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


1

Integrated Inverter For Driving Multiple Electric Machines  

DOE Patents (OSTI)

An electric machine drive (50) has a plurality of inverters (50a, 50b) for controlling respective electric machines (57, 62), which may include a three-phase main traction machine (57) and two-phase accessory machines (62) in a hybrid or electric vehicle. The drive (50) has a common control section (53, 54) for controlling the plurality of inverters (50a, 50b) with only one microelectronic processor (54) for controlling the plurality of inverters (50a, 50b), only one gate driver circuit (53) for controlling conduction of semiconductor switches (S1-S10) in the plurality of inverters (50a, 50b), and also includes a common dc bus (70), a common dc bus filtering capacitor (C1) and a common dc bus voltage sensor (67). The electric machines (57, 62) may be synchronous machines, induction machines, or PM machines and may be operated in a motoring mode or a generating mode.

Su, Gui-Jia [Knoxville, TN; Hsu, John S [Oak Ridge, TN

2006-04-04T23:59:59.000Z

2

Combined Electric Machine and Current Source Inverter Drive System ...  

Wind power generators ; Industrial power generators; More Information John S. Hsu. Combined Electric Machine and Current Source Invertor Drive System, U.S ...

3

Neuro-Fuzzy Controller of a Sensorless PM Motor Drive For Washing Machines  

E-Print Network (OSTI)

algorithms to enable direct drive from permanent magnet (PM) synchronous motors[3]. #12;Among AC drives, the permanent magnet (PM) motors have became popular, due to its high torque to current ration, large powerNeuro-Fuzzy Controller of a Sensorless PM Motor Drive For Washing Machines Kasim M. Al

4

Low backlash direct drive actuator  

DOE Patents (OSTI)

A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw.

Kuklo, Thomas C. (Oakland, CA)

1994-01-01T23:59:59.000Z

5

Quasi-spherical direct drive fusion.  

SciTech Connect

The authors present designs of quasi-spherical direction drive z-pinch loads for machines such as ZR at 28 MA load current with a 150 ns implosion time (QSDDI). A double shell system for ZR has produced a 2D simulated yield of 12 MJ, but the drive for this system on ZR has essentially no margin. A double shell system for a 56 MA driver at 150 ns implosion has produced a simulated yield of 130 MJ with considerable margin in attaining the necessary temperature and density-radius product for ignition. They also represent designs for a magnetically insulated current amplifier, (MICA), that modify the attainable ZR load current to 36 MA with a 28 ns rise time. The faster pulse provided by a MICA makes it possible to drive quasi-spherical single shell implosions (QSDD2). They present results from 1D LASNEX and 2D MACH2 simulations of promising low-adiabat cryogenic QSDD2 capsules and 1D LASNEX results of high-adiabat cryogenic QSDD2 capsules.

VanDevender, J. Pace; Abbott, Lucas M.; Langston, William L.; McDaniel, Dillon Heirman; Nash, Thomas J.; Roderick, Norman Frederick; Silva, M.

2007-01-01T23:59:59.000Z

6

Electromechanical coupling model for cutterhead driving system of shield machines  

Science Conference Proceedings (OSTI)

The synchronization of the cutterhead driving system of shield machines is affected by not only the nonlinearity of mechanical transmission mechanism and the characteristics of driving motors, but also their interaction. In this paper, dynamics of the ... Keywords: cutterhead, electromechanical coupling, synchronization

Jianzhong Sun; Ran Liu; Yaqin Luo; Wei Sun

2010-11-01T23:59:59.000Z

7

Direct Semantics of Extended State Machines  

E-Print Network (OSTI)

In this paper we present semantic profiles for UML 2 state machines, which are based directly upon the structure of a state machine model, without requiring flattening or other transformations on these models. The approach addresses many of the semantic problems identified for state machines, and provides a basis for semantic analysis and proof of behavioural compatibility between state machines. 1

K. Lano; D. Clark

2007-01-01T23:59:59.000Z

8

Direct drive field actuator motors  

DOE Patents (OSTI)

A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

Grahn, A.R.

1998-03-10T23:59:59.000Z

9

PCTS Local Driving Directions Princeton University  

E-Print Network (OSTI)

PCTS Local Driving Directions Princeton University Princeton Center for Theoretical Science Jadwin to Jadwin Hall, there are several parking options. a) There are limited visitors' parking spots directly, in the first aisle, after you turn into the parking lot, which is located on Ivy Lane. (Use the directions

10

Following directions using statistical machine translation  

Science Conference Proceedings (OSTI)

Mobile robots that interact with humans in an intuitive way must be able to follow directions provided by humans in unconstrained natural language. In this work we investigate how statistical machine translation techniques can be used to bridge the gap ... Keywords: human-robot interaction, instruction following, natural language, navigation, statistical machine translation

Cynthia Matuszek; Dieter Fox; Karl Koscher

2010-03-01T23:59:59.000Z

11

In-line drivetrain and four wheel drive work machine using same  

DOE Patents (OSTI)

A four wheel drive articulated mine loader is powered by a fuel cell and propelled by a single electric motor. The drivetrain has the first axle, second axle, and motor arranged in series on the work machine chassis. Torque is carried from the electric motor to the back differential via a pinion meshed with the ring gear of the back differential. A second pinion oriented in an opposite direction away from the ring gear is coupled to a drive shaft to transfer torque from the ring gear to the differential of the front axle. Thus, the ring gear of the back differential acts both to receive torque from the motor and to transfer torque to the forward axle. The in-line drive configuration includes a single electric motor and a single reduction gear to power the four wheel drive mine loader.

Hoff, Brian (East Peoria, IL)

2008-08-05T23:59:59.000Z

12

The APS direct-drive pulsed septum magnets  

Science Conference Proceedings (OSTI)

The Advanced Photon Source (APS) consists of four separate machines: linac, booster, positron accumulator ring (PAR) and storage ring (SR), plus three transfer lines interconnecting the machines. At least one thin, pulsed septum magnet is located at each splice joint. The stray field tolerances for two of these septum magnets are very stringent. As an example, for clean operation during the proposed top-up mode in the storage ring, the stray fields from the septum magnet must not exceed 1 G-m. The septum wall thickness must also not exceed 2.4 mm. To meet these requirements, direct-drive septum magnets with magnetic shield pipe around the stored beam region were developed and built. These magnets have now been tested and installed, and are used in daily operation. We describe the magnet(s) design, the measurement results, the actual operation, and performance.

Sheynin, S.; Lopez, F.; Milton, S.V.

1995-07-01T23:59:59.000Z

13

High efficiency compressor uses direct drive  

Science Conference Proceedings (OSTI)

This article focuses on the high efficiency of a compressor which uses only direct drive. This compressor was evaluated by judges and won Top Honors in the 1982 Chemical Processing magazine Vaaler Awards category of compressors, blowers and fans. Applications for the compressor include combustion air, process air and gas booster, incineration, fermentation, and vacuum filtration systems. In addition to a 50% reduction in power comsumption, the use of the compressor eliminated the need for a water seal, thus saving 200 gpm of water. And, since the elimination of the water seal reduced the necessary downtime for seal maintenance, on stream time was increased by 5%.

Not Available

1982-11-01T23:59:59.000Z

14

DIRECT-DRIVE AND EDDY-CURRENT SEPTUM MAGNETS  

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

laminations and leakage fields are summarized in Appendices A and B, respectively. 2. Direct-Drive Septum For the upper half of the 2-D direct-drive septum magnet in Fig. 1 the...

15

Direct Drive Systems DDS | Open Energy Information  

Open Energy Info (EERE)

Systems DDS Systems DDS Jump to: navigation, search Name Direct Drive Systems (DDS) Place Cerritos, California Zip CA 90703 Product Manufactures high speed, permanent magnet (PM), high-power motors, generators and power electronics. Coordinates 33.868545°, -118.063704° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.868545,"lon":-118.063704,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

16

Improving the Efficiency of Die Casting Machine Hydraulic Systems with the Retrofit of Adjustable Frequency Drives  

E-Print Network (OSTI)

Die casting is a common method of light metal processing which is used to produce accurately dimensioned, sharply defined metal parts. Most die casting machines in use today utilize a complex hydraulic system to perform the necessary work required for the process. The pressure and flow rate demands on the hydraulic system vary significantly throughout the cycle. Many older systems are greatly oversized so that they are able to meet the peak hydraulic demand at any point. These systems operate inefficiently because there is typically no way to limit the hydraulic capacity during periods of low demand. As a result, fluid is throttled to lower pressures and excess fluid flow is routed directly back to the system reservoir, wasting motor energy and increasing the thermal load on the cooling system. One option for improving the efficiency of older die casting machines currently in use is the retrofit of an adjustable frequency drive, or AFD. An AFD allows the speed of the pump motor to be varied, changing the pump output to suit the cycle demands. This minimizes the amount of wasted energy without affecting other process parameters. This paper will discuss the die casting process and examine the energy savings potential of retrofitting die casting machines with adjustable frequency drives.

Ambs, L.; Kosanovic, D.; Edberg, C.

1999-05-01T23:59:59.000Z

17

Electricity use by machine drives varies significantly by ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. ... Fossil fuels may be used to drive turbines, reciprocating engines, ...

18

Electric vehicle drive train with direct coupling transmission ...  

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode ...

19

Combined Electric Machine and Current Source Inverter Drive System  

This integration of these two ORNL ... elimination of several components reduces drive system cost, weight, and volume. ... Energy and Transportation Science Division

20

Combination spindle-drive system for high precision machining  

DOE Patents (OSTI)

A combination spindle-drive is provided for fabrication of optical quality surface finishes. Both the spindle-and-drive utilize the spindle bearings for support, thereby removing the conventional drive-means bearings as a source of vibration. An airbearing spindle is modified to carry at the drive end a highly conductive cup-shaped rotor which is aligned with a stationary stator to produce torque in the cup-shaped rotor through the reaction of eddy currents induced in the rotor. This arrangement eliminates magnetic attraction forces and all force is in the form of torque on the cup-shaped rotor.

Gerth, Howard L. (Knoxville, TN)

1977-07-26T23:59:59.000Z

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


21

Direct drive wind turbine - Energy Innovation Portal  

A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The ...

22

DRIVING DIRECTIONS South Carolina Commissioner's School for Agriculture  

E-Print Network (OSTI)

Page 6 DRIVING DIRECTIONS South Carolina Commissioner's School for Agriculture Directions://www.clemson.edu/campusmap/index.html Directions from Interstate 85 Take exit 19B, Clemson University (Hwy 76/28). Merge onto Hwy 76/28 and follow sign, go to the right. Follow the signs to the registration area in Barnett Hall. Directions to Friday

Bolding, M. Chad

23

EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop  

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

Electric Drive (Power Electric Drive (Power Electronics and Electric Machines) Workshop Tuesday, July 24, 2012 - Doubletree O'Hare, Chicago, IL Event Objective: DOE aims to obtain stakeholder input on the Power Electronics and Electric Machines (PEEM) goals of the EV Everywhere Grand Challenge. This input will advise the aggressive next-generation technology research and development necessary to enable U.S. companies to be the first in the world to produce plug-in electric vehicles (PEVs) that are as affordable and convenient for the average American family as today's gasoline-powered vehicles within the next 10 years. The EV Everywhere Grand Challenge Electric Drive (Power Electronics and Electric Machines) Workshop was attended by senior officials of the Department of Energy and representatives from the following

24

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

National Laboratory. Inertial Fusion Energy: How IFE Works,Tracking of Direct Drive Inertial Fusion Targets."Fusion Science and Technology 52.3 (2007): 435-439. Tillack,

Spalding, Jon David

2009-01-01T23:59:59.000Z

25

Low backlash direct drive actuator - Energy Innovation Portal  

A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly ...

26

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

direct drive inertial fusion reactor (Sethian). HAPLsblock from the fusion reactor chamber. 4.3 Demonstration A.fusion reaction for generating electricity (see figure 1.1). In order for such a nuclear reactor

Spalding, Jon David

2009-01-01T23:59:59.000Z

27

Comparative Assessment of Direct Drive High Temperature Superconductin...  

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

Energy, LLC. Contract No. DE-AC36-08GO28308 Comparative Assessment of Direct Drive High Temperature Superconducting Generators in Multi-Megawatt Class Wind Turbines B....

28

MHK Technologies/Direct Drive Power Generation Buoy | Open Energy  

Open Energy Info (EERE)

Power Generation Buoy Power Generation Buoy < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Direct Drive Power Generation Buoy.jpg Technology Profile Primary Organization Columbia Power Technologies Inc Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Direct drive point absorber In 2005 Oregon State University entered into an exclusive license agreement with Columbia Power Technologies to jointly develop a direct drive wave energy conversion device Designed to be anchored 2 5 miles off the Oregon coast in 130 feet of water it uses the rise and fall of ocean waves to generate electricity Mooring Configuration Anchored

29

Development of a Direct Drive Permanent Magnet Generator for Small Wind Turbines  

SciTech Connect

In this program, TIAX performed the conceptual design and analysis of an innovative, modular, direct-drive permanent magnet generator (PMG) for use in small wind turbines that range in power rating from 25 kW to 100 kW. TIAX adapted an approach that has been successfully demonstrated in high volume consumer products such as direct-drive washing machines and portable generators. An electromagnetic model was created and the modular PMG design was compared to an illustrative non-modular design. The resulting projections show that the modular design can achieve significant reductions in size, weight, and manufacturing cost without compromising efficiency. Reducing generator size and weight can also lower the size and weight of other wind turbine components and hence their manufacturing cost.

Chertok, Allan; Hablanian, David; McTaggart, Paul; DOE Project Officer - Keith Bennett

2004-11-16T23:59:59.000Z

30

Comparative Assessment of Direct Drive High Temperature Superconducting Generators in Multi-Megawatt Class Wind Turbines  

DOE Green Energy (OSTI)

This paper summarizes the work completed under the CRADA between NREL and American Superconductor (AMSC). The CRADA combined NREL and AMSC resources to benchmark high temperature superconducting direct drive (HTSDD) generator technology by integrating the technologies into a conceptual wind turbine design, and comparing the design to geared drive and permanent magnet direct drive (PMDD) wind turbine configurations. Analysis was accomplished by upgrading the NREL Wind Turbine Design Cost and Scaling Model to represent geared and PMDD turbines at machine ratings up to 10 MW and then comparing cost and mass figures of AMSC's HTSDD wind turbine designs to theoretical geared and PMDD turbine designs at 3.1, 6, and 10 MW sizes. Based on the cost and performance data supplied by AMSC, HTSDD technology has good potential to compete successfully as an alternative technology to PMDD and geared technology turbines in the multi megawatt classes. In addition, data suggests the economics of HTSDD turbines improve with increasing size, although several uncertainties remain for all machines in the 6 to 10 MW class.

Maples, B.; Hand, M.; Musial, W.

2010-10-01T23:59:59.000Z

31

Comparative Assessment of Direct Drive High Temperature Superconducting Generators in Multi-Megawatt Class Wind Turbines  

SciTech Connect

This paper summarizes the work completed under the CRADA between NREL and American Superconductor (AMSC). The CRADA combined NREL and AMSC resources to benchmark high temperature superconducting direct drive (HTSDD) generator technology by integrating the technologies into a conceptual wind turbine design, and comparing the design to geared drive and permanent magnet direct drive (PMDD) wind turbine configurations. Analysis was accomplished by upgrading the NREL Wind Turbine Design Cost and Scaling Model to represent geared and PMDD turbines at machine ratings up to 10 MW and then comparing cost and mass figures of AMSC's HTSDD wind turbine designs to theoretical geared and PMDD turbine designs at 3.1, 6, and 10 MW sizes. Based on the cost and performance data supplied by AMSC, HTSDD technology has good potential to compete successfully as an alternative technology to PMDD and geared technology turbines in the multi megawatt classes. In addition, data suggests the economics of HTSDD turbines improve with increasing size, although several uncertainties remain for all machines in the 6 to 10 MW class.

Maples, B.; Hand, M.; Musial, W.

2010-10-01T23:59:59.000Z

32

Direct control of air gap flux in permanent magnet machines  

DOE Patents (OSTI)

A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Hsu, John S. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

33

EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda  

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

- 7/20/2012 - 7/20/2012 EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Tuesday, July 24, 2012 - Doubletree O'Hare, Chicago, IL Event Objective: DOE aims to obtain stakeholder input on the Power Electronics and Electric Machines (PEEM) goals of the EV Everywhere Grand Challenge. This input will advise the aggressive next- generation technology research and development necessary to enable U.S. companies to be the first in the world to produce plug-in electric vehicles (PEVs) that are as affordable and convenient for the average American family as today's gasoline-powered vehicles within the next 10 years. 8:30-8:35 AM CONTINENTAL BREAKFAST 8:30-8:35 AM CALL TO ORDER Mr. Patrick Davis, DOE EERE Vehicle Technologies Program

34

Electric vehicle drive train with direct coupling transmission  

DOE Patents (OSTI)

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

Tankersley, Jerome B. (Fredericksburg, VA); Boothe, Richard W. (Roanoke, VA); Konrad, Charles E. (Roanoke, VA)

1995-01-01T23:59:59.000Z

35

Electric vehicle drive train with direct coupling transmission  

DOE Patents (OSTI)

An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox. 6 figures.

Tankersley, J.B.; Boothe, R.W.; Konrad, C.E.

1995-04-04T23:59:59.000Z

36

Power Electronics and Electric Machines  

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

PEEM Activities Application Power Electronics Electric Machines Traction Drive System Inverter & Boost Converter (if needed) MotorGenerator Vehicle Power Management Bi-directional...

37

10MW Class Direct Drive HTS Wind Turbine: Cooperative Research and Development Final Report, CRADA Number CRD-08-00312  

DOE Green Energy (OSTI)

This paper summarizes the work completed under the CRADA between NREL and American Superconductor (AMSC). The CRADA combined NREL and AMSC resources to benchmark high temperature superconducting direct drive (HTSDD) generator technology by integrating the technologies into a conceptual wind turbine design, and comparing the design to geared drive and permanent magnet direct drive (PMDD) wind turbine configurations. Analysis was accomplished by upgrading the NREL Wind Turbine Design Cost and Scaling Model to represent geared and PMDD turbines at machine ratings up to 10 MW and then comparing cost and mass figures of AMSC's HTSDD wind turbine designs to theoretical geared and PMDD turbine designs at 3.1, 6, and 10 MW sizes.

Musial, W.

2011-05-01T23:59:59.000Z

38

10MW Class Direct Drive HTS Wind Turbine: Cooperative Research and Development Final Report, CRADA Number CRD-08-00312  

SciTech Connect

This paper summarizes the work completed under the CRADA between NREL and American Superconductor (AMSC). The CRADA combined NREL and AMSC resources to benchmark high temperature superconducting direct drive (HTSDD) generator technology by integrating the technologies into a conceptual wind turbine design, and comparing the design to geared drive and permanent magnet direct drive (PMDD) wind turbine configurations. Analysis was accomplished by upgrading the NREL Wind Turbine Design Cost and Scaling Model to represent geared and PMDD turbines at machine ratings up to 10 MW and then comparing cost and mass figures of AMSC's HTSDD wind turbine designs to theoretical geared and PMDD turbine designs at 3.1, 6, and 10 MW sizes.

Musial, W.

2011-05-01T23:59:59.000Z

39

Laboratory Directed Research and Development Final Report Intelligent Tools for On-Machine Acceptance of Precision Machined Components  

E-Print Network (OSTI)

On-Machine Acceptance (OMA) is an agile manufacturing concept being developed for machine tools at SNL. The concept behind OMA is the integration of product design, fabrication, and qualification processes by using the machining center as a fabrication and inspection tool. This report documents the final results of a Laboratory Directed Research and Development effort to qualify OMA. Intelligent Tools for On-Machine Acceptance of Precision Machined Components 2 Acknowledgments Thanks to Don Sheaffer, Department 8120, Mark Powell, Department 9611, and Marcey Abate, Department 12323, for their contributions to this final report. Thanks to Tony Bryce, and Dennis Clingan, Department 1484, Phil Skogmo, Department 2645, and Charles Steinhaus, Department 8240, for their assistance in writing this report. Intelligent Tools for On-Machine Acceptance of Precision Machined Components 3 Contents 1.0 Introduction .................................................................................

Naomi Christensen Precision; Naomi G. Christensen; Lane D. Harwell; Andrew Hazelton

1996-01-01T23:59:59.000Z

40

Crossed-beam energy transfer in direct-drive implosions  

SciTech Connect

Direct-drive-implosion experiments on the OMEGA laser [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] have showed discrepancies between simulations of the scattered (non-absorbed) light levels and measured ones that indicate the presence of a mechanism that reduces laser coupling efficiency by 10%-20%. This appears to be due to crossed-beam energy transfer (CBET) that involves electromagnetic-seeded, low-gain stimulated Brillouin scattering. CBET scatters energy from the central portion of the incoming light beam to outgoing light, reducing the laser absorption and hydrodynamic efficiency of implosions. One-dimensional hydrodynamic simulations including CBET show good agreement with all observables in implosion experiments on OMEGA. Three strategies to mitigate CBET and improve laser coupling are considered: the use of narrow beams, multicolor lasers, and higher-Z ablators. Experiments on OMEGA using narrow beams have demonstrated improvements in implosion performance.

Seka, W; Edgell, D H; Michel, D T; Froula, D H; Goncharov, V N; Craxton, R S; Divol, L; Epstein, R; Follett, R; Kelly, J H; Kosc, T Z; Maximov, A V; McCrory, R L; Meyerhofer, D D; Michel, P; Myatt, J F; Sangster, T C; Shvydky, A; Skupsky, S

2012-05-22T23:59:59.000Z

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


41

Direct-Drive Inertial Confinement Fusion Research at the Laboratory for Laser Energetics  

E-Print Network (OSTI)

beams Relative size 240 ft National Ignition Facility (NIF) 1.8 MJ 192 beams NIF The National Ignition (NIF) is predicted to achieve high-gain (~40). · Direct drive targets are predicted to ignite on the NIF while it is in x-ray-drive configuration with polar direct drive (PDD). · Fully integrated fast

42

Direct drive field actuator motors - Energy Innovation Portal  

A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field ...

43

OMEGA ICF experiments and preparation for direct drive ignition on NIF  

E-Print Network (OSTI)

OMEGA ICF experiments and preparation for direct drive ignition on NIF R.L. McCrorya , R.E. Bahra) is investigating various theoretical aspects of a direct drive National Ignition Facility (NIF) ignition target equivalent to those planned for the NIF. The current experimental studies on OMEGA address the essential

44

2010 Google -Map data 2010 Google, Sanborn -Driving directions to St Peter Claver School  

E-Print Network (OSTI)

©2010 Google - Map data ©2010 Google, Sanborn - Driving directions to St Peter Claver School (504.google.com/maps?client=firefox-a&rls=org.mozilla:e... 1 of 2 9/2/10 10:45 AM #12;Hide Driving directions ©2010 Google Report a problem St Peter Claver School 1020 North Prieur Street New Orleans, LA 70116

45

Progress in Direct-Drive Inertial Confinement Fusion Research  

E-Print Network (OSTI)

Temperature Radius Massdensity Hot spot Burn wave Ablator DT ice #12;A-beam smoothing is critical to ICF ignition I1771 EO phase modulator Grating Amplifiers Grating Focusing optics Angular dispersion f Oscillator Phase Plates1 Measured far field of an OMEGA indirect-drive phase plate

46

Machining  

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

laboratory equipment. Machinery includes live spindle tooling lathes, CNC lathes, CNC milling machines, wire-cut EDMs, a high-speed machining center and a CNC four-axis EDM...

47

EV3 : Traction drives and generators A: Electric machine design and optimization 1  

E-Print Network (OSTI)

of Rotor Structure and Number of Phases on First and Second Order Characteristics of TOYOTA PRIUS torque, torque-speed characteristics. I. STUDIED PRIUS MACHINE A. The average torque Taverage (first of PRIUS machine. A methodology consists of coupling between an optimization program of Matlab and the FEM

Paris-Sud XI, Université de

48

Wind turbine having a direct-drive drivetrain - Energy Innovation ...  

A wind turbine comprising an electrical generator that includes a rotor assembly. A wind rotor that includes a wind rotor hub is directly coupled to the rotor ...

49

Optimization of direct drive induction motors for electric ship propulsion with high speed propellers  

Science Conference Proceedings (OSTI)

Direct drive electric ship propulsion can offer increased flexibility and reduced overall fuel consumption compared to geared mechanical systems [Davis 1987, Doerry 2007]. As a well-established technology, induction motors are a dependable and economical ... Keywords: AC motors, induction motor drives, induction motors, thermal analysis

S. C. Englebretson; J. L. Kirtley, Jr; C. Chryssostomidis

2009-07-01T23:59:59.000Z

50

Modern automatic system for the optimization of the electrical drives for working machines with mechanical branches  

Science Conference Proceedings (OSTI)

After a consequent adjustable electric drives experience, once with establish of the analysis desiderata's, during of prepares and experimentations time, there are selected some few problems who underlie this work definition. This paper brings some contributions ... Keywords: electric drive system, flux bearing, frequency converter, speed adjustment of a high power asynchronous motor, system for adjustment speed to asynchronous motor

Mihail-Florin Stan; Marcel Ionel; Octavian-Marcel Ionel

2006-10-01T23:59:59.000Z

51

Design and optimization strategies for muscle-like direct-drive linear permanent-magnet motors  

Science Conference Proceedings (OSTI)

We report a new approach to the design of direct-drive linear permanent-magnet motors for use in general-purpose robotic actuation, with particular attention to applications in bird-scale flapping-wing robots. We show a simple, quantitative analytical ... Keywords: Actuator design, electric motors, muscle

Bryan P Ruddy; Ian W Hunter

2011-06-01T23:59:59.000Z

52

2010 Google -Map data 2010 Google -Driving directions to 1850 Table Mesa Dr, Boulder, CO 80305  

E-Print Network (OSTI)

©2010 Google - Map data ©2010 Google - Driving directions to 1850 Table Mesa Dr, Boulder, CO 80305 obey all signs or notices regarding your route. Map data ©2010 Google Report a problem Print Send Link, CO 80305 to 1850 Table Mesa... http://maps.google.com/maps?f=d&source=s_d&saddr=32... 1 of 1 9

53

2010 Google -Map data 2010 Google, Sanborn -Driving directions to Tureaud Elementary School  

E-Print Network (OSTI)

©2010 Google - Map data ©2010 Google, Sanborn - Driving directions to Tureaud Elementary School St, New Orleans, LA 70112 to Tureaud Elementary ... http://maps.google data ©2010 Google Report a problem Tureaud Elementary School 2021 Pauger Street New Orleans, LA 70116

54

Direct drive heavy-ion-beam inertial fusion at high coupling efficiency  

SciTech Connect

Issues with coupling efficiency, beam illumination symmetry, and Rayleigh-Taylor instability are discussed for spherical heavy-ion-beam-driven targets with and without hohlraums. Efficient coupling of heavy-ion beams to compress direct-drive inertial fusion targets without hohlraums is found to require ion range increasing several-fold during the drive pulse. One-dimensional implosion calculations using the LASNEX inertial confinement fusion target physics code shows the ion range increasing fourfold during the drive pulse to keep ion energy deposition following closely behind the imploding ablation front, resulting in high coupling efficiencies (shell kinetic energy/incident beam energy of 16% to 18%). Ways to increase beam ion range while mitigating Rayleigh-Taylor instabilities are discussed for future work.

Logan, B.G.; Perkins, L.J.; Barnard, J.J.

2008-05-16T23:59:59.000Z

55

MHK Projects/OSU Direct Drive Power Generation Buoys | Open Energy  

Open Energy Info (EERE)

OSU Direct Drive Power Generation Buoys OSU Direct Drive Power Generation Buoys < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.6472,"lon":-124.127,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

56

Some preliminary results from the NWTC direct-drive, variable-speed test bed  

SciTech Connect

With the remarkable rise in interest in variable-speed operation of larger wind turbines, it has become important for the National Wind Technology Center (NWTC) to have access to a variable-speed test bed that can be specially instrumented for research. Accordingly, a three-bladed, 10-meter, downwind, Grumman Windstream machine has been equipped with a set of composite blades and a direct-coupled, permanent-magnet, 20 kilowatt generator. This machine and its associated control system and data collection system are discussed. Several variations of a maximum power control algorithm have been installed on the control computer. To provide a baseline for comparison, several constant speed algorithms have also been installed. The present major effort is devoted to daytime, semi-autonomous data collection.

Carlin, P.W.; Fingersh, L.J.

1996-10-01T23:59:59.000Z

57

Performance evaluation of a permanent magnet brushless DC linear drive for high-speed machining using finite element analysis  

Science Conference Proceedings (OSTI)

Keywords: FEA, coupled magneto-thermal, electric field, electromagnetic, linear motor drives, magnetic field, static

George Abdou; William Tereshkovich

2000-05-01T23:59:59.000Z

58

Direct-Drive Inertial Fusion Research at the University of Rochester's Laboratory for Laser Energetics: A Review  

SciTech Connect

This paper reviews the status of direct-drive inertial confinement fusion (ICF) research at the University of Rochester's Laboratory for Laser Energetics (LLE). LLE's goal is to demonstrate direct-drive ignition on the National Ignition Facility (NIF) by 2014. Baseline "all-DT" NIF direct-drive ignition target designs have been developed that have a predicted gain of 45 (1-D) at a NIF drive energy of ~1.6 MJ. Significantly higher gains are calculated for targets that include a DT-wicked foam ablator. This paper also reviews the results of both warm fuel and initial cryogenic-fuel spherical target implosion experiments carried out on the OMEGA UV laser. The results of these experiments and design calculations increase confidence that the NIF direct-drive ICF ignition goal will be achieved.

McCrory, R.L.; Meyerhofer, D.D.; Loucks, S.J.; Skupsky, S.; Bahr, R.E.; Betti, R.; Boehly, T.R.; Craxton, R.S.; Collins, T.J.B.; Delettrez, J.A.; Donaldson, W.R.; Epstein, R.; Fletcher, K.A.; Freeman, C.; Frenje, J.A.; Glebov, V.Yu.; Goncharov, V.N.; Harding, D.R.; Jaanimagi, P.A.; Keck, R.L.; Kelly, J.H.; Kessler, T.J.; Kilkenny, J.D.; Knauer, J.P.; Li, C.K.; Lund, L.D.; Marozas, J.A.; McKenty, P.W.; Marshall, F.J.; Morse, S.F.B.; Padalino, S.; Petrasso, R.D.; Radha, P.B.; Regan, S.P.; Roberts, S.; Sangster, T.C.; Seguin, F.H.; Seka, W.; Smalyuk, V.A.; Soures, J.M.; Stoeckl, C.; Thorp, K.A.; Yaakobi, B.; Zuegel, J.D.

2010-04-16T23:59:59.000Z

59

Non-linear analysis of advanced high-phase number induction machines for adjustable speed drive applications  

E-Print Network (OSTI)

This study focuses on the effect of high order phases on electrical machines' parameters and performance. A general approach has been conducted using the induction motor equivalent circuit, winding function and conventional design methods. This approach was supported with finite element analysis. The study shows that high order phase machines have higher peak torque than the equivalent three phase machines. This is attributed to the lower leakage inductance that decreases as the number of phases increases. However, the peak slip frequency increases causing an increase in the skin effect and losses of the rotor. Some design suggestions are proposed to resolve this issue. The conducted harmonic analysis shows that high order harmonics (3rd, 5th, ..) that generate pulsating torque in the three phase machine can be used in high order phase machines to generate torque. For this purpose, a multiphase coordinate transformation and a revised dq model of the five phase induction motor under the fundamental and third harm,monic currents are established in a newly defined d?q?d?q?n reference frame. An extensive analysis using the finite element package has been conducted to compare the performance of different machines when supplied with quasi-rectangular currents with concentrated windings. From torque per ampere point of view, five-phase machine shows an outstanding performance compared with other machines. Futhermore, additional analysis has been conducted for the five-phase and three-phase machines when supplied with sinusoidal voltage source. Experiments have been performed on a 7.5hp five-phase induction motor using TMS320C32 DSP to systematically test and compare stator tooth flux densities and torques in the presence and absence of third harmonic currents. The results obtained are consistent with theoretical studies and simulation analysis, which further demonstrate the feasibility and practical significance of the high-order phase machines.

Qahtany, Nasser H.

2002-01-01T23:59:59.000Z

60

Ancillary Frequency Control of Direct Drive Full-Scale Converter Based Wind Power Plants  

E-Print Network (OSTI)

of doubly fed induction machine (DFIG) and PMSG based wind turbines have been proposed [7-10]. In this paper

Hu, Weihao

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


61

Converting a commercial electric direct-drive robot to operate from joint torque commands  

SciTech Connect

Many robot control algorithms for high performance in-contact operations including hybrid force/position, stiffness control and impedance control approaches require the command the joint torques. However, most commercially available robots do not provide joint torque command capabilities. The joint command at the user level is typically position or velocity and at the control developer level is voltage, current, or pulse-width, and the torque generated is a nonlinear function of the command and joint position. To enable the application of high performance in-contact control algorithms to commercially available robots, and thereby facilitate technology transfer from the robot control research community to commercial applications, an methodology has been developed to linearize the torque characteristics of electric motor-amplifier combinations. A four degree of freedom Adept 2 robot, having pulse-width modulation amplifiers and both variable reluctance and brushless DC motors, is converted to operate from joint torque commands to demonstrate the methodology. The commercial robot controller is replaced by a VME-based system incorporating special purpose hardware and firmware programmed from experimental data. The performance improvement is experimentally measured and graphically displayed using three-dimensional plots of torque vs command vs position. The average percentage torque deviation over the command and position ranges is reduced from as much as 76% to below 5% for the direct-drive joints 1, 2 and 4 and is cut by one half in the remaining ball-screw driven joint 3. Further, the torque deviation of the direct-drive joints drops below 2.5% if only the upper 90% of the torque range is considered. 23 refs., 20 figs., 2 tabs.

Muir, P.F.

1991-07-01T23:59:59.000Z

62

Measured Savings of DC to AC Drive Retrofit in Plastic Extrusion  

E-Print Network (OSTI)

This paper presents the potential electrical energy efficiency improvements for utilizing alternating current (AC) motors controlled by variable frequency drives (VFD) in place of direct current (DC) motors to drive plastic extrusion machines. A brief background on the extrusion process is presented along with typical extrusion machine electrical drive performance requirements. Motor performance characteristics and control strategies are described for both AC and DC machines. A case study is presented, where detailed electrical measurements were performed on two similar extrusion machines driven by a DC motor and an AC motor respectively. Electrical energy, demand, and cost savings are analyzed

Sfeir, R. A.

2008-01-01T23:59:59.000Z

63

Digital signal processing control of induction machine`s torque and stator flux utilizing the direct stator flux field orientation method  

SciTech Connect

This paper presents a review of the Direct Stator Flux Field Orientation control method. This method can be used to control an induction motor`s torque and flux directly and is the application of interest for this thesis. This control method is implemented without the traditional feedback loops and associated hardware. Predictions are made, by mathematical calculations, of the stator voltage vector. The voltage vector is determined twice a switching period. The switching period is fixed throughout the analysis. The three phase inverter duty cycle necessary to control the torque and flux of the induction machine is determined by the voltage space vector Pulse Width Modulation (PWM) technique. Transient performance of either the flux or torque requires an alternate modulation scheme which is also addressed in this thesis. A block diagram of this closed loop system is provided. 22 figs., 7 tabs.

Seiz, J.B.

1997-04-01T23:59:59.000Z

64

High-level directives to drive the allocation of parallel object-oriented applications  

Science Conference Proceedings (OSTI)

The paper presents the Abstract Configuration Language (ACL) implemented within the Parallel Objects object oriented parallel programming environment. ACL defines a set of directives that allow users to specify the allocation needs of his/her application ... Keywords: ACL, ACL directives, Abstract Configuration Language, Parallel Objects object oriented parallel programming environment, allocation decisions, allocation needs, application components, high level directives, parallel languages, parallel object oriented application allocation, run time support, testbed application

A. Corradi; L. Leenardi; F. Zambonelli

1997-04-01T23:59:59.000Z

65

A new multi-motor drive system based on two-stage direct power converter.  

E-Print Network (OSTI)

??The two-stage AC to AC direct power converter is an alternative matrix converter topology, which offers the benefits of sinusoidal input currents and output voltages, (more)

Kumar, Dinesh

2011-01-01T23:59:59.000Z

66

Damage measurements on the NWTC direct-drive, variable-speed test bed  

SciTech Connect

The NWTC (National Wind Technology Center) Variable-Speed Test Bed turbine is a three-bladed, 10-meter, downwind machine that can be run in either fixed-speed or variable-speed mode. In the variable-speed mode, the generator torque is regulated, using a discrete-stepped load bank to maximize the turbine`s power coefficient. At rated power, a second control loop that uses blade pitch to maintain rotor speed essentially as before, i.e., using the load bank to maintain either generator power or (optionally) generator torque. In this paper, the authors will use this turbine to study the effect of variable-speed operation on blade damage. Using time-series data obtained from blade flap and edge strain gauges, the load spectrum for the turbine is developed using rainflow counting techniques. Miner`s rule is then used to determine the damage rates for variable-speed and fixed-speed operation. The results illustrate that the controller algorithm used with this turbine introduces relatively large load cycles into the blade that significantly reduce its service lifetime, while power production is only marginally increased.

Sutherland, H.J. [Sandia National Lab., Albuquerque, NM (United States); Carlin, P.W. [National Renewable Energy Lab., Golden, CO (United States)

1998-12-31T23:59:59.000Z

67

Current drive, anticurrent drive, and balanced injection  

SciTech Connect

In lower hybrid (LH) discharges, the number of suprathermal electrons is limited by the upper bound on the current density from the q = 1 condition, which is caused by the onset of the m = 1 MHD instability. The stored energy of suprathermal electrons, measured in terms of a poloidal beta, scales with plasma current as I/sub p//sup -1/. Potentially, these bounds represent very restrictive conditions for heating in larger machines. Consequently, it seems necessary to perform experiments where the electrons are driven in both directions, parallel and antiparallel to the magnetic field, i.e., bidirectional scenarios like anticurrent drive or balanced injection. Data from PLT relevant to these ideas are discussed. 6 refs., 4 figs.

von Goeler, S.; Stevens, J.; Beiersdorfer, P.; Bell, R.; Bernabei, S.; Bitter, M.; Cavallo, A.; Chu, T.K.; Fishman, H.; Hill, K.

1987-08-01T23:59:59.000Z

68

Utilizing cable winding and industrial robots to facilitate the manufacturing of electric machines  

Science Conference Proceedings (OSTI)

Cable wound electric machines are used mainly for high voltage and direct-drive applications. They can be found in areas such as wind power, hydropower, wave power and high-voltage motors. Compared to conventional winding techniques, cable winding includes ... Keywords: Automated production, Electric machine assembly, Industrial robot, Powerformer, Stator winding, Wave energy converter

Erik Hultman; Mats Leijon

2013-02-01T23:59:59.000Z

69

Experimental Approach of a High Performance Control of Two PermanentMagnet Synchronous Machines in an Integrated Drive for Automotive Applications  

SciTech Connect

The close-loop digital signal processor (DSP) control of an integrated-dual inverter, which is able to drive two permanent magnet (PM) motors independently, is presented and evaluated experimentally. By utilizing the neutral point of the main traction motor, only two inverter poles are needed for the two-phase auxiliary motor. The modified field-oriented control scheme for this integrated inverter was introduced and employed in real-time control. The experimental results show the inverter is able to control two drives independently. An integrated, component count reduced drive is achieved.

Tang, Lixin [ORNL; Su, Gui-Jia [ORNL

2006-01-01T23:59:59.000Z

70

An initial assessment of three-dimensional polar direct drive capsule asymmetries for implosions at the National Ignition Facility  

Science Conference Proceedings (OSTI)

The National Ignition Facility (NIF) provides a unique opportunity to study implosion physics with nuclear yield. The use of polar direct drive (PDD) [A. M. Cok, R. S. Craxton, and P. W. McKenty, Phys. Plasmas 15, 082705 (2008)] provides a simple platform for the experimental studies without expensive optics upgrades to NIF. To determine the optimum PDD laser pointing geometry on NIF and provide a baseline for validating inertial confinement fusion codes against experiments for symmetric and asymmetric implosions, computer simulations using the 3D radiation-hydrodynamics code hydra[M. M. Marinak, R. E. Tipton, O. L. Landen, T. J. Murphy, P. Amendt, S. W. Haan, S. P. Hatchett, C. J. Keane, R. McEachern, and R. Wallace, Phys. Plasmas 3, 2070 (1996)] were preformed. The upper hemisphere of a DT-filled CH capsule was imploded by 96 NIF beams in a PDD configuration. Asymmetries in both polar and equatorial directions around the capsule were observed, with the former dominating the latter. Analysis of the simulation results indicates that the lack of symmetry in the initial power density profile (during the first 200 ps of the implosion) is a primary cause of late-time asymmetry in the implosion as well as decreased yield. By adjusting the laser pointings, the symmetry and total neutron yield were improved. Simulations with dropped quads (four of the NIF laser system's 192 beamlines) without repointing worsen the overall symmetry by a factor of 10 (with respect to rms radial variation around the capsule) and reduce neutron yield by a factor of 2. Both of these degraded implosion characteristics are restored by azimuthal repointing of the remaining quads.

Krasheninnikova, Natalia S.; Finnegan, Sean M.; Schmitt, Mark J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2012-01-15T23:59:59.000Z

71

High-Performance Control of Two Three-Phase Permanent-Magnet Synchronous Machines in an Integrated Drive for Automotive Applications  

SciTech Connect

The closed-loop control of an integrated dual AC drive system is presented to control two three-phase permanent-magnet motors. A five-leg inverter is employed in the drive system; three of the inverter legs are for a main traction motor, but only two are needed for a three-phase auxiliary motor by utilizing the neutral point of the traction motor. An integrated drive with reduced component count is therefore achieved by eliminating one inverter leg and its gate drivers. A modified current control scheme based on the rotor flux orientation principle is presented. Simulation and experimental results are included to verify the independent control capability of the integrated drive.

Tang, Lixin [ORNL; Su, Gui-Jia [ORNL

2008-01-01T23:59:59.000Z

72

DIRECT DRIVE FUSION ENERGY SHOCK IGNITION DESIGNS FOR SUB-MJ LASERS Andrew J. Schmitt, J. W. Bates, S. P. Obenschain, and S. T. Zalesak  

E-Print Network (OSTI)

compresses and burns the relatively cold fuel around it, leading to a release of fusion energy. In the pastDIRECT DRIVE FUSION ENERGY SHOCK IGNITION DESIGNS FOR SUB-MJ LASERS Andrew J. Schmitt, J. W. Bates 20375 R. Betti Fusion Science Center and Laboratory for Laser Energetics, University of Rochester

73

DIRECT DRIVE FUSION ENERGY SHOCK IGNITION DESIGNS FOR SUBMJ LASERS Andrew J. Schmitt, J. W. Bates, S. P. Obenschain, and S. T. Zalesak  

E-Print Network (OSTI)

compresses and burns the relatively cold fuel around it, leading to a release of fusion energy. In the pastDIRECT DRIVE FUSION ENERGY SHOCK IGNITION DESIGNS FOR SUB­MJ LASERS Andrew J. Schmitt, J. W. Bates 20375 R. Betti Fusion Science Center and Laboratory for Laser Energetics, University of Rochester

74

High-megawatt Electric Drive Motors  

Science Conference Proceedings (OSTI)

... Page 2. ABB BU Machines April 10, 2009 | Slide 2 High-megawatt Electric Drive Motors ... motor concept ... A selection of compressor motors >30MW. ...

2012-10-21T23:59:59.000Z

75

Optimizing the Low Temperature Cooling Energy Supply: Experimental Performance of an Absorption Chiller, a Compression Refrigeration Machine and Direct Cooling - a Comparison  

E-Print Network (OSTI)

A strategy to optimize the low temperature cooling energy supply of a newly build office building is discussed against the background of a changing energy system. It is focused on, what production way - Direct Cooling, the Compression Refrigeration Machine or the Absorption Chiller provided with heat from Combined Heat and Power Plants - has the lowest primary energy consumption at what load level. For low levels this is direct cooling. If demand exceeds the capacity of direct cooling, the absorption chiller is the option to choose. However, in future the compression refrigeration machine is more efficient at providing high load levels than the Absorption Chiller. The operation analysis shows that flow rates are often held constant and the re-cooling temperatures are often above the ambient temperature. By the integration of automatic flow rate control and lowering the re-cooling temperature of the chillers, electricity consumption of pumps can be reduced and energy efficiency enhanced.

Uhrhan, S.; Gerber, A.

2012-01-01T23:59:59.000Z

76

Electrostatic Potentials in Rhodopseudomonas Wiridis Reaction Centers: Implications for the Driving Force and Directionality of Electron Transfer  

E-Print Network (OSTI)

Force and Directionality of Electron Transfer M. R. Gunner* Department of Physics, City College of New membrane protein to have a structure solved to atomic resolu- tion.4,5 Since then a higher resolution

Gunner, Marilyn

77

Saturation of the Two-Plasmon Decay Instability in Long-Scale-Length Plasmas Relevant to Direct-Drive Inertial Confinement Fusion  

SciTech Connect

Measurements of the hot-electron generation by the two-plasmon-decay instability are made in plasmas relevant to direct-drive inertial confinement fusion. Density-scale lengths of 400 {micro}m at n{sub cr}/4 in planar CH targets allowed the two-plasmon-decay instability to be driven to saturation for vacuum intensities above ~3.5 x 10{sup 14} W cm{sup -2}. In the saturated regime, ~1% of the laser energy is converted to hot electrons. The hot-electron temperature is measured to increase rapidly from 25 to 90 keV as the laser beam intensity is increased from 2 to 7 x 10{sup 14} W cm{sup -2}. This increase in the hot-electron temperature is compared with predictions from nonlinear Zakharov models.

Yaakobi, B; Hu, S X; Chang, P -Y; Craxton, R S; Edgell, D H; Follett, R; Michel, D T; Myatt, J F; Seka, W; Short, R W; Solodov, A A

2012-04-20T23:59:59.000Z

78

Control system for an interior permanent magnet synchronous machine  

DOE Patents (OSTI)

A high performance, fully operational, four-quadrant control scheme is used in an interior permanent magnet synchronous machine. The machine operates smoothly with full performance in the constant-torque region as well as in the flux-weakening, constant-power region in both directions of motion. The transition between the constant-torque and constant-power regions is very smooth under all conditions of operation. Control in the constant-torque region is based on a vector or field-oriented technique, with the direct-axis aligned with the total stator flux, whereas constant-power region control is accomplished by orientation of the torque angle of the impressed square-wave voltage through the feedforward vector rotator. In a preferred embodiment, the control system employs a digital distributed microcomputer controller arrangement which relies upon various precisely estimated feedback signals, such as torque, flux, etc. The control scheme includes an outer torque control loop primarily for traction type applications, but also contemplates speed and position control loops for various industrial drives. A 70 hp drive system using a Neodymium-Iron-Boron permanent magnet machine and transistor pulse width modulating inverter has been designed and successfully tested. This control scheme also has application in controlling surface permanent magnet machines. 16 figs.

Bose, B.K.

1988-10-12T23:59:59.000Z

79

Direct Drive Wave Energy Buoy  

SciTech Connect

The most prudent path to a full-scale design, build and deployment of a wave energy conversion (WEC) system involves establishment of validated numerical models using physical experiments in a methodical scaling program. This Project provides essential additional rounds of wave tank testing at 1:33 scale and ocean/bay testing at a 1:7 scale, necessary to validate numerical modeling that is essential to a utility-scale WEC design and associated certification.

Rhinefrank, Kenneth E. [Columbia Power Technologies, Inc.; Lenee-Bluhm, Pukha [Columbia Power Technologies, Inc.; Prudell, Joseph H. [Columbia Power Technologies, Inc.; Schacher, Alphonse A. [Columbia Power Technologies, Inc.; Hammagren, Erik J. [Columbia Power Technologies, Inc.; Zhang, Zhe [Columbia Power Technologies, Inc.

2013-07-29T23:59:59.000Z

80

A Machine Approach for Field Weakening of Permanent-Magnet Motors  

SciTech Connect

The commonly known technology of field weakening for permanent-magnet (PM) motors is achieved by controlling the direct-axis current component through an inverter, without using mechanical variation of the air gap, a new machine approach for field weakening of PM machines by direct control of air-gap fluxes is introduced. The demagnetization situation due to field weakening is not an issue with this new method. In fact, the PMs are strengthened at field weakening. The field-weakening ratio can reach 1O:1 or higher. This technology is particularly useful for the PM generators and electric vehicle drives.

Hsu, J.S.

2000-04-02T23:59:59.000Z

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


81

CONTROL ROD DRIVE  

DOE Patents (OSTI)

BS>A drive mechanism was invented for the control rod of a nuclear reactor. Power is provided by an electric motor and an outside source of fluid pressure is utilized in conjunction with the fluid pressure within the reactor to balance the loadings on the motor. The force exerted on the drive mechanism in the direction of scramming the rod is derived from the reactor fluid pressure so that failure of the outside pressure source will cause prompt scramming of the rod.

Chapellier, R.A.

1960-05-24T23:59:59.000Z

82

Dependence of Shell Mix on Feedthrough in Direct Drive Inertial Confinement Fusion S. P. Regan, J. A. Delettrez, V. N. Goncharov, F. J. Marshall, J. M. Soures, V. A. Smalyuk, P. B. Radha, B. Yaakobi,  

E-Print Network (OSTI)

Dependence of Shell Mix on Feedthrough in Direct Drive Inertial Confinement Fusion S. P. Regan, J 87545, USA J. A. Frenje, C. K. Li, R. D. Petrasso, and F. H. Se´guin Plasma Science and Fusion Center May 2004) The mixing of cold, high-density shell plasma with the low-density, hot spot plasma

83

Electric machine  

SciTech Connect

An interior permanent magnet electric machine is disclosed. The interior permanent magnet electric machine comprises a rotor comprising a plurality of radially placed magnets each having a proximal end and a distal end, wherein each magnet comprises a plurality of magnetic segments and at least one magnetic segment towards the distal end comprises a high resistivity magnetic material.

El-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Reddy, Patel Bhageerath (Madison, WI)

2012-07-17T23:59:59.000Z

84

JGI - Directions  

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

Directions Address DOE Joint Genome Institute 2800 Mitchell Drive Walnut Creek, CA 94598 From Oakland Airport Follow Airport exit signs onto AIRPORT DR. Turn RIGHT onto HEGENBERGER...

85

Meso-machining  

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

following meso-machin- ing technologies: * Focused ion beam (FIB) machining, * Micro-milling and -turning, * Femto-second laser machining * Micro-Electro Discharge Machining...

86

Traction sheave elevator, hoisting unit and machine space  

DOE Patents (OSTI)

Traction sheave elevator consisting of an elevator car moving along elevator guide rails, a counterweight moving along counterweight guide rails, a set of hoisting ropes (3) on which the elevator car and counterweight are suspended, and a drive machine unit (6) driving a traction sheave (7) acting on the hoisting ropes (3) and placed in the elevator shaft. The drive machine unit (6) is of a flat construction. A wall of the elevator shaft is provided with a machine space with its open side facing towards the shaft, the essential parts of the drive machine unit (6) being placed in the space. The hoisting unit (9) of the traction sheave elevator consists of a substantially discoidal drive machine unit (6) and an instrument panel (8) mounted on the frame (20) of the hoisting unit.

Hakala, Harri (Hyvinkaa, FI); Mustalahti, Jorma (Hyvinkaa, FI); Aulanko, Esko (Kerava, FI)

2000-01-01T23:59:59.000Z

87

Machine therapy  

E-Print Network (OSTI)

Machine Therapy is a new practice combining art, design, psychoanalysis, and engineering work in ways that access and reveal the vital, though often unnoticed, relevance of people's interactions and relationships with ...

Dobson, Kelly E. (Kelly Elizabeth), 1970-

2007-01-01T23:59:59.000Z

88

Induction machine  

DOE Patents (OSTI)

A polyphase rotary induction machine for use as a motor or generator utilizing a single rotor assembly having two series connected sets of rotor windings, a first stator winding disposed around the first rotor winding and means for controlling the current induced in one set of the rotor windings compared to the current induced in the other set of the rotor windings. The rotor windings may be wound rotor windings or squirrel cage windings.

Owen, Whitney H. (Ogden, UT)

1980-01-01T23:59:59.000Z

89

FreedomCAR Advanced Traction Drive Motor Development Phase I  

DOE Green Energy (OSTI)

The overall objective of this program is to design and develop an advanced traction motor that will meet the FreedomCAR and Vehicle Technologies (FCVT) 2010 goals and the traction motor technical targets. The motor specifications are given in Section 1.3. Other goals of the program include providing a cost study to ensure the motor can be developed within the cost targets needed for the automotive industry. The program has focused on using materials that are both high performance and low costs such that the performance can be met and cost targets are achieved. In addition, the motor technologies and machine design features must be compatible with high volume manufacturing and able to provide high reliability, efficiency, and ruggedness while simultaneously reducing weight and volume. Weight and volume reduction will become a major factor in reducing cost, material cost being the most significant part of manufacturing cost at high volume. Many motor technology categories have been considered in the past and present for traction drive applications, including: brushed direct current (DC), PM (PM) brushless dc (BLDC), alternating current (AC) induction, switched reluctance and synchronous reluctance machines. Of these machine technologies, PM BLDC has consistently demonstrated an advantage in terms of power density and efficiency. As rare earth magnet cost has declined, total cost may also be reduced over the other technologies. Of the many different configurations of PM BLDC machines, those which incorporate power production utilizing both magnetic torque as well as reluctance torque appear to have the most promise for traction applications. There are many different PM BLDC machine configurations which employ both of these torque producing mechanisms; however, most would fall into one of two categories--some use weaker magnets and rely more heavily on reluctance torque (reluctance-dominant PM machines), others use strong PMs and supplement with reluctance torque (magnet-dominant PM machines). This report covers a trade study that was conducted in this phase I program to explore which type of machine best suits the FCVT requirements.

Ley, Josh (UQM Technologies, Inc.); Lutz, Jon (UQM Technologies, Inc.)

2006-09-01T23:59:59.000Z

90

Laser machining of explosives  

DOE Patents (OSTI)

The invention consists of a method for machining (cutting, drilling, sculpting) of explosives (e.g., TNT, TATB, PETN, RDX, etc.). By using pulses of a duration in the range of 5 femtoseconds to 50 picoseconds, extremely precise and rapid machining can be achieved with essentially no heat or shock affected zone. In this method, material is removed by a nonthermal mechanism. A combination of multiphoton and collisional ionization creates a critical density plasma in a time scale much shorter than electron kinetic energy is transferred to the lattice. The resulting plasma is far from thermal equilibrium. The material is in essence converted from its initial solid-state directly into a fully ionized plasma on a time scale too short for thermal equilibrium to be established with the lattice. As a result, there is negligible heat conduction beyond the region removed resulting in negligible thermal stress or shock to the material beyond a few microns from the laser machined surface. Hydrodynamic expansion of the plasma eliminates the need for any ancillary techniques to remove material and produces extremely high quality machined surfaces. There is no detonation or deflagration of the explosive in the process and the material which is removed is rendered inert.

Perry, Michael D. (Livermore, CA); Stuart, Brent C. (Fremont, CA); Banks, Paul S. (Livermore, CA); Myers, Booth R. (Livermore, CA); Sefcik, Joseph A. (Tracy, CA)

2000-01-01T23:59:59.000Z

91

New aggregation programs drive consumer participation in Illinois ...  

U.S. Energy Information Administration (EIA)

New aggregation programs drive consumer participation ... Ameren Energy Marketing, Direct Energy ... (buying their electricity from renewable generators) ...

92

Inherent fluctuation-mediated equivalent force drives directional motions of nanoscale asymmetric particles -- Surf-riding of asymmetric molecules in thermal fluctuations  

E-Print Network (OSTI)

Using a simple theoretical model of a nanoscale asymmetric particle/molecule with asymmetric structure or/and asymmetric charge distribution, here using a charge dipole as an example, we show that there is unidirectional transportation mediated by non-white fluctuations if the asymmetric orientation of the particle/molecule is constrained. This indicates the existence of an inherent equivalent force, which drives the particle/molecule itself along the orientation of the asymmetric particle in the environment of fluctuations. In practical systems, equivalent force also exist in the asymmetric molecules, such as water and ethanol, at the ambient condition since thermal fluctuations are not white anymore at nanoscale [Wan, R., J. Hu, and H. Fang, Sci. China Phys. Mech. Astron. 2012, 55, 751]. Molecular dynamic simulations show that there is unidirectional transportation of an ultrathin water layer on solid surface at room temperature when the orientations of water molecules have a preference. The finding will play an essential role in the understanding of the world from a molecular view and the developing of novel technology for various nanoscale and bulk applications, such as chemical separation, water treatment, sensing and drug delivery.

Yusong Tu; Nan Sheng; Rongzheng Wan; Haiping Fang

2013-07-23T23:59:59.000Z

93

Substrate denaturation and translocation by a proteolytic machine  

E-Print Network (OSTI)

Many AAA+ molecular machines generate power and drive cellular processes by harnessing energy from cycles of ATP hydrolysis. ClpX is a relatively simple AAA+ ATPase that powers regulated protein degradation by binding ...

Kenniston, Jon Anders

2005-01-01T23:59:59.000Z

94

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

This patent describes a rotary drive mechanism which includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de- energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti- overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, E.W.

1991-10-08T23:59:59.000Z

95

Rotary drive mechanism  

Science Conference Proceedings (OSTI)

A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

Kenderdine, Eugene W. (Albuquerque, NM)

1991-01-01T23:59:59.000Z

96

Fusion Energy Research with Lasers, Direct Drive Targets, and Dry Wall J.D. SETHIAN, S.P. OBENSCHAIN, M. MYERS, A J. SCHMITT, D. COLOMBANT, J.  

E-Print Network (OSTI)

. GIULIANI, P. KEPPLE, and S. SWANEKAMP Plasma Physics Division, Naval Research Laboratory, Washington, DC D in development of chamber operating windows (target survival plus no wall erosion), final optics (aluminum optical windows. Electra should produce 400-700 J in 100 nsec. The technologies will be directly scalable

Najmabadi, Farrokh

97

Accelerating Turing Machines  

Science Conference Proceedings (OSTI)

Accelerating Turing machines are Turing machines of a sort able to perform tasks that are commonly regarded as impossible for Turing machines. For example, they can determine whether or not the decimal representation of ? contains n consecutive 7s, ... Keywords: ?-machine, Chinese room argument, ChurchTuring thesis, accelerating Turing machine, decision problem, effective procedure, halting problem, hypercomputation, hypercomputer, infinity machine, oracle machine, super-task

B. Jack Copeland

2002-05-01T23:59:59.000Z

98

Machine Tool Locator  

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

gathered and used to set the position of the machine tool and to measure the size and shape of the machine tool tip, and examine cutting edge wear. April 18, 2013 machine tool...

99

Socially guided machine learning  

E-Print Network (OSTI)

Social interaction will be key to enabling robots and machines in general to learn new tasks from ordinary people (not experts in robotics or machine learning). Everyday people who need to teach their machines new things ...

Thomaz, Andrea Lockerd

2006-01-01T23:59:59.000Z

100

Machines reviving humans  

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

The machines you may be referring to include machines to electrically stimulate the heart into again having a normal sequence of electrical impulses necessary for sustained...

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


101

Vehicle Technologies Office: Materials for Hybrid and Electric Drive  

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

for Hybrid and for Hybrid and Electric Drive Systems to someone by E-mail Share Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Facebook Tweet about Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Twitter Bookmark Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Google Bookmark Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Delicious Rank Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on Digg Find More places to share Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines

102

Nontraditional Machining of Dies and Molds  

Science Conference Proceedings (OSTI)

...instability (Ref 9, 10). When coupled with ultrafast controllers operating on 2 μs control loops and glass scales to directly measure the motion of the machines axes, linear motors enable EDM machines to react to process instabilities quickly, leading to increased process speed and decreased risk of...

103

Holiday Food Drive  

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

Food Drive Food Drive Holiday Food Drive During the recent holiday food drive, employees donated enough food to provide about 23,604 holiday meals for Northern New Mexico families. More than 432 frozen turkeys were donated this year by employees and other donors during 'Bring a Turkey to Work Day,' an annual Lab event that takes places Thanksgiving week. September 16, 2013 LANL employees organize food for the Holiday Food Drive. Contacts Giving Drives Ed Vigil Community Programs Office (505) 665-9205 Email Giving Drives Enrique Trujillo Community Programs Office (505) 665-6384 Email Helping feed Northern New Mexico families Community partners The Food Depot (Santa Fe) Del Norte Credit Union Smith's Food and Drug Giving Holiday Food Drive Holiday Gift Drive LANL Laces Los Alamos Employees' Scholarship Fund

104

High pressure water jet mining machine  

DOE Patents (OSTI)

A high pressure water jet mining machine for the longwall mining of coal is described. The machine is generally in the shape of a plowshare and is advanced in the direction in which the coal is cut. The machine has mounted thereon a plurality of nozzle modules each containing a high pressure water jet nozzle disposed to oscillate in a particular plane. The nozzle modules are oriented to cut in vertical and horizontal planes on the leading edge of the machine and the coal so cut is cleaved off by the wedge-shaped body.

Barker, Clark R. (Rolla, MO)

1981-05-05T23:59:59.000Z

105

Developments in Direct Drive Laser Fusion  

Science Conference Proceedings (OSTI)

IFE / Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 1), Nashville, Tennessee, August 27-31, 2012

J. L. Weaver et al.

106

Passively cooled direct drive wind turbine  

SciTech Connect

A wind turbine is provided that passively cools an electrical generator. The wind turbine includes a plurality of fins arranged peripherally around a generator house. Each of the fins being oriented at an angle greater than zero degrees to allow parallel flow of air over the fin. The fin is further tapered to allow a constant portion of the fin to extend beyond the air stream boundary layer. Turbulence initiators on the nose cone further enhance heat transfer at the fins.

Costin, Daniel P. (Chelsea, VT)

2008-03-18T23:59:59.000Z

107

AOCS USB Flash Drive  

Science Conference Proceedings (OSTI)

1 GB flash drive. AOCS logo printed on aluminum cover. AOCS USB Flash Drive Membership Merchandise Membership Merchandise 7F95621DF44FEA960BA8EE1D1E39CED4 1 GB USB flash drive. AOCS logo printed on aluminum cover. M-USB 17770

108

Electricity use by machine drives varies significantly by ...  

U.S. Energy Information Administration (EIA)

Home; Browse by Tag; Most ... share of energy use within that industry because of the significant amounts of ... gains as well as current technology and its potential ...

109

Electricity use by machine drives varies significantly by ...  

U.S. Energy Information Administration (EIA)

The effects of increases in shipments and increases in energy efficiency are considered in EIA's long-term energy projections. For example, in ...

110

Drill drive mechanism  

DOE Patents (OSTI)

A drill drive mechanism is especially adapted to provide both rotational drive and axial feed for a drill of substantial diameter such as may be used for drilling holes for roof bolts in mine shafts. The drill shaft is made with a helical pattern of scroll-like projections on its surface for removal of cuttings. The drill drive mechanism includes a plurality of sprockets carrying two chains of drive links which are arranged to interlock around the drill shaft with each drive link having depressions which mate with the scroll-like projections. As the chain links move upwardly or downwardly the surfaces of the depressions in the links mate with the scroll projections to move the shaft axially. Tangs on the drive links mate with notch surfaces between scroll projections to provide a means for rotating the shaft. Projections on the drive links mate together at the center to hold the drive links tightly around the drill shaft. The entire chain drive mechanism is rotated around the drill shaft axis by means of a hydraulic motor and gear drive to cause rotation of the drill shaft. This gear drive also connects with a differential gearset which is interconnected with a second gear. A second motor is connected to the spider shaft of the differential gearset to produce differential movement (speeds) at the output gears of the differential gearset. This differential in speed is utilized to drive said second gear at a speed different from the speed of said gear drive, this speed differential being utilized to drive said sprockets for axial movement of said drill shaft.

Dressel, Michael O. (Englewood, CO)

1979-01-01T23:59:59.000Z

111

Vehicle Technologies Office: Electrical Machines  

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

Electrical Machines to Electrical Machines to someone by E-mail Share Vehicle Technologies Office: Electrical Machines on Facebook Tweet about Vehicle Technologies Office: Electrical Machines on Twitter Bookmark Vehicle Technologies Office: Electrical Machines on Google Bookmark Vehicle Technologies Office: Electrical Machines on Delicious Rank Vehicle Technologies Office: Electrical Machines on Digg Find More places to share Vehicle Technologies Office: Electrical Machines on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Power Electronics Electrical Machines Thermal Control & System Integration Advanced Combustion Engines Fuels & Lubricants Materials Technologies Electrical Machines Emphasis in the electrical machines activity is on advanced motor

112

Electrical motor/generator drive apparatus and method - Energy ...  

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and ...

113

ELECTRICAL MOTOR/GENERATOR DRIVE APPARATUS AND METHOD - Energy ...  

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple ...

114

Holiday Gift Drive  

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

Holiday Gift Drive Holiday Gift Drive Holiday Gift Drive Every year, Laboratory employees help fulfill the holiday wishes of children and seniors in our communities. In 2012, our employees helped more than 1,030 Northern New Mexico children, senior citizens and families have a brighter holiday season. September 16, 2013 Every holiday season, employees of Los Alamos National Laboratory donate and distribute gifts to families in need throughout Northern New Mexico. Contacts Giving Drives Ed Vigil Community Programs Office (505) 665-9205 Email Giving Drives Enrique Trujillo Community Programs Office (505) 665-6384 Email Helping New Mexico families feel the holiday spirit The 2013 campaign runs from November 21-December 18. 2012 Holiday Gift Drive partners Boys and Girls Club Del Norte (Abiquiu Site)

115

Hydromechanical transmission with hydrodynamic drive  

DOE Patents (OSTI)

This transmission has a first planetary gear assembly having first input means connected to an input shaft, first output means, and first reaction means, and a second planetary gear assembly having second input means connected to the first input means, second output means, and second reaction means connected directly to the first reaction means by a reaction shaft. First clutch means, when engaged, connect the first output means to an output shaft in a high driving range. A hydrodynamic drive is used; for example, a torque converter, which may or may not have a stationary case, has a pump connected to the second output means, a stator grounded by an overrunning clutch to the case, and a turbine connected to an output member, and may be used in a starting phase. Alternatively, a fluid coupling or other type of hydrodynamic drive may be used. Second clutch means, when engaged, for connecting the output member to the output shaft in a low driving range. A variable-displacement hydraulic unit is mechanically connected to the input shaft, and a fixed-displacement hydraulic unit is mechanically connected to the reaction shaft. The hydraulic units are hydraulically connected together so that when one operates as a pump the other acts as a motor, and vice versa. Both clutch means are connected to the output shaft through a forward-reverse shift arrangement. It is possible to lock out the torque converter after the starting phase is over.

Orshansky, Jr., deceased, Elias (LATE OF San Francisco, CA); Weseloh, William E. (San Diego, CA)

1979-01-01T23:59:59.000Z

116

Electric top drives gain wide industry acceptance  

Science Conference Proceedings (OSTI)

Since its introduction, the top drive drilling system has gained acceptance as a productive and safe method for drilling oil and gas wells. Originally, the system was used mostly for offshore and higher cost land drilling, and it had to be installed as a permanent installation because of its enormous weight and size. Essentially, a top drive replaces the kelly and rotary table as the means of rotating drillpipe on oil, gas and geothermal rigs and is considered to be 15% to 40% more efficient than a kelly drive. Top drive systems allow the operator to drill and maintain directional orientation for triple stands and provide tripping efficiency because of the ability to ream and circulate with triple stands, to reduce the risk of stuck pipe or lost wells, and to improve well control and pipe handling safety. The paper describes electric top drives with DC motors, top drives with AC motors, top drives with permanent magnet motors, and top drives with permanent magnet brushless synchronous motors.

Riahi, M.L.

1998-05-01T23:59:59.000Z

117

Piezoelectric drive circuit  

DOE Patents (OSTI)

A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

Treu, Jr., Charles A. (Raymore, MO)

1999-08-31T23:59:59.000Z

118

Piezoelectric drive circuit  

DOE Patents (OSTI)

A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

Treu, C.A. Jr.

1999-08-31T23:59:59.000Z

119

Traction Drive Systems Breakout  

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

Traction Drive Systems Breakout Traction Drive Systems Breakout John M. Miller, PhD, PE, F.IEEE, F.SAE Oak Ridge National Laboratory Facilitator July 24, 2012 EV Everywhere Grand Challenge Vehicle Technologies Program - Advanced Power Electronics and Electric Motors eere.energy.gov EV Everywhere Traction Drive System * DOE goals for Electric Traction Drive System (TDS) innovations must be disruptive innovation focused to meet the CY2022 price target ($20,000 $25,000) for a mid-sized 5 passenger sedan having 5 year simple payback. Enhanced Efficiency Reduced Cost Traction Drive System EETT Roadmap: "Therefore, research is needed to develop technologies that are less expensive and, at the same time, smaller, lighter, more efficient, and equally reliable as conventional automotive technologies. "

120

Precise global collision detection in multi-axis NC-machining  

Science Conference Proceedings (OSTI)

We introduce a new approach to the problem of collision detection in multi-axis NC-machining. Due to the directional nature (tool axis) of multi-axis NC-machining, space subdivision techniques are adopted from ray-tracing algorithms and are extended ... Keywords: 5-Axis machining, Collision detection and verification, Lower envelopes, NC-machining, Ray tracing, Space subdivision

Oleg Ilushin; Gershon Elber; Dan Halperin; Ron Wein; Myung-Soo Kim

2005-08-01T23:59:59.000Z

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


121

Harmonic control of multiple-stator induction machines for voltage regulation  

E-Print Network (OSTI)

Small, one to a few horsepower, three-phase induction machines with three sets of electrically-isolated, magnetically-coupled stator winding circuits are described. A voltage inverter is developed and used to drive one set ...

Holloway, Jack Wade, 1980-

2004-01-01T23:59:59.000Z

122

Energy conversion apparatus for supplying variable voltage direct current power to an electrically propelled vehicle  

SciTech Connect

A synchronous machine, operable as both a motor and a generator, is mounted on an electrically powered vehicle, such as a mine shuttle car, and includes a plurality of conductors having connections that are detachably engagable with receptacles of a stationary power bank. Engagement of the conductors with the receptacles supplies variable voltage alternating current power to the machine. The machine is drivingly connected to a flywheel on the vehicle and, operating as a motor, energizes the flywheel to store a preselected amount of mechanical energy. The electrical connection between the vehicle and the power bank is opened after the flywheel has been sufficiently charged. The stored energy in the flywheel is then available to drive the machine as a generator and produce high frequency, three phase, alternating current power. The generated power is transmitted to a full wave silicon controlled rectifier that converts the alternating current power to direct current for powering the traction motors of the vehicle. A variable voltage controller is connected to the rectifier and actuates the rectifier to supply direct current at a selected voltage level. The controller is responsive to an operator foot pedal. By manually depressing the foot pedal to a selected position, the voltage level of the rectified current is controlled. Thus, the speed of the traction motors is adjustable topropel the vehicle at a speed within a given range. After a portion of the energy stored by the flywheel is consumed, the vehicle is returned to the power bank to replenish the energy supply.

Jamison, W.B.; Burr, J.F.

1976-09-07T23:59:59.000Z

123

Base drive and overlap protection circuit  

DOE Patents (OSTI)

An inverter (34) which provides power to an A. C. machine (28) is controlled by a circuit (36) employing PWM control strategy whereby A. C. power is supplied to the machine at a preselectable frequency and preselectable voltage. This is accomplished by the technique of waveform notching in which the shapes of the notches are varied to determine the average energy content of the overall waveform. Through this arrangement, the operational efficiency of the A. C. machine is optimized. The control circuit includes a microcomputer and memory element which receive various parametric inputs and calculate optimized machine control data signals therefrom. The control data is asynchronously loaded into the inverter through an intermediate buffer (38). A base drive and overlap protection circuit is included to insure that both transistors of a complimentary pair are not conducting at the same time. In its preferred embodiment, the present invention is incorporated within an electric vehicle (10) employing a 144 VDC battery pack (32) and a three-phase induction motor (18).

Gritter, David J. (Southfield, MI)

1983-01-01T23:59:59.000Z

124

finite state machine  

Science Conference Proceedings (OSTI)

... Moore machine), multiple start states, transitions conditioned on no input symbol (a null) or more than one transition for a given symbol and state ( ...

2013-11-08T23:59:59.000Z

125

Method and apparatus for characterizing and enhancing the functional performance of machine tools  

DOE Patents (OSTI)

Disclosed are various systems and methods for assessing and improving the capability of a machine tool. The disclosure applies to machine tools having at least one slide configured to move along a motion axis. Various patterns of dynamic excitation commands are employed to drive the one or more slides, typically involving repetitive short distance displacements. A quantification of a measurable merit of machine tool response to the one or more patterns of dynamic excitation commands is typically derived for the machine tool. Examples of measurable merits of machine tool performance include workpiece surface finish, and the ability to generate chips of the desired length.

Barkman, William E; Babelay, Jr., Edwin F; Smith, Kevin Scott; Assaid, Thomas S; McFarland, Justin T; Tursky, David A; Woody, Bethany; Adams, David

2013-04-30T23:59:59.000Z

126

Intrusions: What Drives Them?  

Science Conference Proceedings (OSTI)

The driving mechanism for the observed interleaving of water masses is generally assumed to be double-diffusive mixing. However, some observations of intrusions have been made in regions where the mean stratification is stable to double-diffusive ...

Dave Hebert

1999-06-01T23:59:59.000Z

127

Control rod drive  

DOE Patents (OSTI)

A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

Hawke, Basil C. (Solana Beach, CA)

1986-01-01T23:59:59.000Z

128

Stirling machine operating experience  

Science Conference Proceedings (OSTI)

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

Ross, B. [Stirling Technology Co., Richland, WA (United States); Dudenhoefer, J.E. [Lewis Research Center, Cleveland, OH (United States)

1994-09-01T23:59:59.000Z

129

Ensemble modeling of transport and dispersion simulations guided by machine learning hypotheses generation  

Science Conference Proceedings (OSTI)

In this article an approach is presented where machine learning classifiers are used to drive an ensemble modeling method of multiple atmospheric transport and dispersion simulations. The goal is to achieve a higher spread of the results with a lower ... Keywords: Ensemble modeling, Machine learning, Transport and dispersion simulations

Andreas D. Lattner; Guido Cervone

2012-11-01T23:59:59.000Z

130

Simulation of Photovoltaic Array-driven Electric Machines with Power Electronic Interfaces  

Science Conference Proceedings (OSTI)

Power electronic interfaces between photovoltaic (PV) arrays and electric machines are necessary in order to match the drive characteristics with the characteristics of the array for efficient utilization of the resource. This paper proposes a model ... Keywords: MATLAB/SIMULINK modeling, electric machines, photovoltaic array, power electronics, simulation

S. Arul Daniel; N. Ammasai Gounden

2010-11-01T23:59:59.000Z

131

School supply drive winding down  

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

submit School supply drive winding down The drive is collecting materials for schools throughout Northern New Mexico and will be distributed by the Lab and Self Help, Inc....

132

Electric Drive Status and Challenges  

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

to Achieve Traction Drive Cost Target * Inverter: cold plate, drive boards, thermal interface material, bus bar, current sensors, housing, control board, etc. Motor:...

133

Methods, systems and apparatus for synchronous current regulation of a five-phase machine  

DOE Patents (OSTI)

Methods, systems and apparatus are provided for controlling operation of and regulating current provided to a five-phase machine when one or more phases has experienced a fault or has failed. In one implementation, the disclosed embodiments can be used to synchronously regulate current in a vector controlled motor drive system that includes a five-phase AC machine, a five-phase inverter module coupled to the five-phase AC machine, and a synchronous current regulator.

Gallegos-Lopez, Gabriel; Perisic, Milun

2012-10-09T23:59:59.000Z

134

Vehicle Technologies Office: Electrical Machines  

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

Electrical Machines Emphasis in the electrical machines activity is on advanced motor technologies, performance, low-cost materials, and thermal control systems that will yield...

135

Ceramic vane drive joint  

SciTech Connect

A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.

Smale, Charles H. (Indianapolis, IN)

1981-01-01T23:59:59.000Z

136

LCLS Injector Drive Laser  

SciTech Connect

Requirements for the LCLS injector drive laser present significant challenges to the design of the system. While progress has been demonstrated in spatial shape, temporal shape, UV generation and rep-rate, a laser that meets all of the LCLS specifications simultaneously has yet to be demonstrated. These challenges are compounded by the stability and reliability requirements. The drive laser and transport system has been installed and tested. We will report on the current operational state of the laser and plans for future improvements.

Dowell, D.H.; Castro, J.; Emma, P.; Frisch, J.; Gilevich, A.; Hays, G.; Hering, P.; Limborg-Deprey, C.; Loos, H.; Miahnahri, A.; White, W.; /SLAC

2007-11-02T23:59:59.000Z

137

CONTROL ROD DRIVE  

DOE Patents (OSTI)

Accurate and controlled drive for the control rod is from an electric motor. A hydraulic arrangement is provided to balance a piston against which a control rod is urged by the application of fluid pressure. The electric motor drive of the control rod for normal operation is made through the aforementioned piston. In the event scramming is required, the fluid pressure urging the control rod against the piston is relieved and an opposite fluid pressure is applied. The lack of mechanical connection between the electric motor and control rod facilitates the scramming operation.

Chapellier, R.A.; Rogers, I.

1961-06-27T23:59:59.000Z

138

Drive5 | Open Energy Information  

Open Energy Info (EERE)

Drive5 Drive5 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Drive5 Agency/Company /Organization: Drive5 Sector: Energy Focus Area: Vehicles Resource Type: Software/modeling tools User Interface: Website, Mobile Device Website: www.drive5.us Web Application Link: www.drive5.us Cost: Free OpenEI Keyword(s): Challenge Generated Drive5 Screenshot References: Drive5[1] Challenge.gov[2] Challenge.gov Submission Page[3] Measure your fuel economy real time with five metrics to save on fuel costs. Overview Drive1: Fuel Economy Drive5 gives you real time fuel economy feedback for any car 1984 and newer by simply utilizing the sensors embedded in your phone or tablet. It uses a statistical algorithm which leverages the fueleconomy.gov's open dataset along with data from thousands of automobile trips. No connections to the

139

Human-machine interactions  

DOE Patents (OSTI)

Digital technology utilizing a cognitive model based on human naturalistic decision-making processes, including pattern recognition and episodic memory, can reduce the dependency of human-machine interactions on the abilities of a human user and can enable a machine to more closely emulate human-like responses. Such a cognitive model can enable digital technology to use cognitive capacities fundamental to human-like communication and cooperation to interact with humans.

Forsythe, J. Chris (Sandia Park, NM); Xavier, Patrick G. (Albuquerque, NM); Abbott, Robert G. (Albuquerque, NM); Brannon, Nathan G. (Albuquerque, NM); Bernard, Michael L. (Tijeras, NM); Speed, Ann E. (Albuquerque, NM)

2009-04-28T23:59:59.000Z

140

2013 FCMN Directions  

Science Conference Proceedings (OSTI)

... $100 (one way). Driving directions: Take I-95S to Exit 4B towards Washington.Merge onto I-495 to Exit 27 towards Silver Spring.Slight right onto ...

2013-02-27T23:59:59.000Z

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


141

Grading of construction aggregate through machine vision: Results and prospects  

Science Conference Proceedings (OSTI)

Traditionally, crushed aggregate to be used in construction is graded using sieves. We describe an innovative machine vision approach to such grading. Our operational scenario is one where a camera takes images from directly overhead of a layer of aggregate ... Keywords: Construction industry, Image database, Machine vision, Supervised and unsupervised classification, Wavelet transform

Fionn Murtagh; Xiaoyu Qiao; Paul Walsh; P. A. M. Basheer; Danny Crookes; Adrian Long

2005-12-01T23:59:59.000Z

142

Electrical motor/generator drive apparatus and method  

SciTech Connect

The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

Su, Gui Jia

2013-02-12T23:59:59.000Z

143

Chinese demand drives global deforestation Chinese demand drives global deforestation  

E-Print Network (OSTI)

Chinese demand drives global deforestation Chinese demand drives global deforestation By Tansa Musa zones and do not respect size limits in their quest for maximum financial returns. "I lack words economy. China's demand for hardwood drives illegal logging says "Both illegal and authorized

144

BCDA Machine Status Link  

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

Machine Status Link Machine Status Link Version 1.33 (December 2005) David M. Kline. The Machine Status Link (MSL) is responsible for distributing the digitized beam current, injection status, P0 clock, and other statuses over a single fiber to several locations around the Storage Ring. The MRD100 is a VME-based module that is part of the MSL and was specifically designed for the APS. It receives and interprets information from the XMS100 module by means of copper or fiber. Signals from the XMS100 module are sent at a P0 rate (3.667 microseconds). It sends two registers every cycle and all in about 12 cycles. Refer to the ASD website for additional information regarding the MSL. The focus of this page is to provide information of how to configure the MRD100 for a beamline IOC and to discuss the sample IOC

145

Portable top drive cuts horizontal drilling costs  

SciTech Connect

Economic analysis of a seven-well, long-reach horizontal drilling program into an unconsolidated, heavy-oil-bearing reservoir in Winter field near the Alberta/Saskatchewan border in Canada reveals that -- in the right application -- renting a portable top drive drilling system can reduce total drilling costs. Use of the portable top drive combined with other cost-saving measures enabled Saskoil, one of Canada`s larger independents, to drill more cheaply, on a cost-per-meter basis, in 1993 than in 1992. This was despite significant rental rates for drilling rigs and directional drilling services caused by increased demand in Western Canada. Total cost savings of 10% on wells that would otherwise cost in the (C) $500,000 range are believed realistic. Based on this year`s performance, Saskoil recommends top drive for the company`s future horizontal wells in this area. This article describes the operator`s horizontal well program, advantages of top drive in that program and how it was installed and applied. Estimated time savings for six wells, plus other ways top drive can cut costs and improve operations are discussed.

Jackson, B. [Saskoil, Regina, Saskatchewan (Canada); Yager, D. [Tesco Drilling Tech., Calgary, Alberta (Canada)

1993-11-01T23:59:59.000Z

146

Automated fiber pigtailing machine  

DOE Patents (OSTI)

The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectronic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems. 26 figs.

Strand, O.T.; Lowry, M.E.

1999-01-05T23:59:59.000Z

147

Development and validation of compressible mixture viscous fluid algorithm applied to predict the evolution of inertial fusion energy chamber gas and the impact of gas on direct-drive target survival  

E-Print Network (OSTI)

Symp. on Rarefied Gas Dyn. [51] R. Martin and F. Najmabadi.Direct Simulation, R. Martin and F. Najmabadi, To AppearFluid Dynamics, R. Martin, University of California Mas-

Martin, Robert Scott

2011-01-01T23:59:59.000Z

148

Positional reference system for ultraprecision machining  

DOE Patents (OSTI)

A stable positional reference system for use in improving the cutting tool-to-part contour position in numerical controlled-multiaxis metal turning machines is provided. The reference system employs a plurality of interferometers referenced to orthogonally disposed metering bars which are substantially isolated from machine strain induced position errors for monitoring the part and tool positions relative to the metering bars. A microprocessor-based control system is employed in conjunction with the plurality of position interferometers and part contour description data inputs to calculate error components for each axis of movement and output them to corresponding axis drives with appropriate scaling and error compensation. Real-time position control, operating in combination with the reference system, makes possible the positioning of the cutting points of a tool along a part locus with a substantially greater degree of accuracy than has been attained previously in the art by referencing and then monitoring only the tool motion relative to a reference position located on the machine base.

Arnold, Jones B. (Knoxville, TN); Burleson, Robert R. (Clinton, TN); Pardue, Robert M. (Knoxville, TN)

1982-01-01T23:59:59.000Z

149

Operating the Lisp Machine  

E-Print Network (OSTI)

This document is a draft copy of a portion of the Lisp Machine window system manual. It is being published in this form now to make it available, since the complete window system manual is unlikely to be finished in the ...

Moon, David A.

150

Scalable formal machine models  

Science Conference Proceedings (OSTI)

In the past few years, we have seen machine-checked proofs of relatively large software systems, including compilers and micro-kernels. But like all formal arguments, the assurance gained by these mechanical proofs is only as good as the models we construct ...

Greg Morrisett

2012-12-01T23:59:59.000Z

151

Logically Possible Machines  

Science Conference Proceedings (OSTI)

I use modal logic and transfinite set-theory to define metaphysical foundations for a general theory of computation. A possible universe is a certain kind of situation; a situation is a set of facts. An algorithm is a certain kind of inductively defined ... Keywords: convergence, fixed-point, infinite algorithm, infinite machine, infinite mind, limit, possible world, situation, super-Turing computer

Eric Steinhart

2002-05-01T23:59:59.000Z

152

Fast wave current drive system design for DIII-D  

SciTech Connect

DIII-D has a major effort underway to develop the physics and technology of fast wave electron heating and current drive in conjunction with electron cyclotron heating. The present system consists of a four strap antenna driven by one 2 MW transmitter in the 32--60 MHz band. Experiments have been successful in demonstrating the physics of heating and current drive. In order to validate fast wave current drive for future machines a greater power capability is necessary to drive all of the plasma current. Advanced tokamak modeling for DIII-D has indicated that this goal can be met for plasma configurations of interest (i.e. high [beta] VH-mode discharges) with 8 MW of transmitter fast wave capability. It is proposed that four transmitters drive fast wave antennas at three locations in DIII-D to provide the power for current drive and current profile modification. As the next step in acquiring this capability, two modular four strap antennas are in design and the procurement of a high power transmitter in the 30--120 MHz range is in progress. Additionally, innovations in the technology are being investigated, such as the use of a coupled combine antenna to reduce the number of required feedthroughs and to provide for parallel phase velocity variation with a relatively small change in frequency, and the use of fast ferrite tuners to provide millisecond timescale impedance matching. A successful test of a low power fast ferrite prototype was conducted on DIII-D.

deGrassie, J.S.; Callis, R.; Lin-Liu, Y.R.; Moeller, C..; Petty, C.C.; Phelps, D.R.; Pinsker, R.I.; Remsen, D. (General Atomics, San Diego, CA (United States)); Baity, F.W.; Hoffman, D.J.; Taylor, D.J. (Oak Ridge National Lab., TN (United States)); Arnold, W.; Martin, S. (ANT-Nachrichtentechnik GmbH, Backnang (Germany))

1992-09-01T23:59:59.000Z

153

Fast wave current drive system design for DIII-D  

SciTech Connect

DIII-D has a major effort underway to develop the physics and technology of fast wave electron heating and current drive in conjunction with electron cyclotron heating. The present system consists of a four strap antenna driven by one 2 MW transmitter in the 32--60 MHz band. Experiments have been successful in demonstrating the physics of heating and current drive. In order to validate fast wave current drive for future machines a greater power capability is necessary to drive all of the plasma current. Advanced tokamak modeling for DIII-D has indicated that this goal can be met for plasma configurations of interest (i.e. high {beta} VH-mode discharges) with 8 MW of transmitter fast wave capability. It is proposed that four transmitters drive fast wave antennas at three locations in DIII-D to provide the power for current drive and current profile modification. As the next step in acquiring this capability, two modular four strap antennas are in design and the procurement of a high power transmitter in the 30--120 MHz range is in progress. Additionally, innovations in the technology are being investigated, such as the use of a coupled combine antenna to reduce the number of required feedthroughs and to provide for parallel phase velocity variation with a relatively small change in frequency, and the use of fast ferrite tuners to provide millisecond timescale impedance matching. A successful test of a low power fast ferrite prototype was conducted on DIII-D.

deGrassie, J.S.; Callis, R.; Lin-Liu, Y.R.; Moeller, C..; Petty, C.C.; Phelps, D.R.; Pinsker, R.I.; Remsen, D. [General Atomics, San Diego, CA (United States); Baity, F.W.; Hoffman, D.J.; Taylor, D.J. [Oak Ridge National Lab., TN (United States); Arnold, W.; Martin, S. [ANT-Nachrichtentechnik GmbH, Backnang (Germany)

1992-09-01T23:59:59.000Z

154

Gas Mileage Tips - Driving More Efficiently  

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

Driving More Efficiently Drive Sensibly frustrated driver Aggressive driving (speeding, rapid acceleration and braking) wastes gas. It can lower your gas mileage by 33 percent at...

155

Methods, systems and apparatus for optimization of third harmonic current injection in a multi-phase machine  

DOE Patents (OSTI)

Methods, system and apparatus are provided for increasing voltage utilization in a five-phase vector controlled machine drive system that employs third harmonic current injection to increase torque and power output by a five-phase machine. To do so, a fundamental current angle of a fundamental current vector is optimized for each particular torque-speed of operating point of the five-phase machine.

Gallegos-Lopez, Gabriel

2012-10-02T23:59:59.000Z

156

Performance Evaluation of a Cascaded H-Bridge Multi Level Inverter Fed BLDC Motor Drive in an Electric Vehicle  

E-Print Network (OSTI)

The automobile industry is moving fast towards Electric Vehicles (EV); however this paradigm shift is currently making its smooth transition through the phase of Hybrid Electric Vehicles. There is an ever-growing need for integration of hybrid energy sources especially for vehicular applications. Different energy sources such as batteries, ultra-capacitors, fuel cells etc. are available. Usage of these varied energy sources alone or together in different combinations in automobiles requires advanced power electronic circuits and control methodologies. An exhaustive literature survey has been carried out to study the power electronic converter, switching modulation strategy to be employed and the particular machine to be used in an EV. Adequate amount of effort has been put into designing the vehicle specifications. Owing to stronger demand for higher performance and torque response in an EV, the Permanent Magnet Synchronous Machine has been favored over the traditional Induction Machine. The aim of this thesis is to demonstrate the use of a multi level inverter fed Brush Less Direct Current (BLDC) motor in a field oriented control fashion in an EV and make it follow a given drive cycle. The switching operation and control of a multi level inverter for specific power level and desired performance characteristics is investigated. The EV has been designed from scratch taking into consideration the various factors such as mass, coefficients of aerodynamic drag and air friction, tire radius etc. The design parameters are meant to meet the requirements of a commercial car. The various advantages of a multi level inverter fed PMSM have been demonstrated and an exhaustive performance evaluation has been done. The investigation is done by testing the designed system on a standard drive cycle, New York urban driving cycle. This highly transient driving cycle is particularly used because it provides rapidly changing acceleration and deceleration curves. Furthermore, the evaluation of the system under fault conditions is also done. It is demonstrated that the system is stable and has a ride-through capability under different fault conditions. The simulations have been carried out in MATLAB and Simulink, while some preliminary studies involving switching losses of the converter were done in PSIM.

Emani, Sriram S.

2010-05-01T23:59:59.000Z

157

PC-Cluster-Based Real-Time Simulation of an 8 synchronous machines network with HVDC link using  

E-Print Network (OSTI)

AbstractIn this paper, we detail the real-time simulation results of a medium-sized network composed of 8 synchronous machines and an HVDC link. The model is composed of two Kundur-like 4 machines networks connected together with a 12pulse HVDC link. The complete network is modeled with SimPowerSystems with ARTEMIS real-time plug-in and is simulated in real-time on a RT-LAB InfiniBand PC-cluster composed of 3 dual-CPU dual-core Opteron PCs. The network model includes the HVDC control and protection systems as well as the synchronous machine regulators and power stabilizers. It also includes typical fault simulation capability like HVDC DC faults, thyristor misfires and AC faults. This model is excellent to study the complex interactions between an HVDC link and AC network under normal and transient conditions. The real-time simulation is controlled and monitored with a TestDrive interface from Opal-RT. This interface, based on LabView, permits easy monitoring and control of the complete system and enables Python-based scripting for automated tests. The proposed simulator can be interfaced with external equipments and controllers by direct reconfiguration of a FPGA I/O card with Xilinx System Generator blockset.

Christian Dufour; Jean-nicolas Paquin; Vincent Lapointe; Jean Blanger; Loic Schoen

2007-01-01T23:59:59.000Z

158

Coded output support vector machine  

Science Conference Proceedings (OSTI)

The authors propose a coded output support vector machine (COSVM) by introducing the idea of information coding to solve multi-class classification problems for large-scale datasets. The COSVM is built based on the support vector regression (SVR) machine ... Keywords: coded output, multi-class classification, number system, parallel implementation, support vector machine (SVM)

Tao Ye; Xuefeng Zhu

2012-07-01T23:59:59.000Z

159

Data envelopment analysis classification machine  

Science Conference Proceedings (OSTI)

This paper establishes the equivalent relationship between the data classification machine and the data envelopment analysis (DEA) model, and thus build up a DEA based classification machine. A data is characterized by a set of values. Without loss of ... Keywords: Classification machine, Data envelopment analysis, Preference cone

Hong Yan; Quanling Wei

2011-11-01T23:59:59.000Z

160

NREL: Vehicles and Fuels Research - DRIVE: Drive-Cycle Rapid...  

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

representative drive cycles from raw data, the tool is capable of comparing vehicle operation to industry standard test cycles and can even select a representative...

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


161

International Business Machines Corporation  

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

Business Machines Corporation Business Machines Corporation Thomas J. Watson Research Center 1101 Kitchawan Road, NY 10598 Office of the Assistant General Counsel for Technology Transfer and Intellectual Property U.S. Department of Energy 1000 Independence Ave, SW, Washington DC 20585 ATTN: TECHNOLOGY TRANSFER QUESTIONS Sent electronically to GC-62@hq.doe.gov RE: Questions Concerning Technology Transfer Practices at DOE Laboratories Federal Register, Vol. 73, No. 229 Dear Mr. Gottlieb: IBM Corporation appreciates the opportunity to provide comments in response to the Department of Energy notice of inquiry. DOE Laboratories are a fundamental resource to government, industry, academia and the economy as a whole. All can benefit from efficient contracting processes and

162

QUICK RELEASABLE DRIVE  

DOE Patents (OSTI)

A quick releasable mechanical drive system suitable for use in a nuclear reactor is described. A small reversible motor positions a control rod by means of a worm and gear speed reducer, a magnetic torque clutch, and a bell crank. As the control rod is raised to the operating position, a heavy coil spring is compressed. In the event of an emergency indicated by either a''scram'' signal or a power failure, the current to the magnetic clutch is cut off, thereby freeing the coil spring and the bell crank positioner from the motor and speed reduction gearing. The coil spring will immediately act upon the bell crank to cause the insertion of the control rod. This arrangement will allow the slow, accurate positioning of the control rod during reactor operation, while providing an independent force to rapidly insert the rod in the event of an emergency.

Dickson, J.J.

1958-07-01T23:59:59.000Z

163

Hydrogen--electric power drives  

SciTech Connect

Hydrogen--electric power drives would consist of most or all of these: chilled hydrogen gas tank, liquid oxygen tank, a bank of fuel cells, dc/ac inverter, ac drive motors, solid state ac speed control, dc sputter-ion vacuum pumps, steam turbine generator set and steam condenser. Each component is described. Optional uses of low pressure extraction steam and warm condensate are listed. Power drive applications are listed. Impact on public utilities, fuel suppliers, and users is discussed.

Hall, F.F.

1978-10-01T23:59:59.000Z

164

Adjustable speed drives: Applications and R&D needs  

SciTech Connect

The largest opportunity for the growth of adjustable speed drives (ASDs) during the next 5-6 years is in pump, fan and compressor (PFC) applications where a constant, fixed speed operation is converted to adjustable speed in order to realize energy savings. Inverter supplied induction motors are and will continue to be predominately used in these applications. Over the long term (10-15 years), the greatest ASD growth is expected in large volume consumer applications: first in hybrid electric vehicles (EVs) and in residential heating, ventilation and air-conditioning (HVAC). Both induction and a variety of AC Permanent Magnet motors are expected to be the dominant technology in this new field. The traditional ASD applications in industries which require adjustable speed (such as machine tools, robotics, steel rolling, extruders, paper mill finishing lines, etc.) offer a relatively limited potential for above average ASD growth since most of these applications have already converted to electronic speed control. As a result, ASD growth in this sector will essentially track the growth of the corresponding industries. If realized, both short and long term ASD growth opportunities will result in significant advancements of ASD technology, which will then substantially affect all other, more fragmented, ASD applications. In fact, any single large volume ASD application will serve as a catalyst for improving ASD characteristics in all other ASD applications with the same voltage rating. ASD cost and reliability (defined in the context of application compatibility) are the two most important factors which will determine whether the ASD growth opportunities are realized. Conversely, any technological improvement which carries a cost increase will be restricted to niche applications, at best. Consequently, future R & D efforts should be directed to secure reduction in ASD cost and improvement in ASD reliability. A specific action plan is outlined in this report.

Stefanovic, V.R.

1995-09-01T23:59:59.000Z

165

Flotation machine and process for removing impurities from coals  

DOE Patents (OSTI)

The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of microagglomerates are washed and separated from the coal.

Szymocha, Kazimierz (Edmonton, CA); Ignasiak, Boleslaw (Edmonton, CA); Pawlak, Wanda (Edmonton, CA); Kulik, Conrad (Newark, CA); Lebowitz, Howard E. (Mountain View, CA)

1997-01-01T23:59:59.000Z

166

Flotation machine and process for removing impurities from coals  

DOE Patents (OSTI)

The present invention is directed to a type of flotation machine that combines three separate operations in a single unit. The flotation machine is a hydraulic separator that is capable of reducing the pyrite and other mineral matter content of a coal. When the hydraulic separator is used with a flotation system, the pyrite and certain other minerals particles that may have been entrained by hydrodynamic forces associated with conventional flotation machines and/or by the attachment forces associated with the formation of microagglomerates are washed and separated from the coal.

Szymocha, Kazimierz (Edmonton, CA); Ignasiak, Boleslaw (Edmonton, CA); Pawlak, Wanda (Edmonton, CA); Kulik, Conrad (Newark, CA); Lebowitz, Howard E. (Mountain View, CA)

1995-01-01T23:59:59.000Z

167

Direct fired heat exchanger  

DOE Patents (OSTI)

A gas-to-liquid heat exchanger system which transfers heat from a gas, generally the combustion gas of a direct-fired generator of an absorption machine, to a liquid, generally an absorbent solution. The heat exchanger system is in a counterflow fluid arrangement which creates a more efficient heat transfer.

Reimann, Robert C. (Lafayette, NY); Root, Richard A. (Spokane, WA)

1986-01-01T23:59:59.000Z

168

Intelligent Energy Management Based on the Driving Cycle Sensitivity Identification Using SVM  

Science Conference Proceedings (OSTI)

Hybrid Electric Vehicles (HEV) offer the ability to significantly reduce fuel consumptions and emission. Management of energy is one of essential elements in the implementation of hybrid electric vehicles. Engine and motor should satisfy the drivers ... Keywords: driving cycle sensitivity, support vector machine, control strategy, genetic

Zhang Liang; Zhang Xin; Tian Yi; Zhang Xinn

2009-12-01T23:59:59.000Z

169

Automatic tool path generation for finish machining  

SciTech Connect

A system for automatic tool path generation was developed at Sandia National Laboratories for finish machining operations. The system consists of a commercially available 5-axis milling machine controlled by Sandia developed software. This system was used to remove overspray on cast turbine blades. A laser-based, structured-light sensor, mounted on a tool holder, is used to collect 3D data points around the surface of the turbine blade. Using the digitized model of the blade, a tool path is generated which will drive a 0.375 inch diameter CBN grinding pin around the tip of the blade. A fuzzified digital filter was developed to properly eliminate false sensor readings caused by burrs, holes and overspray. The digital filter was found to successfully generate the correct tool path for a blade with intentionally scanned holes and defects. The fuzzified filter improved the computation efficiency by a factor of 25. For application to general parts, an adaptive scanning algorithm was developed and presented with simulation results. A right pyramid and an ellipsoid were scanned successfully with the adaptive algorithm.

Kwok, Kwan S.; Loucks, C.S.; Driessen, B.J.

1997-03-01T23:59:59.000Z

170

Machine augmented composite materials for damping purposes  

E-Print Network (OSTI)

In this study the energy dissipation performance of machine augmented composite (MAC) materials is investigated. MAC materials are formed by inserting simple machines into a matrix material. In this work the machines take the form of fluid filled tubes, and the tube cross-sectional geometry induces fluid flow when it is deformed in its plane. This flow dissipates mechanical energy, and thus provides the composite material with attractive damping properties. The objective of this study is to gain insight into the geometry, the material property combinations, and the boundary conditions that are effective in producing high damping MAC materials. Particular attention is given to tube geometry and to dimensionless parameters that govern the energy dissipation efficiency of a MAC lamina. An important dimensionless parameter is the ratio of solid elastic moduli to the product of the driving frequency and the fluid dynamic viscosity. This is a measure of the ratio of elastic forces in the solid material to the viscous forces in the fluid material that makes up a MAC lamina. Governing equations and simulation methods are discussed. Simplified equations are derived to predict the pressure generated when a tube/matrix cell is squeezed with zero pressure end conditions. Transient, three dimensional finite element models are also used to predict the performance of the damping MAC materials with zero pressure at the ends of the tubes. For the geometry and material properties considered, the highest energy dissipation efficiency predicted by these models is approximately 0.8 out of a maximum of 1.0.

McCutcheon, David Matthew

2004-12-01T23:59:59.000Z

171

Machine Learning for Global Optimization  

E-Print Network (OSTI)

approach for global optimization in which machine learning is used to predict ..... In Figure 1 we show the level curves of the 2dimensional Rastrigin function.

172

ARM - SGP Rural Driving Hazards  

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

Rural Driving Hazards Rural Driving Hazards SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on unpaved, dirt and gravel, roads. Visitors should be aware of the driving hazards this presents by taking the following precautions: Proceed cautiously: Many rural roads have unmarked and blind intersections. Slow down: Sanded and gravel raods can cause a vehicle to swerve. Maintain a safe following distance: During the dry season, vehicles

173

Upgrading coal plant damper drives  

Science Conference Proceedings (OSTI)

The replacement of damper drives on two coal-fired units at the James H. Miller Jr. electric generating plant by Intelligent Contrac electric rotary actuators is discussed. 2 figs.

Hood, N.R.; Simmons, K. [Alamaba Power (United States)

2009-11-15T23:59:59.000Z

174

Cleaning of Free Machining Brass  

Science Conference Proceedings (OSTI)

We have investigated four brightening treatments proposed by two cleaning vendors for cleaning free machining brass. The experimental results showed that none of the proposed brightening treatments passed the swipe test. Thus, we maintain the recommendation of not using the brightening process in the cleaning of free machining brass for NIF application.

Shen, T

2005-12-29T23:59:59.000Z

175

Knowledge representation and machine translation  

Science Conference Proceedings (OSTI)

This paper describes a new knowledge representation called "frame knowledge representation-0" (FKR-0), and an experimental machine translation system named ATLAS/I which uses FKR-0.The purpose of FKR-0 is to stored information required for machine translation ...

Susumu Sawai; Hiromichi Fukushima; Masakatsu Sugimoto; Naoya Ukai

1982-07-01T23:59:59.000Z

176

MSc Design of Rotating Machines  

E-Print Network (OSTI)

design management and intellectual skills of communication in a group working environment. Focus on your interests The Machine Design specialism aims to provide students with a greater degree of training of stress analysis, machine dynamics, transmissions, computer aided engineering, and project management

177

Homopolar machine for reversible energy storage and transfer systems  

DOE Patents (OSTI)

A homopolar machine designed to operate as a generator and motor in reversibly storing and transferring energy between the machine and a magnetic load coil for a thermo-nuclear reactor. The machine rotor comprises hollow thin-walled cylinders or sleeves which form the basis of the system by utilizing substantially all of the rotor mass as a conductor thus making it possible to transfer substantially all the rotor kinetic energy electrically to the load coil in a highly economical and efficient manner. The rotor is divided into multiple separate cylinders or sleeves of modular design, connected in series and arranged to rotate in opposite directions but maintain the supply of current in a single direction to the machine terminals. A stator concentrically disposed around the sleeves consists of a hollow cylinder having a number of excitation coils each located radially outward from the ends of adjacent sleeves. Current collected at an end of each sleeve by sleeve slip rings and brushes is transferred through terminals to the magnetic load coil. Thereafter, electrical energy returned from the coil then flows through the machine which causes the sleeves to motor up to the desired speed in preparation for repetition of the cycle. To eliminate drag on the rotor between current pulses, the brush rigging is designed to lift brushes from all slip rings in the machine.

Stillwagon, Roy E. (Ruffsdale, PA)

1981-01-01T23:59:59.000Z

178

Homopolar machine for reversible energy storage and transfer systems  

DOE Patents (OSTI)

A homopolar machine designed to operate as a generator and motor in reversibly storing and transferring energy between the machine and a magnetic load coil for a thermo-nuclear reactor. The machine rotor comprises hollow thin-walled cylinders or sleeves which form the basis of the system by utilizing substantially all of the rotor mass as a conductor thus making it possible to transfer substantially all the rotor kinetic energy electrically to the load coil in a highly economical and efficient manner. The rotor is divided into multiple separate cylinders or sleeves of modular design, connected in series and arranged to rotate in opposite directions but maintain the supply of current in a single direction to the machine terminals. A stator concentrically disposed around the sleeves consists of a hollow cylinder having a number of excitation coils each located radially outward from the ends of adjacent sleeves. Current collected at an end of each sleeve by sleeve slip rings and brushes is transferred through terminals to the magnetic load coil. Thereafter, electrical energy returned from the coil then flows through the machine which causes the sleeves to motor up to the desired speed in preparation for repetition of the cycle. To eliminate drag on the rotor between current pulses, the brush rigging is designed to lift brushes from all slip rings in the machine.

Stillwagon, Roy E. (South Huntington Township, Huntington County, PA)

1978-01-01T23:59:59.000Z

179

Mechanical drive for blood pump  

DOE Patents (OSTI)

This patent relates to a highly efficient blood pump to be used as a replacement for a ventricle of the human heart to restore people disabled by heart disease. The mechanical drive of the present invention is designed to operate in conjunction with a thermoelectric converter power source. The mechanical drive system essentially converts the output of a rotary power into pulsatile motion so that the power demand from the thermoelectric converter remains essentially constant while the blood pump output is pulsed. (auth)

Bifano, N.J.; Pouchot, W.D.

1975-07-29T23:59:59.000Z

180

MHK Technologies/Anaconda bulge tube drives turbine | Open Energy  

Open Energy Info (EERE)

Anaconda bulge tube drives turbine Anaconda bulge tube drives turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Anaconda bulge tube drives turbine.jpg Technology Profile Primary Organization Checkmate SeaEnergy Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description Anaconda uses a large water filled distensible rubber tube floating just beneath the ocean surface and oriented parallel to wave direction As a wave passes the bulge tube is lifted with the surrounding water and this causes a bulge wave to be excited which then passes down the tubes walls gathering energy from the ocean wave as it passes By matching the speed of the bulge wave to that of the sea wave resonance is achieved and high power capture becomes possible The bulge waves are then used to drive a turbine generator located at the stern of the device

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


181

Cone Drive Operations Inc | Open Energy Information  

Open Energy Info (EERE)

worm gear technology. The company supplies azimuth and elevation drives for solar tracking applications. References Cone Drive Operations Inc1 LinkedIn Connections CrunchBase...

182

Electric vehicle drive train with contactor protection ...  

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the ...

183

Driving Green com | Open Energy Information  

Open Energy Info (EERE)

| Sign Up Search Page Edit with form History Facebook icon Twitter icon Driving Green com Jump to: navigation, search Name Driving Green.com Place Melbourne, Florida Zip...

184

Environmental constituents of Electrical Discharge Machining  

E-Print Network (OSTI)

Electrical Discharge Machining (EDM) is a non-traditional process that uses no mechanical forces to machine metals. It is extremely useful in machining hard materials. With the advantages EDM has to offer and its presence ...

Cho, Margaret H. (Margaret Hyunjoo), 1982-

2004-01-01T23:59:59.000Z

185

Heavy Machine Shop | Central Fabrication Services | Brookhaven...  

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

Heavy Machine Shop Heavy Machine Shop The Heavy Machine Shop facility is located in building 479, and may be accessed by the main door on the north face or front of the building....

186

PM Motor Parametric Design Analyses for Hybrid Electric Vehicle Traction Drive Application: Interim Report  

DOE Green Energy (OSTI)

The Department of Energy's (DOE) Office of FreedomCAR (Cooperative Automotive Research) and Vehicle Technologies has a strong interest in making rapid progress in permanent magnet (PM) machine development. The program is directing various technology development projects that will advance the technology and lead to request for proposals (RFP) for manufacturer prototypes. This aggressive approach is possible because the technology is clearly within reach and the approach is deemed essential, based on strong market demand, escalating fuel prices, and competitive considerations. In response, this study began parallel development paths that included a literature search/review, development and utilization of multiple parametric models to determine the effects of design parameters, verification of the modeling methodology, development of an interior PM (IPM) machine baseline design, development of alternative machine baseline designs, and cost analyses for several candidate machines. This interim progress report summarizes the results of these activities as of June 2004. This report provides background and summary information for recent machine parametric studies and testing programs that demonstrate both the potential capabilities and technical limitations of brushless PM machines (axial gap and radial gap), the IPM machine, the surface-mount PM machines (interior or exterior rotor), induction machines, and switched reluctance machines. The FreedomCAR program, while acknowledging the progress made by Oak Ridge National Laboratory, Delphi, Delco-Remy International, and others in these programs, has redirected efforts toward a ''short path'' to a marketable and competitive PM motor for hybrid electric vehicle traction applications. The program has developed a set of performance targets for the type of traction machine desired. The short-path approach entails a comprehensive design effort focusing on the IPM machine and meeting the performance targets. The selection of the IPM machine reflects industry's confidence in this market-proven design that exhibits a power density surpassed by no other machine design.

Staunton, R.H.

2004-08-11T23:59:59.000Z

187

Modelling, simulation and analysis of low-cost direct torque control of PMSM using hall-effect sensors  

E-Print Network (OSTI)

This thesis focuses on the development of a novel Direct Torque Control (DTC) scheme for permanent magnet (PM) synchronous motors (surface and interior types) in the constant torque region with the help of cost-effective hall-effect sensors. This method requires no DC-link sensing, which is a mandatory matter in the conventional DTC drives, therefore it reduces the cost of a conventional DTC of a permanent magnet (PM) synchronous motor and also removes common problems including; resistance change effect, low speed and integration drift. Conventional DTC drives require at least one DC-link voltage sensor (or two on the motor terminals) and two current sensors because of the necessary estimation of position, speed, torque, and stator flux in the stationary reference frame. Unlike the conventional DTC drive, the proposed method uses the rotor reference frame because the rotor position is provided by the three hall-effect sensors and does not require expensive voltage sensors. Moreover, the proposed algorithm takes the acceleration and deceleration of the motor and torque disturbances into account to improve the speed and torque responses. The basic theory of operation for the proposed topology is presented. A mathematical model for the proposed DTC of the PMSM topology is developed. A simulation program written in MATLAB/SIMULINK?® is used to verify the basic operation (performance) of the proposed topology. The mathematical model is capable of simulating the steady-state, as well as dynamic response even under heavy load conditions (e.g. transient load torque at ramp up). It is believed that the proposed system offers a reliable and low-cost solution for the emerging market of DTC for PMSM drives. Finally the proposed drive, considering the constant torque region operation, is applied to the agitation part of a laundry washing machine (operating in constant torque region) for speed performance comparison with the current low-cost agitation cycle speed control technique used by washing machine companies around the world.

Ozturk, Salih Baris

2005-12-01T23:59:59.000Z

188

What drives global ICT adoption? Analysis and research directions  

Science Conference Proceedings (OSTI)

Information and communication technology (ICT) adoption is increasing globally and offers unique opportunities for information systems (IS) and electronic commerce researchers to undertake research that will have an impact. The purpose of this article ... Keywords: Adoption, Behavioral explanations, Diffusion, Economic explanations, Global perspective, ICT, Policy issues, Technology adoption

David M. Weber; Robert J. Kauffman

2011-11-01T23:59:59.000Z

189

Directional Coarsening of Nickel Based Superalloys: Driving Force ...  

Science Conference Proceedings (OSTI)

Since plastic deformation is driven by the elastic energy stored in the .... channels , o, is the applied stress intensity, E, is the .... commercial superalloys [18], when the Orowan process .... dislocation building and contributing to a back-stress for.

190

Direct-drive field actuator motors - Energy Innovation Portal  

Solar Photovoltaic; ... actuator which changes in dimension responsive to application of an energy ... by the National Aeronautics and Space ...

191

Laser IFE Direct Drive Chamber Concepts with Magnetic Intervention  

Science Conference Proceedings (OSTI)

High Average Power Laser and Other IFE R&D / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1)

A. R. Raffray et al.

192

Direct Drive Wave Energy Buoy Intermediate scale experiment  

SciTech Connect

Columbia Power Technologies deployed a scaled prototype wave energy converter (WEC) in the Puget Sound in February 2011. Other than a brief period (10 days) in which the WEC was removed for repair, it was in the water from Feb. 15, 2011 until Mar. 21, 2012. The SeaRay, as this WEC is known, consists of three rigid bodies which are constrained to move in a total of eight degrees of freedom (DOF). The SeaRay is kept on station with a spread, three-point mooring system. This prototype WEC is heavily instrumented, including but not limited to torque transducers and encoders reporting generator torque applied to and relative pitch of the floats, an inertial measurement unit (IMU) reporting translational acceleration and rotational position of the spar/nacelle, a GPS sensor reporting position, load cells reporting mooring loads at the WEC connection points and a number of strain gauges embedded in the fiberglass reinforced plastic (FRP) hull. Additionally, wave and current data are collected using an Acoustic Wave And Current Profiler (AWAC), allowing performance and design data to be correlated to environmental input conditions. This data quality controlled, processed and analyzed is used to characterize the metocean conditions (i.e. sea states). The WEC response will be correlated to the metocean conditions. These results will primarily be used to validate numerical models. The validated numerical models will be used optimize the commercial scale WEC and inform the design process. This document details the SeaRay experiment, including the quality control, processing and subsequent analysis of the data. Furthermore, the methodology and the results of numerical model validation will be described.

Rhinefrank, Kenneth E. [Columbia Power Technologies, Inc.; Lenee-Bluhm, Pukha [Columbia Power Technologies, Inc.; Prudell, Joseph H.; Schacher, Alphonse A. [Columbia Power Technologies, Inc.; Hammagren, Erik J.; Zhang, Zhe [Columbia Power Technologies, Inc.

2013-07-29T23:59:59.000Z

193

Homodyne target tracking for direct drive laser inertial fusion  

E-Print Network (OSTI)

systems use a single frequency of light in both reference and measurement legs of the interferometer and can operate independent of laserLasers Office: 408-546-4546 Mobile: 408-506-7504 Email correspondence with Hovemere Ltd, makers of precise wavelength measurement systems

Spalding, Jon David

2009-01-01T23:59:59.000Z

194

Longitudinal Tracking of Direct Drive Inertial Fusion Targets  

Science Conference Proceedings (OSTI)

Technical Paper / The Technology of Fusion Energy - Inertial Fusion Technology: Targets and Chambers

J. D. Spalding; L. C. Carlson; M. S. Tillack; N. B. Alexander; D. T. Goodin; R. W. Petzoldt

195

Machine Learning Benchmarks and Random Forest Regression  

E-Print Network (OSTI)

Machine Learning Benchmarks and Random Forest Regressionerror on a suite of benchmark datasets. As the basethe Machine Learning Benchmark Problems package; see http://

Segal, Mark R

2004-01-01T23:59:59.000Z

196

Free Machining Brasses with Minimized Lead Content  

Science Conference Proceedings (OSTI)

Abstract Scope, Article describes the role of lead in free machining brass and ... Similar legislative acts take care of lead content in free machined brass.

197

Ma'aden Open Mould Casting Machines  

Science Conference Proceedings (OSTI)

The paper will describe Ma'aden experience in ingot casting machines: commissioning and start-up, the challenges faced specially with De-molding machines,...

198

Optimal Design of Electrical Machines: Mathematical Programming ...  

E-Print Network (OSTI)

for the same problem of the design of an electrical machine without slot. ... tion, inverse problem, design, electrical machine ..... trade-off situation arises.

199

Measurement Science for Smart Machine Tools  

Science Conference Proceedings (OSTI)

... ASME B5.59-2, "Information Technology for Machine ToolsPart 2: Data Specification for Properties of Machine tools for Milling and Turning,"and ...

2012-12-21T23:59:59.000Z

200

Akrong Machine Services | Open Energy Information  

Open Energy Info (EERE)

Machine Services Jump to: navigation, search Name Akron Machine Services Address 17 w. Rosewood Ave Place Akron, Ohio Zip 44301 Sector Carbon Product Manufacturing Phone...

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


201

Slide system for machine tools  

DOE Patents (OSTI)

The present invention relates to a machine tool which permits the machining of nonaxisymmetric surfaces on a workpiece while rotating the workpiece about a central axis of rotation. The machine tool comprises a conventional two-slide system (X-Y) with one of these slides being provided with a relatively short travel high-speed auxiliary slide which carries the material-removing tool. The auxiliary slide is synchronized with the spindle speed and the position of the other two slides and provides a high-speed reciprocating motion required for the displacement of the cutting tool for generating a nonaxisymmetric surface at a selected location on the workpiece.

Douglass, S.S.; Green, W.L.

1980-06-12T23:59:59.000Z

202

Distribution Drive | Open Energy Information  

Open Energy Info (EERE)

Drive Drive Jump to: navigation, search Name Distribution Drive Place Dallas, Texas Zip 75205 Product Biodiesel fuel distributor. Coordinates 32.778155°, -96.795404° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.778155,"lon":-96.795404,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

203

Recent advances in kernel machines  

Science Conference Proceedings (OSTI)

This talk will review recent advances in the kernel methods focusing on support vector machines (SVM) for pattern recognition. Topics discussed include the kernel design issue through the multi kernel approach and the optimization issue with emphasis ...

Stphane Canu

2010-11-01T23:59:59.000Z

204

ASC_machines_cielo_2  

National Nuclear Security Administration (NNSA)

ASC 1 Top500 winners ASC supercomputers ASC future supercomputers Leading High-Performance Computing ASCI Red * First sustained teraFLOPS machine * 1 teraFLOPS * 1 TOP500 6...

205

Drive reconfiguration mechanism for tracked robotic vehicle  

SciTech Connect

Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

Willis, W. David (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

206

To Design, Build and Test a Wireless Measurement System for Machine Rotor  

Science Conference Proceedings (OSTI)

A wireless measurement system was designed to detect the rotor current of an induction machine. The reason of using wireless technique instead of wire is that it is difficult to connect measured components with wire directly from the rotor which is running ... Keywords: wireless measurement system, machine rotor

Jieyin Zhang; Minxia Zhang

2009-03-01T23:59:59.000Z

207

Resource Letter: Bio-molecular Nano-machines: where Physics, Chemistry, Biology and Technology meet  

E-Print Network (OSTI)

Cell is the structural and functional unit of life. This Resource Letter serves as a guide to the literature on nano-machines which drive not only intracellular movements, but also motility of the cell. These machines are usually proteins or macromolecular assemblies which require appropriate fuel for their operations. Although, traditionally, these machines were subjects of investigation in biology and biochemistry, increasing use of the concepts and techniques of physics in recent years have contributed to the quantitative understanding of the fundamental principles underlying their operational mechanisms. The possibility of exploiting these principles for the design and control of artificial nano-machines has opened up a new frontier in the bottom-up approach to nano-technology.

Debashish Chowdhury

2008-07-17T23:59:59.000Z

208

Optimization Online - Optimal Design of Electrical Machines ...  

E-Print Network (OSTI)

Jun 8, 2011 ... Optimal Design of Electrical Machines: Mathematical Programming ... Science and Engineering (Multidisciplinary Design Optimization ).

209

Water drives peptide conformational transitions  

E-Print Network (OSTI)

Transitions between metastable conformations of a dipeptide are investigated using classical molecular dynamics simulation with explicit water molecules. The distribution of the surrounding water at different moments before the transitions and the dynamical correlations of water with the peptide's configurational motions indicate that water is the main driving force of the conformational changes.

Nerukh, Dmitry

2011-01-01T23:59:59.000Z

210

Anomalous-viscosity current drive  

DOE Patents (OSTI)

The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

Stix, T.H.; Ono, M.

1986-04-25T23:59:59.000Z

211

Interpolator for numerically controlled machine tools  

DOE Patents (OSTI)

A digital differential analyzer circuit is provided that depending on the embodiment chosen can carry out linear, parabolic, circular or cubic interpolation. In the embodiment for parabolic interpolations, the circuit provides pulse trains for the X and Y slide motors of a two-axis machine to effect tool motion along a parabolic path. The pulse trains are generated by the circuit in such a way that parabolic tool motion is obtained from information contained in only one block of binary input data. A part contour may be approximated by one or more parabolic arcs. Acceleration and initial velocity values from a data block are set in fixed bit size registers for each axis separately but simultaneously and the values are integrated to obtain the movement along the respective axis as a function of time. Integration is performed by continual addition at a specified rate of an integrand value stored in one register to the remainder temporarily stored in another identical size register. Overflows from the addition process are indicative of the integral. The overflow output pulses from the second integration may be applied to motors which position the respective machine slides according to a parabolic motion in time to produce a parabolic machine tool motion in space. An additional register for each axis is provided in the circuit to allow "floating" of the radix points of the integrand registers and the velocity increment to improve position accuracy and to reduce errors encountered when the acceleration integrand magnitudes are small when compared to the velocity integrands. A divider circuit is provided in the output of the circuit to smooth the output pulse spacing and prevent motor stall, because the overflow pulses produced in the binary addition process are spaced unevenly in time. The divider has the effect of passing only every nth motor drive pulse, with n being specifiable. The circuit inputs (integrands, rates, etc.) are scaled to give exactly n times the desired number of pulses out, in order to compensate for the divider.

Bowers, Gary L. (Clinton, TN); Davenport, Clyde M. (Oak Ridge, TN); Stephens, Albert E. (Knoxville, TN)

1976-01-01T23:59:59.000Z

212

Design studies of mirror machine reactors  

SciTech Connect

An overview is presented of a mirror fusion reactor design study. The general methodology used in the study is discussed, the reactor is described, and some design alternatives to the present approach are enumerated. The system chosen for this design study is a mirror machine with direct conversion using D- T fuel. The nominal power output is 200 MW. The coil geometry is the Yin Yang, minimum B with a vacuum mirror ratio of 3. The coil is of particular utility because of its simple conductor shapes and because the two separate conductors, by proper B-field biasing, allow the charged particles to escape preferentially through one mirror only and through a relatively small window'' of that mirror. This is necessary for direct converter economy. (auth)

Werner, R.W.; Carlson, G.A.; Hovingh, J.; Lee, J.D.; Peterson, M.A.

1973-12-01T23:59:59.000Z

213

Robust Generator System Using PM Assisted Synchronous Reluctance Generator with Current-fed Drive  

E-Print Network (OSTI)

The growth of embedded generation and portable electrical installations has led to an increased demand for low cost, flexible and reliable generator systems for military and commercial applications. An interior permanent magnet (IPM) machine has high power density due to its reluctance torque and magnetic torque components so it can produce a large constant power-speed range. However, an IPM machine needs demagnetizing current at high-speed during the flux-weakening region and thus develops an inverter shutdown problem in an uncontrolled generator mode operation. In order to overcome the disadvantages of the IPM machine, the permanent magnet assisted synchronous reluctance generator (PMa-SynRG) can be a good solution for low cost, high efficiency reliable generator systems. A PMa-SynRG can produce a high efficiency drive by utilizing the proper amount of magnet and reluctance torque. This work proposes a PMa-SynRG with two flux barriers and permanent magnets embedded in the second layer of the rotor. A neodymium magnet (NdFeB) was used as permanent magnets in the rotor to prevent demagnetization. Finding the minimum amount of magnet is one of the goals of the optimization process. The objectives of this work are to build an optimal design for the 3kW generator and an advanced power electronics converter for the PMa-SynRG drive system. In order to find the optimized 3kW machine, a Lumped Parameter Model (LPM) was used to achieve fast computation, and Differential Evolution Strategy (DES) was used to embed the LPM in an efficient numerical optimization routine to identify optimum designs. Finite Element Analysis (FEA) was used for test performance of optimum designs. On the basis of differences between LPM and FEA, model predictions were used to fine tune the LPM model. For new optimum design converges, numerical optimizations and iterations were performed to produce LPM and FEA predictions. For the drive system, the thyristor based, current-fed drive is much simpler and has lower power losses compared to the pulse width modulation (PWM) drive. Eliminating the requirement for self-controlled switches is a distinct advantage for lower cost. Another feature of the developed current-fed drive is its inherent capability to provide generating action by making the PMa-SynRG operates as a generator, rectifying the phase voltages by means of the three-phase rectifier and feeding the power into the load. These features make the current-fed drive a good candidate for driving any type of synchronous generators including the proposed PMa-SynRG.

Baek, Jeihoon

2009-12-01T23:59:59.000Z

214

Radiator debris removing apparatus and work machine using same  

DOE Patents (OSTI)

A radiator assembly includes a finned radiator core and a debris removing apparatus having a compressed air inlet and at least one compressed air outlet configured to direct compressed air through the radiator core. A work machine such as a wheel loader includes a radiator and a debris removing apparatus coupled with on-board compressed air and having at least one pressurized gas outlet configured to direct a gas toward the face of the radiator.

Martin, Kevin L. (Washburn, IL); Elliott, Dwight E. (Chillicothe, IL)

2008-09-02T23:59:59.000Z

215

System analysis approach for the identification of factors driving crude oil prices  

Science Conference Proceedings (OSTI)

A system analysis approach is proposed to identify the main factors driving international crude oil prices by integrating a partial least squares model, an vector error correction model and the directed acyclic graph method. The different mechanisms ... Keywords: Crude oil price, DAG, Driving factors, Financial crisis, VECM

Qiang Ji

2012-11-01T23:59:59.000Z

216

Real-time rotor bar current measurements using bluetooth technology for a brushless doubly-fed machine (BDFM  

E-Print Network (OSTI)

The Brushless Doubly Fed Machine (BDFM) shows economic promise as a variable speed drive or generator. The optimization of the machine and model-based control strategies both rely on machine models, and the experimental verification of these models. To date, dynamic measurements of rotor quantities have not been possible. The authors present a system of measuring rotor bar currents in real time using a Rogowski coil to detect the current and recently developed Bluetooth wireless technology to transmit the data from the moving rotor to a computer. Experimental data collected from the system are included. 1.

P. C. Roberts; E. Abdi Jalebi; R. A. Mcmahon; T. J. Flack

2004-01-01T23:59:59.000Z

217

Control coil arrangement for a rotating machine rotor  

DOE Patents (OSTI)

A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the machine rotor for producing an axially directed flux in the active portion so as to provide planar axial control at single or multiple locations for rotor balance, levitation, centering, torque and thrust action. Permanent magnets can be used to produce an axial bias magnetic field. The rotor can include magnetic disks disposed in opposed, facing relation to the coil configuration.

Shah, Manoj R. (Latham, NY); Lewandowsk, Chad R. (Amsterdam, NY)

2001-07-31T23:59:59.000Z

218

Control Coil Arrangement for a Rotating Machine Rotor  

DOE Patents (OSTI)

A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the machine rotor for producing an axially directed flux in the active portion so as to provide planar axial control at single or multiple locations for rotor balance, levitation, centering, torque and thrust action. Permanent magnets can be used to produce an axial bias magnetic field. The rotor can include magnetic disks disposed in opposed, facing relation to the coil configuration.

Shah, Manoj R.; Lewandowski, Chad R.

1999-05-05T23:59:59.000Z

219

US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan  

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

Partnership Plan Partnership Plan March 2013 U.S. DRIVE Partnership Plan Table of Contents Foreword ....................................................................................................................................................... 2 Definition ...................................................................................................................................................... 3 Partners ......................................................................................................................................................... 3 U.S. DRIVE Vision ........................................................................................................................................... 3 U.S. DRIVE Mission ........................................................................................................................................ 4

220

Magnetically Coupled Adjustable Speed Drive Systems  

DOE Green Energy (OSTI)

Adjustable speed drive (ASD) technologies have the ability to precisely control motor sytems output and produce a numbr of benefits including energy and demand savings. This report examines the performance and cost effectiveness of a specific class of ASDs called magnetically-coupled adjustable speed drives (MC-ASD) which use the strength of a magnetic field to control the amount of torque transferred between motor and drive shaft. The MagnaDrive Adjustable Speed Coupling System uses fixed rare-earth magnets and varies the distance between rotating plates in the assembly. the PAYBACK Variable Speed Drive uses an electromagnet to control the speed of the drive

Chvala, William D.; Winiarski, David W.

2002-08-18T23:59:59.000Z

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


221

Alpha Channeling in Mirror Machines  

SciTech Connect

Because of their engineering simplicity, high-?, and steady-state operation, mirror machines and related open-trap machines such as gas dynamic traps, are an attractive concept for achieving controlled nuclear fusion. In these open-trap machines, the confinement occurs by means of magnetic mirroring, without the magnetic field lines closing upon themselves within the region of particle confinement. Unfortunately, these concepts have not achieved to date very spectacular laboratory results, and their reactor prospects are dimmed by the prospect of a low Q-factor, the ratio of fusion power produced to auxiliary power. Nonetheless, because of its engineering promise, over the years numerous improvements have been proposed to enhance the reactor prospects of mirror fusion, such as tandem designs, end-plugging, and electric potential barriers.

Fisch N.J.

2005-10-19T23:59:59.000Z

222

HybriDrive Propulsion System  

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

HybriDrive HybriDrive ® Propulsion System Cleaner, smarter power for transit DOE/FTA Fuel Cell Research Priorities Workshop Washington, DC 7 June 2010 Bart W. Mancini Sr. Principal Systems Engineer BAE Systems Ph: 607-770-4103 bart.mancini@baesystems.com 2 Overview 3 * BAE Systems FC Experience / Deployments * Technology gaps/barriers to full commercialization of fuel cell buses * Well-to-wheels energy efficiency and emissions * Cost metrics * Bus integration issues * Fuel cell bus R&D needs * Future plans BAE Systems FC Experience / Deployments 4 * 1998 - Georgetown/FTA/DOE Fuel Cell Bus #1 (still serviceable) * UTC 100 kW Phosphoric Acid FC using on-board Methanol Reformate, Hybrid propulsion & Electric accessories * 2000 - Georgetown/FTA/DOE Fuel Cell Bus #2 (retired) *

223

Granular gases under extreme driving  

E-Print Network (OSTI)

We study inelastic gases in two dimensions using event-driven molecular dynamics simulations. Our focus is the nature of the stationary state attained by rare injection of large amounts of energy to balance the dissipation due to collisions. We find that under such extreme driving, with the injection rate much smaller than the collision rate, the velocity distribution has a power-law high energy tail. The numerically measured exponent characterizing this tail is in excellent agreement with predictions of kinetic theory over a wide range of system parameters. We conclude that driving by rare but powerful energy injection leads to a well-mixed gas and constitutes an alternative mechanism for agitating granular matter. In this distinct nonequilibrium steady-state, energy cascades from large to small scales. Our simulations also show that when the injection rate is comparable with the collision rate, the velocity distribution has a stretched exponential tail.

W. Kang; J. Machta; E. Ben-Naim

2010-02-04T23:59:59.000Z

224

Kinetics driving high-density chlorine plasmas  

Science Conference Proceedings (OSTI)

A simple fluid model was developed in order to investigate the driving kinetics of neutral and charged species in high-density chlorine plasmas. It was found that the dissociation degree of Cl{sub 2} molecules is directly linked to the power balance of the discharge which controls the electron density. The model was also used to identify those reactions that could be neglected in the particle balance of charged species and those that must be included. Our results further indicate that diffusion losses need to be considered up to a pressure that depends on magnetic-field intensity and reactor aspect ratio. Finally, it is shown that the dominant charged carriers are linked to the dissociation level of Cl{sub 2} molecules.

Stafford, L.; Margot, J.; Vidal, F.; Chaker, M.; Giroux, K.; Poirier, J.-S.; Quintal-Leonard, A.; Saussac, J. [Department de physique, Universite de Montreal, Montreal, Quebec (Canada); INRS-Energie, Materiaux et Telecommunications, Varennes, Quebec (Canada); Department de physique, Universite de Montreal, Montreal, Quebec (Canada)

2005-09-15T23:59:59.000Z

225

Cooling system for rotating machine  

Science Conference Proceedings (OSTI)

An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions.

Gerstler, William Dwight (Niskayuna, NY); El-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Lokhandwalla, Murtuza (Clifton Park, NY); Alexander, James Pellegrino (Ballston Lake, NY); Quirion, Owen Scott (Clifton Park, NY); Palafox, Pepe (Schenectady, NY); Shen, Xiaochun (Schenectady, NY); Salasoo, Lembit (Schenectady, NY)

2011-08-09T23:59:59.000Z

226

BNL Blood Drives: Iron-rich foods  

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

BNL Blood Drives: Iron-Rich Foods Blood Drive Home Seafood: Fish (cod, sardines, tuna, clams, oysters, shrimp) Poultry: Chicken, eggs, yolk Lean Red Meats: Beef, lamb, veal, pork,...

227

A New Approach to Abstract Machines - Introduction to the Theory of Configuration Machines  

E-Print Network (OSTI)

An abstract machine is a theoretical model designed to perform a rigorous study of computation. Such a model usually consists of configurations, instructions, programs, inputs and outputs for the machine. In this paper we formalize these notions as a very simple algebraic system, called a configuration machine. If an abstract machine is defined as a configuration machine consisting of primitive recursive functions then the functions computed by the machine are always recursive. The theory of configuration machines provides a useful tool to study universal machines.

Luo, Zhaohua

2010-01-01T23:59:59.000Z

228

Directions and Maps  

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

Directions & Maps Directions & Maps Plan Your Visit Visit About the Museum Museum Hours Directions & Maps When to Visit Arrange for a Visit Around Los Alamos Contact Us invisible utility element Directions and Maps Aerial View of Los Alamos Aerial approach to the Los Alamos airport Where we're located Los Alamos (elevation 7,355 feet) is perched high atop the Pajarito Plateau in the Jemez Mountains, 35 miles northwest of Santa Fe. The Bradbury Science Museum is located in downtown Los Alamos at the corner of Central Avenue and 15th Street. If you're driving here and using GPS navigation, our address is 1350 Central Avenue, Los Alamos, NM 87544. How to get here From Albuquerque take I-25 north to Santa Fe (take NM 599 for most direct route), then US 84/285 north to Pojoaque. At Pojoaque take the NM 502 exit

229

Edge diagnostics for tandem mirror machines  

SciTech Connect

The edge plasma in a tandem mirror machine shields the plasma core from cold neutral gas and impurities. A variety of diagnostics are used to measure the fueling, shielding, and confinement of the edge plasma in both the end plug and central cell regions. Fast ion gauges and residual gas analyzers measure the gas pressure and composition outside of the plasma. An array of Langmuir probes is used to measure the electron density and temperature. Extreme ultraviolet (euv) and visible spectroscopy are used to measure both the impurity and deuterium densities and to estimate the shielding factor for the core plasma. The linear geometry of a tandem mirror also allows direct measurements of the edge plasma by sampling the ions and electrons lost but the ends of the machine. Representative data obtained by these diagnostics during operation of the Tandem Mirror Experiment (TMX) and Tandem Mirror Experiment-Upgrade (TMX-U) experiments are presented. Diagnostics that are currently being developed to diagnose the edge plasma are also discussed.

Allen, S.L.

1984-09-14T23:59:59.000Z

230

Syntactic mismatches in machine translation  

Science Conference Proceedings (OSTI)

This paper addresses one of the central problems arising at the transfer stage in machine translation: syntactic mismatches, that is, mismatches between a source-language sentence structure and its equivalent target-language sentence structure. The level ... Keywords: Deep-syntactic structure, Meaning-Text Theory, Paraphrasing, Syntactic mismatch, Transfer

Igor Mel'?uk; Leo Wanner

2006-06-01T23:59:59.000Z

231

Machinable dissolved metal oxide superconductors  

DOE Patents (OSTI)

Powders of a metal oxide superconductor are mixed with sufficient amount (10--80 mol%) of In, Sn, and/or Al, to become nonbrittle, machinable. Preferred superconductors are YBa[sub 2]Cu[sub 3]O[sub 7[minus]x] and Bi-Sr-Ca-Cu-O compounds.

Chen, Chung-Hsuan.

1991-01-01T23:59:59.000Z

232

Arbitrary norm support vector machines  

Science Conference Proceedings (OSTI)

Support vector machines (SVM) are state-of-the-art classifiers. Typically L2-norm or L1-norm is adopted as a regularization term in SVMs, while other norm-based SVMs, for example, the L0-norm SVM or even the L?-norm ...

Kaizhu Huang; Danian Zheng; Irwin King; Michael R. Lyu

2009-02-01T23:59:59.000Z

233

Machine Shop Investigates PQ Issues  

Science Conference Proceedings (OSTI)

EPRI performed a power quality (PQ) audit to harden a machine shop against PQ-related issues. EPRI engineers investigated the various origins of existing PQ disturbances as well as the susceptibility of the plant equipment to these disturbances. This case study reports the findings of this detailed investigation.

2007-12-31T23:59:59.000Z

234

Polar Warnings A Lifelike Machine  

E-Print Network (OSTI)

States conducted its last underground nuclear test in 1992 and turned to Los Alamos and the other weapons Certification without Testing LOS ALAMOS DELIVERS THE FIRST NUCLEAR TRIGGER IN 20 YEARS A Lifelike Machine laboratories for a new approach to ensuring the continued safety and reliability of its nuclear deterrent

235

Machinable dissolved metal oxide superconductors  

DOE Patents (OSTI)

Powders of a metal oxide superconductor are mixed with sufficient amount (10--80 mol%) of In, Sn, and/or Al, to become nonbrittle, machinable. Preferred superconductors are YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} and Bi-Sr-Ca-Cu-O compounds.

Chen, Chung-Hsuan

1991-12-31T23:59:59.000Z

236

Human-Machine Function Allocation  

Science Conference Proceedings (OSTI)

Table 1   Human-machine function comparison...ability Comparatively slow and poor computers. Excellent and very rapid computers. Memory storage Poor short-term storage. Excellent long-term storage. Excellent short-term storage. Long-term storage very

237

Low-Cost Single-Phase Powered Induction Machine Drive for Residential Applications  

E-Print Network (OSTI)

-usage. Reliability was estimated via MTBF as calculated per MIL-HDBK-217 for each sub-system as well as the complete

Chapman, Patrick

238

Adaptive fuzzy logic controller for feed drives of a CNC machine tool  

E-Print Network (OSTI)

hydrocarbons can be carried out in a number of ways: steam reforming, thermo-catalytic reforming, partial

Michigan, University of

239

Adjustable Speed Drive Industrial Applications  

E-Print Network (OSTI)

Electric motors are significant users of electricity in the United States. Approximately 66 percent of the total electricity in the U.S. is used by electric motors. Electronic adjustable speed drives (ASDs) can save energy, lower maintenance cost and improve product quality. By providing a variable frequency output to ac motors the speed of the motors can be controlled and matched to the process requirements. The benefits that may be derived from using ASDs are described and the type of ASDs, applications and specific case studies of ASD installations are also discussed.

Poole, J. N.

1989-09-01T23:59:59.000Z

240

Using linguistic knowledge in statistical machine translation  

E-Print Network (OSTI)

In this thesis, we present methods for using linguistically motivated information to enhance the performance of statistical machine translation (SMT). One of the advantages of the statistical approach to machine translation ...

Zbib, Rabih M. (Rabih Mohamed), 1974-

2010-01-01T23:59:59.000Z

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


241

Spatial Ontology in Factored Statistical Machine Translation  

Science Conference Proceedings (OSTI)

This paper presents a statistical phrase-based machine translation system which is enriched with semantic data coming from a spatial ontology. Paper presents the spatial ontology, how it is integrated in statistical machine translation system using factored ...

Raivis Skadi?

2011-08-01T23:59:59.000Z

242

Lower hybrid current drive at plasma densities required for thermonuclear reactors  

Science Conference Proceedings (OSTI)

Driving current in high-density plasmas is essential for the progress of thermonuclear fusion energy research based on the tokamak concept. The lower hybrid current drive (LHCD) effect, is potentially the most suitable tool for driving current at large plasma radii, consistent with the needs of ITER steady state scenario. Unfortunately, experiments at reactor grade high plasma densities with kinetic profiles approaching those required for ITER, have shown problems in penetration of the LH power into the core plasma. These plasmas represent a basic reference for designing possible methods useful for assessing the LHCD concept in ITER. On the basis of the phenomenology observed during LHCD experiments carried out in different machines, and model of the spectral broadening effect due to parametric instability, an interpretation and possible solution of the related important problem is presented.

Cesario, R.; Cardinali, A.; Castaldo, C.; Tuccillo, A. A.; Amicucci, L. [Associazione EURATOM/ENEA sulla Fusione, Centro Ricerche Frascati, 00044 Frascati (Italy)

2011-12-23T23:59:59.000Z

243

Reduction in iron losses in Indirect Vector-Controlled IM Drive using FLC  

E-Print Network (OSTI)

This paper describes the use of fuzzy logic controller for efficiency optimization control of a drive while keeping good dynamic response. At steady-state light-load condition, the fuzzy controller adaptively adjusts the excitation current with respect to the torque current to give the minimum total copper and iron loss. The measured input power such that, for a given load torque and speed, the drive settles down to the minimum input power, i.e., operates at maximum efficiency. The low-frequency pulsating torque due to decrementation of flux is compensated in a feed forward manner. If the load torque or speed commands changes, the efficiency search algorithm is abandoned and the rated flux is established to get the best dynamic response. The drive system with the proposed efficiency optimization controller has been simulated with lossy models of converter and machine, and its performance has been thoroughly investigated.

Srisailam, C; Trivedi, Anurag

2010-01-01T23:59:59.000Z

244

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites...  

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

Small Businesses Helping Drive Economy: Clean Energy, Clean Sites Small Businesses Helping Drive Economy: Clean Energy, Clean Sites A memo on small businesses helping drive the...

245

Software Tackles Production Line Machine ?Cyclic Jitters?  

Science Conference Proceedings (OSTI)

Software Tackles Production Line Machine 'Cyclic ... products, even shutting down assembly lines. ... high-speed data transmission characteristics of ...

2011-07-18T23:59:59.000Z

246

Automated energy monitoring of machine tools  

E-Print Network (OSTI)

in the energy usage, such as increased total consumption fortotal energy use for the machine tool based on the usage

Vijayaraghavan, Athulan; Dornfeld, David

2010-01-01T23:59:59.000Z

247

Do Accelerating Turing Machines Compute the Uncomputable?  

Science Conference Proceedings (OSTI)

Accelerating Turing machines have attracted much attention in the last decade or so. They have been described as "the work-horse of hypercomputation" (Potgieter and Rosinger 2010: 853). But do they really compute beyond the "Turing limit"--e.g., compute ... Keywords: ATM paradox, Accelerating Turing machine, Epistemic embedding, External and internal computation, Halting problem, Hypercomputation, Ontology of computing, Supertask, Thompson lamp paradox, Turing-machine purism, Turing-machine realism

B. Jack Copeland; Oron Shagrir

2011-05-01T23:59:59.000Z

248

Method and apparatus for monitoring machine performance  

DOE Patents (OSTI)

Machine operating conditions can be monitored by analyzing, in either the time or frequency domain, the spectral components of the motor current. Changes in the electric background noise, induced by mechanical variations in the machine, are correlated to changes in the operating parameters of the machine.

Smith, Stephen F. (Loudon, TN); Castleberry, Kimberly N. (Harriman, TN)

1996-01-01T23:59:59.000Z

249

Hindi to Punjabi machine translation system  

Science Conference Proceedings (OSTI)

Hindi-Punjabi being closely related language pair (Goyal V. and Lehal G. S., 2008), Hybrid Machine Translation approach has been used for developing Hindi to Punjabi Machine Translation System. Non-availability of lexical resources, spelling variations ... Keywords: Hindi, Punjabi, closely related languages, computational linguistics, machine translation, natural language processing, translate Hindi to Punjabi

Vishal Goyal; Gurpreet Singh Lehal

2011-06-01T23:59:59.000Z

250

Nano-Machines Achieve Huge Mechanical Breakthrough  

E-Print Network (OSTI)

NANO TECH Nano-Machines Achieve Huge Mechanical Breakthrough Dublin, Ireland (SPX) Sep 08, 2005 that use molecular 'nano'-machines of this kind to help perform physical tasks. Nano-machines could also owners set to return to battered Orleans l Six dead, two missing after heavy rains hit Page 1 of 3Nano

Leigh, David A.

251

Machine learning in space: extending our reach  

Science Conference Proceedings (OSTI)

We introduce the challenge of using machine learning effectively in space applications and motivate the domain for future researchers. Machine learning can be used to enable greater autonomy to improve the duration, reliability, cost-effectiveness, and ... Keywords: Autonomy, Machine learning applications, Space missions

Amy Mcgovern; Kiri L. Wagstaff

2011-09-01T23:59:59.000Z

252

A first look at cellular machine-to-machine traffic: large scale measurement and characterization  

Science Conference Proceedings (OSTI)

Cellular network based Machine-to-Machine (M2M) communication is fast becoming a market-changing force for a wide spectrum of businesses and applications such as telematics, smart metering, point-of-sale terminals, and home security and automation systems. ... Keywords: cellular network, machine-to-machine traffic

Muhammad Zubair Shafiq; Lusheng Ji; Alex X. Liu; Jeffrey Pang; Jia Wang

2012-06-01T23:59:59.000Z

253

Machine-to-Machine Communications and Security Solution in Cellular Systems  

Science Conference Proceedings (OSTI)

This paper introduces an efficient machine-to-machine M2M communication model based on 4G cellular systems. M2M terminals are capable of establishing Ad Hoc clusters wherever they are close enough. It is also possible to extend the cellular coverage ... Keywords: 4G Network, Ad Hoc, Machine-To-Machine, Security, Terminals

Mahdy Saedy; Vahideh Mojtahed

2011-04-01T23:59:59.000Z

254

A micro-machined resonator  

DOE Patents (OSTI)

This invention is comprised of a micro-machined resonator, typically quartz, with upper and lower micromachinable support members, or covers, having etched wells which may be lined with conductive electrode material, between the support members is a quartz resonator having an energy trapping quartz mesa capacitively coupled to the electrodes through a diaphragm; the quartz resonator is supported by either micro-machined cantilever springs or by thin layers extending over the surfaces of the support. If the diaphragm is rigid, clock applications are available, and if the diaphragm is resilient, then transducer applications can be achieved. Either the thin support layers or the conductive electrode material can be integral with the diaphragm. In any event, the covers are bonded to form a hermetic seal and the interior volume may be filled with a gas or may be evacuated. In addition, one or both of the covers may include oscillator and interface circuitry for the resonator.

Godshall, N.A.; Koehler, D.R.; Liang, A.Y.; Smith, B.K.

1991-12-31T23:59:59.000Z

255

DOE Drives Big Data Push  

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

2 Volume 9 Issue 2 2 Volume 9 Issue 2 From YAGS to Planetary Biology . . . . . . . . . . . . . . . 2 DOE Drives Big Data Push . . . . . . . . . . . . . . . . . . . . 3 Sweating Small Scale Genomics . . . . . . . . . . . . . . . 6 The Future of the DOE JGI . . . . . . . . . . . . . . . . . . . . 7 Save the Date for Meeting 8 . . . . . . . . . . . . . . . . . . . 8 also in this issue With a record 488 genomics researchers and bioinformaticians sitting in the Marriott Walnut Creek ballroom, New York Times science writer Carl Zimmer opened the DOE Joint Genome Institute's 7th Annual Genomics of Energy & Environment Meeting on March 20, 2012. Sharing his thoughts about being "On the Genome Beat," he informed the audience that he was worn down by seeing news about scientists successfully sequencing yet another genome sequence, and that "maybe some genomes shouldn't be written about." Zimmer's words engaged the audience in a discussion that

256

Current Drive in Recombining Plasma  

SciTech Connect

The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the effect of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero "residual" current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.

P.F. Schmit and N.J. Fisch

2012-05-15T23:59:59.000Z

257

Current drive in recombining plasma  

SciTech Connect

The Langevin equations describing the average collisional dynamics of suprathermal particles in nonstationary plasma remarkably admit an exact analytical solution in the case of recombining plasma. The current density produced by arbitrary particle fluxes is derived including the influence of charge recombination. Since recombination has the effect of lowering the charge density of the plasma, thus reducing the charged particle collisional frequencies, the evolution of the current density can be modified substantially compared to plasma with fixed charge density. The current drive efficiency is derived and optimized for discrete and continuous pulses of current, leading to the discovery of a nonzero ''residual'' current density that persists indefinitely under certain conditions, a feature not present in stationary plasmas.

Schmit, P. F.; Fisch, N. J. [Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 (United States)

2011-10-15T23:59:59.000Z

258

Z Machine | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Z Machine | National Nuclear Security Administration Z Machine | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Z Machine Z Machine Home > About Us > Our Programs > Defense Programs > Office of Research, Development, Test, and Evaluation > Office of Inertial Confinement Fusion > Facilities > Z Machine Z Machine Z Machine Sandia National Laboratories

259

Vehicle Technologies Office: U.S. DRIVE  

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

U.S. DRIVE U.S. DRIVE Logo for U.S. DRIVE - Driving Research and Innovation for Vehicle efficiency and Energy sustainability. U.S. DRIVE stands for Driving Research and Innovation for Vehicle efficiency and Energy sustainability. It is a non-binding and voluntary government-industry partnership focused on advanced automotive and related infrastructure technology research and development (R&D). Specifically, the Partnership is a forum for pre-competitive technical information exchange among partners to discuss R&D needs, develop joint goals and technology roadmaps, and evaluate R&D progress for a broad range of technical areas. By providing a framework for frequent and regular interaction among technical experts in a common area of expertise, the Partnership -

260

Electric vehicle drive train with contactor protection  

DOE Patents (OSTI)

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

Konrad, C.E.; Benson, R.A.

1994-11-29T23:59:59.000Z

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


261

Electric vehicle drive train with contactor protection  

SciTech Connect

A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

Konrad, Charles E. (Roanoke, VA); Benson, Ralph A. (Roanoke, VA)

1994-01-01T23:59:59.000Z

262

Machines  

Science Conference Proceedings (OSTI)

...are used to supply electrical energy for the welding operation. The transformer tap switch frequently is a rotary, eight-step, knife-type, fully enclosed locking switch, which provides convenient adjustment of the welding voltage to suit work

263

16,000-rpm Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation  

SciTech Connect

The reluctance interior permanent magnet (RIPM) motor is currently used by many leading auto manufacturers for hybrid vehicles. The power density for this type of motor is high compared with that of induction motors and switched reluctance motors. The primary drawback of the RIPM motor is the permanent magnet (PM) because during high-speed operation, the fixed PM produces a huge back electromotive force (emf) that must be reduced before the current will pass through the stator windings. This reduction in back-emf is accomplished with a significant direct-axis (d-axis) demagnetization current, which opposes the PM's flux to reduce the flux seen by the stator wires. This may lower the power factor and efficiency of the motor and raise the requirement on the alternate current (ac) power supply; consequently, bigger inverter switching components, thicker motor winding conductors, and heavier cables are required. The direct current (dc) link capacitor is also affected when it must accommodate heavier harmonic currents. It is commonly agreed that, for synchronous machines, the power factor can be optimized by varying the field excitation to minimize the current. The field produced by the PM is fixed and cannot be adjusted. What can be adjusted is reactive current to the d-axis of the stator winding, which consumes reactive power but does not always help to improve the power factor. The objective of this project is to avoid the primary drawbacks of the RIPM motor by introducing brushless field excitation (BFE). This offers both high torque per ampere (A) per core length at low speed by using flux, which is enhanced by increasing current to a fixed excitation coil, and flux, which is weakened at high speed by reducing current to the excitation coil. If field weakening is used, the dc/dc boost converter used in a conventional RIPM motor may be eliminated to reduce system costs. However, BFE supports a drive system with a dc/dc boost converter, because it can further extend the constant power speed range of the drive system and adjust the field for power factor and efficiency gains. Lower core losses at low torque regions, especially at high speeds, are attained by reducing the field excitation. Safety and reliability are increased by weakening the field when a winding short-circuit fault occurs, preventing damage to the motor. For a high-speed motor operating at 16,000-revolutions per minute (rpm), mechanical stress is a challenge. Bridges that link the rotor punching segments together must be thickened for mechanical integrity; consequently, increased rotor flux leakage significantly lowers motor performance. This barrier can be overcome by BFE to ensure sufficient rotor flux when needed.

Hsu, J.S.; Burress, T.A.; Lee, S.T.; Wiles, R.H.; Coomer, C.L.; McKeever, J.W.; Adams, D.J.

2007-10-31T23:59:59.000Z

264

Marketing & Driving Demand: Social Media Tools & Strategies ...  

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

Marketing & Driving Demand: Social Media Tools & Strategies January 16, 2011 Maryanne Fuller (MF): Hi there. This is Maryanne Fuller from Lawrence Berkeley National Laboratory....

265

Electric Drive Vehicles and Their Infrastructure Issues  

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

Clean Cities Webinar - Electric Drive Vehicles and Their Infrastructure Issues (March 2010) Jim Francfort and Don Karner Advanced Vehicle Testing Activity March 24, 2010 This...

266

Fuel Economy: What Drives Consumer Choice?  

E-Print Network (OSTI)

Car Buyers and Fuel Economy? Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? Rather, we listened closely

Turrentine, Tom; Kurani, Kenneth S; Heffner, Reid R.

2008-01-01T23:59:59.000Z

267

Fuel Economy: What Drives Consumer Choice?  

E-Print Network (OSTI)

Car Buyers and Fuel Economy? Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? Rather, we listened closely

Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

2007-01-01T23:59:59.000Z

268

Electric-Drive Vehicle Basics (Brochure)  

DOE Green Energy (OSTI)

Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

Not Available

2011-04-01T23:59:59.000Z

269

Wind Turbine Design Innovations Drive Industry Transformation...  

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

Wind Turbine Design Innovations Drive Industry Transformation For more than 20 years, the National Renewable Energy Laboratory (NREL) has helped GE and its predecessors achieve...

270

Experiments with the Dragon Machine  

Science Conference Proceedings (OSTI)

The basic characteristics of a self-sustaining chain reaction were demonstrated with the Chicago Pile in 1943, but it was not until early 1945 that sufficient enriched material became available to experimentally verify fast-neutron cross-sections and the kinetic characteristics of a nuclear chain reaction sustained with prompt neutrons alone. However, the demands of wartime and the rapid decline in effort following the cessation of hostilities often resulted in the failure to fully document the experiments or in the loss of documentation as personnel returned to civilian pursuits. When documented, the results were often highly classified. Even when eventually declassified, the data were often not approved for public release until years later.2 Even after declassification and approval for public release, the records are sometimes difficult to find. Through a fortuitous discovery, a set of handwritten notes by ''ORF July 1945'' entitled ''Dragon - Research with a Pulsed Fission Reactor'' was found by William L. Myers in an old storage safe at Pajarito Site of the Los Alamos National Laboratory3. Of course, ORF was identified as Otto R. Frisch. The document was attached to a page in a nondescript spiral bound notebook labeled ''494 Book'' that bore the signatures of Louis Slotin and P. Morrison. The notes also reference an ''Idea LS'' that can only be Louis Slotin. The discovery of the notes led to a search of Laboratory Archives, the negative files of the photo lab, and the Report Library for additional details of the experiments with the Dragon machine that were conducted between January and July 1945. The assembly machine and the experiments were carefully conceived and skillfully executed. The analyses--without the crutch of computers--display real insight into the characteristics of the nuclear chain reaction. The information presented here provides what is believed to be a complete collection of the original documentation of the observations made with the Dragon Machine in early 1945.

R.E. Malenfant

2005-08-12T23:59:59.000Z

271

Free-piston cutting machine  

DOE Patents (OSTI)

A cutting machine includes a gun barrel for receiving a projectile. A compression tube is disposed in flow communication with the barrel and includes a piston therein. A reservoir is disposed in flow communication with the tube and receives a first gas under pressure. A second gas fills the compression tube on a front face of the piston. And, the pressurized first gas is discharged into the tube on a back face of the piston to accelerate the piston through the tube for compressing the second gas, and in turn launching the projectile through the barrel to impact a workpiece.

Ciccarelli, Gaby (East Setauket, NY); Subudhi, Manomohan (East Setauket, NY); Hall, Robert E. (Port Jefferson, NY)

2000-01-01T23:59:59.000Z

272

Hypervelocity cutting machine and method  

DOE Patents (OSTI)

A method and machine are provided for cutting a workpiece such as concrete. A gun barrel is provided for repetitively loading projectiles therein and is supplied with a pressurized propellant from a storage tank. A thermal storage tank is disposed between the propellant storage tank and the gun barrel for repetitively receiving and heating propellant charges which are released in the gun barrel for repetitively firing projectiles therefrom toward the workpiece. In a preferred embodiment, hypervelocity of the projectiles is obtained for cutting the concrete workpiece by fracturing thereof. 10 figs.

Powell, J.R.; Reich, M.

1996-11-12T23:59:59.000Z

273

Hypervelocity cutting machine and method  

DOE Patents (OSTI)

A method and machine 14 are provided for cutting a workpiece 12 such as concrete. A gun barrel 16 is provided for repetitively loading projectiles 22 therein and is supplied with a pressurized propellant from a storage tank 28. A thermal storage tank 32,32A is disposed between the propellant storage tank 28 and the gun barrel 16 for repetitively receiving and heating propellant charges which are released in the gun barrel 16 for repetitively firing projectiles 22 therefrom toward the workpiece 12. In a preferred embodiment, hypervelocity of the projectiles 22 is obtained for cutting the concrete workpiece 12 by fracturing thereof.

Powell, James R. (Shoreham, NY); Reich, Morris (Queens, NY)

1996-11-12T23:59:59.000Z

274

Micro-machined calorimetric biosensors  

DOE Patents (OSTI)

A method and apparatus are provided for detecting and monitoring micro-volumetric enthalpic changes caused by molecular reactions. Micro-machining techniques are used to create very small thermally isolated masses incorporating temperature-sensitive circuitry. The thermally isolated masses are provided with a molecular layer or coating, and the temperature-sensitive circuitry provides an indication when the molecules of the coating are involved in an enthalpic reaction. The thermally isolated masses may be provided singly or in arrays and, in the latter case, the molecular coatings may differ to provide qualitative and/or quantitative assays of a substance.

Doktycz, Mitchel J. (Knoxville, TN); Britton, Jr., Charles L. (Alcoa, TN); Smith, Stephen F. (Loudon, TN); Oden, Patrick I. (Plano, TX); Bryan, William L. (Knoxville, TN); Moore, James A. (Powell, TN); Thundat, Thomas G. (Knoxville, TN); Warmack, Robert J. (Knoxville, TN)

2002-01-01T23:59:59.000Z

275

Electric vehicle drive train with rollback detection and compensation  

DOE Patents (OSTI)

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared.

Konrad, Charles E. (Roanoke, VA)

1994-01-01T23:59:59.000Z

276

Electric vehicle drive train with rollback detection and compensation  

DOE Patents (OSTI)

An electric vehicle drive train includes a controller for detecting and compensating for vehicle rollback, as when the vehicle is started upward on an incline. The vehicle includes an electric motor rotatable in opposite directions corresponding to opposite directions of vehicle movement. A gear selector permits the driver to select an intended or desired direction of vehicle movement. If a speed and rotational sensor associated with the motor indicates vehicle movement opposite to the intended direction of vehicle movement, the motor is driven to a torque output magnitude as a nonconstant function of the rollback speed to counteract the vehicle rollback. The torque function may be either a linear function of speed or a function of the speed squared. 6 figures.

Konrad, C.E.

1994-12-27T23:59:59.000Z

277

All Electric Injection Molding Machines: How Much Energy Can You Save?  

E-Print Network (OSTI)

There are three basic types of injection molding machines (IMMs) currently on the market: hydraulic, all-electric, and hybrid. They each have a different way of driving machine processes. Hydraulic IMMs use hydraulic pumps, all-electric machines use only high-speed servo motors, and hybrid IMMs use a combination of hydraulic pumps and servo motors. It is widely accepted that all-electric IMMs are the most energy efficient of the three technologies. Surprisingly, available quantitative analysis of energy savings from all-electric IMMs is limited and much of it relies on manufacturer claims and limited real life performance data. Manufacturers and utility estimates of energy savings due to the installation of an all-electric injection molding machine are typically based solely on the type of IMM technology or the IMM technology type and throughput, also called the mass flow rate of production. This paper suggests that there are other factors that influence energy usage in addition to the mass flow rate, such as product type, product cycle time, injection temperature, clamping pressure requirement, screw length and clamping distance. This paper details the injection molding process and investigates specific factors that affect IMM energy usage and energy savings. Some all-electric injection molding manufacturers claim that the market for injection molding machinery will completely take over the plastic molding industry in North America. Do these quiet, clean, precise, repeatable, and energy-efficient, all-electrics be the new norm in North American plastic molding industry? Will hydraulic molding machines become extinct? If all-electric IMMs are not fifth generation, will they be able to deliver higher clamping force believed to be equivalent to the hydraulic machines? To what extent are hydraulic machines replaceable with all electric machines based on different applications? In this paper, we attempt to answer all the above questions. We will discuss the current market share of the different injection molding technologies. We will investigate the percentage utilization of the rated capacity of all three types of injection molding technology. We will address how the percentage utilization of all electric machines is comparable with the same capacity of hybrid and hydraulic machines. We will also assess the market potential of all three injection-molding technologies depending on their application, cost, capabilities and energy consumption. We will discuss the current market shares among hydraulic, hybrid and all-electric machines. Finally, we will also discuss the attitudinal and economic market barriers of acceptance of all-electric technologies.

Kanungo, A.; Swan, E.

2008-01-01T23:59:59.000Z

278

Control rod drive hydraulic system  

DOE Patents (OSTI)

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

Ose, Richard A. (San Jose, CA)

1992-01-01T23:59:59.000Z

279

UCDavis University of California Learning By Driving  

E-Print Network (OSTI)

% 29% 0% 2% 10% 37% 39% 71% Solar Wind Hydro Nuclear Natural Gas Coal The electricity for charging fun with it. "I love the regenerative braking. In fact, I miss it when I drive my other cars." ­ Household 8 "It is like driving a slot car. It is exciting; it is as much fun as accelerating" ­ Survey

California at Davis, University of

280

Methods, systems and apparatus for controlling operation of two alternating current (AC) machines  

SciTech Connect

A system is provided for controlling two AC machines. The system comprises a DC input voltage source that provides a DC input voltage, a voltage boost command control module (VBCCM), a five-phase PWM inverter module coupled to the two AC machines, and a boost converter coupled to the inverter module and the DC input voltage source. The boost converter is designed to supply a new DC input voltage to the inverter module having a value that is greater than or equal to a value of the DC input voltage. The VBCCM generates a boost command signal (BCS) based on modulation indexes from the two AC machines. The BCS controls the boost converter such that the boost converter generates the new DC input voltage in response to the BCS. When the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines, the BCS controls the boost converter to drive the new DC input voltage generated by the boost converter to a value greater than the DC input voltage.

Gallegos-Lopez, Gabriel (Torrance, CA); Nagashima, James M. (Cerritos, CA); Perisic, Milun (Torrance, CA); Hiti, Silva (Redondo Beach, CA)

2012-02-14T23:59:59.000Z

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


281

An Assessment of High Performance AC Motor Drives Versus DC Motor Drives  

Science Conference Proceedings (OSTI)

In today's rapidly changing market place, drive users are applying AC and DC drives in applications that require more demanding speed and torque performance. Properly matching a drive's rating and unit characteristics to an application are two very effective ways of managing unit cost and cost reduction.

1998-12-29T23:59:59.000Z

282

DRIVE Analysis Tool Generates Custom Vehicle Drive Cycles Based on Real-World Data (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet from the National Renewable Energy Laboratory describes the Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool, which uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles, analyzing thousands of hours of data in a matter of minutes.

Not Available

2013-04-01T23:59:59.000Z

283

Machine and Beam Delivery Updates  

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

MAchine and Beam delivery Updates FY13 MAchine and Beam delivery Updates FY13 Summary of Beam Delivery: FACET Summary Feb_15_22.pdf FACET Summary Feb_15_22.pdf FACET Summary Feb_23_Mar_1.pdf FACET Summary Feb_23_Mar_1.pdf FACET Summary Mar_2_8.pdf FACET Summary Mar_2_8.pdf FACET Summary Mar_9_15.pdf FACET Summary Mar_9_15.pdf FACET Summary Mar_16_22.pdf FACET Summary Mar_16_22.pdf FACET Summary Mar_23_29.pdf FACET Summary Mar_23_29.pdf FACET Summary Mar_30_Apr_5.pdf FACET Summary Mar_30_Apr_5.pdf FACET Summary Apr_6_12.pdf FACET Summary Apr_6_12.pdf FACET Summary Apr_27_May_3.pdf FACET Summary Apr_27_May_3.pdf FACET Summary May_4_10.pdf FACET Summary May_4_10.pdf Emittance Stability in Sector 2_31513.pdf Emittance Stability in Sector 2_31513.pdf FACET beam operations readiness with R56.pdf FACET beam operations readiness with R56.pdf (6/19/2013)

284

Micro-machined resonator oscillator  

DOE Patents (OSTI)

A micro-miniature resonator-oscillator is disclosed. Due to the miniaturization of the resonator-oscillator, oscillation frequencies of one MHz and higher are utilized. A thickness-mode quartz resonator housed in a micro-machined silicon package and operated as a telemetered sensor beacon'' that is, a digital, self-powered, remote, parameter measuring-transmitter in the FM-band. The resonator design uses trapped energy principles and temperature dependence methodology through crystal orientation control, with operation in the 20--100 MHz range. High volume batch-processing manufacturing is utilized, with package and resonator assembly at the wafer level. Unique design features include squeeze-film damping for robust vibration and shock performance, capacitive coupling through micro-machined diaphragms allowing resonator excitation at the package exterior, circuit integration and extremely small (0.1 in. square) dimensioning. A family of micro-miniature sensor beacons is also disclosed with widespread applications as bio-medical sensors, vehicle status monitors and high-volume animal identification and health sensors. The sensor family allows measurement of temperatures, chemicals, acceleration and pressure. A microphone and clock realization is also available. 21 figs.

Koehler, D.R.; Sniegowski, J.J.; Bivens, H.M.; Wessendorf, K.O.

1994-08-16T23:59:59.000Z

285

Micro-machined resonator oscillator  

DOE Patents (OSTI)

A micro-miniature resonator-oscillator is disclosed. Due to the miniaturization of the resonator-oscillator, oscillation frequencies of one MHz and higher are utilized. A thickness-mode quartz resonator housed in a micro-machined silicon package and operated as a "telemetered sensor beacon" that is, a digital, self-powered, remote, parameter measuring-transmitter in the FM-band. The resonator design uses trapped energy principles and temperature dependence methodology through crystal orientation control, with operation in the 20-100 MHz range. High volume batch-processing manufacturing is utilized, with package and resonator assembly at the wafer level. Unique design features include squeeze-film damping for robust vibration and shock performance, capacitive coupling through micro-machined diaphragms allowing resonator excitation at the package exterior, circuit integration and extremely small (0.1 in. square) dimensioning. A family of micro-miniature sensor beacons is also disclosed with widespread applications as bio-medical sensors, vehicle status monitors and high-volume animal identification and health sensors. The sensor family allows measurement of temperatures, chemicals, acceleration and pressure. A microphone and clock realization is also available.

Koehler, Dale R. (Albuquerque, NM); Sniegowski, Jeffry J. (Albuquerque, NM); Bivens, Hugh M. (Albuquerque, NM); Wessendorf, Kurt O. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

286

JGI - Directions  

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

Map to JGI Directions from Directions from key local start points, public transit Home > About Us > Map to JGI UC logo DOE logo Contact Us Credits Disclaimer Access...

287

Rapid Response Small Machining NNR Project 703025  

SciTech Connect

This project was an effort to develop a machining area for small sized parts that is capable of delivering product with a quick response time. This entailed focusing efforts on leaning out specific work cells that would result in overall improvement to the entire machining area. This effort involved securing the most efficient available technologies for these areas. In the end, this incorporated preparing the small machining area for transformation to a new facility.

Kanies, Tim

2008-12-05T23:59:59.000Z

288

Gas Mileage Tips - Driving More Efficiently  

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

Driving More Efficiently Driving More Efficiently Personalize Fuel Prices Select the fuel type and enter your fuel price to personalize savings estimates. Regular Midgrade Premium Diesel E85 CNG LPG $ 3.33 /gal Save My Prices Use Default Prices Click "Save My Prices" to apply your prices to other pages, or click "Use Default Prices" use national average prices. Drive Sensibly frustrated driver Aggressive driving (speeding, rapid acceleration and braking) wastes gas. It can lower your gas mileage by 33% at highway speeds and by 5% around town. Sensible driving is also safer for you and others, so you may save more than gas money. Fuel Economy Benefit: 5%-33% Equivalent Gasoline Savings: $0.17-$1.10/gallon Observe the Speed Limit (New Information) Graph showing MPG decreases rapidly at speeds above 50 mph

289

Electrifying Your Drive | Department of Energy  

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

Electrifying Your Drive Electrifying Your Drive Electrifying Your Drive April 27, 2010 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For anyone who grew up watching The Jetsons (or Back to the Future, depending on your generation), the "Car of the Future!" flew through the skies with the greatest of ease. Although most of us have given up on our hopes of a flying car, anything beyond the internal combustion engine has seemed hopelessly out of reach until recently. However, with several manufacturers planning on producing plug-in and all-electric vehicles, the Car of the Future will be available soon! But before you put down a deposit, it's helpful to understand the different types of electric drive technologies. The most basic form of electric drive

290

Electrifying Your Drive | Department of Energy  

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

Electrifying Your Drive Electrifying Your Drive Electrifying Your Drive April 27, 2010 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For anyone who grew up watching The Jetsons (or Back to the Future, depending on your generation), the "Car of the Future!" flew through the skies with the greatest of ease. Although most of us have given up on our hopes of a flying car, anything beyond the internal combustion engine has seemed hopelessly out of reach until recently. However, with several manufacturers planning on producing plug-in and all-electric vehicles, the Car of the Future will be available soon! But before you put down a deposit, it's helpful to understand the different types of electric drive technologies. The most basic form of electric drive

291

MHK Technologies/Oregon State University Columbia Power Technologies Direct  

Open Energy Info (EERE)

State University Columbia Power Technologies Direct State University Columbia Power Technologies Direct Drive Point Absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Oregon State University Columbia Power Technologies Direct Drive Point Absorber.jpg Technology Profile Primary Organization Oregon State University OSU Project(s) where this technology is utilized *MHK Projects/OSU Direct Drive Power Generation Buoys Technology Resource Click here Wave Technology Type Click here Point Absorber Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description When the coil experiences a changing magnetic field created by the heaving magnets voltage is generated Technology Dimensions

292

Automated energy monitoring of machine tools  

E-Print Network (OSTI)

studies to correlate energy usage with the operations beinghas characterized machining energy usage solely based on theplanning, process energy usage was characterized solely by

Vijayaraghavan, Athulan; Dornfeld, David

2010-01-01T23:59:59.000Z

293

Single machine stochastic appointment sequencing and scheduling  

E-Print Network (OSTI)

linear combination of job waiting time, machine idle time, and overtime. .... Through straightforward but lengthy analysis we found finite values for M1 and M2.

294

6.685 Electric Machines, Fall 2003  

E-Print Network (OSTI)

Treatment of electromechanical transducers, rotating and linear electric machines. Lumped-parameter electromechanics of interaction. Development of device characteristics: energy conversion density, efficiency; and of ...

Kirtley, James L.

295

Automated energy monitoring of machine tools  

E-Print Network (OSTI)

Potential for Energy Consumption in Discrete Part Productionprocessing Reducing the energy consumption of machine toolsthis, monitoring of energy consumption patterns in the

Vijayaraghavan, Athulan; Dornfeld, David

2010-01-01T23:59:59.000Z

296

Conceptual Design - Polar Drive Ignition Campaign  

SciTech Connect

The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

Hansen, R

2012-04-05T23:59:59.000Z

297

Conceptual Design - Polar Drive Ignition Campaign  

SciTech Connect

The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

Hansen, R

2012-04-05T23:59:59.000Z

298

A Novel Current Angle Control Scheme in a Current Source Inverter Fed Permanent Magnet Synchronous Motor Drive for Automotive Applications  

DOE Green Energy (OSTI)

This paper describes a novel speed control scheme to operate a current source inverter (CSI) driven surface-mounted permanent magnet synchronous machine (SPMSM) for hybrid electric vehicles (HEVs) applications. The idea is to use the angle of the current vector to regulate the rotor speed while keeping the two dc-dc converter power switches on all the time to boost system efficiency. The effectiveness of the proposed scheme was verified with a 3 kW CSI-SPMSM drive prototype.

Tang, Lixin [ORNL; Su, Gui-Jia [ORNL

2011-01-01T23:59:59.000Z

299

Tabu search heuristic for two-machine flowshop with batch processing machines  

Science Conference Proceedings (OSTI)

Batch processing machines are frequently encountered in many industrial environments. A batch processing machine is one which can process several jobs simultaneously as a batch. The processing time of a batch is equal to the largest processing time of ... Keywords: Batch processing machines, Flowshop, MILP model, Tabu search

Li-Man Liao; Ching-Jen Huang

2011-04-01T23:59:59.000Z

300

A two-stage stochastic programming model for the parallel machine scheduling problem with machine capacity  

Science Conference Proceedings (OSTI)

This paper proposes a two-stage stochastic programming model for the parallel machine scheduling problem where the objective is to determine the machines' capacities that maximize the expected net profit of on-time jobs when the due dates are uncertain. ... Keywords: Average sample approximation, Parallel machine scheduling, Ranking and selection, Stochastic programming, Weighted number of on-time jobs

Talal Al-Khamis; Rym M'Hallah

2011-12-01T23:59:59.000Z

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


301

Review: Virtual machine tools and virtual machining-A technological review  

Science Conference Proceedings (OSTI)

Virtual manufacturing systems provide a useful means for products to be manufactured 'right the first time' without the need of physical testing on the shop floor. Earlier research was mostly on developing a virtual manufacturing environment. Over the ... Keywords: Machining simulation, Virtual machine tool, Virtual machining, Virtual system

Aini Abdul Kadir; Xun Xu; Enrico Hmmerle

2011-06-01T23:59:59.000Z

302

Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Efficient Driving Efficient Driving Behaviors to Conserve Fuel to someone by E-mail Share Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Facebook Tweet about Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Twitter Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Google Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Delicious Rank Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Digg Find More places to share Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Management Strategies

303

Control of Two Permanent Magnet Machines Using a Five-Leg Inverter for Automotive Applications  

SciTech Connect

This paper presents digital control schemes for control of two permanent magnet (PM) machines in an integrated traction and air-conditioning compressor drive system for automotive applications. The integrated drive system employs a five-leg inverter to power a three-phase traction PM motor and a two-phase compressor PM motor by tying the common terminal of the two-phase motor to the neutral point of the three-phase motor. Compared to a three-phase or a standalone two-phase inverter, it eliminates one phase leg and shares the control electronics between the two drives, thus significantly reducing the component count of the compressor drive. To demonstrate that the speed and torque of the two PM motors can be controlled independently, a control strategy was implemented in a digital signal processor, which includes a rotor flux field orientation based control (RFOC) for the three-phase motor, a similar RFOC and a position sensorless control in the brushless dc (BLDC) mode for the two-phase motor. Control implementation issues unique to a two-phase PM motor are also discussed. Test results with the three-phase motor running in the ac synchronous (ACS) mode while the two-phase motor either in the ACS or the BLDC mode are included to verify the independent speed and torque control capability of the integrated drive.

Su, Gui-Jia [ORNL; Tang, Lixin [ORNL; Huang, Xianghui [GE Global Research

2006-01-01T23:59:59.000Z

304

Control rod drive for reactor shutdown  

DOE Patents (OSTI)

A means for rapidly shutting down or scramming a nuclear reactor, such as a liquid metal-cooled fast breeder reactor, and serves as a backup to the primary shutdown system. The control rod drive consists basically of an in-core assembly, a drive shaft and seal assembly, and a control drive mechanism. The control rod is driven into the core region of the reactor by gravity and hydraulic pressure forces supplied by the reactor coolant, thus assuring that common mode failures will not interfere with or prohibit scramming the reactor when necessary.

McKeehan, Ernest R. (Los Gatos, CA); Shawver, Bruce M. (San Jose, CA); Schiro, Donald J. (San Jose, CA); Taft, William E. (Los Gatos, CA)

1976-01-20T23:59:59.000Z

305

Improving vehicle aeroacoustics using machine learning  

Science Conference Proceedings (OSTI)

This paper presents a new approach to improving the overall aeroacoustic comfort of a vehicle, an important feature of vehicle design. The traditional improvement process is extended to benefit extensively from machine learning, information retrieval ... Keywords: Aeroacoustics, Automobile industry, Machine learning, Noise frequency spectrum analysis, Process automation

Damjan Kunar; Martin Moina; Marina Giordanino; Ivan Bratko

2012-08-01T23:59:59.000Z

306

Quantum Cloning Machines and the Applications  

E-Print Network (OSTI)

No-cloning theorem is fundamental for quantum mechanics and for quantum information science that states an unknown quantum state cannot be cloned perfectly. However, we can try to clone a quantum state approximately with the optimal fidelity, or instead, we can try to clone it perfectly with the largest probability. Thus various quantum cloning machines have been designed for different quantum information protocols. Specifically, quantum cloning machines can be designed to analyze the security of quantum key distribution protocols such as BB84 protocol, six-state protocol, B92 protocol and their generalizations. Some well-known quantum cloning machines include universal quantum cloning machine, phase-covariant cloning machine, the asymmetric quantum cloning machine and the probabilistic quantum cloning machine etc. In the past years, much progress has been made in studying quantum cloning machines and their applications and implementations, both theoretically and experimentally. In this review, we will give a complete description of those important developments about quantum cloning and some related topics. On the other hand, this review is self-consistent, and in particular, we try to present some detailed formulations so that further study can be taken based on those results. In addition, this review also contains some new results, for example, the study of quantum retrodiction protocol.

Heng Fan; Yi-Nan Wang; Li Jing; Jie-Dong Yue; Han-Duo Shi; Yong-Liang Zhang; Liang-Zhu Mu

2013-01-14T23:59:59.000Z

307

Bagging and Boosting statistical machine translation systems  

Science Conference Proceedings (OSTI)

In this article we address the issue of generating diversified translation systems from a single Statistical Machine Translation (SMT) engine for system combination. Unlike traditional approaches, we do not resort to multiple structurally different SMT ... Keywords: Ensemble learning, Statistical machine translation, System combination

Tong Xiao; Jingbo Zhu; Tongran Liu

2013-02-01T23:59:59.000Z

308

Comparison of crowdsourcing translation with Machine Translation  

Science Conference Proceedings (OSTI)

In this paper we examine the model of crowdsourcing for translation and compare it with Machine Translation (MT). The large volume of material to be translated, the translation of this material into many languages combined with tight deadlines lead enterprises ... Keywords: Machine Translation, crowdsourcing, empirical data, human translation, quality

Dimitra Anastasiou; Rajat Gupta

2011-12-01T23:59:59.000Z

309

Machine Translation Errors: English and Iraqi Arabic  

Science Conference Proceedings (OSTI)

Errors in machine translations of English-Iraqi Arabic dialogues were analyzed using the methods developed for the Human Translation Error Rate measure (HTER). Human annotations were used to refine the Translation Error Rate (TER) annotations. The analyses ... Keywords: Arabic, English, error analysis, evaluation, statistical machine translation

S. Condon; D. Parvaz; J. Aberdeen; C. Doran; A. Freeman; M. Awad

2011-03-01T23:59:59.000Z

310

A Machine Vision System for Inspecting Bearings  

Science Conference Proceedings (OSTI)

In this paper, we describe a machine vision system for inspecting bearings, which are an important part of electro-mechanical kWh meters. The system consists of a personal computer with a frame grabber, a black and white progressive scan CCD camera, ... Keywords: machine vision, quality control, bearing, eccentricity

2000-09-01T23:59:59.000Z

311

LTC vacuum blasting machine (concrete): Baseline report  

SciTech Connect

The LTC shot blast technology was tested and is being evaluated at Florida International University (FIU) as a baseline technology. In conjunction with FIU`s evaluation of efficiency and cost, this report covers the evaluation conducted for safety and health issues. It is a commercially available technology and has been used for various projects at locations throughout the country. The LTC 1073 Vacuum Blasting Machine uses a high-capacity, direct-pressure blasting system which incorporates a continuous feed for the blast media. The blast media cleans the surface within the contained brush area of the blast. It incorporates a vacuum system which removes dust and debris from the surface as it is blasted. The safety and health evaluation during the testing demonstration focused on two main areas of exposure: dust and noise. Dust exposure during maintenance activities was minimal, but due to mechanical difficulties dust monitoring could not be conducted during operation. Noise exposure was significant. Further testing for each of these exposures is recommended because of the outdoor environment where the testing demonstration took place. This may cause the results to be inaccurate. It is feasible that the dust and noise levels will be higher in an enclosed environment. In addition, other safety and health issues found were ergonomics, heat stress, tripping hazards, electrical hazards, lockout/tagout, and arm-hand vibration.

1997-07-31T23:59:59.000Z

312

Focused ion beam direct fabrication of micro-optical elements: features compared with laser beam and electron beam direct writing  

E-Print Network (OSTI)

Three types of focused ion beam machine: focused ion beam milling (FIB milling), focused ion beam lithography (FIB lithography), and focused ion beam direct deposition (FIB deposition), are described in detail to compare ...

Fu, Yongqi

313

A Drive Laser for Multi-Bunch Photoinjector Operation  

Science Conference Proceedings (OSTI)

Numerous electron beam applications would benefit from increased average current without sacrificing beam brightness. Work is underway at LLNL to investigate the performance of X-band photoinjectors that would generate electron bunches at a rate matching the RF drive frequency, i.e. one bunch per RF cycle. A critical part of this effort involves development of photo-cathode drive laser technology. Here we present a new laser architecture that can generate pulse trains at repetition rates up to several GHz. This compact, fiber-based system is driven directly by the accelerator RF and so is inherently synchronized with the accelerating fields, and scales readily over a wide range of drive frequencies (L-band through X-band). The system will be required to produce 0.5 {mu}J, {approx}200 fs rise time, spatially and temporally shaped UV pulses designed to optimize the electron beam brightness. Presented is the current status of this system, producing 2 ps pulses from a continuous-wave source.

Gibson, D J; Cormier, E; Messerly, M J; Prantil, M A; Barty, C J

2012-05-11T23:59:59.000Z

314

Lower-hybrid heating and current drive on PLT  

SciTech Connect

Steady currents up to 165 kA for 3.5 seconds and 420 kA for 0.3 seconds have been maintained by 800 MHz lower hybrid waves. For line-averaged densities up to 7 x 10/sup 12/ cm/sup -3/ the current is maintained with no input power from the ohmic heating transformer. The waves are launched with an array of six waveguides. Measurements of X rays and electron cyclotron radiation show that the rf power produces and maintains a suprathermal tail of electrons apparently independent of the number of fast electrons in the plasma prior to turning on the rf power. Measurements of current-drive efficiency and the electron tail provide direct evidence for a resonant wave-particle interaction. The radial profile of the rf-sustained current inferred from x-ray measurements is peaked in the center of the plasma and appears to obey the same q-value restraints as the inductively driven ohmic heating current. Current drive is observed to be accompanied always by radiation at frequencies greater than or equal to ..omega../sub ce/ and less than or equal to ..omega../sub pe/. The connection between this radiation and the current-drive mechanism is under study.

Hooke, W.; Bernabei, S.; Boyd, D.

1983-02-01T23:59:59.000Z

315

Image fusion for a nighttime driving display  

E-Print Network (OSTI)

An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

Herrington, William Frederick

2005-01-01T23:59:59.000Z

316

Driving Efficiencies Track | Department of Energy  

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

Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Driving Efficiencies Track Tuesday April 17, 2012 From E-Mail to "The Stream" by Don Burke Taking Records Inventory Into the 21st Century by Lorie A. Robb Engineering and Operations Control: Embrace the Culture by Cheryl Bolen IT Project Management Framework by Denise Hill Wednesday April 18, 2012 Records Warehouse Operations and Records Storage for External Customers by Karen Hatch Preservation of Long-Term Temporary Records by Jeanie Gueretta Mobile Initiatives Effecting Change at Hanford by Don Stewart DOE's CIO's EWA by Sarah Gamage, Don Schade and Alan Andon Green IT 2012: Sustainable Electronics by Edwin Luevanos and Jeff Eagan Thursday April 19, 2012 Document Management and Control System by Melissa Ruth

317

Consider Steam Turbine Drives for Rotating Equipment  

SciTech Connect

This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

2006-01-01T23:59:59.000Z

318

Better Buildings Neighborhood Program: Driving Demand  

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

even know they have. This section explains how you can use effective marketing to drive demand for energy upgrades in your community. Following the lead of many Better Buildings...

319

Frequency modulation drive for a piezoelectric motor  

DOE Patents (OSTI)

A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

Mittas, Anthony (Albuquerque, NM)

2001-01-01T23:59:59.000Z

320

Using artificially generated data to evaluate statistical machine translation  

Science Conference Proceedings (OSTI)

Although Statistical Machine Translation (SMT) is now the dominant paradigm within Machine Translation, we argue that it is far from clear that it can outperform Rule-Based Machine Translation (RBMT) on small- to medium-vocabulary applications where ...

Manny Rayner; Paula Estrella; Pierrette Bouillon; Beth Ann Hockey; Yukie Nakao

2009-08-01T23:59:59.000Z

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


321

A hybrid type small 5-axis CNC milling machine  

E-Print Network (OSTI)

5-axis CNC milling machines are important in a number of industries ranging from aerospace to consumer-die-mold machining because they can deliver high machining accuracy with a spindle tilting capacity. Most of these ...

Son, Seung-Kil, 1964-

2002-01-01T23:59:59.000Z

322

Fast wave current drive on DIII-D  

SciTech Connect

The physics of electron heating and current drive with the fast magnetosonic wave has been demonstrated on DIII-D, in reasonable agreement with theoretical modeling. A recently completed upgrade to the fast wave capability should allow full noninductive current drive in steady state advanced confinement discharges and provide some current density profile control for the Advanced Tokamak Program. DIII-D now has three four-strap fast wave antennas and three transmitters, each with nominally 2 MW of generator power. Extensive experiments have been conducted with the first system, at 60 MHz, while the two newer systems have come into operation within the past year. The newer systems are configured for 60 to 120 MHz. The measured FWCD efficiency is found to increase linearly with electron temperature as {gamma} = 0.4 {times} 10{sup 18} T{sub eo} (keV) [A/m{sup 2}W], measured up to central electron temperature over 5 keV. A newly developed technique for determining the internal noninductive current density profile gives efficiencies in agreement with this scaling and profiles consistent with theoretical predictions. Full noninductive current drive at 170 kA was achieved in a discharge prepared by rampdown of the Ohmic current. Modulation of microwave reflectometry signals at the fast wave frequency is being used to investigate fast wave propagation and damping. Additionally, rf pick-up probes on the internal boundary of the vessel provide a comparison with ray tracing codes, with dear evidence for a toroidally directed wave with antenna phasing set for current drive. There is some experimental evidence for fast wave absorption by energetic beam ions at high cyclotron harmonic resonances.

deGrassie, J.S.; Petty, C.C.; Pinsker, R.I. [and others

1995-07-01T23:59:59.000Z

323

PHEV and Other Electric Drive Testing Results and Resources  

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

Advanced Vehicle Testing Activity PHEV and Other Electric Drive Testing Results and Resources Jim Francfort Electric Drive Session Alternative Fuels & Vehicles Las Vegas, Nevada -...

324

Microsoft Word - Compare Driving Styles_ ETEC Hymotion Prius...  

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

Driving intensity is the energy at the wheels used for propulsion. Recaptured energy through regenerative braking is not considered when calculating driving intensity....

325

Energy Department Announces $60 Million to Drive Affordable,...  

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

60 Million to Drive Affordable, Efficient Solar Power Energy Department Announces 60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News...

326

Energy Department Announces $60 Million to Drive Affordable,...  

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

0 Million to Drive Affordable, Efficient Solar Power Energy Department Announces 60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News...

327

The Transportation Leapfrog: Using Smart Phones to Collect Driving...  

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

Transportation Leapfrog: Using Smart Phones to Collect Driving Data and Model Fuel Economy in India Title The Transportation Leapfrog: Using Smart Phones to Collect Driving Data...

328

Secretary Moniz Announces New Biofuels Projects to Drive Cost...  

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

Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological...

329

Energy Department Invests to Drive Down Costs of Carbon Capture...  

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

to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in...

330

DOE - Office of Legacy Management -- La Pointe Machine and Tool...  

Office of Legacy Management (LM)

La Pointe Machine and Tool Co - MA 16 FUSRAP Considered Sites Site: LA POINTE MACHINE AND TOOL CO. (MA.16 ) Eliminated from consideration under FUSRAP Designated Name: Not...

331

Electric machine for hybrid motor vehicle - Energy Innovation ...  

A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet ...

332

John Hsu, Oak Ridge National Laboratory, Flux Coupling Machines...  

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

Flux Coupling Machines and Switched Reluctance Motors to Replace Permanent Magnets in Electric Vehicles John Hsu, Oak Ridge National Laboratory, Flux Coupling Machines and...

333

Hybrid MPI/OpenMP parallel support vector machine training  

E-Print Network (OSTI)

Jan 6, 2009 ... Support Vector Machines are a powerful machine learning technol- ..... to the precision recall curve were evaluated on the Challenge web-.

334

Multi-winding homopolar electric machine - Energy Innovation Portal  

A multi-winding homopolar electric machine and method for converting between mechanical energy and electrical energy. The electric machine includes a shaft defining ...

335

Ultraprecision machining of optics at Los Alamos  

Science Conference Proceedings (OSTI)

Ultraprecision machine tools are used at Los Alamos for single point diamond turning of optics and other precision parts. Measurements of a 50-mm-dia copper flat are used to illustrate the quality of a part which can be machined on the Moore No. 3 lathe. Measurements of a 0.4-m-dia aluminum mirror with a 20-m radius-of-curvature are presented as an example of a part machined on the Moore No. 5 lathe. A varying frequency sine wave grating is used to show a type of special optical grating which can be produced using the Pneumo lathe.

Rhorer, R.L.; Gauler, A.L.; Colston, E.W.; Ruhe, J.R.

1981-01-01T23:59:59.000Z

336

Electric machine for hybrid motor vehicle  

DOE Patents (OSTI)

A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet rotor, an uncluttered rotor spaced from the permanent magnet rotor, and at least one secondary core assembly. The power system also has a gearing arrangement for coupling the internal combustion engine to wheels on the vehicle thereby providing a means for the electric machine to both power assist and brake in relation to the output of the internal combustion engine.

Hsu, John Sheungchun (Oak Ridge, TN)

2007-09-18T23:59:59.000Z

337

Gas centrifuge with driving motor  

DOE Patents (OSTI)

1. A centrifuge for separating gaseous constituents of different masses comprising a vertical tubular rotor, means for introducing a gas mixture of different masses into said rotor and means for removing at least one of the gas components from the rotor, a first bearing means supporting said rotor at one end for rotational movement, a support, a damping bearing mounted on said support, a shaft fixed to said rotor at the opposite end and mechanically connecting said rotor to said damping bearing, a cup-shaped tube of electrically conductive, non-magnetic material in coaxial relationship with said shaft, the open end of said tube extending away from said rotor and the closed end of said tube being directly secured to the adjacent end of the rotor, an annular core of magnetic material fixedly mounted on said support so as to be disposed within said tube and around said shaft, and a second annular magnetic core with coils arranged thereon to receive polyphase current to produce a rotating magnetic field traversing the circumference of said tube, fixedly mounted on said support so as to surround said tube, the size of said first annular core and said second annular core being such as to permit limited radial displacement of said shaft and said tube.

Dancy, Jr., William H. (Charlottesville, VA)

1976-01-01T23:59:59.000Z

338

RF heating and current drive on NSTX with high  

SciTech Connect

NSTX is a small aspect ratio tokamak (R = 0.85 m, a = 0.65 m). The High Harmonic Fast Wave (HHFW) system is a 30 MHz, 12-element array capable of launching both symmetric and directional wave spectra for plasma heating and non-inductive current drive. It has delivered up to 6 MW for short pulses and has routinely operated at ~3 MW for 100-400 ms pulses. Results include strong, centrally-peaked electron heating in both D and He plasmas for both high and low phase velocity spectra. H-modes were obtained with application of HHFW power alone, with stored energy doubling after the L-H transition. Beta poloidal as large as unity has been obtained with significant fractions (0.4) of bootstrap current. Differences in the loop voltage are observed depending on whether the array is phased to drive current in the co- or counter-current directions. A fast ion tail with energies extending up to 140 keV has been observed when HHFW interacts with 80 keV neutral beams; neutron rate and lost ion measurements, as well as modeling, indicate significant power absorption by the fast ions. Radial rf power deposition and driven current profiles have been calculated with ray tracing and kinetic full-wave codes and compared with measurements.

Ryan, Philip Michael [ORNL; Peng, Yueng Kay Martin [ORNL

2003-01-01T23:59:59.000Z

339

Rim-drive cable-aligned heliostat collector system  

DOE Patents (OSTI)

Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

Dolan, J.E.; Sands, T.D.

1982-09-30T23:59:59.000Z

340

Machine Partitions | Argonne Leadership Computing Facility  

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

BG/Q Drivers Status Machine Overview Machine Partitions Torus Network Data Storage & File Systems Compiling & Linking Queueing & Running Jobs Data Transfer Debugging & Profiling Performance Tools & APIs Software & Libraries IBM References Intrepid/Challenger/Surveyor Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Machine Partitions Mira As our production machine, the queues on Mira are very similar to those on our BG/P system Intrepid. In the prod-capability queue, partition sizes of 8192, 12288, 16384, 32768, and 49152 nodes are available. All partitions have a full torus network. The max runtime of jobs submitted to the

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


341

Computational aesthetic evaluation: steps towards machine creativity  

Science Conference Proceedings (OSTI)

Programmer and artists have invented a broad range of generative systems that create art and music. These powerful systems sometimes produce results that surprise their human collaborators, but the surprises are not always welcome or useful. Machine ...

Philip Galanter

2012-08-01T23:59:59.000Z

342

Machine Learning for Sequential Data: A Review  

Science Conference Proceedings (OSTI)

Statistical learning problems in many fields involve sequential data. This paper formalizes the principal learning tasks and describes the methods that have been developed within the machine learning research community for addressing these problems. ...

Thomas G. Dietterich

2002-08-01T23:59:59.000Z

343

CCG supertags in factored statistical machine translation  

Science Conference Proceedings (OSTI)

Combinatorial Categorial Grammar (CCG) supertags present phrase-based machine translation with an opportunity to access rich syntactic information at a word level. The challenge is incorporating this information into the translation process. Factored ...

Alexandra Birch; Miles Osborne; Philipp Koehn

2007-06-01T23:59:59.000Z

344

March 8, 2006: Sandia's Z Machine  

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

March 8, 2006The Department's Sandia National Laboratories announces that its Z machine has produced plasmas that exceed temperatures of 2 billion degrees Kelvin-hotter than the interiors of stars....

345

An environment machine for the ??-calculus  

Science Conference Proceedings (OSTI)

We introduce a natural deduction-like formalisation of Parigot's ??-calculus. From this, we derive an environment machine that allows any well-typed ??-term to be reduced to its weak head normal form. The soundness and completeness ...

Philippe De Groote

1998-12-01T23:59:59.000Z

346

Machine translation system combination by confusion forest  

Science Conference Proceedings (OSTI)

The state-of-the-art system combination method for machine translation (MT) is based on confusion networks constructed by aligning hypotheses with regard to word similarities. We introduce a novel system combination framework in which hypotheses are ...

Taro Watanabe; Eiichiro Sumita

2011-06-01T23:59:59.000Z

347

A machine learning system for recognizing subclasses  

Science Conference Proceedings (OSTI)

Thematic information extraction from remote sensing images is a complex task. In this demonstration, we present *Miner machine learning system. In particular, we demonstrate an advanced subclass recognition algorithm that is specifically designed to ...

Ranga Raju Vatsavai

2012-07-01T23:59:59.000Z

348

Machine Status | Argonne Leadership Computing Facility  

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

Machine Status Science on Mira Cores Core Hours Atomistic Simulations of Nanoscale Oxides and Oxide Interfaces 65536 1297201.9256901 Lattice QCD 16384 28881.396622179 MockBOSS :...

349

Revisiting parallel rendering for shared memory machines  

Science Conference Proceedings (OSTI)

Increasing the core count of CPUs to increase computational performance has been a significant trend for the better part of a decade. This has led to an unprecedented availability of large shared memory machines. Programming paradigms and systems are ...

B. Nouanesengsy; J. Ahrens; J. Woodring; H. Shen

2011-04-01T23:59:59.000Z

350

Virtualisation: Real security for virtual machines  

Science Conference Proceedings (OSTI)

Server virtualisation offers many real benefits to enterprises, maximising hardware resources and providing significant cost and energy savings. But there is a downside: all of the security issues we battle on networked systems also plague virtual machines, ...

Ulf Mattsson

2009-04-01T23:59:59.000Z

351

Effect of Side Permanent Magnets for Reluctance Interior Permanent Magnet Reluctance Machines  

Science Conference Proceedings (OSTI)

A traditional electric machine uses two dimensional magnetic flux paths in its rotor. This paper presents the development work on the utilization of the third dimension of a rotor. As an example, the air gap flux of a radial gap interior permanent magnet motor can be significantly enhanced by additional permanent magnets (PM) mounted at the sides of the rotor. A prototype motor built with this concept provided higher efficiency and required a shorter stator core length for the same power output as the Toyota/Prius traction drive motor.

Hsu, John S [ORNL; Lee, Seong T [ORNL; Wiles, Randy H [ORNL; Coomer, Chester [ORNL; Lowe, Kirk T [ORNL

2007-01-01T23:59:59.000Z

352

DESIGN FOR AN AUTOGRAPHICALLY RECORDING TENSILE MACHINE  

SciTech Connect

An improved "hard" type tensile machine is described, designed primarily for metallurgical usage. Compactness and mechanical simplicity are combined with maximum accessibility of the load measuring device and specimen, and the load is measured with an electro-mechanical dynamometer which is easily adapted into a system for autographically recording ihe load-elongaticn curve. The machine should be particularly useful for dry-box or hot-cell work. (auth)

Adams, M.A.

1959-10-01T23:59:59.000Z

353

Objective methods of assessment of influence of alcohol on driving safety: study performed driving simulators  

Science Conference Proceedings (OSTI)

The paper is focused on an introduction of a set of experiments focused on objective methods used for detection of driving impairment caused by influence of different level of alcohol in blood. It introduces the initial experiments which were performed ... Keywords: alcohol, driver's impairment, driving simulation

Roman Pieknk; Stanislav Novotny; Petr Bouchner

2007-09-01T23:59:59.000Z

354

Drive Less, Save More | Department of Energy  

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

Drive Less, Save More Drive Less, Save More Drive Less, Save More May 24, 2011 - 12:31pm Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For someone who works in the Vehicle Technologies Program, I actually don't spend that much time in my automobile. I usually get around using a combination of public transit, my bike, and my own two feet. But I'm an exception. In the U.S., the vehicle miles travelled per person is actually twice as high as it is in Western Europe and three times higher than in Japan. However, alternatives to using your car have a wealth of benefits. In addition to reducing petroleum consumption, they can lower greenhouse gas emissions, improve air quality, decrease stress, and bring communities together. Fortunately, there are a variety of ways to minimize the distance

355

DistributionDrive | Open Energy Information  

Open Energy Info (EERE)

DistributionDrive DistributionDrive Jump to: navigation, search Name DistributionDrive Place Addison, Texas Zip 75001 Product Supplier of Biodiesel, Straight Vegetable Oil (SVO), Recycled Vegetable Oil (WVO) and Engine Conversion Kits to use this fuels. Coordinates 38.477365°, -80.412149° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.477365,"lon":-80.412149,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

356

Drive Less, Save More | Department of Energy  

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

Drive Less, Save More Drive Less, Save More Drive Less, Save More May 24, 2011 - 12:31pm Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For someone who works in the Vehicle Technologies Program, I actually don't spend that much time in my automobile. I usually get around using a combination of public transit, my bike, and my own two feet. But I'm an exception. In the U.S., the vehicle miles travelled per person is actually twice as high as it is in Western Europe and three times higher than in Japan. However, alternatives to using your car have a wealth of benefits. In addition to reducing petroleum consumption, they can lower greenhouse gas emissions, improve air quality, decrease stress, and bring communities together. Fortunately, there are a variety of ways to minimize the distance

357

Microsoft Word - ORNL Hard Drives Final 08132010  

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

Inspections and Special Inquires Inspections and Special Inquires Inspection Report Internal Controls over Computer Hard Drives at the Oak Ridge National Laboratory INS-O-10-03 August 2010 Department of Energy Washington, DC 20585 August 16, 2010 MEMORANDUM FOR THE DIRECTOR, OFFICE OF SCIENCE FROM: Sandra D. Bruce Assistant Inspector General for Inspections and Special Inquiries SUBJECT: INFORMATION: Inspection Report on "Internal Controls over Computer Hard Drives at the Oak Ridge National Laboratory" BACKGROUND The Department of Energy's (Department) Oak Ridge National Laboratory (ORNL) in Oak

358

Harnessing Machine Learning to Improve the Success Rate of Stimuli Generation  

Science Conference Proceedings (OSTI)

The initial state of a design under verification has a major impact on the ability of stimuli generators to successfully generate the requested stimuli. For complexity reasons, most stimuli generators use sequential solutions without planning ahead. ... Keywords: Functional verification, coverage analysis, coverage directed generation, machine learning, Bayesian networks, Fourier transforms.

Shai Fine; Ari Freund; Itai Jaeger; Yishay Mansour; Yehuda Naveh; Avi Ziv

2006-11-01T23:59:59.000Z

359

Contributed paper: Robust digital watermarking in PDTDFB domain based on least squares support vector machine  

Science Conference Proceedings (OSTI)

Geometric distortion is known as one of the most difficult attacks to resist, for it can desynchronize the location of the watermark and hence causes incorrect watermark detection. It is a challenging work to design a robust image watermarking scheme ... Keywords: Gaussian-Hermite moment, Geometric distortion, Image watermarking, Least squares support vector machine (LS-SVM), Shiftable complex directional pyramid (PDTDFB)

Hong-Ying Yang, Xiang-Yang Wang, Yan Zhang, Miao E-Nuo

2013-10-01T23:59:59.000Z

360

SOME ASPECTS OF HIGH TEMPERATURE PLASMA RESEARCH WITH THE MIRROR MACHINE  

SciTech Connect

The major effort of the Livermore Mirror Machine group is directed toward study of plasma stabllity and confinement in mirror geometries. The status and radial density distribution and diffusion of confined plasma are briefly summarized. The ALICE Experiment (Adiabatic Lowenergy Injection and Capture Experiment) is discussed in some detnil. (W.D.M.)

Post, R.F.

1960-01-20T23:59:59.000Z

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


361

Data Protection and Rapid Recovery From Attack With A Virtual Private File Server and Virtual Machine Appliances  

E-Print Network (OSTI)

When a personal computer is attacked, both personal data like digital photos and system configuration information like installed programs can be lost. To protect personal data, we house it in a file server virtual machine running on the same physical host and export it to other virtual machines running on the same host. We implement this private file server virtual machine using a modified version of an NFS server installed in a virtual machine under various virtualization environments such as Xen and VMware. We also demonstrate that by placing the users applications in a virtual machine rather than directly on the base machine we can provide near instant recovery of system configuration information. We quantify the costs of this architecture by comparing benchmarks running directly on a base operating system and accessing data in a local filesystem to those running in a guest operating system and accessing data in an NFS partition mounted from a file server virtual machine. We find that for Xen the overhead of read intensive workloads is at most 5 % and for write intensive workloads the overhead is at most 24%. For system benchmarks that stress CPU and memory performance, we see no noticeable degradation.

Jeanna N. Matthews; Jason J. Herne; Todd M. Deshane; Patty A. Jablonski; Leslie R. Cherian; Mike T. Mccabe

2005-01-01T23:59:59.000Z

362

Baseline Test Specimen Machining Report  

SciTech Connect

The Next Generation Nuclear Plant (NGNP) Project is tasked with selecting a high temperature gas reactor technology that will be capable of generating electricity and supplying large amounts of process heat. The NGNP is presently being designed as a helium-cooled high temperature gas reactor (HTGR) with a large graphite core. The graphite baseline characterization project is conducting the research and development (R&D) activities deemed necessary to fully qualify nuclear-grade graphite for use in the NGNP reactor. Establishing nonirradiated thermomechanical and thermophysical properties by characterizing lot-to-lot and billet-to-billet variations (for probabilistic baseline data needs) through extensive data collection and statistical analysis is one of the major fundamental objectives of the project. The reactor core will be made up of stacks of graphite moderator blocks. In order to gain a more comprehensive understanding of the varying characteristics in a wide range of suitable graphites, any of which can be classified as nuclear grade, an experimental program has been initiated to develop an extensive database of the baseline characteristics of numerous candidate graphites. Various factors known to affect the properties of graphite will be investigated, including specimen size, spatial location within a graphite billet, specimen orientation within a billet (either parallel to [P] or transverse to [T] the long axis of the as-produced billet), and billet-to-billet variations within a lot or across different production lots. Because each data point is based on a certain position within a given billet of graphite, particular attention must be paid to the traceability of each specimen and its spatial location and orientation within each billet. The evaluation of these properties is discussed in the Graphite Technology Development Plan (Windes et. al, 2007). One of the key components in the evaluation of these graphite types will be mechanical testing on specimens drawn from carefully controlled sections of each billet. To this end, this report will discuss the machining of the first set of test specimens that will be evaluated in this program through tensile, compressive, and flexural testing. Validation that the test specimens have been produced to the tolerances required by the applicable ASTM standards, and to the quality control levels required by this program, will demonstrate the viability of sending graphite to selected suppliers that will provide valuable and certifiable data to future data sets that are integral to the NGNP program and beyond.

mark Carroll

2009-08-01T23:59:59.000Z

363

Broken Bar Detection in Synchronous Machines Based Wind Energy Conversion System  

E-Print Network (OSTI)

Electrical machines are subject to different types of failures. Early detection of the incipient faults and fast maintenance may prevent costly consequences. Fault diagnosis of wind turbine is especially important because they are situated at extremely high towers and therefore inaccessible. For offshore plants, bad weather can prevent any repair actions for several weeks. In some of the new wind turbines synchronous generators are used and directly connected to the grid without the need of power converters. Despite intensive research efforts directed at rotor fault diagnosis in induction machines, the research work pertinent to damper winding failure of synchronous machines is very limited. This dissertation is concerned with the in-depth study of damper winding failure and its traceable symptoms in different machine signals and parameters. First, a model of a synchronous machine with damper winding based on the winding function approach is presented. Next, simulation and experimental results are presented and discussed. A specially designed inside-out synchronous machine with a damper winding is employed for the experimental setup. Finally, a novel analytical method is developed to predict the behavior of the left sideband amplitude for different numbers and locations of the broken bars. This analysis is based on the magnetic field theory and the unbalanced multiphase circuits. It is found that due to the asymmetrical structure of damper winding, the left sideband component in the stator current spectrum of the synchronous machine during steady state asynchronous operation is not similar to that of the induction machine with broken bars. As a result, the motor current signature analysis (MCSA) for detection rotor failures in the induction machine is usable to detect broken damper bars in synchronous machines. However, a novel intelligent-systems based approach is developed that can identify the severity of the damper winding failure. This approach potentially can be used in a non-invasive condition monitoring system to monitor the deterioration of a synchronous motor damper winding as the number of broken bars increase over time. Some other informative features such as speed spectrum, transient time, torque-speed curve and rotor slip are also found for damper winding diagnosis.

Rahimian, Mina Mashhadi

2011-08-01T23:59:59.000Z

364

Machine Maintenance Integrated Performance Support System  

SciTech Connect

The objectives of this partnership project were to develop a preventive maintenance checklist program, a troubleshooting system for the Vertical Turning Center (VTC)-5, an on-line manual, and to integrate these components with a custom browser that would run on the VTC-5 machine's controller and would support future internet/intranet delivery. Kingsbury provided subject matter experts from engineering, manufacturing, and technical support. They also provided photographs, schematics, and CAD drawings, which AlliedSignal Federal Manufacturing and Technologies (ASFM and T) digitized for use in the final program. Information from The Kingsbury troubleshooting experts were interviewed regarding symptoms and root causes of system malfunctions This knowledge was captured and from it, fault trees were developed. These trees were then incorporated into the EPSS as a troubleshooting tool. The troubleshooting portion of the system presents simple questions to the machine operator in order to determine the likely cause or causes of malfunctions and then recommends systematic corrective actions. The on-line reference manual, covering operations and maintenance, provides text and illustrations to the machine operator in a traditional structure, but additionally offers the capability to search voluminous amounts of technical data and retrieve specific information on request. The maintenance portion of the EPSS includes checklists that are displayed daily, weekly, monthly, and annually, as appropriate, on the VTC-5 controller screen. The controller software is unavailable for machining parts until the machine tool operator goes through and checks off all of the checklist items. This project provided the team with a detailed understanding of the knowledge and information required to produce and support advanced machine tools. In addition, it resulted in the design and construction of a prototype VTC-5 EPSS containing all the logic and interfaces necessary to integrate operations and maintenance information from other Kingsbury machine tools.

Bohley, M.C.; Schwartz, M.E.

1998-03-11T23:59:59.000Z

365

Conditions driving chemical freeze-out  

E-Print Network (OSTI)

We propose the entropy density as the thermodynamic condition driving best the chemical freeze-out in heavy-ion collisions. Taking its value from lattice calculations at zero chemical potential, we find that it is excellent in reproducing the experimentally estimated freeze-out parameters. The two characteristic endpoints in the freeze-out diagram are reproduced as well.

A. Tawfik

2004-10-28T23:59:59.000Z

366

Query processing techniques for solid state drives  

Science Conference Proceedings (OSTI)

Solid state drives perform random reads more than 100x faster than traditional magnetic hard disks, while offering comparable sequential read and write bandwidth. Because of their potential to speed up applications, as well as their reduced power consumption, ... Keywords: columnar storage, flash memory, join index, late materialization, semi-join reduction, ssd

Dimitris Tsirogiannis; Stavros Harizopoulos; Mehul A. Shah; Janet L. Wiener; Goetz Graefe

2009-06-01T23:59:59.000Z

367

Oscillation control system for electric motor drive  

DOE Patents (OSTI)

A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

Slicker, J.M.; Sereshteh, A.

1988-08-30T23:59:59.000Z

368

Oscillation control system for electric motor drive  

DOE Patents (OSTI)

A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

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

1988-01-01T23:59:59.000Z

369

Multilevel converters for large electric drives  

SciTech Connect

Traditional two-level high frequency pulse width modulation (PWM) inverters for motor drives have several problems associated with their high frequency switching which produces common-mode voltage and high voltage change (dV/dt) rates to the motor windings. Multilevel inverters solve these problems because their devices can switch at a much lower frequency. Two different multilevel topologies are identified for use as a converter for electric drives, a cascade inverter with separate dc sources and a back-to-back diode clamped converter. The cascade inverter is a natural fit for large automotive all electric drives because of the high VA ratings possible and because it uses several levels of dc voltage sources which would be available from batteries or fuel cells. The back to back diode damped converter is ideal where a source of ac voltage is available such as a hybrid electric vehicle. Simulation and experimental results show the superiority of these two converters over PWM based drives.

Tolbert, L.M.; Peng, F.Z.

1997-11-01T23:59:59.000Z

370

Directions to: University Health Associates Physician Office Center  

E-Print Network (OSTI)

Directions to: · University Health Associates Physician Office Center · West Virginia University Eye Institute · West Virginia University Hospitals Driving Directions From Interstate 79: Take Exit will direct you to the West Virginia University Hospital, the Emergency Department), the Eye Center

Mohaghegh, Shahab

371

International Conference on Machine Control & Guidance 2008 1 Automatic Guidance of Track Laying Machines with  

E-Print Network (OSTI)

laying machines, coordinate systems, error detection, work process driven data management, quality. Its outstanding result, the track management system Toporail, was developed under the operational lead on Machine Control & Guidance 2008 5 Figure 5: Maintenance process driven data management: Data updates

372

Cost Effective Machining Of Ceramics (CEMOC)  

SciTech Connect

The purpose of the CEMOC program was to support U.S. industry needs in fabricating precision components, from difficult to machine materials, while maintaining and enhancing the precision manufacturing skills of the Oak Ridge Complex. Oak Ridge and partner company personnel worked in a team relationship wherein each contributed equally to the success of the program. In general, Oak Ridge contributed a wider range of expertise to a given task while the companies provided operations-specific equipment and shop-floor services. Process control technologies, machining procedures and parameters, and coolant-related environmental tasks were the primary focus areas. The companies were very pleased with the results of the CRADAs and are planning on continuing the relationships. Finish machining operations contribute the majority of the costs associated with fabricating high quality ceramic products. These components are typically used in harsh environments such as diesel engines, defense machinery, and automotive components. The required finishing operations involve a variety of technologies including process controls, machine coolants, product certification, etc. and are not limited only to component grinding methods. The broad range of manufacturing problem solving expertise available in Oak Ridge provided resources that were far beyond what are typically available to the CRADA partners. These partners contributed equipment, such as state-of-the-art machine tools, and operation-specific experience base. In addition, addressing these challenging tasks enabled Oak Ridge personnel to maintain familiarity with rapidly advancing technologies, such as those associated with computer control systems.

Barkman, W.E.

1997-04-18T23:59:59.000Z

373

Trunnion Collar Removal Machine - Gap Analysis Table  

SciTech Connect

The purpose of this document is to review the existing the trunnion collar removal machine against the ''Nuclear Safety Design Bases for License Application'' (NSDB) [Ref. 10] requirements and to identify codes and standards and supplemental requirements to meet these requirements. If these codes and standards can not fully meet these requirements then a ''gap'' is identified. These gaps will be identified here and addressed using the ''Trunnion Collar Removal Machine Design Development Plan'' [Ref. 15]. The codes and standards, supplemental requirements, and design development requirements for the trunnion collar removal machine are provided in the gap analysis table (Appendix A, Table 1). Because the trunnion collar removal machine is credited with performing functions important to safety (ITS) in the NSDB [Ref. 10], design basis requirements are applicable to ensure equipment is available and performs required safety functions when needed. The gap analysis table is used to identify design objectives and provide a means to satisfy safety requirements. To ensure that the trunnion collar removal machine performs required safety functions and meets performance criteria, this portion of the gap analysis tables supplies codes and standards sections and the supplemental requirements and identifies design development requirements, if needed.

M. Johnson

2005-06-27T23:59:59.000Z

374

Evaluation of half wave induction motor drive for use in passenger vehicles. Final report  

SciTech Connect

This report describes research performed to devise and design a lower cost inverter-induction motor drive for electrical propulsion of passenger vehicles. A two-phase inverter-motor system is recommended. It is predicted to provide comparable vehicle performance, improved reliability and nearly a 10% cost advantage for a high production vehicle because of the reduction in total parts count, decreased total rating of the power semiconductor switches and somewhat simpler control hardware compared to the conventional three-phase bridge inverter-motor drive system. The major disadvantages of the two-phase inverter-motor drive are that the tow-phase motor is larger and more expensive than a three-phase machine, the design of snubbers for the power switches is difficult because motor lead and bifilar winding leakage inductances produce higher transient voltages, and the torque pulsations are relatively large because of the necessity to limit the inverter switching frequency to achieve high efficiency. An actuall model of the two-phase system must be constructed and evaluated. The most challenging engineering design task will be to design the inverter, motor and snubber circuits to minimize transient voltages with high system efficiency.

Hoft, R.G.; Kawamura, A.; Goodarzi, A.; Yang, G.Q.; Erickson, C.L.

1985-05-01T23:59:59.000Z

375

Alternative Fuels Data Center: Indiana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Indiana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Indiana Laws and Incentives for Driving / Idling

376

Alternative Fuels Data Center: Delaware Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Delaware Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Delaware Laws and Incentives for Driving / Idling

377

Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Wyoming Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Wyoming Laws and Incentives for Driving / Idling

378

Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Oklahoma Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Oklahoma Laws and Incentives for Driving / Idling

379

Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Hawaii Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Hawaii Laws and Incentives for Driving / Idling

380

Alternative Fuels Data Center: Virginia Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Virginia Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Virginia Laws and Incentives for Driving / Idling

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


381

Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Tennessee Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Tennessee Laws and Incentives for Driving / Idling

382

Alternative Fuels Data Center: Oregon Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Oregon Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Oregon Laws and Incentives for Driving / Idling

383

Alternative Fuels Data Center: Texas Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Texas Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Texas Laws and Incentives for Driving / Idling

384

Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Nebraska Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Nebraska Laws and Incentives for Driving / Idling

385

Alternative Fuels Data Center: Maine Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Maine Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Maine Laws and Incentives for Driving / Idling

386

Alternative Fuels Data Center: Federal Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Federal Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Federal Laws and Incentives for Driving / Idling

387

Alternative Fuels Data Center: Florida Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Florida Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Florida Laws and Incentives for Driving / Idling

388

Alternative Fuels Data Center: Iowa Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Iowa Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Iowa Laws and Incentives for Driving / Idling

389

Alternative Fuels Data Center: Maryland Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Maryland Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Maryland Laws and Incentives for Driving / Idling

390

Alternative Fuels Data Center: Alaska Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Alaska Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Alaska Laws and Incentives for Driving / Idling

391

Alternative Fuels Data Center: Vermont Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Vermont Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Vermont Laws and Incentives for Driving / Idling

392

Vehicle Technologies Office: Fact #452: January 15, 2007 Driving  

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

2: January 15, 2: January 15, 2007 Driving Differences to someone by E-mail Share Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Facebook Tweet about Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Twitter Bookmark Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Google Bookmark Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Delicious Rank Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on Digg Find More places to share Vehicle Technologies Office: Fact #452: January 15, 2007 Driving Differences on AddThis.com... Fact #452: January 15, 2007 Driving Differences Those living in the center city drive fewer miles in a day than those in

393

Drive piston assembly for a valve actuator assembly  

DOE Patents (OSTI)

A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

Sun, Zongxuan (Troy, MI)

2010-02-23T23:59:59.000Z

394

Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Minnesota Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Minnesota Laws and Incentives for Driving / Idling

395

Alternative Fuels Data Center: Missouri Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Missouri Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Missouri Laws and Incentives for Driving / Idling

396

Alternative Fuels Data Center: Utah Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Utah Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Utah Laws and Incentives for Driving / Idling

397

Alternative Fuels Data Center: Idaho Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Idaho Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Idaho Laws and Incentives for Driving / Idling

398

Alternative Fuels Data Center: Illinois Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Illinois Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Illinois Laws and Incentives for Driving / Idling

399

Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Kentucky Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Kentucky Laws and Incentives for Driving / Idling

400

Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Louisiana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Louisiana Laws and Incentives for Driving / Idling

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


401

Alternative Fuels Data Center: Arizona Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Arizona Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Arizona Laws and Incentives for Driving / Idling

402

Alternative Fuels Data Center: Nevada Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Nevada Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Nevada Laws and Incentives for Driving / Idling

403

Alternative Fuels Data Center: Montana Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Montana Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Montana Laws and Incentives for Driving / Idling

404

Alternative Fuels Data Center: Colorado Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Colorado Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Colorado Laws and Incentives for Driving / Idling

405

Alternative Fuels Data Center: Kansas Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Kansas Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Kansas Laws and Incentives for Driving / Idling

406

Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Wisconsin Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Wisconsin Laws and Incentives for Driving / Idling

407

Final Report on Control Algorithm to Improve the Partial-Load Efficiency of Surface PM Machines with Fractional-Slot Concentrated Windings  

DOE Green Energy (OSTI)

Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

McKeever, John W [ORNL; Reddy, Patel [University of Wisconsin; Jahns, Thomas M [ORNL

2007-05-01T23:59:59.000Z

408

FINAL REPORT ON CONTROL ALGORITHM TO IMPROVE THE PARTIAL-LOAD EFFICIENCY OFSURFACE PM MACHINES WITH FRACTIONAL-SLOT CONCENTRATED WINDINGS  

SciTech Connect

Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

Reddy, P.B.; Jahns, T.M.

2007-04-30T23:59:59.000Z

409

Study and Analysis 100-car Naturalistic Driving Data Amanda Justiniano (Dr. Eliza Y. Du), Department of Electrical and Computer Engineering, Purdue  

E-Print Network (OSTI)

Study and Analysis 100-car Naturalistic Driving Data Amanda Justiniano (Dr. Eliza Y. Du), Department of Electrical and Computer Engineering, Purdue School of Engineering, Indianapolis, IN 46202 Every uses facilities such as car simulators, Drive Safety DS-600c, directed towards the research

Zhou, Yaoqi

410

Spectral Effects on Fast Wave Core Heating and Current Drive  

SciTech Connect

Recent results obtained with high harmonic fast wave (HHFW) heating and current drive (CD) on NSTX strongly support the hypothesis that the onset of perpendicular fast wave propagation right at or very near the launcher is a primary cause for a reduction in core heating efficiency at long wavelengths that is also observed in ICRF heating experiments in numerous tokamaks. A dramatic increase in core heating efficiency was first achieved in NSTX L-mode helium majority plasmas when the onset for perpendicular wave propagation was moved away from the antenna and nearby vessel structures. Efficient core heating in deuterium majority L mode and H mode discharges, in which the edge density is typically higher than in comparable helium majority plasmas, was then accomplished by reducing the edge density in front of the launcher with lithium conditioning and avoiding operational points prone to instabilities. These results indicate that careful tailoring of the edge density profiles in ITER should be considered to limit rf power losses to the antenna and plasma facing materials. Finally, in plasmas with reduced rf power losses in the edge regions, the first direct measurements of high harmonic fast wave current drive were obtained with the motional Stark effect (MSE) diagnostic. The location and radial dependence of HHFW CD measured by MSE are in reasonable agreement with predictions from both full wave and ray tracing simulations.

C.K. Phillips, R.E. Bell, L.A. Berry, P.T. Bonoli, R.W. Harvey, J.C. Hosea, E.F. Jaeger, B.P. LeBlanc, P.M. Ryan, G. Taylor, E.J. Valeo, J.R. Wilson, J.C. Wright, H. Yuh, and the NSTX Team

2009-05-11T23:59:59.000Z

411

Proceedings of the 35th conference on Winter simulation: driving innovation: driving innovation  

Science Conference Proceedings (OSTI)

The 2003 Winter Simulation Conference (WSC) continues a thirty-six year tradition as the premier event in discrete-event and combined discrete-continuous simulation. The conference theme, Driving Innovation, invites you to push the boundaries and find ...

David Ferrin; Douglas J. Morrice

2003-12-01T23:59:59.000Z

412

Machine Overview | Argonne Leadership Computing Facility  

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

BG/Q Drivers Status Machine Overview Machine Partitions Torus Network Data Storage & File Systems Compiling & Linking Queueing & Running Jobs Data Transfer Debugging & Profiling Performance Tools & APIs Software & Libraries IBM References Intrepid/Challenger/Surveyor Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Machine Overview Blue Gene /Q systems are composed of login nodes, I/O nodes, and compute nodes. Login Nodes Login and compile nodes are IBM Power 7-based systems running Red Hat Linux and are the user's interface to a Blue Gene/Q system. This is where users login, edit files, compile, and submit jobs. These are shared resources

413

RHIC Machine/Detector Planning Meetings  

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

RHIC Machine/Detector Planning Meeting RHIC Machine/Detector Planning Meeting RHIC STAR PHENIX RHIC STAR PHENIX BNL Home Page C-AD Home Page C-AD ES&F Division BNL Physics Department RHIC Run History Super Conducting Magnet Division Run 14 Scheduling Physicist Home Page NPP PAC Run 13 Recommendations CAD Power Run 11-Run 13 Off-line CNI Polarization Results APEX for Run 13 RHIC Machine/Detector Meetings for Run 12 FY02-Present C-AD Energy Use Plots Cryo Power Run 11-Run 13 H-jet Target Results APEX Nov. 19-20, 2012 Workshop for Run 13 RHIC Run 13 Run Home Page (pp) FY10-Present BNL Energy Use Plot Cryo Temperatures Latest Luminosity Plots BNL Current Energy Use (BNL Intranet only and requires password) RHIC Retreat 2012

414

Gallant Precision Machining GPM | Open Energy Information  

Open Energy Info (EERE)

Gallant Precision Machining GPM Gallant Precision Machining GPM Jump to: navigation, search Name Gallant Precision Machining (GPM) Place Hsinchu, Taiwan Sector Solar Product Engaged in the design and manufacture of solar cell manufacturing equpiment. Coordinates 24.69389°, 121.148064° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":24.69389,"lon":121.148064,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

415

Micro-machined thermo-conductivity detector  

DOE Patents (OSTI)

A micro-machined thermal conductivity detector for a portable gas chromatograph. The detector is highly sensitive and has fast response time to enable detection of the small size gas samples in a portable gas chromatograph which are in the order of nanoliters. The high sensitivity and fast response time are achieved through micro-machined devices composed of a nickel wire, for example, on a silicon nitride window formed in a silicon member and about a millimeter square in size. In addition to operating as a thermal conductivity detector, the silicon nitride window with a micro-machined wire therein of the device can be utilized for a fast response heater for PCR applications.

Yu, Conrad (Antioch, CA)

2003-01-01T23:59:59.000Z

416

Multi-winding homopolar electric machine  

SciTech Connect

A multi-winding homopolar electric machine and method for converting between mechanical energy and electrical energy. The electric machine includes a shaft defining an axis of rotation, first and second magnets, a shielding portion, and a conductor. First and second magnets are coaxial with the shaft and include a charged pole surface and an oppositely charged pole surface, the charged pole surfaces facing one another to form a repulsive field therebetween. The shield portion extends between the magnets to confine at least a portion of the repulsive field to between the first and second magnets. The conductor extends between first and second end contacts and is toroidally coiled about the first and second magnets and the shield portion to develop a voltage across the first and second end contacts in response to rotation of the electric machine about the axis of rotation.

Van Neste, Charles W

2012-10-16T23:59:59.000Z

417

New and Underutilized Technology: Vending Machine Occupancy Sensors |  

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

Vending Machine Occupancy Sensors Vending Machine Occupancy Sensors New and Underutilized Technology: Vending Machine Occupancy Sensors October 7, 2013 - 9:09am Addthis The following information outlines key deployment considerations for vending machine occupancy sensors within the Federal sector. Benefits Vending machine occupancy sensors detect when no people are in the vicinity and powers down beverage vending machines. These systems do not completely turn off compressor, but reduce their run times. Application Vending machine occupancy sensors are applicable in most building categories where vending machines are present. Key Factors for Deployment Occupancy sensors or similar features should be an integral part of new vending machine purchases. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

418

High slot utilization systems for electric machines  

DOE Patents (OSTI)

Two new High Slot Utilization (HSU) Systems for electric machines enable the use of form wound coils that have the highest fill factor and the best use of magnetic materials. The epoxy/resin/curing treatment ensures the mechanical strength of the assembly of teeth, core, and coils. In addition, the first HSU system allows the coil layers to be moved inside the slots for the assembly purpose. The second system uses the slided-in teeth instead of the plugged-in teeth. The power density of the electric machine that uses either system can reach its highest limit.

Hsu, John S (Oak Ridge, TN)

2009-06-23T23:59:59.000Z

419

Passive machine augmented composite for multifunctional properties  

E-Print Network (OSTI)

This dissertation studies by experiment and numerical analysis an advanced composite material (Machine Augmented Composite or MAC) for enhancement of the passive damping while maintaining its stiffness. This MAC is composed of a pre-buckled wall structure placed within a viscoelastic matrix. The pre-buckled machine can contain viscous fluids for additional energy dissipation. For the experiments, the MAC was fabricated by using rigid and soft polyurethane as a machine and matrix material respectively. Various viscosity fluids (0.83 ~ 4730 cps) filled the inner-channel of the machine structure. Dynamic properties such as tan ?? and the loss modulus (E") of the composite were measured and compared with those of a homogeneous matrix sample over a frequency range of 0.1 to 100 Hz at room temperature through load-controlled cyclic testing. Measured tan ?? and loss modulus values for the composite were higher than those of the matrix alone in the 1 to 40 Hz range. However the viscous fluid effects on the overall damping properties were small. The performance of a theoretical MAC was explored through numerical analysis. The amount of inner-channel gap closure was calculated for various matrix Poisson??s ratios, for various Young??s modulus ratios between the machine and matrix (Emachine/Ematrix), and for the volume fraction of the machines. The most desirable performance of the composite was obtained when the matrix Poisson??s ratio was 0.49, and there was interaction between the Emachine/Ematrix and the volume fraction of the machines. Also the proper volume fraction range of the machine was predicted to be between 0.15 and 0.2 for the lamina shape MAC. Based upon the analysis, a sandwich structure MAC was fabricated and tested. This composite showed 11 times higher stiffness than the matrix without loosing the matrix damping property. This dissertation shows that the research met these objectives: 1) the MAC concept is effective for passive damping of vibrations, 2) that material combinations studied here had optimal combinations for best performance, and 3) that this is a promising field study for future passive and active materials development.

Kim, Jong Hyun

2005-08-01T23:59:59.000Z

420

Directing exploratory search: reinforcement learning from user interactions with keywords  

Science Conference Proceedings (OSTI)

Techniques for both exploratory and known item search tend to direct only to more specific subtopics or individual documents, as opposed to allowing directing the exploration of the information space. We present an interactive information retrieval system ... Keywords: adaptive interfaces, data mining, information filtering, machine learning, recommender systems

Dorota Glowacka; Tuukka Ruotsalo; Ksenia Konuyshkova; kumaripaba Athukorala; Samuel Kaski; Giulio Jacucci

2013-03-01T23:59:59.000Z

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


421

Argonne's GREET Model - Driving Transportation Solutions  

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

Driving Driving Transportation Solutions Model Argonne's GREET D r i v i n g Tr a n s p o r t a t i o n S o l u t i o n s ARGONNE'S GREET Argonne's GREET model is widely recognized as the "gold standard" for evaluating and comparing the energy and environmental impacts of transportation fuels and advanced vehicles. The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model is a one-of-a-kind analytical tool that simulates the energy use and emissions output of various vehicle and fuel combinations. Sponsored by the U.S. Department of Energy's (DOE) Office of Energy Efficiency and Renewable Energy, the free software program gives researchers the unique ability to analyze technologies over an entire life cycle - from well to wheels and from raw material mining to vehicle disposal.

422

Enhancing cavity cooling with cavity driving  

E-Print Network (OSTI)

Cavity-mediated cooling has the potential to become one of the most efficient techniques to cool molecular species down to very low temperatures. However, theoretical schemes with single-laser driving require relatively strong trapping potentials and relatively long cavity photon life times which are hard to realise experimentally. In this paper we therefore consider an alternative cavity cooling scenario with double-laser driving. It is shown that the second laser can enhance the phonon-photon coherence which governs the time evolution of the mean phonon number, thereby resulting in higher cooling rates and a lower final temperature, when the cavity decay rate kappa is four or more times larger than the phonon frequency nu of the trapped particle.

Blake, Tony; Beige, Almut

2010-01-01T23:59:59.000Z

423

Heating and current drive systems for TPX  

SciTech Connect

The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

Swain, D.; Goranson, P. [Oak Ridge National Lab., TN (United States); Halle, A. von; Bernabei, S.; Greenough, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

1994-05-24T23:59:59.000Z

424

NEUTRONIC REACTOR CONTROL ROD DRIVE APPARATUS  

DOE Patents (OSTI)

ABS>A suspension mechanism between a vertically movable nuclear reactor control rod and a rod extension, which also provides information for the operator or an automatic control signal, is described. A spring connects the rod extension to a drive shift. The extension of the spring indicates whether (1) the rod is at rest on the reactor, (2) the rod and extension are suspended, or (3) the extension alone is suspended, the spring controlling a 3-position electrical switch.

Oakes, L.C.; Walker, C.S.

1959-12-15T23:59:59.000Z

425

Batteries for Electric Drive Vehicles - Status 2005  

Science Conference Proceedings (OSTI)

Commercial availability of advanced battery systems that meet the cost, performance, and durability requirements of electric drive vehicles (EDVs) is a crucial challenge to the growth of markets for these vehicles. Hybrid electric vehicles (HEVs) are a subset of the family of EDVs, which include battery electric vehicles (BEVs), power assist hybrid electric vehicles, plug-in hybrid electric vehicles (PHEVs), and fuel cell vehicles. This study evaluates the state of advanced battery technology, presents u...

2005-11-29T23:59:59.000Z

426

New Accessory for Cleaning the Inside of the Machine Tool Cavity  

SciTech Connect

The best way to extend the life of a metalworking fluid (MWF) is to make sure the machine tool and MWF delivery system are properly cleaned at least once per year. The dilemma the MWF manager is faced with is: How does one clean the machine tool and the MWF system on a large machine tool with an enclosure in a timely manner without impacting production schedules? Remember the walls and roof of the machine enclosure are coated with a film of dried contaminated MWF that must also be removed. If not removed, the deposits on these surfaces can recontaminate the fresh charge of MWF. I have found a product that with this revised procedure helps to shorten the machine tool down time involved with machine cleaning. (1) Discuss with your MWF supplier if they have a machine cleaning product that can be used with your current water based MWF during normal machining operations. Most MWF manufacturers have a machine cleaner that can be used at a lower concentration (1-2% vs. 5%) and can be used while still making production parts for a short period of time (usually 24-48 hours). (2) Make sure this machine cleaner is compatible with the work-piece material you are machining into product. Most cleaners are compatible with ferrous alloys. Because of the increased alkalinity of the fluid you might experience staining if you are machining copper or aluminum alloys. (3) Remove the chips from the chips pans and fluid channels. (4) During off shift hours circulate the MWF using a new product marketed by Rego-Fix called a 'Hydroball'. This device has a 5/8 inch diameter straight shank which allows it to be installed in any collet or solid quick change tool holder. It has multiple nozzles so that the user can control the spray pattern generated when the MWF is circulated. It allows the user to utilize the high pressure, through spindle MWF delivery capability of your machine tool for cleaning purposes. The high pressure MWF system can now be effectively used for cleaning purposes. This will also work with standard pressure system but you must reduce the number of nozzles utilized. By combining the movement of the machine axis around the operating envelope and the MWF circulation you can do a reasonably effective job of washing the inside of the machine tool operating cavity. Way covers will be moved and surfaces exposed because of axis movement. Spray direction will change to better wash fixtures and machine tool components. Deposits will start to breakdown and be washed into the machine tool sump. Since the cycle will run four or more hours it can be done with a weaker cleaning solution. The distributor states that the unit can be rotated up to 50 RPM. When running it has the same effect as the washing rotor inside of your home dishwasher. Inside the cavity on a machining center there is a lot of splash. During normal operations, MWF deposits buildup on the walls and roof of the enclosures. If these deposits (containing bacteria, mold and other contaminants) are not removed they will inoculate the fresh charge of MWF when they are resaturated. When you clean the inside of machine tool cavity, time is spent removing these deposits on the walls and roof of the enclosure. Getting to these surfaces is very difficult usually requiring that a member of the cleaning crew get inside the machine tool to reach them. The Hydro ball is effective in distributing the cleaning solution on all surfaces of the enclosure under high pressure. The only negative we have found is you get to find all the gaps and leaks in your machine tool enclosure. By running the hydro ball with the machine cleaner enriched MWF during off shift (4-8 hours) you can effectively remove these deposits and buildups on the internal surfaces of the cavity of the machine tool and wash them down into the sump. You also clean the internal components of the MWF system without interrupting normal scheduled work. (5) Pump out the spent MWF. You will have found that most of the deposits have been washed from the internal surfaces of the enclosure. For extremely dirty machines you might have to

Lazarus, Lloyd

2009-04-21T23:59:59.000Z

427

GenDrive Limited | Open Energy Information  

Open Energy Info (EERE)

GenDrive Limited GenDrive Limited Jump to: navigation, search Name GenDrive Limited Place Cambridge, United Kingdom Zip CB23 3GY Sector Renewable Energy, Solar, Wind energy Product Developing a range of grid-connected inverters, 'Plug & Play', for renewable energy (mostly solar and wind) systems. These are intended to improve ease of installation. Coordinates 43.003745°, -89.017499° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.003745,"lon":-89.017499,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

428

Energetic Drives LLC | Open Energy Information  

Open Energy Info (EERE)

Energetic Drives LLC Energetic Drives LLC Jump to: navigation, search Name Energetic Drives LLC Place Gresham, Oregon Zip 97030 Sector Efficiency, Wind energy Product Oregon-based engineering firm that conducts industrial efficiency improvements, as well as repair and maintenance work for grid-tie inverters and wind turbines ranging from 10kW to 1.2MW. Coordinates 44.84866°, -88.786959° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.84866,"lon":-88.786959,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

429

Diamond Wire Saw for Precision Machining of Laser Target Components  

SciTech Connect

The fabrication of precision laser targets requires a wide variety of specialized mesoscale manufacturing techniques. The diamond wire saw developed in this study provides the capability to precisely section meso-scale workpieces mounted on the assembly stations used by the Target Fabrication Group. This new capability greatly simplifies the fabrication of many types of targets and reduces the time and cost required to build the targets. A variety of materials are used to fabricate targets, including metals, plastics with custom designed chemical formulas, and aerogels of various densities. The materials are usually provided in the form of small pieces or cast rods that must be machined to the required shape. Many of these materials, such as metals and some plastics, can be trimmed using a parting tool on a diamond turning machine. However, other materials, such as aerogels and brittle materials, cannot be adequately cut with a parting tool. In addition, the geometry of the parts often requires that the workpieces be held in a special assembly station, which excludes the use of a parting tool. In the past, these materials were sectioned using a small, handheld coping saw that used a diamond-impregnated wire as a blade. This miniature coping saw was effective, but it required several hours to cut through certain materials. Furthermore, the saw was guided by hand and often caused significant damage to fragile aerogels. To solve these problems, the diamond wire saw shown in Figure 1 was developed. The diamond wire saw is designed to machine through materials that are mounted in the Target Fabrication Group's benchtop assembly stations. These assembly stations are the primary means of aligning and assembling target components, and there is often a need to machine materials while they are mounted in the assembly stations. Unfortunately, commercially available saws are designed for very different applications and are far too large to be used with the assembly stations. Therefore, a custom diamond wire saw was designed and constructed. The diamond wire saw cuts through workpieces using a continuous loop of diamond-impregnated wire of length 840 mm. The wire loop runs around several idler pulleys and is driven by a simple geared DC motor that rotates at 17 rpm. The linear speed of the wire is 107 inches/minute. The saw is oriented at an angle of 20{sup o} from horizontal, so the operator can view the wire through the cutout at the front end of the saw. When looking through a microscope or camera with a horizontal line of sight, the operator can clearly see the wire as it cuts through the workpiece, as shown in the right side of Figure 1. The saw is mounted on a two-axis stage that allows the operator to align the wire with the workpiece. To cut through the workpiece, the operator drives the wire through the workpiece by turning the feed micrometer. An image of the interior of the diamond wire saw appears in Figure 2. This picture was taken after removing the protective cover plate from the saw.

Bono, M J; Bennett, D W

2005-08-08T23:59:59.000Z

430

CSP Theorems for Communicating B Machines  

E-Print Network (OSTI)

CSP Theorems for Communicating B Machines Steve Schneider and Helen Treharne Technical Report CSD #12;#12;Introduction 1 Abstract. Recent work on combining CSP and B has provided ways of describing sys- tems comprised of components described in both B (to express requirements on state) and CSP (to

Doran, Simon J.

431

MACHINE SHOP SAFETY POLICY THE WYSS INSTITUTE  

E-Print Network (OSTI)

Health 210 Lincoln Street 617-432-1370 617-355-7580 617-632-0710 617-632-3016 617-353-6630 617 Research Building (NRB) Security: For lockouts and escorts 617-432-6119 Harvard Custodial Services 617 in the Wyss Institute for Biologically Inspired Engineering (Wyss Institute) light machine shops in the Center

Church, George M.

432

Rankine cycle machines for solar cooling  

DOE Green Energy (OSTI)

A vigorous effort to develop and demonstrate practical uses of solar energy to heat and cool buildings, to process agricultural products, and to provide thermal and electrical energy for industry has been initiated. One significant part of this effort is the research, development, and demonstration of Rankine cycle machines using fluids heated by solar energy. Recent developments in three such devices are discussed briefly.

Weathers, H.M.

1978-08-01T23:59:59.000Z

433

Data management for the world's largest machine  

Science Conference Proceedings (OSTI)

The world's largest machine, the Large Hadron Collider, will have four detectors whose output is expected to answer fundamental questions about the universe. The ATLAS detector is expected to produce 3.2 PB of data per year which will be distributed ...

Sigve Haug; Farid Ould-Saada; Katarina Pajchel; Alexander L. Read

2006-06-01T23:59:59.000Z

434

Gas quantitative analysis with support vector machine  

Science Conference Proceedings (OSTI)

Gas sensor array is an important part of electronic nose. The gas analysis performance of electronic nose is affected badly by the cross sensitivity of gas sensor array. In order to solve the problem of the cross sensitivity, in this work a new method ... Keywords: electronic nose, gas mixture, quantitative analysis, support vector machine

Liang Xie; Xiaodong Wang

2009-06-01T23:59:59.000Z

435

Performance implications of virtualizing multicore cluster machines  

Science Conference Proceedings (OSTI)

High performance computers are typified by cluster machines constructed from multicore nodes and using high performance interconnects like Infiniband. Virtualizing such 'capacity computing' platforms implies the shared use of not only the nodes and node ... Keywords: Infiniband, high-performance computing, virtualization

Adit Ranadive; Mukil Kesavan; Ada Gavrilovska; Karsten Schwan

2008-03-01T23:59:59.000Z

436

HEART SMART NUTRITION Be a Lean Machine  

E-Print Network (OSTI)

Lesson 6 HEART SMART NUTRITION Be a Lean Machine This Heart Smart Nutrition series can help you Heart, Lung and Blood Institute). Physical activity increases your metabolic rate, which helps to burn more calories. Plus it helps the heart and lungs function to full capacity. Exercise also helps raise

437

Preprocessing unbalanced data using support vector machine  

Science Conference Proceedings (OSTI)

This paper deals with the application of support vector machine (SVM) to deal with the class imbalance problem. The objective of this paper is to examine the feasibility and efficiency of SVM as a preprocessor. Our study analyzes different classification ... Keywords: COIL data, Hybrid method, Preprocessor, SVM, Unbalanced data

M. A. H. Farquad; Indranil Bose

2012-04-01T23:59:59.000Z

438

Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Mississippi Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

439

Secrets of the Motor That Drives Archaea Revealed  

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

Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer...

440

Alternative Fuels Data Center: California Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: California Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

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


441

Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Pennsylvania Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

442

Vehicle Technologies Office: Fact #420: April 17, 2006 Driving...  

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

0: April 17, 2006 Driving Less Due to Gasoline Prices to someone by E-mail Share Vehicle Technologies Office: Fact 420: April 17, 2006 Driving Less Due to Gasoline Prices on...

443

Driving Battery Production in Ohio | Department of Energy  

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

Driving Battery Production in Ohio Driving Battery Production in Ohio November 1, 2010 - 6:19pm Addthis Randy Turk, Elyria Site Manager; Rep. Betty Sutton (OH); Frank Bozich,...

444

Driving Home to a Clean Energy Future | Department of Energy  

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

Driving Home to a Clean Energy Future Driving Home to a Clean Energy Future June 7, 2011 - 10:57am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy...

445

Do You Drive a Hybrid Electric Vehicle? | Department of Energy  

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

Drive a Hybrid Electric Vehicle? Do You Drive a Hybrid Electric Vehicle? July 9, 2009 - 1:34am Addthis In Tuesday's entry, Francis X. Vogel from the Wisconsin Clean Cities...

446

NREL: News Feature - NREL Drives Toward the Future with Fuel...  

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

Drives Toward the Future with Fuel Cell EVs June 21, 2013 A hydrogen fuel cell powered Toyota sport utility vehicle emblazoned with an NREL logo drives past a building on the NREL...

447

Personalized driving behavior monitoring and analysis for emerging hybrid vehicles  

Science Conference Proceedings (OSTI)

Emerging electric-drive vehicles, such as hybrid electric vehicles (HEVs) and plug-in HEVs (PHEVs), hold the potential for substantial reduction of fuel consumption and greenhouse gas emissions. User driving behavior, which varies from person ...

Kun Li; Man Lu; Fenglong Lu; Qin Lv; Li Shang; Dragan Maksimovic

2012-06-01T23:59:59.000Z

448

Optimization of Driving Styles for Fuel Economy Improvement  

SciTech Connect

Modern vehicles have sophisticated electronic control units, particularly to control engine operation with respect to a balance between fuel economy, emissions, and power. These control units are designed for specific driving conditions and testing. However, each individual driving style is different and rarely meets those driving conditions. In the research reported here we investigate those driving style factors that have a major impact on fuel economy. An optimization framework is proposed with the aim of optimizing driving styles with respect to these driving factors. A set of polynomial metamodels are constructed to reflect the responses produced by changes of the driving factors. Then we compare the optimized driving styles to the original ones and evaluate the efficiency and effectiveness of the optimization formulation.

Malikopoulos, Andreas [ORNL; Aguilar, Juan P. [Georgia Institute of Technology

2012-01-01T23:59:59.000Z

449

Alternative Fuels Data Center: Fuel-Efficient Driving Training  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Fuel-Efficient Driving Training to someone by E-mail Share Alternative Fuels Data Center: Fuel-Efficient Driving Training on Facebook Tweet about Alternative Fuels Data Center:...

450

Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Connecticut Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

451

Alternative Fuels Data Center: Washington Laws and Incentives for Driving /  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Driving / Idling to someone by E-mail Driving / Idling to someone by E-mail Share Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Facebook Tweet about Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Twitter Bookmark Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Google Bookmark Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Delicious Rank Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on Digg Find More places to share Alternative Fuels Data Center: Washington Laws and Incentives for Driving / Idling on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

452

Advanced battery thermal management for electrical-drive vehicles using reciprocating cooling flow and spatial-resolution, lumped-capacitance thermal model.  

E-Print Network (OSTI)

?? The thermal management of traction battery systems for electrical-drive vehicles directly affects vehicle dynamic performance, long-term durability and cost of the battery systems. The (more)

Mahamud, Rajib

2011-01-01T23:59:59.000Z

453

Clean Cities 2011 Stakeholders Summit - Electric Drive Vehicles...  

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

Department of Energy's Vehicle Technologies Program Vehicle Technologies Program - Clean Cities 2011 Stakeholders Summit - Electric Drive Vehicles and Charging Infrastructure...

454

DC Drive Ride-Through Technology Alternatives and Development  

Science Conference Proceedings (OSTI)

Adjustable speed drive (ASD) ride-through issues have caused increased concerns due to drive susceptibility to power disturbances and the costly results of process disruptions. Losses incurred due to DC drive trips can be avoided for critical production processes by employing ride-through alternatives. The purpose of this study is to determine the DC drive ride-through requirements of industrial customers and match those ride-through needs with possible solutions.

1998-12-19T23:59:59.000Z

455

Electrical Motor Drive Apparatus and Method - Energy Innovation Portal  

Vehicles and Fuels Industrial Technologies Electrical ... Auto manufacturers ; Industrial motor drive manufacturers; Patents and Patent Applications. ID Number.

456

PHEV Energy Storage and Drive Cycle Impacts (Presentation)  

DOE Green Energy (OSTI)

Plug-in Hybrid vehicles energy storage and drive cycle impacts, presented at the 7th Advanced Automotive Battery Conference.

Markel, T.; Pesaran, A.

2007-05-17T23:59:59.000Z

457

Design of a desktop milling machine for fabrication in an introductory machine shop class  

E-Print Network (OSTI)

The purpose of this research is to design, fabricate and test the electromechanical subsystem of a CNC milling machine kit. Unlike all other CNC kits on the market, the purpose of this kit is to teach students the principles ...

Lorenc, Dan (Daniel P.)

2010-01-01T23:59:59.000Z

458

CONTROL ROD DRIVE MECHANISM FOR A NUCLEAR REACTOR  

DOE Patents (OSTI)

A lead-screw-type control rod drive featuring an electric motor and a fluid motor arranged to provide a selectably alternative driving means is described. The electric motor serves to drive the control rod slowly during normal operation, while the fluid motor, assisted by an automatic declutching of the electric motor, affords high-speed rod insertion during a scram. (AEC)

Hawke, B.C.; Liederbach, F.J.; Lones, W.

1963-05-14T23:59:59.000Z

459

Tolerating latency in replicated state machines through client speculation  

Science Conference Proceedings (OSTI)

Replicated state machines are an important and widely-studied methodology for tolerating a wide range of faults. Unfortunately, while replicas should be distributed geographically for maximum fault tolerance, current replicated state machine protocols ...

Benjamin Wester; James Cowling; Edmund B. Nightingale; Peter M. Chen; Jason Flinn; Barbara Liskov

2009-04-01T23:59:59.000Z

460

Proceedings of the 25th international conference on Machine learning  

Science Conference Proceedings (OSTI)

This volume contains the papers accepted to the 25th International Conference on Machine Learning (ICML 2008). ICML is the annual conference of the International Machine Learning Society (IMLS), and provides a venue for the presentation and discussion ...

William Cohen; Andrew McCallum; Sam Roweis

2008-07-01T23:59:59.000Z

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


461

Forecasting electricity demand by hybrid machine learning model  

Science Conference Proceedings (OSTI)

This paper proposes a hybrid machine learning model for electricity demand forecasting, based on Bayesian Clustering by Dynamics (BCD) and Support Vector Machine (SVM). In the proposed model, a BCD classifier is firstly applied to cluster the input data ...

Shu Fan; Chengxiong Mao; Jiadong Zhang; Luonan Chen

2006-10-01T23:59:59.000Z

462

The RWTH Aachen machine translation system for WMT 2012  

Science Conference Proceedings (OSTI)

This paper describes the statistical machine translation (SMT) systems developed at RWTH Aachen University for the translation task of the NAACL 2012 Seventh Workshop on Statistical Machine Translation (WMT 2012). We participated in the evaluation ...

Matthias Huck; Stephan Peitz; Markus Freitag; Malte Nuhn; Hermann Ney

2012-06-01T23:59:59.000Z

463

Virtual cutter path display for dental milling machine  

E-Print Network (OSTI)

This paper presents the prototype of a mixed reality system using the computer controlled dental milling machine, which is called MRD Mill. First, overview of the core dental milling machine developed in this study is ...

Ito, Teruaki

464

Machine Learning Forensics for Law Enforcement, Security, and Intelligence  

Science Conference Proceedings (OSTI)

Increasingly, crimes and fraud are digital in nature, occurring at breakneck speed and encompassing large volumes of data. To combat this unlawful activity, knowledge about the use of machine learning technology and software is critical. Machine Learning ...

Jesus Mena

2011-06-01T23:59:59.000Z

465

Seattle City Light - Vending Machine Rebate Program | Department...  

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

of VendingMiser Energy Efficient Vending Machines. VendingMiser reduces the energy consumption of cold drink vending machines by using an occupancy sensor to power down the...

466

A Bahadur Representation of the Linear Support Vector Machine  

Science Conference Proceedings (OSTI)

The support vector machine has been successful in a variety of applications. Also on the theoretical front, statistical properties of the support vector machine have been studied quite extensively with a particular attention to its Bayes risk consistency ...

Ja-Yong Koo; Yoonkyung Lee; Yuwon Kim; Changyi Park

2008-06-01T23:59:59.000Z

467

Combination, a model vehicle engine and a direct-current generator  

SciTech Connect

This patent describes an engine for a model vehicle and a direct-current generator, comprising: an internal-combustion engine; and a direct-current generator operatively coupled to the engine; wherein the generator comprises an armature, and a drive coupling member drivingly engaged with the armature; the armature has three poles; each of the poles has not less than six hundred turns of magnetic wire; the engine having first means comprising a crankshaft, and second means comprising a connecting rod; and one of the first a second means has means for drivingly engaging the drive coupling for imparting rotation to the generator from the engine.

Williams, G.A.

1987-01-20T23:59:59.000Z

468

LTC American`s, Inc. vacuum blasting machine: Baseline report  

Science Conference Proceedings (OSTI)

The LTC shot blast technology was tested and is being evaluated at Florida International University (FIU) as a baseline technology. In conjunction with FIU`s evaluation of efficiency and cost, this report covers the evaluation conducted for safety and health issues. It is a commercially available technology and has been used for various projects at locations throughout the country. The LTC 1073 Vacuum Blasting Machine uses a high-capacity, direct-pressure blasting system which incorporates a continuous feed for the blast media. The blast media cleans the surface within the contained brush area of the blast. It incorporates a vacuum system which removes dust and debris from the surface as it is blasted. The safety and health evaluation during the testing focused on two main areas of exposure: dust and noise.

NONE

1997-07-31T23:59:59.000Z

469

Definition: Direct current | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Direct current Jump to: navigation, search Dictionary.png Direct current A type of electricity transmission and distribution by which electricity flows in one direction through the conductor, usually relatively low voltage and high current (such as from a battery). To be used for typical 120 volt or 220 volt household appliances, DC must be converted to alternating current (AC).[1][2] View on Wikipedia Wikipedia Definition Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow

470

Magnesium: Digital Resource Center - ARTICLE: Safe Machining of ...  

Science Conference Proceedings (OSTI)

Sep 7, 2007... Other ==== Miscellaneous Digital Resources in Magnesium. Spacer ... Topic Title: ARTICLE: Safe Machining of Magnesium Parts by Cutting...

471

NIST Open Machine Translation (OpenMT) Evaluation  

Science Conference Proceedings (OSTI)

DARPA TIDES Machine Translation 2004 Evaluation (MT04). Current and Recent DARPA TIDES MT Activities. MT04 takes ...

472

Voltage protection scheme for MG sets used to drive inductive energy storage systems  

DOE Green Energy (OSTI)

A recent tokamak proposal at ORNL called for MG (motor-generator) sets to drive the ohmic heating (OH) coil, which was to be subjected to 20 kV immediately after coil charge-up to initiate the experiment. Since most rotating machinery is inherently low voltage, including the machines available at ORNL, a mechanism was necessary to isolate the generators from the high voltage portions of the circuit before the appearance of this voltage. It is not the expected 20 kV at the coil that causes difficulty, because the main interrupting switch handles this. The voltage induced in the armature due to di/dt and the possibility of faults are the greatest causes for concern and are responsible for the complexity of the voltage protection scheme, which must accommodate any possible combination of fault time and location. Such a protection scheme is presented in this paper.

Campen, G.L.; Easter, R.B.

1977-01-01T23:59:59.000Z

473

A Reordering Model for Phrase-Based Machine Translation  

Science Conference Proceedings (OSTI)

This paper presents a new method for reordering in phrase based statistical machine translation (PBSMT). Our method is based on previous chunk-level reordering methods for PBSMT. Our method is a global reordering. First, we parse the source language ... Keywords: Machine Translation, Natural Language Processing, Phrase-based Statistical Machine Translation

Vinh Nguyen; Thai Phuong Nguyen; Akira Shimazu; Minh Nguyen

2008-08-01T23:59:59.000Z

474

Argument based machine learning in a medical domain  

Science Conference Proceedings (OSTI)

Argument Based Machine Learning (ABML) is a new approach to machine learning in which the learning examples can be accompanied by arguments. The arguments for specific examples are a special form of expert's knowledge which the expert uses to substantiate ... Keywords: Argument Based Machine Learning, Bacterial Infections, Geriatric Population, Rule Learning

Jure abkar; Martin Moina; Jerneja Vide?nik; Ivan Bratko

2006-05-01T23:59:59.000Z

475

Interacting meaningfully with machine learning systems: Three experiments  

Science Conference Proceedings (OSTI)

Although machine learning is becoming commonly used in today's software, there has been little research into how end users might interact with machine learning systems, beyond communicating simple ''right/wrong'' judgments. If the users themselves could ... Keywords: Explanations, Intelligent user interfaces, Machine learning, Rich feedback

Simone Stumpf; Vidya Rajaram; Lida Li; Weng-Keen Wong; Margaret Burnett; Thomas Dietterich; Erin Sullivan; Jonathan Herlocker

2009-08-01T23:59:59.000Z

476

Improving energy efficiency of buffer cache in virtual machines  

Science Conference Proceedings (OSTI)

Main memory contributes a large fraction of energy consumption in powerful servers running virtualization software to support concurrent virtual machines (VMs). Furthermore, data-intensive applications executing inside virtual machines increase the demand ... Keywords: Buffer Cache,Virtual Machine,Energy Management

Lei Ye; Chris Gniady

2012-06-01T23:59:59.000Z

477

Long Term Climate Simulations Using an Adaptable Virtual Machine.  

E-Print Network (OSTI)

the DOE NERSC, a re­ mote machine could be added to the virtual machine until the NERSC account test bed. Another is to include the NERSC machines at LBL, the Cray C90 and the Cray T3E connections, particularly into NERSC, would be important for the success of this project. The latency

478

Constructive hidden nodes selection of extreme learning machine for regression  

Science Conference Proceedings (OSTI)

In this paper, we attempt to address the architectural design of ELM regressor by applying a constructive method on the basis of ELM algorithm. After the nonlinearities of ELM network are fixed by randomly generating the parameters, the network will ... Keywords: Constructive method, Error-minimized extreme learning machine, Extreme learning machine, Incremental extreme learning machine

Yuan Lan; Yeng Chai Soh; Guang-Bin Huang

2010-10-01T23:59:59.000Z

479

A real-time virtual machine implementation for small microcontrollers  

Science Conference Proceedings (OSTI)

A way to host a full general purpose virtual machine (VM) interpreter on a very small microcontroller platform is described. This machine provides a comprehensive set of general and enhanced functionality efficiently by abstracting the VM instruction ... Keywords: Microcontrollers, Real-time systems, Virtual machine

W. Roger Davis; Phillip A. Laplante; Bo I. Sandn

2012-09-01T23:59:59.000Z

480

Scheduling a capacitated batch-processing machine to minimize makespan  

Science Conference Proceedings (OSTI)

This paper aims at improving the utilization of a single batch-processing machine. The batch-processing machine can process a batch of jobs, as long as the number of jobs and the total size of all the jobs in a batch do not violate the machine's capacity. ... Keywords: Batch processing, Mathematical modeling, Scheduling, Simulated annealing

Purushothaman Damodaran; Krishnaswami Srihari; Sarah S. Lam

2007-04-01T23:59:59.000Z

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


481

Virtual Data System on distributed virtual machines in computational grids  

Science Conference Proceedings (OSTI)

This paper presents the work of building a Grid workflow system on distributed virtual machines. A Grid Virtualisation Engine (GVE) is implemented to manage virtual machines as computing resources for Grid applications. The Virtual Data System ... Keywords: compact muon solenoid, distributed virtual machines, grid computing, grid workflow, high energy physics applications, virtual data systems

Lizhe Wang; Gregor Von Laszewski; Jie Tao; Marcel Kunze

2010-09-01T23:59:59.000Z

482

Super-tasks, accelerating Turing machines and uncomputability  

Science Conference Proceedings (OSTI)

Accelerating Turing machines are devices with the same computational structure as Turing machines (TM), but able to perform super-tasks. We ask whether performing super-tasks alone produces more computational power; for example, whether accelerating ... Keywords: Thomson's paradox, accelerating Turing machines, halting problem, super-task

Oron Shagrir

2004-06-01T23:59:59.000Z

483

Estimation of synchronous machine parameters by standstill tests  

Science Conference Proceedings (OSTI)

In this paper we present the results of a time-domain identification procedure to estimate the linear parameters of a salient-pole synchronous machine at standstill. A new approach is proposed for the estimation of synchronous machine coupled to DC-chopper ... Keywords: Parameter estimation, Standstill tests, Synchronous machine

M. Hasni; O. Touhami; R. Ibtiouen; M. Fadel; S. Caux

2010-10-01T23:59:59.000Z

484

Oscillatory nonhmic current drive for maintaining a plasma current  

DOE Patents (OSTI)

Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, Nathaniel J. (Princeton, NJ)

1986-01-01T23:59:59.000Z

485

Oscillatory nonohomic current drive for maintaining a plasma current  

DOE Patents (OSTI)

Apparatus and methods are described for maintaining a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

Fisch, N.J.

1984-01-01T23:59:59.000Z

486

Mechanical design of a desktop milling machine for fabrication in an introductory machining class by Johannes Schneider.  

E-Print Network (OSTI)

The purpose of this research is the mechanical design of a miniature desktop milling machine for use as an alternative class project in MIT's introductory machining course 2.670. This research is important, because a ...

Schneider, Johannes (Johannes A.)

2010-01-01T23:59:59.000Z

487

NREL: Fleet Test and Evaluation - Hybrid Electric Drive Systems  

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

Hybrid Electric Drive Systems Hybrid Electric Drive Systems The Fleet Test and Evaluation Team conducts performance evaluations of hybrid electric drive systems in fleets of delivery vehicles and transit buses. Hybrid electric drive systems combine a primary power source, an energy storage system, and an electric motor to achieve a combination of emissions, fuel economy, and range benefits unattainable with any of these technologies alone. Hybrid electric drive systems use less petroleum-based fuel and capture energy created during breaking and idling. This collected energy is used to propel the vehicle during normal drive cycles. The batteries supply additional power for acceleration and hill climbing. Learn more about the team's hybrid electric drive system evaluations: Delivery Vehicles

488

Better Buildings Neighborhood Program: Energy Upgrade California Drives  

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

Energy Upgrade Energy Upgrade California Drives Demand From Behind the Wheel to someone by E-mail Share Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Facebook Tweet about Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Twitter Bookmark Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Google Bookmark Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Delicious Rank Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on Digg Find More places to share Better Buildings Neighborhood Program: Energy Upgrade California Drives Demand From Behind the Wheel on

489

Hybrid-secondary uncluttered induction machine  

DOE Patents (OSTI)

An uncluttered secondary induction machine (100) includes an uncluttered rotating transformer (66) which is mounted on the same shaft as the rotor (73) of the induction machine. Current in the rotor (73) is electrically connected to current in the rotor winding (67) of the transformer, which is not electrically connected to, but is magnetically coupled to, a stator secondary winding (40). The stator secondary winding (40) is alternately connected to an effective resistance (41), an AC source inverter (42) or a magnetic switch (43) to provide a cost effective slip-energy-controlled, adjustable speed, induction motor that operates over a wide speed range from below synchronous speed to above synchronous speed based on the AC line frequency fed to the stator.

Hsu, John S. (Oak Ridge, TN)

2001-01-01T23:59:59.000Z

490

R&D ERL: Machine Protection System  

SciTech Connect

The Machine Protection System (MPS) is a device-safety system that is designed to prevent damage to hardware by generating interlocks, based upon the state of input signals generated by selected sub-system. It exists to protect key machinery such as the 50 kW and 1 MW RF Systems. When a fault state occurs, the MPS is capable of responding with an interlock signal within several microseconds. The Machine Protection System inputs are designed to be fail-safe. In addition, all fault conditions are latched and time-stamped. The ERL MPS is based on a National Instruments hardware platform, and is programmed by utilizing National Instruments development environment for a visual programming language.

Altinbas, Z.

2010-01-01T23:59:59.000Z

491

OMEGA polar-drive target designs  

SciTech Connect

Low-adiabat polar-drive (PD) [Skupsky et al., Phys. Plasmas 11, 2763 (2004)] implosion designs for the OMEGA [Boehly et al., Opt. Commun. 133, 495 (1997)] laser are described. These designs for cryogenic deuterium-tritium and warm plastic shells use a temporal laser pulse shape with three pickets followed by a main pulse [Goncharov et al., Phys. Rev. Lett. 104, 165001 (2010)]. The designs are at two different on-target laser intensities, with different in-flight aspect ratios (IFARs). These designs permit studies of implosion energetics and target performance closer to ignition-relevant intensities ({approx}7 Multiplication-Sign 10{sup 14} W/cm{sup 2} at the quarter-critical surface, where nonlocal heat conduction and laser-plasma interactions can play an important role) but at lower values of IFAR {approx} 22 or at lower intensity ({approx}3 Multiplication-Sign 10{sup 14} W/cm{sup 2}) but at a higher IFAR (IFAR {approx} 32, where shell instability can play an important role). PD geometry requires repointing of laser beams to improve shell symmetry. The higher-intensity designs optimize target performance by repointing beams to a lesser extent, compensating for the reduced equatorial drive by increasing the energies of the repointed beams. They also use custom beam profiles that improve equatorial illumination at the expense of irradiation at higher latitudes. These latter designs will be studied when new phase plates for the OMEGA Laser System, corresponding to the custom beam profiles, are obtained.

Radha, P. B.; Marozas, J. A.; Marshall, F. J.; Shvydky, A.; Collins, T. J. B.; Goncharov, V. N.; McKenty, P. W.; Sangster, T. C.; Skupsky, S. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); McCrory, R. L.; Meyerhofer, D. D. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); Department of Mechanical Engineering and Department of Physics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States)

2012-08-15T23:59:59.000Z

492

Walcot Electric Machines | Open Energy Information  

Open Energy Info (EERE)

Walcot Electric Machines Walcot Electric Machines Jump to: navigation, search Name Walcot Electric Machines Place Bath, United Kingdom Zip BA2 7AY Sector Efficiency Product A spin-out from Bath University which that will develop and licence process relating to high efficiency electric motors for fixed speed applications, and will offer endusers substantial reductions in the cost of operation Coordinates 45.467055°, -98.329279° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.467055,"lon":-98.329279,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

493

Dovetail spoke internal permanent magnet machine  

Science Conference Proceedings (OSTI)

An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple pair of permanent magnets for generating a magnetic field, which magnetic field interacts with the stator magnetic field to produce a torque. The multiple pair of permanent magnets are disposed between the stacks. The rotor assembly also includes multiple middle wedges mounted between each pair of the multiple permanent magnets.

Alexander, James Pellegrino (Ballston Lake, NY); EL-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Lokhandwalla, Murtuza (Clifton Park, NY); Shah, Manoj Ramprasad (Latham, NY); VanDam, Jeremy Daniel (West Coxsackie, NY)

2011-08-23T23:59:59.000Z

494

Positional reference system for ultraprecision machining  

DOE Patents (OSTI)

A stable positional reference system for use in improving the cutting tool-to-part contour position in numerical controlled-multiaxis metal turning machines is provided. The reference system employs a plurality of interferometers referenced to orthogonally disposed metering bars which are substantially isolated from machine strain induced position errors for monitoring the part and tool positions relative to the metering bars. A microprocessor-based control system is employed in conjunction with the plurality of positions interferometers and part contour description data input to calculate error components for each axis of movement and output them to corresponding axis driven with appropriate scaling and error compensation. Real-time position control, operating in combination with the reference system, makes possible the positioning of the cutting points of a tool along a part locus with a substantially greater degree of accuracy than has been attained previously in the art by referencing and then monitoring only the tool motion relative to a reference position located on the machine base.

Arnold, J.B.; Burleson, R.R.; Pardue, R.M.

1980-09-12T23:59:59.000Z

495

El Ma Electronic Machining srl | Open Energy Information  

Open Energy Info (EERE)

Ma Electronic Machining srl Ma Electronic Machining srl Jump to: navigation, search Name El.Ma. Electronic Machining srl Place Riva del Garda (TN), Italy Zip 38066 Sector Hydro, Hydrogen, Solar, Wind energy Product String representation "Italy-based, in ... solar sectors." is too long. References El.Ma. Electronic Machining srl[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. El.Ma. Electronic Machining srl is a company located in Riva del Garda (TN), Italy . References ↑ "El.Ma. Electronic Machining srl" Retrieved from "http://en.openei.org/w/index.php?title=El_Ma_Electronic_Machining_srl&oldid=344591" Categories: Clean Energy Organizations Companies Organizations

496