiliary channels are sized such that volumetric fluid flow rate through these channels, while sufficient to move the sample away from the sample injection region in a timely fashion, is less than that through the sample separation channel or chromatograph.

  16. Ambient Control Systems | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'S FUTURE.EnergyWoodenDateSA JumpSolar PV JumpControl Systems Jump

  17. A survey of commercially available manipulators, end-effectors, and delivery systems for reactor decommissioning activities

    SciTech Connect (OSTI)

    Henley, D.R.; Litka, T.J.

    1996-05-01

    Numerous nuclear facilities owned by the U.S. Department of Energy (DOE) are under consideration for decommissioning. Currently, there are no standardized, automated, remote systems designed to dismantle and thereby reduce the size of activated reactor components and vessels so that they can be packaged and shipped to disposal sites. Existing dismantling systems usually consist of customized, facility-specific tooling that has been developed to dismantle a specific reactor system. Such systems have a number of drawbacks. Generally, current systems cannot be disassembled, moved, and reused. Developing and deploying the tooling for current systems is expensive and time-consuming. In addition, the amount of manual work is significant because long-handled tools must be used; as a result, personnel are exposed to excessive radiation. A standardized, automated, remote system is therefore needed to deliver the tooling necessary to dismantle nuclear facilities at different locations. Because this system would be reusable, it would produce less waste. The system would also save money because of its universal design, and it would be more reliable than current systems.

  18. Optimization of Signal Processing Software for Control System Implementation

    E-Print Network [OSTI]

    Bhattacharyya, Shuvra S.

    Optimization of Signal Processing Software for Control System Implementation Shuvra S for design and optimization of signal processing software are important in achieving efficient controller that techniques developed for optimizing DSP software apply equally well to controller software. However

  19. Indirect quantum control for finite-dimensional coupled systems

    E-Print Network [OSTI]

    J. Nie; H. C. Fu; X. X. Yi

    2009-07-12

    We present a new analysis on the quantum control for a quantum system coupled to a quantum probe. This analysis is based on the coherent control for the quantum system and a hyperthesis that the probe can be prepared in specified initial states. The results show that a quantum system can be manipulated by probe state-dependent coherent control. In this sense, the present analysis provides a new control scheme which combines the coherent control and state preparation technology.

  20. Improved Combustion Efficiencies - Control Systems for Process Heaters and Boilers 

    E-Print Network [OSTI]

    Varma, A. C.; Prengle, H. W.

    1979-01-01

    % O 2 ) by using high efficiency low excess air burners. 3. Installing modern combustion control systems for automatic control of proper air/fuel ratio to optimize heater combustion. 4. Reducing radiation losses from the furnace to about 1... fuels. CONVENTIONAL HEATER CONTROLS A conventional control system is defined as the minimum control instrumentation necessary, as illustra ted by Figure 3. The feed outlet temperature controller provides the set point for the burner fuel pressure...

  1. Systemic Sublingual Delivery of Octreotide Acetate Utilizing Low-Current Oral Electrical Stimulation in Rabbits 

    E-Print Network [OSTI]

    Bolch, Christina M.

    2012-10-19

    A), and AC (2 mA peak-to-peak, 20 Hz square wave). These were compared to an Oral Baseline Absorption Group (sublingual diffusion in the absence of stimulation) to determine statistical significance of electrical stimulus; and a Subcutaneous Control Group...

  2. First operational experience with the CMS Run Control System

    E-Print Network [OSTI]

    Bauer, Gerry P.

    The Run Control System of the Compact Muon Solenoid (CMS) experiment at CERN's new Large Hadron Collider (LHC) controls the sub-detector and central data acquisition systems and the high-level trigger farm of the experiment. ...

  3. Roadmap to Secure Control Systems in the Energy Sector 2006 ...

    Energy Savers [EERE]

    Roadmap to Secure Control Systems in the Energy Sector 2006 - Presentation to the 2008 ieRoadmap Workshop Roadmap to Secure Control Systems in the Energy Sector 2006 - Presentation...

  4. Applied high resolution digital control for universal precision systems

    E-Print Network [OSTI]

    Gawlik, Aaron John

    2008-01-01

    This thesis describes the design and characterization of a high-resolution analog interface for dSPACE digital control systems and a high-resolution, high-speed data acquisition and control system. These designs are intended ...

  5. The system for delivery of IR laser radiaton into high vacuum

    E-Print Network [OSTI]

    Abakumova, E V; Krasnov, A A; Muchnoi, N Yu; Pyata, E E

    2015-01-01

    The system for insertion of a laser beam into the vacuum chamber of high-energy storage ring is described. The main part of the system is the high-vacuum viewport for the IR radiation, based on ZnSe or GaAs crystals. The design of the viewports is presented.

  6. Digitally Fabricated Building Delivery

    E-Print Network [OSTI]

    Lab ­ Building Kit S 20 2Summer 2012 Integrated Systems ­ Programming Surfaces a) Exterior -Water production with integrated digital fabrication." Automation in Construction, Vol. 16, No. 3, 298­310, 2007Digitally Fabricated Building Delivery through Kitsthrough Kits Lawrence Sass Associate Professor

  7. Research and Development Needs for Wind Systems Utilizing Controllable...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Research and Development Needs for Wind Systems Utilizing Controllable Grid Simulators and Full Scale Hardware in the Loop Testing Research and Development Needs for Wind Systems...

  8. National SCADA Test Bed - Enhancing control systems security...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of the systems still in use today were designed to operate in closed, proprietary networks. National SCADA Test Bed - Enhancing control systems security in the energy sector...

  9. Security Framework for Control System Data Classification and...

    Broader source: Energy.gov (indexed) [DOE]

    Security (OPSEC) to Support a Cyber Security Culture in Control Systems Environments Wireless System Considerations When Implementing NERC Critical Infrastructure Protection...

  10. Voltage control in pulsed system by predict-ahead control

    DOE Patents [OSTI]

    Payne, A.N.; Watson, J.A.; Sampayan, S.E.

    1994-09-13

    A method and apparatus for predict-ahead pulse-to-pulse voltage control in a pulsed power supply system is disclosed. A DC power supply network is coupled to a resonant charging network via a first switch. The resonant charging network is coupled at a node to a storage capacitor. An output load is coupled to the storage capacitor via a second switch. A de-Q-ing network is coupled to the resonant charging network via a third switch. The trigger for the third switch is a derived function of the initial voltage of the power supply network, the initial voltage of the storage capacitor, and the present voltage of the storage capacitor. A first trigger closes the first switch and charges the capacitor. The third trigger is asserted according to the derived function to close the third switch. When the third switch is closed, the first switch opens and voltage on the node is regulated. The second trigger may be thereafter asserted to discharge the capacitor into the output load. 4 figs.

  11. Partial control of complex processing systems. Final Report

    SciTech Connect (OSTI)

    Shinnar, Reuel; Rinard, Irv

    2003-04-17

    Research program for the design and control of advanced chemical process systems, typified by refineries/petro chemical plants.

  12. AMMONIA-FREE NOx CONTROL SYSTEM

    SciTech Connect (OSTI)

    Song Wu; Zhen Fan; Andrew H. Seltzer; Richard G. Herman

    2006-06-01

    This report describes a novel NOx control system that has the potential to drastically reduce cost, and enhance performance, operation and safety of power plant NOx control. The new system optimizes the burner and the furnace to achieve very low NOx levels and to provide an adequate amount of CO, and uses the CO for reducing NO both in-furnace and over a downstream AFSCR (ammonia-free selective catalytic reduction) reactor. The AF-SCR combines the advantages of the highly successful SCR technology for power plants and the TWC (three-way catalytic converter) widely used on automobiles. Like the SCR, it works in oxidizing environment of combustion flue gas and uses only base metal catalysts. Like the TWC, the AF-SCR removes NO and excess CO simultaneously without using any external reagent, such as ammonia. This new process has been studied in a development program jointed funded by the US Department of Energy and Foster Wheeler. The report outlines the experimental catalyst work performed on a bench-scale reactor, including test procedure, operating conditions, and results of various catalyst formulations. Several candidate catalysts, prepared with readily available transition metal oxides and common substrate materials, have shown over 80-90% removal for both NO and CO in oxidizing gas mixtures and at elevated temperatures. A detailed combustion study of a 400 MWe coal-fired boiler, applying computational fluid dynamics techniques to model boiler and burner design, has been carried out to investigate ways to optimize the combustion process for the lowest NOx formation and optimum CO/NO ratios. Results of this boiler and burner optimization work are reported. The paper further discusses catalyst scale-up considerations and the conceptual design of a 400 MWe size AF-SCR reactor, as well as economics analysis indicating large cost savings of the ammonia-free NOx control process over the current SCR technology.

  13. Stabilization of finite-dimensional control systems: a survey

    E-Print Network [OSTI]

    Rifford, Ludovic

    Stabilization of finite-dimensional control systems: a survey Ludovic Rifford Universit´e de Nice - Sophia Antipolis Ludovic Rifford Stabilization of finite-dimensional control systems #12;Purpose of the talk Given a control system x = f (x, u) with an equilibrium point f (O, 0) = 0 which is globally

  14. Formal Development and Verification of a Distributed Railway Control System

    E-Print Network [OSTI]

    Peleska, Jan - Fachbereich 3

    Formal Development and Verification of a Distributed Railway Control System Anne E. Haxthausen 1@informatik.uni­bremen.de Abstract. In this article we introduce the concept for a distributed rail­ way control system and present the sys­ tem model into a domain model describing the physical system in absence of control

  15. Distributed Control of Networked Dynamical Systems: Static Feedback,

    E-Print Network [OSTI]

    Dimarogonas, Dimos

    1 Distributed Control of Networked Dynamical Systems: Static Feedback, Integral Action--This paper analyzes distributed control protocols for first- and second-order networked dynamical systems. We systems. The PI controllers successfully attenuate constant disturbances in the network. We prove

  16. Levitation Control System in the Levitated Dipole Experiment

    E-Print Network [OSTI]

    Levitation Control System in the Levitated Dipole Experiment (LDX) #12;Abstract The design, installation, and calibration of the levitation control system in LDX is presented. A number of laser beams desired position and orientation. These measurements are input to a real-time digital control system

  17. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group;1 Optimal Control of Switched Hybrid Systems: A Brief Survey Feng Zhu and Panos J. Antsaklis Department a few. The problem of determining optimal control laws for hybrid systems and in particular for switched

  18. A REMARK ON ROBUST STABILIZATION OF GENERAL ASYMPTOTICALLY CONTROLLABLE SYSTEMS

    E-Print Network [OSTI]

    Sontag, Eduardo

    A REMARK ON ROBUST STABILIZATION OF GENERAL ASYMPTOTICALLY CONTROLLABLE SYSTEMS Yu. S recently by Clarke, Ledyaev, Sontag and Subbotin that any asymptotically controllable system can to measurement error. This new design relies upon a controller which incorporates an internal model of the system

  19. AN INTRODUCTION TO HYBRID SYSTEM MODELING, ANALYSIS, AND CONTROL

    E-Print Network [OSTI]

    Pappas, George J.

    AN INTRODUCTION TO HYBRID SYSTEM MODELING, ANALYSIS, AND CONTROL JOHN LYGEROS, GEORGE PAPPAS as models of large scale systems. We provide an overview of modeling, analysis, and controller synthesis automatically. Finally, we review a method for designing controllers for hybrid systems with reachability

  20. Opportunistic sensing and mobile data delivery in the CarTel System

    E-Print Network [OSTI]

    Hull, Bret Warren, 1980-

    2010-01-01

    Wide-area sensor systems enable a broad class of applications, including the fine-grained monitoring of traffic congestion, road surface conditions, and pollution. This dissertation shows that it is possible to build a ...

  1. Adaptive control of time delay systems and applications to automotive control problems

    E-Print Network [OSTI]

    Yildiz, Yildiray

    2009-01-01

    This thesis is about the adaptive control of time delay systems with applications to automotive control problems. The stabilization of systems involving time delays is a difficult problem since the existence of a delay may ...

  2. Electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, S.R.

    1995-09-12

    An antiskid braking and traction control system for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes one or more sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensors and determining if regenerative antiskid braking control, requiring hydraulic braking control, or requiring traction control are required. The processor then employs a control strategy based on the determined vehicle state and provides command signals to a motor controller to control the operation of the electric traction motor and to a brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative antiskid braking control, hydraulic braking control, and traction control. 10 figs.

  3. Electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, Susan R. (Wixom, MI)

    1995-01-01

    An antiskid braking and traction control system for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes one or more sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensors and determining if regenerative antiskid braking control, requiring hydrualic braking control, or requiring traction control are required. The processor then employs a control strategy based on the determined vehicle state and provides command signals to a motor controller to control the operation of the electric traction motor and to a brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative antiskid braking control, hydraulic braking control, and traction control.

  4. Port-Hamiltonian systems: network modeling and control of nonlinear physical systems

    E-Print Network [OSTI]

    Schaft, Arjan van der

    Port-Hamiltonian systems: network modeling and control of nonlinear physical systems A.J. van der-Hamiltonian system with a controller port-Hamiltonian system, leading to a closed-loop port-Hamiltonian system. Finally, extensions to the distributed-parameter case are provided by formulating boundary control systems

  5. Federspiel Controls’ Data Center Energy Efficient Cooling Control System

    SciTech Connect (OSTI)

    2011-05-31

    Fact sheet about combining artificial intelligence with variable flow control, direct temperature measurement, and best practices that can reduce cooling energy use by up to 50%.

  6. Expert system to control a fusion energy experiment

    SciTech Connect (OSTI)

    Johnson, R.R.; Canales, T.; Lager, D.

    1986-01-01

    This paper describes a system that automates neutral beam source conditioning. The system achieves this with artificial intelligence techniques by encoding the behavior of several experts as a set of if-then rules in an expert system. One of the functions of the expert system is to control an adaptive controller that, in turn, controls the neutral beam source. The architecture of the system is presented followed by a description of its performance.

  7. Pollution Control in a Manufacturing System Stochastic Models for Analysis and Control of Air Pollution

    E-Print Network [OSTI]

    Gosavi, Abhijit

    Pollution Control in a Manufacturing System Stochastic Models for Analysis and Control of Air Pollution in a Manufacturing System Jan, 1, 2005 Technical Report SOPTL-05-01 Missouri University of Science models that can be used for controlling pollution in a manufacturing system. The models are developed

  8. Aalborg Universitet Distributed Secondary Control for Islanded MicroGrids A Networked Control Systems

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Distributed Secondary Control for Islanded MicroGrids ­ A Networked Control, Q., Vasquez, J. C., & Guerrero, J. M. (2012). Distributed Secondary Control for Islanded MicroGrids M.; , "Distributed secondary control for islanded MicroGrids - A networked control systems approach

  9. Automated Control Synthesis for an Assembly Line using Discrete Event System Control Theory

    E-Print Network [OSTI]

    Kumar, Ratnesh

    1 Automated Control Synthesis for an Assembly Line using Discrete Event System Control Theory even fail at times. Super- visory control theory (SCT) provides a formal approach to logic control synthesis. In order to demonstrate the useful- ness of the supervisory control theory in manufacturing sys

  10. Primer Control System Cyber Security Framework and Technical Metrics

    SciTech Connect (OSTI)

    Wayne F. Boyer; Miles A. McQueen

    2008-05-01

    The Department of Homeland Security National Cyber Security Division supported development of a control system cyber security framework and a set of technical metrics to aid owner-operators in tracking control systems security. The framework defines seven relevant cyber security dimensions and provides the foundation for thinking about control system security. Based on the developed security framework, a set of ten technical metrics are recommended that allow control systems owner-operators to track improvements or degradations in their individual control systems security posture.

  11. Emergency delivery of Vasopressin from an implantable MEMS rapid drug delivery device

    E-Print Network [OSTI]

    Ho Duc, Hong Linh, 1978-

    2009-01-01

    An implantable rapid drug delivery device based on micro-electro-mechanical systems (MEMS) technology was designed, fabricated and validated for the in vivo rapid delivery of vasopressin in a rabbit model. In vitro ...

  12. Active control system for high speed windmills

    DOE Patents [OSTI]

    Avery, D.E.

    1988-01-12

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed. 4 figs.

  13. Active control system for high speed windmills

    DOE Patents [OSTI]

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

    1988-01-01

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed.

  14. Fuel cell stack monitoring and system control

    DOE Patents [OSTI]

    Keskula, Donald H.; Doan, Tien M.; Clingerman, Bruce J.

    2005-01-25

    A control method for monitoring a fuel cell stack in a fuel cell system in which the actual voltage and actual current from the fuel cell stack are monitored. A preestablished relationship between voltage and current over the operating range of the fuel cell is established. A variance value between the actual measured voltage and the expected voltage magnitude for a given actual measured current is calculated and compared with a predetermined allowable variance. An output is generated if the calculated variance value exceeds the predetermined variance. The predetermined voltage-current for the fuel cell is symbolized as a polarization curve at given operating conditions of the fuel cell. Other polarization curves may be generated and used for fuel cell stack monitoring based on different operating pressures, temperatures, hydrogen quantities.

  15. Process control system using polarizing interferometer

    DOE Patents [OSTI]

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

    1994-01-01

    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.

  16. Process control system using polarizing interferometer

    DOE Patents [OSTI]

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

    1994-02-15

    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.

  17. LOx breathing system with gas permeable-liquid impermeable heat exchange and delivery hose

    DOE Patents [OSTI]

    Hall, M.N.

    1996-04-30

    Life support apparatus is composed of: a garment for completely enclosing a wearer and constructed for preventing passage of gas from the environment surrounding the garment; a portable receptacle holding a quantity of an oxygen-containing fluid in liquid state, the fluid being in a breathable gaseous state when at standard temperature and pressure; a fluid flow member secured within the garment and coupled to the receptacle for conducting the fluid in liquid state from the receptacle to the interior of the garment; and a fluid flow control device connected for causing fluid to flow from the receptacle to the fluid flow member at a rate determined by the breathable air requirement of the wearer, wherein fluid in liquid state is conducted into the interior of the garment at a rate to be vaporized and heated to a breathable temperature by body heat produced by the wearer. 6 figs.

  18. Lox breathing system with gas permeable-liquid impermeable heat exchange and delivery hose

    DOE Patents [OSTI]

    Hall, Mark N. (Richland, WA)

    1996-01-01

    Life support apparatus composed of: a garment (2): for completely enclosing a wearer and constructed for preventing passage of gas from the environment surrounding the garment (2); a portable receptacle (6) holding a quantity of an oxygen-containing fluid in liquid state, the fluid being in a breathable gaseous; state when at standard temperature and pressure; a fluid flow member (16) secured within the garment (2) and coupled to the receptacle (6) for conducting the fluid in liquid state from the receptacle (6) to the interior of the garment (2); and a fluid flow control device (14) connected for causing fluid to flow from the receptacle (6) to the fluid flow member (16) at a rate determined by the breathable air requirement of the wearer, wherein fluid in liquid state is conducted into the interior of the garment (2) at a rate to be vaporized and heated to a breathable temperature by body heat produced by the wearer.

  19. Nonviral Vectors for Gene Delivery

    E-Print Network [OSTI]

    Baoum, Abdulgader Ahmed

    2011-04-26

    , two nonviral gene delivery systems using either biodegradable poly(D,L-lactide-co-glycolide) (PLG) nanoparticles or cell penetrating peptide (CPP) complexes have been designed and studied using A549 human lung epithelial cells. PLG nanoparticles were...

  20. Solar concentrator with integrated tracking and light delivery system with summation

    DOE Patents [OSTI]

    Maxey, Lonnie Curt

    2015-05-05

    A solar light distribution system includes a solar light concentrator that is affixed externally to a light transfer tube. Solar light waves are processed by the concentrator into a collimated beam of light, which is then transferred through a light receiving port and into the light transfer tube. A reflector redirects the collimated beam of light through the tube to a light distribution port. The interior surface of the light transfer tube is highly reflective so that the light transfers through the tube with minimal losses. An interchangeable luminaire is attached to the light distribution port and provides light inside of a structure. A sun tracking device rotates the concentrator and the light transfer tube to optimize the receiving of solar light by the concentrator throughout the day. The system provides interior lighting that uses only renewable energy sources, and releases no carbon dioxide emissions into the atmosphere.

  1. Solar concentrator with integrated tracking and light delivery system with collimation

    DOE Patents [OSTI]

    Maxey, Lonnie Curt

    2015-06-09

    A solar light distribution system includes a solar light concentrator that is affixed externally to a light transfer tube. Solar light waves are processed by the concentrator into a collimated beam of light, which is then transferred through a light receiving port and into the light transfer tube. A reflector directs the collimated beam of light through the tube to a light distribution port. The interior surface of the light transfer tube is highly reflective so that the light transfers through the tube with minimal losses. An interchangeable luminaire is attached to the light distribution port and distributes light inside of a structure. A sun tracking device rotates the concentrator and the light transfer tube to optimize the receiving of solar light by the concentrator throughout the day. The system provides interior lighting, uses only renewable energy sources, and releases no carbon dioxide emissions into the atmosphere.

  2. Fuel system pressure control improves NGV performance

    SciTech Connect (OSTI)

    Heenan, J.S.

    1996-09-01

    The use of natural gas as a transportation fuel can offer: emissions and environmental benefits; energy diversity and security. Current reports suggest there are about 1,000,000 natural gas vehicles (NGV) operating around the world. One key component of NGV systems is the pressure regulator. Without accurate pressure regulation it is difficult, and costly, to obtain low emissions and good performance benefits from NGV. The paper discusses a precision, NGV, pressure regulator for fuel injection applications. Critical features of any regulator are flow and pressure output (P{sub out}) error. P{sub out} errors include droop, creep and hysteresis. Fuel injector inlet pressures vary depending on the system design approach. Normally fuel injector inlet pressures vary between 1.7 to 17 bar. Additional topics of discussion include heat exchanger control, using manifold absolute pressure (MAP) to bias the regulator and the effects of undersized inlet and outlet fittings and hoses. Also supplied are comparative emissions test results for one and two-stage regulators. The paper concludes that precision pressure regulation is a cost-effective method to obtain low emissions and good performance.

  3. Bushing retention system for thermal medium cooling delivery tubes in a gas turbine rotor

    DOE Patents [OSTI]

    Mashey, Thomas Charles (Coxsackie, NY)

    2002-01-01

    Bushings are provided in counterbores for wheels and spacers for supporting thermal medium cooling tubes extending axially adjacent the rim of the gas turbine rotor. The retention system includes a retaining ring disposed in a groove adjacent an end face of the bushing and which retaining ring projects radially inwardly to prevent axial movement of the bushing in one direction. The retention ring has a plurality of circumferentially spaced tabs along its inner diameter whereby the ring is supported by the lands of the tube maintaining its bushing retention function, notwithstanding operation in high centrifugal fields and rotation of the ring in the groove into other circular orientations.

  4. Experience in a power plant with a digital control system

    SciTech Connect (OSTI)

    Rayner, H.M.

    1981-01-01

    This paper covers experience with a Measurex DDC energy control system. It gives the advantages of the system, explains the flue gas analyzer system boiler optimization improved boiler efficiency calculations and load allocation techniques.

  5. Spin Transport and Polarimetry in the Beam Delivery System of the International Linear Collider

    E-Print Network [OSTI]

    Beckmann, Moritz; Vauth, Annika; Vormwald, Benedikt

    2014-01-01

    Polarised electron and positron beams are key ingredients to the physics programme of future linear colliders. Due to the chiral nature of weak interactions in the Standard Model - and possibly beyond - the knowledge of the luminosity-weighted average beam polarisation at the $e^+e^-$ interaction point is of similar importance as the knowledge of the luminosity and has to be controlled to permille-level precision in order to fully exploit the physics potential. The current concept to reach this challenging goal combines measurements from Laser-Compton polarimeters before and after the interaction point with measurements at the interaction point. A key element for this enterprise is the understanding of spin-transport effects between the polarimeters and the interaction point as well as collision effects. We show that without collisions, the polarimeters can be cross-calibrated to 0.1 %, and we discuss in detail the impact of collision effects and beam parameters on the polarisation value relevant for the inte...

  6. Optimal Lyapunov-based quantum control for quantum systems

    E-Print Network [OSTI]

    S. C. Hou; M. A. Khan; Daoyi Dong; Ian R. Petersen; X. X. Yi

    2012-09-15

    Quantum Lyapunov control was developed in order to transform a quantum system from arbitrary initial states to a target state. The idea is to find control fields that steer the Lyapunov function to zero as $t\\rightarrow \\infty$, meanwhile the quantum system is driven to the target state. In order to shorten the time required to reach the target state, we propose two designs to optimize Lyapunov control in this paper. The first design makes the Lyapunov function decrease as fast as possible with a constraint on the total power of control fields, and the second design has the same purpose but with a constraint on each control field. Examples of a three-level system demonstrate that the evolution time for Lyapunov control can be significantly shortened, especially when high control fidelity is required. Besides, this optimal Lyapunov-based quantum control is robust against uncertainties in the free Hamiltonian and decoherence in the system compared to conventional Lyapunov control.

  7. Next Generation Nuclear Plant Resilient Control System Functional Analysis

    SciTech Connect (OSTI)

    Lynne M. Stevens

    2010-07-01

    Control Systems and their associated instrumentation must meet reliability, availability, maintainability, and resiliency criteria in order for high temperature gas-cooled reactors (HTGRs) to be economically competitive. Research, perhaps requiring several years, may be needed to develop control systems to support plant availability and resiliency. This report functionally analyzes the gaps between traditional and resilient control systems as applicable to HTGRs, which includes the Next Generation Nuclear Plant; defines resilient controls; assesses the current state of both traditional and resilient control systems; and documents the functional gaps existing between these two controls approaches as applicable to HTGRs. This report supports the development of an overall strategy for applying resilient controls to HTGRs by showing that control systems with adequate levels of resilience perform at higher levels, respond more quickly to disturbances, increase operational efficiency, and increase public protection.

  8. The Powerhouse Control System Audit as a Means of Insuring a Successful System Design and Implementation 

    E-Print Network [OSTI]

    Wood, M. E.; Robinson, J. E.

    1998-01-01

    Improvements to the powerhouse control system can be a cost effective way to improve system efficiency and reliability. A critical step in making these improvements is to conduct a control system audit of the existing process units and their related...

  9. COMPUTATIONAL STUDIES OF CONTROLLED NANOPARTICLE AGGLOMERATIONS FOR MRI-GUIDED NANOROBOTIC DRUG-DELIVERY SYSTEMS

    E-Print Network [OSTI]

    Mavroidis, Constantinos

    groups have employed magnetized micro/ nanoparticles and have implemented magnetic propulsion techniques implementation is difficult and medically invasive. Finally, magnetic propulsion techniques #12;other thanEastern University Boston, MA 02115 mavro@coe.neu.edu ABSTRACT Magnetic Resonance Imaging (MRI) guided nanorobotic

  10. A CMOS LOW POWER FULLY DIGITAL ADAPTIVE POWER DELIVERY SYSTEM BASED ON FINITE STATE MACHINE CONTROL

    E-Print Network [OSTI]

    Ayers, Joseph

    @ece.neu.edu, kkkim@ece.neu.edu , jimd@ia.nsc.com* ABSTRACT A fully digital self-adjusting high efficiency power implementation (consumption (-uniformity of process parameters within a single die; and 2) the increment of power consumption per die [1]-[2]. In deep

  11. Control and Synchronization of Chaotic Fractional-Order Coullet System via Active Controller

    E-Print Network [OSTI]

    M. Shahiri T.; A. Ranjbar N.; R. Ghaderi; S. H. Hosseinnia; S. Momani

    2012-06-12

    In this paper, fractional order Coullet system is studied. An active control technique is applied to control this chaotic system. This type of controller is also applied to synchronize chaotic fractional-order systems in master-slave structure. The synchronization procedure is shown via simulation. The boundary of stability is obtained by both of theoretical analysis and simulation result. The numerical simulations show the effectiveness of the proposed controller.

  12. Apparatus for controlling system state based on unique identifiers

    DOE Patents [OSTI]

    Drotning, William D. (Albuquerque, NM)

    2002-01-01

    An apparatus allows workers to assert and release control over the energization of a system. The apparatus does not require the workers to carry any additional paraphernalia, and is not be easily defeated by other workers. Users asserting and releasing control present tokens uniquely identifying each user to a reader, and the apparatus prevents transition of the system to an undesired state until an appropriate number of users are currently asserting control. For example, a dangerous manufacturing robot can be prevented from energizing until all the users that have asserted control when entering the robot's controlled space have subsequently released control when leaving the robot's controlled space.

  13. Cell mapping description for digital control system with quantization effect

    E-Print Network [OSTI]

    Liang, Wang; Yi-Ping, Guo

    2007-01-01

    Quantization problem in digital control system have attracted more and more attention in these years. Normally, a quantized variable is regarded as a perturbed copy of the unquantized variable in the research of quantization effect, but this model has shown many obvious disadvantages in control system analysis and design process. In this paper, we give a new model for quantization based 'cell mapping' concept. This cell model could clearly describe the global dynamics of quantized digital system. Then some important characteristics of control system like controllability are analyzed by this model. The finite precision control design method based on cell concept is also presented.

  14. Dynamic Optimization for Optimal Control of Water Distribution Systems

    E-Print Network [OSTI]

    Ertin, Emre

    Dynamic Optimization for Optimal Control of Water Distribution Systems Emre Ertin, Anthony N. Dean Columbus OH 43201 ABSTRACT In this paper we consider the design of intelligent control policies for water as a controller for a water distribution system. In the example presented we obtain a 12.5 percent reduction

  15. Stochastic Power Control for Cellular Radio Systems \\Lambda

    E-Print Network [OSTI]

    Yates, Roy

    Stochastic Power Control for Cellular Radio Systems \\Lambda Sennur Ulukus Roy D. Yates July 11 In cellular wireless communication systems, the aim of power control is to assign each user a transmitter power level such that all users satisfy their quality of service (QoS) requirements. The power control

  16. Co-Simulation Tools for Networked Control Systems

    E-Print Network [OSTI]

    Branicky, Michael S.

    , unmanned vehicles, home robotics, distributed virtual environments, power distribution, and building-simulation. The first two tools are extensions to ns-2 called Agent/Plant and NSCSPlant; the third tool integrates and control of the physical world. (right) A networked control system with one controlled system (a.k.a. plant

  17. VEPP-2000 COLLIDER CONTROL SYSTEM* A.Senchenko1,#

    E-Print Network [OSTI]

    Kozak, Victor R.

    VEPP-2000 COLLIDER CONTROL SYSTEM* A.Senchenko1,# , D.Berkaev1,2 , O.Gorbatenko1 , A.Kasaev1 , I of interacting subsystems responding on different acceleration facility parts. Control system software is based presents architecture, implementation and functionality of hardware and software of the collider control

  18. Feedback Control Theory and Processing System Log Streams Research Project

    E-Print Network [OSTI]

    Tang, Pingzhong

    Feedback Control Theory and Processing System Log Streams by Wei Xu Research Project Submitted, and on exploring general techniques of applying feedback control theory to distributed computer systems. We have. All problems addressed are solved systematically with feedback-control-theory. We discuss three uses

  19. Laboratory 12 Control Systems Laboratory ECE3557 Laboratory 12

    E-Print Network [OSTI]

    Laboratory 12 Control Systems Laboratory ECE3557 Laboratory 12 State Feedback Controller for Position Control of a Flexible Link 12.1 Objective The objective of this laboratory is to design a full of the combined system (i.e., servomotor and flexible link) introduced in the Laboratory 9 (refer to [1

  20. NGNP Data Management and Analysis System Analysis and Web Delivery Capabilities

    SciTech Connect (OSTI)

    Cynthia D. Gentillon

    2010-09-01

    Projects for the Very High Temperature Reactor Technology Development Office provide data in support of Nuclear Regulatory Commission licensing of the very high temperature reactor. Fuel and materials to be used in the reactor are tested and characterized to quantify performance in high-temperature and high-fluence environments. In addition, thermal-hydraulic experiments are conducted to validate codes used to assess reactor safety. The Very High Temperature Reactor Technology Development Office has established the NGNP Data Management and Analysis System (NDMAS) at the Idaho National Laboratory to ensure that very high temperature reactor data are (1) qualified for use, (2) stored in a readily accessible electronic form, and (3) analyzed to extract useful results. This document focuses on the third NDMAS objective. It describes capabilities for displaying the data in meaningful ways and for data analysis to identify useful relationships among the measured quantities.

  1. SU-E-T-407: Evaluation of Four Commercial Dosimetry Systems for Routine Patient-Specific Tomotherapy Delivery Quality Assurance

    SciTech Connect (OSTI)

    Xing, A; Arumugam, S; Deshpande, S; George, A; Holloway, L; Vial, P; Goozee, G [Liverpool Cancer Therapy Centre, Sydney, NSW (Australia)

    2014-06-01

    Purpose: The purpose of this project was to evaluate the performance of four commercially available dosimetry systems for Tomotherapy delivery quality assurance (DQA). Methods: Eight clinical patient plans were chosen to represent a range of treatment sites and typical clinical plans. Four DQA plans for each patient plan were created using the TomoTherapy DQA Station (Hi-Art version 4.2.1) on CT images of the ScandiDose Delta4, IBA MatriXX Evolution, PTW Octavius 4D and Sun Nuclear ArcCHECK phantoms. Each detector was calibrated following the manufacture-provided procedure. No angular response correction was applied. All DQA plans for each detector were delivered on the Tomotherapy Hi-Art unit in a single measurement session but on different days. The measured results were loaded into the vendor supplied software for each QA system for comparison with the TPS-calculated dose. The Gamma index was calculated using 3%/3mm, 2%/2mm with 10% dose threshold of maximum TPS calculated dose. Results: Four detector systems showed comparable gamma pass rates for 3%/3m, which is recommended by AAPM TG119 and commonly used within the radiotherapy community. The averaged pass rates ± standard deviation for all DQA plans were (98.35±1.97)% for ArcCHECK, (99.9%±0.87)% for Matrix, (98.5%±5.09)% for Octavius 4D, (98.7%±1.27)% for Delata4. The rank of the gamma pass rate for individual plans was consistent between detectors. Using 2%/2mm Gamma criteria for analysis, the Gamma pass rate decreased on average by 9%, 8%, 6.6% and 5% respectively. Profile and Gamma failure map analysis using the software tools from each dosimetry system indicated that decreased passing rate is mainly due to the threading effect of Tomo plan. Conclusion: Despite the variation in detector type and resolution, phantom geometry and software implementation, the four systems demonstrated similar dosimetric performance, with the rank of the gamma pass rate consistent for the plans considered.

  2. Introduction to Control Theory And Its Application to Computing Systems

    E-Print Network [OSTI]

    Lu, Chenyang

    Chapter 7 Introduction to Control Theory And Its Application to Computing Systems Tarek Abdelzaher the design of feedback control in an ad hoc manner. Control theory provides a systematic ap- proach to their steady state values. This pa- per provides an introduction to control theory for computing practitioners

  3. Development of Building Automation and Control Systems

    E-Print Network [OSTI]

    Yang, Yang; Zhu, Qi; Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

    2012-01-01

    distributed embedded systems, and embedded software. Yangon dis- tributed embedded systems while reducing com-for distributed embedded systems, cyberphysical sys- tems,

  4. Occupant Response to Window Control Signaling Systems

    E-Print Network [OSTI]

    Ackerly, Katherine

    2012-01-01

    and conventional  cooling systems.  Building Research & occupant type, cooling system and climate).  Understanding the hydronic  heating and cooling systems in the perimeter 

  5. CONTROL SYSTEM FOR SOLAR HEATING and COOLING

    E-Print Network [OSTI]

    Dols, C.

    2010-01-01

    operating solar heating and cooling systems covering a widepractical heating and cooling system configurations andexperimental heating and cooling system, the main purpose of

  6. Optimal control for biological movement systems

    E-Print Network [OSTI]

    Li, Weiwei

    2006-01-01

    discrete time nonlinear dynamical system with state variablecontrol of nonlinear dynamical systems. We illustrated itsConsider the nonlinear dynamical system described by the

  7. Computer aided analysis and synthesis for discrete robust control systems 

    E-Print Network [OSTI]

    Setijawan, Bambang

    1994-01-01

    of an interval discrete system. . 4 Nyquist plot of the system with a constant controller k = -3. . . . . 5 Definition of encirclement. . Page 27 28 30 6 Definition of enclosed points and regions. . 7 Definition of the number of encirclement and enclosure... unstable 1 Re marginally stable Fig. 1. Stability region for discrete time systems A general control system is presented in the following figure, r e + controller C(z) PLANT G(z) Fig. 2. A general form of control systems Any physical process...

  8. Active vibration control of a fluid/plate system using a pole placement controller

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Active vibration control of a fluid/plate system using a pole placement controller Bogdan Robu reduction of the structural vibrations induced by the sloshing of large masses of fuel inside a partly full, published in "International Journal of Control 85, 6 (2012) 684-694" #12;Keywords Flexible system, fluid

  9. Limit Cycles of Controlled Switched Systems: Existence, Stability, Sensitivity

    E-Print Network [OSTI]

    Doyen, Laurent

    in a desired region of equilibrium. The method is illustrated on the boost DC-DC converter example. We also to a control rule. A classical example of sampled switched system is the boost DC-DC converter. The control

  10. Event-triggered control for multi-agent systems

    E-Print Network [OSTI]

    Johansson, Karl H.

    Event-driven strategies for multi-agent systems are motivated by the future use of embedded microprocessors with limited resources that will gather information and actuate the individual agent controller updates. The control ...

  11. Demand Control Utilizing Energy Management Systems - Report of Field Tests 

    E-Print Network [OSTI]

    Russell, B. D.; Heller, R. P.; Perry, L. W.

    1984-01-01

    Energy Management systems and particularly demand controllers are becoming more popular as commercial and light industrial operations attempt to reduce their electrical usage and demand. Numerous techniques are used to control energy use and demand...

  12. A Systems Integration Approach To Lighting Control Systems 

    E-Print Network [OSTI]

    Lynch, S.; Renner, R. A.

    2000-01-01

    -ROM that includes interactive components such as a lighting controls tutorial, a controls project estimator, and a comprehensive controls product catalog. To date, more than two thousand copies of this CD have been distributed, with a target goal of 20...

  13. On Cyber Security for Networked Control Systems

    E-Print Network [OSTI]

    Amin, Saurabh

    2011-01-01

    Attacks Against Water SCADA Systems . . . . . . . . . .2 d (bottom) [simulated results]. . Gignac SCADA supervisoryGignac canal network and SCADA system . . . . . . . . .

  14. Preliminary Study Using ForwardPreliminary Study Using Forward Reaction Control System JetsReaction Control System Jets

    E-Print Network [OSTI]

    Valasek, John

    Preliminary Study Using ForwardPreliminary Study Using Forward Reaction Control System JetsReaction Control System Jets During Space Shuttle EntryDuring Space Shuttle Entry Carolina Restrepo Currently the shuttle uses only aft RCS jets for yaw control during entry Enough to handle present flight

  15. Flood Control with Model Predictive Control for River Systems with Water Reservoirs

    E-Print Network [OSTI]

    Flood Control with Model Predictive Control for River Systems with Water Reservoirs Maarten consisting of multiple channels, gates, and a water reservoir. One controller is used in combination of measured water levels. It was observed that the influence of this estimator on the control performance

  16. Cyber Security Testing and Training Programs for Industrial Control Systems

    SciTech Connect (OSTI)

    Daniel Noyes

    2012-03-01

    Service providers rely on industrial control systems (ICS) to manage the flow of water at dams, open breakers on power grids, control ventilation and cooling in nuclear power plants, and more. In today's interconnected environment, this can present a serious cyber security challenge. To combat this growing challenge, government, private industry, and academia are working together to reduce cyber risks. The Idaho National Laboratory (INL) is a key contributor to the Department of Energy National SCADA Test Bed (NSTB) and the Department of Homeland Security (DHS) Control Systems Security Program (CSSP), both of which focus on improving the overall security posture of ICS in the national critical infrastructure. In support of the NSTB, INL hosts a dedicated SCADA testing facility which consists of multiple control systems supplied by leading national and international manufacturers. Within the test bed, INL researchers systematically examine control system components and work to identify vulnerabilities. In support of the CSSP, INL develops and conducts training courses which are designed to increase awareness and defensive capabilities for IT/Control System professionals. These trainings vary from web-based cyber security trainings for control systems engineers to more advanced hands-on training that culminates with a Red Team/ Blue Team exercise that is conducted within an actual control systems environment. INL also provides staffing and operational support to the DHS Industrial Control Systems Cyber Emergency Response Team (ICS-CERT) Security Operations Center which responds to and analyzes control systems cyber incidents across the 18 US critical infrastructure sectors.

  17. Voltage control on a train system

    DOE Patents [OSTI]

    Gordon, Susanna P.; Evans, John A.

    2004-01-20

    The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to predict low voltages before they occur. Once voltages are predicted, then multiple trains can be controlled to prevent low voltage events. Further, algorithms for managing inference are presented in the present invention. Different types of interference problems are addressed in the present invention such as "Interference During Acceleration", "Interference Near Station Stops", and "Interference During Delay Recovery." Managing such interference avoids unnecessary brake/acceleration cycles during acceleration, immediately before station stops, and after substantial delays. Algorithms are demonstrated to avoid oscillatory brake/acceleration cycles due to interference and to smooth the trajectories of closely following trains. This is achieved by maintaining sufficient following distances to avoid unnecessary braking/accelerating. These methods generate smooth train trajectories, making for a more comfortable ride, and improve train motor reliability by avoiding unnecessary mode-changes between propulsion and braking. These algorithms can also have a favorable impact on traction power system requirements and energy consumption.

  18. CLIC-ACM: Acquisition and Control System

    E-Print Network [OSTI]

    Bielawski, B; Magnoni, S

    2014-01-01

    CLIC [1] (Compact Linear Collider) is a world-wide collaboration to study the next terascale lepton collider, relying upon a very innovative concept of two-beamacceleration. In this scheme, the power is transported to the main accelerating structures by a primary electron beam. The Two Beam Module (TBM) is a compact integration with a high filling factor of all components: RF, Magnets, Instrumentation, Vacuum, Alignment and Stabilization. This paper describes the very challenging aspects of designing the compact system to serve as a dedicated Acquisition & Control Module (ACM) for all signals of the TBM. Very delicate conditions must be considered, in particular radiation doses that could reach several kGy in the tunnel. In such severe conditions shielding and hardened electronics will have to be taken into consideration. In addition, with more than 300 ADC&DAC channels per ACM and about 21000 ACMs in total, it appears clearly that power consumption will be an important issue. It is also obvious that...

  19. Green Scheduling: Scheduling of Control Systems for Peak Power Reduction

    E-Print Network [OSTI]

    Pappas, George J.

    Green Scheduling: Scheduling of Control Systems for Peak Power Reduction Truong Nghiem, Madhur Behl, George J. Pappas and Rahul Mangharam Department of Electrical and Systems Engineering University and air quality control systems within buildings and datacenters operate independently of each other

  20. Remote-Controlled Home Automation Systems with Different Network Technologies

    E-Print Network [OSTI]

    Davies, John N.

    Remote-Controlled Home Automation Systems with Different Network Technologies Armando Roy Delgado into the potential for remote controlled operation of home automation systems. It considers problems, 2002) which certainly requires a careful study before developing any suitable Home Automation System

  1. Changes in Pilot Control Behaviour across Stewart Platform Motion Systems

    E-Print Network [OSTI]

    Changes in Pilot Control Behaviour across Stewart Platform Motion Systems F. M. Nieuwenhuizen1,2, H system bandwidth has a significant effect on performance and control behaviour. Participants barely use of Korea Low-cost motion systems have been proposed for certain training tasks that would otherwise

  2. A Smart Energy System with Distributed Access Control

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    A Smart Energy System with Distributed Access Control Cheng-Ting Lee, Cheng-Hsun Yang, Chun.chou}@gmail.com Abstract--This paper presents a new smart energy (SE) system with distributed access control. Many other SE with minimal power, latency, and cost overhead. I. INTRODUCTION Smart energy (SE) systems have been one

  3. Coordinated joint motion control system with position error correction

    DOE Patents [OSTI]

    Danko, George (Reno, NV)

    2011-11-22

    Disclosed are an articulated hydraulic machine supporting, control system and control method for same. The articulated hydraulic machine has an end effector for performing useful work. The control system is capable of controlling the end effector for automated movement along a preselected trajectory. The control system has a position error correction system to correct discrepancies between an actual end effector trajectory and a desired end effector trajectory. The correction system can employ one or more absolute position signals provided by one or more acceleration sensors supported by one or more movable machine elements. Good trajectory positioning and repeatability can be obtained. A two-joystick controller system is enabled, which can in some cases facilitate the operator's task and enhance their work quality and productivity.

  4. Help for the Developers of Control System Cyber Security Standards

    SciTech Connect (OSTI)

    Robert P. Evans

    2008-05-01

    A Catalog of Control Systems Security: Recommendations for Standards Developers (Catalog), aimed at assisting organizations to facilitate the development and implementation of control system cyber security standards, has been developed. This catalog contains requirements that can help protect control systems from cyber attacks and can be applied to the Critical Infrastructures and Key Resources of the United States and other nations. The requirements contained in the catalog are a compilation of practices or various industry bodies used to increase the security of control systems from both physical and cyber attacks. They should be viewed as a collection of recommendations to be considered and judiciously employed, as appropriate, when reviewing and developing cyber security standards for control systems. The recommendations in the Catalog are intended to be broad enough to provide any industry using control systems the flexibility needed to develop sound cyber security standards specific to their individual security requirements.

  5. Control and optimization system and method for chemical looping processes

    SciTech Connect (OSTI)

    Lou, Xinsheng; Joshi, Abhinaya; Lei, Hao

    2014-06-24

    A control system for optimizing a chemical loop system includes one or more sensors for measuring one or more parameters in a chemical loop. The sensors are disposed on or in a conduit positioned in the chemical loop. The sensors generate one or more data signals representative of an amount of solids in the conduit. The control system includes a data acquisition system in communication with the sensors and a controller in communication with the data acquisition system. The data acquisition system receives the data signals and the controller generates the control signals. The controller is in communication with one or more valves positioned in the chemical loop. The valves are configured to regulate a flow of the solids through the chemical loop.

  6. Impacts of Control and Communication System Vulnerabilities on Power Systems Under

    E-Print Network [OSTI]

    Hayat, Majeed M.

    1 Impacts of Control and Communication System Vulnerabilities on Power Systems Under Contingencies vulnerabilities such as failures of the communication and control systems that transmit and implement critical smart grids. In this paper the vulnerabilities in the control and communication system are coupled

  7. OGY Control of Haken Like Systems on Different Poincare Sections

    E-Print Network [OSTI]

    Mozhgan Mombeini

    2012-06-05

    The Chua system, the Lorenz system, the Chen system and The L\\"u system are chaotic systems that their state space equations is very similar to Haken system which is a nonlinear model of a optical slow-fast system. These Haken-Like Sys-tems have very similar properties. All have two slow but unstable eigenvalues and one fastest but stable eigenvalue. This lets that an approximation of slow manifold be equivalent with unstable manifold of the system. In other hand, control of discreet model of the system on a defined manifold (Poincare map) is main essence of some important control methods of chaotic systems for example OGY method. Here, by using different methods of defining slow manifold of the H-L systems the efficiency of the OGY control for stabilizing problem investigated.

  8. A Multiobjective Optimization Framework for Stochastic Control of Complex Systems

    SciTech Connect (OSTI)

    Malikopoulos, Andreas; Maroulas, Vasileios; Xiong, Professor Jie

    2015-01-01

    This paper addresses the problem of minimizing the long-run expected average cost of a complex system consisting of subsystems that interact with each other and the environment. We treat the stochastic control problem as a multiobjective optimization problem of the one-stage expected costs of the subsystems, and we show that the control policy yielding the Pareto optimal solution is an optimal control policy that minimizes the average cost criterion for the entire system. For practical situations with constraints consistent to those we study here, our results imply that the Pareto control policy may be of value in deriving online an optimal control policy in complex systems.

  9. Engine control system having speed-based timing

    DOE Patents [OSTI]

    Willi, Martin L. (Dunlap, IL); Fiveland, Scott B. (Metamora, IL); Montgomery, David T. (Edelstein, IL); Gong, Weidong (Dunlap, IL)

    2012-02-14

    A control system for an engine having a cylinder is disclosed having an engine valve movable to regulate a fluid flow of the cylinder and an actuator associated with the engine valve. The control system also has a controller in communication with the actuator. The controller is configured to receive a signal indicative of engine speed and compare the engine speed signal with a desired engine speed. The controller is also configured to selectively regulate the actuator to adjust a timing of the engine valve to control an amount of air/fuel mixture delivered to the cylinder based on the comparison.

  10. Predict-prevent control method for perturbed excitable systems

    E-Print Network [OSTI]

    Marzena Ciszak; Claudio R. Mirasso; Raul Toral; Oscar Calvo

    2008-07-15

    We present a control method based on two steps: prediction and prevention. For prediction we use the anticipated synchronization scheme, considering unidirectional coupling between excitable systems in a master-slave configuration. The master is the perturbed system to be controlled, meanwhile the slave is an auxiliary system which is used to predict the master's behavior. We demonstrate theoretically and experimentally that an efficient control may be achieved.

  11. Critical issues in process control system security : DHS spares project.

    SciTech Connect (OSTI)

    Hernandez, Jacquelynne; McIntyre, Annie; Henrie, Morgan

    2010-10-01

    The goals of this event are: (1) Discuss the next-generation issues and emerging risks in cyber security for control systems; (2) Review and discuss common control system architectures; (3) Discuss the role of policy, standards, and supply chain issues; (4) Interact to determine the most pertinent risks and most critical areas of the architecture; and (5) Merge feedback from Control System Managers, Engineers, IT, and Auditors.

  12. Development of an NC equipment level controller in a hierarchical shop floor control system 

    E-Print Network [OSTI]

    Chang, William

    1993-01-01

    The methodology of developing an NC equipment controller in a Computer Integrated Manufacturing (CIM) System, which is based on a philosophy of hierarchical shop floor control, is presented in this research. The underlying architecture consists...

  13. Operational test procedure for pumping and instrumentation control skid SALW-6001B monitor and control system

    SciTech Connect (OSTI)

    Garcia, M.F.

    1995-11-01

    This OTP shall verify and document that the monitor and control system comprised of PICS SALW-6001B PLC, 242S PLC, Operator Control Station, and communication network is functioning per operational requirements.

  14. Control Systems Cyber Security: Defense-in-Depth Strategies

    SciTech Connect (OSTI)

    Mark Fabro

    2007-10-01

    Information infrastructures across many public and private domains share several common attributes regarding IT deployments and data communications. This is particularly true in the control systems domain. A majority of the systems use robust architectures to enhance business and reduce costs by increasing the integration of external, business, and control system networks. However, multi-network integration strategies often lead to vulnerabilities that greatly reduce the security of an organization, and can expose mission-critical control systems to cyber threats. This document provides guidance and direction for developing ‘defense-in-depth’ strategies for organizations that use control system networks while maintaining a multi-tier information architecture that requires: • Maintenance of various field devices, telemetry collection, and/or industrial-level process systems • Access to facilities via remote data link or modem • Public facing services for customer or corporate operations • A robust business environment that requires connections among the control system domain, the external Internet, and other peer organizations.

  15. Control Systems Cyber Security:Defense in Depth Strategies

    SciTech Connect (OSTI)

    David Kuipers; Mark Fabro

    2006-05-01

    Information infrastructures across many public and private domains share several common attributes regarding IT deployments and data communications. This is particularly true in the control systems domain. A majority of the systems use robust architectures to enhance business and reduce costs by increasing the integration of external, business, and control system networks. However, multi-network integration strategies often lead to vulnerabilities that greatly reduce the security of an organization, and can expose mission-critical control systems to cyber threats. This document provides guidance and direction for developing ‘defense-in-depth’ strategies for organizations that use control system networks while maintaining a multi-tier information architecture that requires: Maintenance of various field devices, telemetry collection, and/or industrial-level process systems Access to facilities via remote data link or modem Public facing services for customer or corporate operations A robust business environment that requires connections among the control system domain, the external Internet, and other peer organizations.

  16. Experimental Studies for DPF and SCR Model, Control System, and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels Measuring PM Distribution in a Catalyzed Particulate Filter using a Terahertz Wave Scanner...

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

    Energy Savers [EERE]

    based on open-source specifications that enables secured interoperability among energy control systems devices. This interoperable capability was also demonstrated in a...

  18. Montana Ground Water Pollution Control System Permit Application...

    Open Energy Info (EERE)

    Montana Ground Water Pollution Control System Permit Application Forms Webpage Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Montana Ground Water...

  19. TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND THEIR ASSOCIATED...

    Broader source: Energy.gov (indexed) [DOE]

    Vulnerabilities of Control Systems and Their Associated Migitations (2006) Introduction SCADA Security for Managers and Operators DOE National SCADA Test Bed Program Multi-Year...

  20. Top 10 Vulnerabilities of Control Systems and Their Associated...

    Broader source: Energy.gov (indexed) [DOE]

    and Theif Associated Mitigations (2006) More Documents & Publications Introduction SCADA Security for Managers and Operators TOP 10 VULNERABILITIES OF CONTROL SYSTEMS AND...

  1. A Summary of Control System Security Standards Activities in...

    Office of Environmental Management (EM)

    security topic. This work focuses on control systems standards applicable to the energy (oil, gas, and electric, but not nuclear) sector. Summary of CS Standards Activities in the...

  2. A digital-based excitation system for generator voltage control

    SciTech Connect (OSTI)

    D'Antonio, M.J.; Lawson, R.A.; Pearson, W.R. (General Electric Co., Salem, VA (US)); Speer, G.W. (General Electric Canada, Peterborough, Ontario (CA)); Crenshaw, M.L.; Murdoch, A. (GE Industrial and Power Systems, Power Systems Engineering Dept., Schenectady, NY (US))

    1991-01-01

    Excitation systems have evolved over the years as new technology is introduced, offering easier implementations, higher reliability, less maintenance, enhanced functionality, and user friendly interfaces. Microprocessor based controls are now common in electric drives, protective relaying, turbine controls, power plant displays and supervisory control functions. The flexibility, functionality, and user friendly interface capabilities of digital controls are now available for excitation systems. This paper provides an overview of GE's first generation digital excitation system, SILCO 5, and an introduction to GE's second generation system, EX2000, currently in development.

  3. Analysis of Lyapunov Control for Hamiltonian Quantum Systems

    E-Print Network [OSTI]

    Xiaoting Wang; Sonia Schirmer

    2008-05-19

    We present detailed analysis of the convergence properties and effectiveness of Lyapunov control design for bilinear Hamiltonian quantum systems based on the application of LaSalle's invariance principle and stability analysis from dynamical systems and control theory. For a certain class of Hamiltonians, strong convergence results can be obtained for both pure and mixed state systems. The control Hamiltonians for realistic physical systems, however, generally do not fall in this class. It is shown that the effectiveness of Lyapunov control design in this case is significantly diminished.

  4. Recommended Practice for Securing Control System Modems | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Modems This paper addresses an often overlooked "backdoor" into critical infrastructure control systems created by modem connections. A modem's connection to the public telephone...

  5. Performance of Johnson Matthey EGRT? Emission Control System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2 Performance of Johnson Matthey EGRT Emission Control System for NOx and PM Emission Reduction in Retrofit Applications Part 2 2002 DEER Conference Presentation: Johnson Matthey...

  6. Performance of Johnson Matthey EGRT? Emission Control System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1 Performance of Johnson Matthey EGRT Emission Control System for NOx and PM Emission Reduction in Retrofit Applications Part 1 2002 DEER Conference Presentation: Johnson Matthey...

  7. Reference Model for Control and Automation Systems in Electrical...

    Office of Environmental Management (EM)

    Reference Model for Control and Automation Systems in Electrical Power Version 1.2 October 12, 2005 Prepared by: Sandia National Laboratories' Center for SCADA Security Jason...

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

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and security management to enable energy asset owners to design a secure, networked control systems architecture. The project is led by Siemens Corporate Research in partnership...

  9. Design, fabrication, and characterization of controllable conducting polymer actuation systems

    E-Print Network [OSTI]

    Paster, Eli (Eli Travis)

    2010-01-01

    The geometric, hierarchal, multifunctional composition of mammalian skeletal muscle and the neuromuscular system consists of actuation elements, length sensors, force sensors, localized energy storage, controlled energy ...

  10. Control of an Active Magnetic Bearing-Rotor System

    E-Print Network [OSTI]

    Kang, Christopher

    2014-01-01

    Active Magnetic Bearing-RotorRotation of Magnetic Bearing. ” Precision Engineering, 27(and Control of a Magnetic Bearing System. ” In American

  11. Flex power perspectives of indirect power system control through...

    Open Energy Info (EERE)

    Flex power perspectives of indirect power system control through dynamic power price (Smart Grid Project) Jump to: navigation, search Project Name Flex power perspectives of...

  12. Install an Automatic Blowdown-Control System | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Install an Automatic Blowdown-Control System (January 2012) More Documents & Publications Minimize Boiler Blowdown Recover Heat from Boiler Blowdown CIBO Energy Efficiency Handbook...

  13. Window Signaling Systems: Control Strategies & Occupant Behavior

    E-Print Network [OSTI]

    Ackerly, Katie; Brager, Gail

    2012-01-01

    Control Strategies & Occupant Behavior Katie Ackerly a ,signals play a role in occupant behavior and response. Theignored. Results: Occupant Behavior While thermal comfort

  14. Distributionally robust control of constrained stochastic systems

    E-Print Network [OSTI]

    Bart P.G. Van Parys

    2013-05-01

    May 1, 2013 ... The proposed methods are illustrated for a wind turbine blade control design case study where flexibility issues play an important role, and for ...

  15. Closing the Gap in Control System Implementations

    E-Print Network [OSTI]

    Saha, Indranil

    2013-01-01

    time required for the jet engine compressor for differentof the controller of the jet engine compressor running forbackstepping design for a jet engine compressor model. ”

  16. Servo control booster system for minimizing following error

    DOE Patents [OSTI]

    Wise, William L. (Mountain View, CA)

    1985-01-01

    A closed-loop feedback-controlled servo system is disclosed which reduces command-to-response error to the system's position feedback resolution least increment, .DELTA.S.sub.R, on a continuous real-time basis for all operating speeds. The servo system employs a second position feedback control loop on a by exception basis, when the command-to-response error .gtoreq..DELTA.S.sub.R, to produce precise position correction signals. When the command-to-response error is less than .DELTA.S.sub.R, control automatically reverts to conventional control means as the second position feedback control loop is disconnected, becoming transparent to conventional servo control means. By operating the second unique position feedback control loop used herein at the appropriate clocking rate, command-to-response error may be reduced to the position feedback resolution least increment. The present system may be utilized in combination with a tachometer loop for increased stability.

  17. Optimal control of population transfer in Markovian open quantum systems

    E-Print Network [OSTI]

    Wei Cui; Zairong Xi; Yu Pan

    2010-04-27

    There has long been interest to control the transfer of population between specified quantum states. Recent work has optimized the control law for closed system population transfer by using a gradient ascent pulse engineer- ing algorithm [1]. Here, a spin-boson model consisting of two-level atoms which interact with the dissipative environment, is investigated. With opti- mal control, the quantum system can invert the populations of the quantum logic states. The temperature plays an important role in controlling popula- tion transfer. At low temperatures the control has active performance, while at high temperatures it has less erect. We also analyze the decoherence be- havior of open quantum systems with optimal population transfer control, and we find that these controls can prolong the coherence time. We hope that active optimal control can help quantum solid-state-based engineering.

  18. An implantable device for localized drug delivery and sensing

    E-Print Network [OSTI]

    Daniel, Karen D

    2009-01-01

    There are many potential clinical applications for localized drug delivery and sensing systems, such as cancer, vaccinations, pain management, and hormone therapy. Localized drug delivery systems reduce the amount of drug ...

  19. Control system and method for a hybrid electric vehicle

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH)

    2001-03-06

    Several control methods are presented for application in a hybrid electric vehicle powertrain including in various embodiments an engine, a motor/generator, a transmission coupled at an input thereof to receive torque from the engine and the motor generator coupled to augment torque provided by the engine, an energy storage device coupled to receive energy from and provide energy to the motor/generator, an engine controller (EEC) coupled to control the engine, a transmission controller (TCM) coupled to control the transmission and a vehicle system controller (VSC) adapted to control the powertrain.

  20. Embedded Sensors and Controls to Improve Component Performance and Reliability - System Dynamics Modeling and Control System Design

    SciTech Connect (OSTI)

    Melin, Alexander M.; Kisner, Roger A.; Fugate, David L.

    2013-10-01

    This report documents the current status of the modeling, control design, and embedded control research for the magnetic bearing canned rotor pump being used as a demonstration platform for deeply integrating instrumentation and controls (I{\\&}C) into nuclear power plant components. This pump is a highly inter-connected thermo/electro/mechanical system that requires an active control system to operate. Magnetic bearings are inherently unstable system and without active, moment by moment control, the rotor would contact fixed surfaces in the pump causing physical damage. This report details the modeling of the pump rotordynamics, fluid forces, electromagnetic properties of the protective cans, active magnetic bearings, power electronics, and interactions between different dynamical models. The system stability of the unforced and controlled rotor are investigated analytically. Additionally, controllers are designed using proportional derivative (PD) control, proportional integral derivative (PID) control, voltage control, and linear quadratic regulator (LQR) control. Finally, a design optimization problem that joins the electrical, mechanical, magnetic, and control system design into one problem to balance the opposing needs of various design criteria using the embedded system approach is presented.

  1. Notional Examples and Benchmark Aspects Of a Resilient Control System

    SciTech Connect (OSTI)

    Craig. G. Rieger

    2010-08-01

    Digital control system technology has pervaded most industries, leading to improvements in the efficiency and reliability of the associated operations. However, the ease of distributing and connecting related control systems for the purposes of increasing performance has resulted in interdependencies that can lead to unexpected conditions. Even with less complex designs, operators and engineers alike are often left with competing goals that are difficult to resolve. A fundamental reason for this dichotomy is that responsibilities lie with different disciplines, and operations are hosted on separate control systems. In addition, with the rising awareness of cyber security and diverse human interactions with control systems, an understanding of human actions from a malicious and benevolent standpoint is necessary. Resilience considers the multiple facets of requirements that drive the performance of control systems in a holistic fashion, whether they are security or stability, stability or efficiency, human interactions or complex interdependencies. As will be shown by example, current research philosophies lack the depth or the focus on the control system application to satisfy these requirements, such as graceful degradation of hierarchical control while under cyber attack. A resilient control system promises to purposefully consider these diverse requirements, developing an adaptive capacity to complex events that can lead to failure of traditional control system designs.

  2. Control Landscapes for Observable Preparation with Open Quantum Systems

    E-Print Network [OSTI]

    Rebing Wu; Alexander Pechen; Herschel Rabitz; Michael Hsieh; Benjamin Tsou

    2007-08-16

    A quantum control landscape is defined as the observable as a function(al) of the system control variables. Such landscapes were introduced to provide a basis to understand the increasing number of successful experiments controlling quantum dynamics phenomena. This paper extends the concept to encompass the broader context of the environment having an influence. For the case that the open system dynamics are fully controllable, it is shown that the control landscape for open systems can be lifted to the analysis of an equivalent auxiliary landscape of a closed composite system that contains the environmental interactions. This inherent connection can be analyzed to provide relevant information about the topology of the original open system landscape. Application to the optimization of an observable expectation value reveals the same landscape simplicity observed in former studies on closed systems. In particular, no false sub-optimal traps exist in the system control landscape when seeking to optimize an observable, even in the presence of complex environments. Moreover, a quantitative study of the control landscape of a system interacting with a thermal environment shows that the enhanced controllability attainable with open dynamics significantly broadens the range of the achievable observable values over the control landscape.

  3. Effectiveness-weighted control method for a cooling system

    DOE Patents [OSTI]

    Campbell, Levi A.; Chu, Richard C.; David, Milnes P.; Ellsworth Jr., Michael J.; Iyengar, Madhusudan K.; Schmidt, Roger R.; Simons, Robert E.

    2015-12-15

    Energy efficient control of cooling system cooling of an electronic system is provided based, in part, on weighted cooling effectiveness of the components. The control includes automatically determining speed control settings for multiple adjustable cooling components of the cooling system. The automatically determining is based, at least in part, on weighted cooling effectiveness of the components of the cooling system, and the determining operates to limit power consumption of at least the cooling system, while ensuring that a target temperature associated with at least one of the cooling system or the electronic system is within a desired range by provisioning, based on the weighted cooling effectiveness, a desired target temperature change among the multiple adjustable cooling components of the cooling system. The provisioning includes provisioning applied power to the multiple adjustable cooling components via, at least in part, the determined control settings.

  4. Introduction of Heat Recovery Chiller Control and Water System Design 

    E-Print Network [OSTI]

    Jia, J.

    2006-01-01

    The styles, feature and main concerns of heat recovery water system are discussed, and the entering condenser water temperature control is recommended for higher chiller efficiency and reliable operation. Three optimized water system designs...

  5. A Power Control System for a Paper Mill 

    E-Print Network [OSTI]

    Richter, G. H.; Keenon, D.

    1979-01-01

    This paper describes the Power Demand Control System installed at the Lufkin Mill of Southland Division, St. Regis Paper Company. The system is based around a microprocessor unit that automatically changes the output of the generators to maintain a...

  6. Effectiveness-weighted control of cooling system components

    DOE Patents [OSTI]

    Campbell, Levi A.; Chu, Richard C.; David, Milnes P.; Ellsworth Jr., Michael J.; Iyengar, Madhusudan K.; Schmidt, Roger R.; Simmons, Robert E.

    2015-12-22

    Energy efficient control of cooling system cooling of an electronic system is provided based, in part, on weighted cooling effectiveness of the components. The control includes automatically determining speed control settings for multiple adjustable cooling components of the cooling system. The automatically determining is based, at least in part, on weighted cooling effectiveness of the components of the cooling system, and the determining operates to limit power consumption of at least the cooling system, while ensuring that a target temperature associated with at least one of the cooling system or the electronic system is within a desired range by provisioning, based on the weighted cooling effectiveness, a desired target temperature change among the multiple adjustable cooling components of the cooling system. The provisioning includes provisioning applied power to the multiple adjustable cooling components via, at least in part, the determined control settings.

  7. Co-Simulation of Building Energy and Control Systems with the Building Controls Virtual Test Bed

    E-Print Network [OSTI]

    Wetter, Michael

    2012-01-01

    protocol for building automation and control networks, 2004.other. Interfaces to Building Automation Systems (BAS) arebuilding performance simulation environment for early design support. Automation

  8. Assessment of Available Particle Size Data to Support an Analysis of the Waste Feed Delivery System Transfer System

    SciTech Connect (OSTI)

    JEWETT, J.R.

    2000-08-10

    Available data pertaining to size distribution of the particulates in Hanford underground tank waste have been reviewed. Although considerable differences exist between measurement methods, it may be stated with 95% confidence that the median particle size does not exceed 275 {micro}m in at least 95% of the ten tanks selected as sources of HLW feed for Phase 1 vitrification in the RPP. This particle size is recommended as a design basis for the WFD transfer system.

  9. A COMPRESSOR SURGE CONTROL SYSTEM: COMBINATION ACTIVE SURGE CONTROL SYSTEM AND SURGE AVOIDANCE SYSTEM

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    SYSTEM Nur Uddin Engineering Cybernetics Norwegian University of Science and Technology Trondheim, Norway 7491 Email: nur.uddin@itk.ntnu.no Jan Tommy Gravdahl Engineering Cybernetics Norwegian University of Science and Technology Trondheim, Norway 7491 Email: Jan.Tommy.Gravdahl@itk.ntnu.no ABSTRACT A novel

  10. Experimental Validation of a Resilient Monitoring and Control System

    SciTech Connect (OSTI)

    Wen-Chiao Lin; Kris R. E. Villez; Humberto E. Garcia

    2014-05-01

    Complex, high performance, engineering systems have to be closely monitored and controlled to ensure safe operation and protect public from potential hazards. One of the main challenges in designing monitoring and control algorithms for these systems is that sensors and actuators may be malfunctioning due to malicious or natural causes. To address this challenge, this paper addresses a resilient monitoring and control (ReMAC) system by expanding previously developed resilient condition assessment monitoring systems and Kalman filter-based diagnostic methods and integrating them with a supervisory controller developed here. While the monitoring and diagnostic algorithms assess plant cyber and physical health conditions, the supervisory controller selects, from a set of candidates, the best controller based on the current plant health assessments. To experimentally demonstrate its enhanced performance, the developed ReMAC system is then used for monitoring and control of a chemical reactor with a water cooling system in a hardware-in-the-loop setting, where the reactor is computer simulated and the water cooling system is implemented by a machine condition monitoring testbed at Idaho National Laboratory. Results show that the ReMAC system is able to make correct plant health assessments despite sensor malfunctioning due to cyber attacks and make decisions that achieve best control actions despite possible actuator malfunctioning. Monitoring challenges caused by mismatches between assumed system component models and actual measurements are also identified for future work.

  11. Containment Control of Discrete-time Multi-agent Systems Based on Delayed Neighbors’ Information

    E-Print Network [OSTI]

    Shuai, Liu

    2013-01-01

    Unmanned Aerial Vehicle (UAV) formation control, thein many practical systems such as UAV formation control, the

  12. ME 413 Systems Dynamics & Control Chapter 6: Electrical Systems and Electromechanical Systems ChapterChapterChapterChapter 6666

    E-Print Network [OSTI]

    Al-Qahtani, Hussain M.

    ME 413 Systems Dynamics & Control Chapter 6: Electrical Systems and Electromechanical Systems 1SystemsSystemsSystems andandandand Electromechanical SystemsElectromechanical SystemsElectromechanical SystemsElectromechanical and Electromechanical Systems 2/20 Current Source and Voltage Source A voltage source is a device that causes

  13. Co-design of Control Algorithm and Embedded Platformfor Building HVAC Systems

    E-Print Network [OSTI]

    Maasoumy, Mehdi; Zhu, Qi; Li, Cheng; Meggers, Forrest; Sangiovanni-Vincentelli, Alberto

    2013-01-01

    A design flow for building automation and control systems,”Development of building automation and control systems,”systems as part of a Building Automation System (BAS). The

  14. EEE 481 Computer Controlled Systems (4) [S] Course (Catalogue) Description

    E-Print Network [OSTI]

    Zhang, Junshan

    -Host communications and MATLAB programming. 4. A/D-D/A converters. 5. Modeling and implementation of a virtual heat software to implement embedded controllers. Course Topics: 1. Examples of computer controlled systems Open transfer experiment; PID control. 6. Implementation of simple least-squares and Kalman filter estimators

  15. Regulation and controlled synchronization for complex dynamical systems

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Regulation and controlled synchronization for complex dynamical systems H.J.C. Huijberts #3; H of controlled synchronization as a regulator problem. In controlled synchronization one is given autonomous of the problem where the standard solvability assumptions for the regulator problem are not met turn out to have

  16. EECS 598 Special Topic Power System Dynamics and Control

    E-Print Network [OSTI]

    Cafarella, Michael J.

    for enabling aggregate load to track fluctuations in renewable generation, and the use of model predictive-disruptive load control, model predictive control. Prerequisites: EECS 463 (or Permission of Instructor). CourseEECS 598 Special Topic Power System Dynamics and Control Wednesday and Friday, 10:30am-12:00pm Fall

  17. Partial control of chaotic systems Samuel Zambrano,1

    E-Print Network [OSTI]

    Rey Juan Carlos, Universidad

    Partial control of chaotic systems Samuel Zambrano,1 Miguel A. F. Sanjuán,1 and James A. Yorke2 1 makes all trajectories escape faster. Attempting to avoid those escapes by applying a control smaller that allows one to keep trajectories inside that region with control smaller than noise. We call this type

  18. Behavioral/Systems/Cognitive Visual Feedback Control of Hand Movements

    E-Print Network [OSTI]

    Knill, David C.

    Behavioral/Systems/Cognitive Visual Feedback Control of Hand Movements Jeffrey A. Saunders investigated what visual information contributes to on-line control of hand movements. It has been suggested.Weusedaperturbationmethod to determine the relative contributions of motion and position information to feedback control. Subjects

  19. Elements of Information Theory for Networked Control Systems

    E-Print Network [OSTI]

    Franceschetti, Massimo

    Chapter 1 Elements of Information Theory for Networked Control Systems Massimo Franceschetti. This challenges the standard assumption of classical control theory that communication can be per- formed and control theories and can be written in various forms. These are illustrated in Sect. 1.4, along

  20. Laboratory 10 Control Systems Laboratory ECE3557 Laboratory 10

    E-Print Network [OSTI]

    Laboratory 10 Control Systems Laboratory ECE3557 Laboratory 10 State Feedback Controller for Position Control of a DC Servo 10.1 Objective The objective of this laboratory is to position the gears, we will use the state space model of the DC servo introduced in the laboratory 3 (refer to [1

  1. Design of Controllers for a Multiple Input Multiple Output System 

    E-Print Network [OSTI]

    Harris, Amanda Lynne

    2012-07-16

    A method of controller design for multiple input multiple output (MIMO) system is needed that will not give the high order controllers of modern control theory but will be more systematic than the “ad hoc” method. The objective of this method...

  2. Centralized Stochastic Optimal Control of Complex Systems

    SciTech Connect (OSTI)

    Malikopoulos, Andreas

    2015-01-01

    In this paper we address the problem of online optimization of the supervisory power management control in parallel hybrid electric vehicles (HEVs). We model HEV operation as a controlled Markov chain using the long-run expected average cost per unit time criterion, and we show that the control policy yielding the Pareto optimal solution minimizes the average cost criterion online. The effectiveness of the proposed solution is validated through simulation and compared to the solution derived with dynamic programming using the average cost criterion.

  3. Pool power control in remelting systems

    DOE Patents [OSTI]

    Williamson, Rodney L. (Albuquerque, NM); Melgaard, David K. (Albuquerque, NM); Beaman, Joseph J. (Austin, TX)

    2011-12-13

    An apparatus for and method of controlling a remelting furnace comprising adjusting current supplied to an electrode based upon a predetermined pool power reference value and adjusting the electrode drive speed based upon the predetermined pool power reference value.

  4. A smart control system for electric vehicle batteries

    SciTech Connect (OSTI)

    Arikara, M.P.; Dickinson, B.E.; Branum, B.

    1993-12-31

    A smart control system for electric vehicle (EV) batteries was designed and its performance was evaluated. The hardware for the system was based on the Motorola MC68HC11ENB micro controller. A zinc bromide (Zn/Br{sub 2}) battery was chosen since it is a good candidate as an EV battery and has a large number of user variable parameters that affect its performance. The flexibility of the system arises from the fact that the system can be programmed to do a wide variety of jobs. The use of real time interrupts and other features makes the system safe for use along with the battery systems. Test data indicates that real time control of the different parameters can increase the performance of the battery by 15%. In addition to optimizing the performance of the battery the control system incorporates essential safety features.

  5. Global Optimization in Control System Analysis and Design

    E-Print Network [OSTI]

    Neumaier, Arnold

    Global Optimization in Control System Analysis and Design Venkataramanan Balakrishnan Stephen Boyd. S. A. I. INTRODUCTION Many problems in control system analysis and design can be posed in a setting variations. An example is parametric robustness analysis, where the parameters might represent physical quan

  6. ARCHITECTURE AND MAIN HARDWARE COMPONENTS OF THE FEL CONTROL SYSTEM

    E-Print Network [OSTI]

    Kozak, Victor R.

    ARCHITECTURE AND MAIN HARDWARE COMPONENTS OF THE FEL CONTROL SYSTEM E.N. Dementiev, V.R. Kozak, E general structure and listing the main features and hardware of individual components. Comparative as the reasons for choosing certain standards. Main issues of the future development of the control system

  7. Maximum power tracking control scheme for wind generator systems 

    E-Print Network [OSTI]

    Mena Lopez, Hugo Eduardo

    2009-05-15

    The purpose of this work is to develop a maximum power tracking control strategy for variable speed wind turbine systems. Modern wind turbine control systems are slow, and they depend on the design parameters of the turbine and use wind and/or rotor...

  8. Presentation to the Control Systems Security Outreach Coordination Meeting

    E-Print Network [OSTI]

    23% Oil/Gas 18% Nuclear 17% Chemical 6% Water 6% Manufacturing 2% Transportation/Shipping 2% Natural Gas 1% 0 20 40 60 80 100 120 Low Med High Control Systems Cyber Security Experience Levels #12Presentation to the Control Systems Security Outreach Coordination Meeting Presentation

  9. On Cyber Security for Networked Control Systems Saurabh Amin

    E-Print Network [OSTI]

    random failures and secu- rity attacks. Cyber-security of Supervisory Control and Data Acquisition (SCADA, cyber-security assessment for SCADA systems is performed based on well-defined attacker and defender objectives. The mathematical model of SCADA systems considered in this work has two control levels

  10. Performance Analysis of Manufacturing Systems Under Hybrid Control Policies

    E-Print Network [OSTI]

    Gershwin, Stanley B.

    is widely used in practice, and is seen as the \\state of the art" in lean manufacturing. We present severalPerformance Analysis of Manufacturing Systems Under Hybrid Control Policies by Asbjoern M. Bonvik of Manufacturing Systems Under Hybrid Control Policies by Asbjoern M. Bonvik Submitted to the Department

  11. CONTROL OF SUPPLY TEMPERATURE IN DISTRICT HEATING SYSTEMS

    E-Print Network [OSTI]

    CONTROL OF SUPPLY TEMPERATURE IN DISTRICT HEATING SYSTEMS T.S. Nielsen, H. Madsen Informatics the supply temperature in district heating systems using stochastic modelling, prediction and control at Roskilde Varmeforsyning. The results obtained for the Roskilde district heating utility are evaluated

  12. Deception used for Cyber Defense of Control Systems

    SciTech Connect (OSTI)

    Wayne F. Boyer; Miles A. McQueen

    2009-05-01

    Control system cyber security defense mechanisms may employ deception to make it more difficult for attackers to plan and execute successful attacks. These deceptive defense mechanisms are organized and initially explored according to a specific deception taxonomy and the seven abstract dimensions of security previously proposed as a framework for the cyber security of control systems.

  13. Cyber-Security of Networked Control Systems Karl Henrik Johansson

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    7/3/12 1 Cyber-Security of Networked Control Systems Karl Henrik Johansson #12;7/3/12 2 Recent Cyber-ARacks on Control Systems Cyber-Security of Networked to cyber-threats with many poten@al points of aRacks · How

  14. Control Algorithms for Grid-Scale Battery Energy Storage Systems

    E-Print Network [OSTI]

    and installation of the control algorithms for frequency-regulation and wind-smoothing for a 1-MW gridControl Algorithms for Grid-Scale Battery Energy Storage Systems This report describes development-connected battery energy storage system. The report was submitted by HNEI to the U.S. Department of Energy Office

  15. Control Systems Security Test Center - FY 2004 Program Summary

    SciTech Connect (OSTI)

    Robert E. Polk; Alen M. Snyder

    2005-04-01

    In May 2004, the US-CERT Control Systems Security Center (CSSC) was established at Idaho National Laboratory to execute assessment activities to reduce the vulnerability of the nation’s critical infrastructure control systems to terrorist attack. The CSSC implements a program to accomplish the five goals presented in the US-CERT National Strategy for Control Systems Security. This report summarizes the first year funding of startup activities and program achievements that took place in FY 2004 and early FY 2005. This document was prepared for the US-CERT Control Systems Security Center of the National Cyber Security Division of the Department of Homeland Security (DHS). DHS has been tasked under the Homeland Security Act of 2002 to coordinate the overall national effort to enhance the protection of the national critical infrastructure. Homeland Security Presidential Directive HSPD-7 directs federal departments to identify and prioritize the critical infrastructure and protect it from terrorist attack. The US-CERT National Strategy for Control Systems Security was prepared by the National Cyber Security Division to address the control system security component addressed in the National Strategy to Secure Cyberspace and the National Strategy for the Physical Protection of Critical Infrastructures and Key Assets. The US-CERT National Strategy for Control Systems Security identified five high-level strategic goals for improving cyber security of control systems.

  16. Maximum power tracking control scheme for wind generator systems 

    E-Print Network [OSTI]

    Mena Lopez, Hugo Eduardo

    2008-10-10

    The purpose of this work is to develop a maximum power tracking control strategy for variable speed wind turbine systems. Modern wind turbine control systems are slow, and they depend on the design parameters of the turbine and use wind and/or rotor...

  17. REVISION OF ZELENOGRAD SYNCHROTRON RADIATION FACILITY CONTROL SYSTEM

    E-Print Network [OSTI]

    Kozak, Victor R.

    600 Linac, RF systems, synchronisation 300 Vacuum monitoring 150 Temperature monitoring 450 Ethernet of control of executive devices and modules of monitoring of synchrotron parameters. Table 1: Channels of control and monitoring. Accelerators equipment Number of channel Magnet systems of booster and main ring

  18. CLARKSON UNIVERSITY AERODYNAMIC FLOW CONTROL OF A HIGH LIFT SYSTEM

    E-Print Network [OSTI]

    Bollt, Erik

    CLARKSON UNIVERSITY AERODYNAMIC FLOW CONTROL OF A HIGH LIFT SYSTEM WITH DUAL SYNTHETIC JET ARRAYS Flow Control of a High Lift System with Dual Synthetic Jet Arrays' presented by Robert Bruce Alstrom the performance of the latest generation aircraft by reducing their fuel consumption and improving their high

  19. Managing Uncertainty in Operational Control of Water Distribution Systems

    E-Print Network [OSTI]

    Bargiela, Andrzej

    Managing Uncertainty in Operational Control of Water Distribution Systems A. Bargiela Department Operation of water distribution systems requires a variety of decisions to be made. There are system. There are system management decisions concerning the regulatory measures such as water pricing principles, effluent

  20. Controlled cooling of an electronic system based on projected conditions

    DOE Patents [OSTI]

    David, Milnes P.; Iyengar, Madhusudan K.; Schmidt, Roger R.

    2015-08-18

    Energy efficient control of a cooling system cooling an electronic system is provided based, in part, on projected conditions. The control includes automatically determining an adjusted control setting(s) for an adjustable cooling component(s) of the cooling system. The automatically determining is based, at least in part, on projected power consumed by the electronic system at a future time and projected temperature at the future time of a heat sink to which heat extracted is rejected. The automatically determining operates to reduce power consumption of the cooling system and/or the electronic system while ensuring that at least one targeted temperature associated with the cooling system or the electronic system is within a desired range. The automatically determining may be based, at least in part, on an experimentally obtained model(s) relating the targeted temperature and power consumption of the adjustable cooling component(s) of the cooling system.