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Audible noise in speed‐controlled inverter‐fed medium‐sized induction motors

European Transactions on Electrical Power 1995年第1期5卷 5-13页

作者： Muster, J. Budig, P.K. Belmans, R. Geysen, W. Sattler, Ph.K. Jorg Muster (1955) studied Electrical Engineering at the Technische Hochschule Karl-Mm-StadtlGerrnany from 1974 to 1978. Till 1985 he was Assistant at the chair of Electrical Machines and Drives absolved with promotion about losses and torques of inverter supplied AC machines. From 1985 until 1988 he worked for a tool-machine factory developing high-speed AC drives. Since 1988 he is Scientific Assistant at the chair of Electrical Machines and Drives at the Technische Universität ChemnitdGermany. (TU ChemniWZwickau Dezernat 5.0 Technologietransfer Carolastr. 8 D-09 I l l Chemnitd Germany T +*** Fax +49371/686240) PeW-KlaUs Budig (1928) studied Electrical Engineering at the Technische Hochschule Dresden/Germany from 1948 till 1952. For two years he was Assistant at the chair of Electrical Machines and Drives. From 1954 he was with Sachsenwerk Dresden. He was involved in research and development of amplidyne three-phase commutator-machines DC and AC traction motors thyristor-supplied traction motors. For some years he was Chief Technologist and finally Chief Engineer. At this time he is planning the production of new types of electrical machines like hermetic-motors rolling-mill motors. hydrogenerators and fractional horsepower induction motors. 1966 he got a call as a Professor to theTechnical University at Chemnitz/Germany. His research activities are three-phase linear motors thyristor-supplied DC motors. electric cars. computation of magnetic fields multi-motor AC drives high precision drives for the submicrorneter-range. magnetic bearing and high speed AC drives. (TU ChemnitdZwickau Fachbereich Elektrotechnik Carolastr.8 D-0911 l ChemnitdGermany T+49371/5613323 Fax +49371/5613361) Ronnie J. M. Belmans (1956) received the M.Sc. degree in Electrical Engineering from the Katholieke Universiteit LeuvenBelgium in 1979 the Ph.D. degree from the same university in 1984 and the Special Doctorate in 1989. From 1979 to 1985 he was a member of the staff of the Katholieke Universiteit Leuven. Currently

The audible noise produced by three‐phase, squirrel‐cage induction motors, is caused by the space harmonics of the flux‐density distribution in the air gap of the machine. When the motor is supplied by a frequency inverter in order to control the speed, time harmonics in both current and voltage are present, yielding new components in the audible noise spectrum. In the paper, a number of motor‐inverter combinations are compared for medium‐sized induction motors (90 kW). As a reference case, the motors are supplied with a generator, delivering a variable frequency without harmonics. Theoretical explanations for the increase of the audible noise level and the additional frequency components are given. Copyright © 1995 John Wiley & Sons, Ltd.

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ANALYTICAL TRANSIENT-RESPONSE OF CMOS INVERTERS

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS 1992年第1期39卷 42-44页

作者： KAYSSI, AI SAKALLAH, KA BURKS, TM Advanced Computer Architecture Lab Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA

A general formula relating the waveform at the output of a CMOS inverter to the waveform at its input is derived. The formula is applied to three cases: a step input, a ramp input, and an exponential input. A one-dimensional functional dependence of the inverter propagation delay and output slew rate on circuit parameters is derived and an inverter macromodel for timing analysis is suggested and experimentally verified.

关键词： Transient analysis Transient response Inverters Semiconductor device modeling Circuits Capacitance Timing Space exploration Signal design MOS devices

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Experiences in high performance computing with Pleiades and ESP 1

Experiences in high performance computing with Pleiades and ...

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1st International Symposium on High-Performance Distributed Computing, HPDC 1992

作者： Wilson, Linda F. Gonzalez, Mario J. Cruess, Michael W. Computer Engineering Research Center University of Texas at Austin AustinTX78712 United States Advanced Computer Architecture Lab Motorola Inc. AustinTX78759 United States

This paper describes experiences gained during the process of implementing a standard serial benchmark (SLALOM) on a distributed computing system (Pleiades running ESP). The purpose of our experiments has been to maximize the speedup of a distributed implementation of SLALOM when compared to its serial implementation. © 1992 IEEE.

关键词： Distributed computer systems

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A neural network approach to evaluate distribution system reliability

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1992 IEEE International Conference on Systems engineering

作者： Chen, Jiann-Liang Chang, Shao-Hung Advanced Technology Center Computer and Communication Research Lab Industrial Technology and Research Lnstitute Taiwan Depart. of Electrical Engineering Feng-Chia University Taichung Taiwan

ISBN: (纸本)0780307348

An effective method for evaluating the distribution system reliability using an artificial neural network (ANN) is proposed in the present paper. The ANN is constructed according to the back-propagation learning rule which is an iterative gradient algorithm designed to adjust the interconnection weights among processing elements. Therefore, the developed ANN is used to predict the distribution system reliability by the historic data. At the same time, the system average interruption frequency index (SAIFI and the system average interruption duration index (SAIDI) of a real distribution system are computed and compared with results generated by the network method. It was found that the deviation of the results computed by the proposed approach is below 1- and the required running time on a SUN network environment is less than 2 seconds. In addition, handling the distribution system configuration changes induced by overloading or faults, the ANN approach demonstrates an advantage over the network method. © 1992 IEEE.

关键词： Neural networks

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The decision-maker: An intelligent platform for military applications

The decision-maker: An intelligent platform for military app...

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1992 Singapore International Conference on Intelligent Control and Instrumentation

作者： Chung, Jain-Shone Chen, Jiann-Liang Dept. of System Engineering Chung Cheng Institute of Technology Tao-Yuan Taiwan Advanced Technology Center Computer and Communication Research Lab. Industrial Technology Research Institute Taiwan

ISBN: (纸本)0780306325

A distributed problem-solving platform(DPSP) is proposed to handle the Anti-Air Warfare(AAW) problem in this paper. And the DPSP is utilized to assist a commander for making decisions. This can be expressed as follows: (1)disposition of air defense ships (2)air defense performance evaluation (3)threat evaluation (4)effective weapons allocation against threat. The developed DPSP is based on blackboard systems which provide a more open problem-solving approach than expert systems. And the system is a group of knowledge modules collaborating with each other by way of a shared database to reach a solution of the field management in AAW. In addition, a two-level control mechanism composed of meta-control and local-control is also designed to achieve the high degree of goodness in AAW problems. Results from the implementation of DPSP in AAW indicate that the platform assists a commander to make appropriate decisions such that the fleet air defense can be strengthened. © 1992 by IEEE Singapore Section.

关键词： Decision making

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Optimal clocking of circular pipelines

Optimal clocking of circular pipelines

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IEEE International Conference on computer Design: VLSI in computers and Processors, (ICCD)

作者： K.A. Sakallah T.N. Mudge T.M. Burks E.S. Davidson Advanced Computer Architecture Lab Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA

A timing model for circular pipelines is presented and used to obtain the minimum cycle time in terms of circuit delays and clock skews. The model accounts for short- and long-path delays, the effects of clock skew, and the use of both latches and flip-flops as synchronizing elements. The formulation and implementation of algorithms to find the minimum cycle time for both single-phase and a restricted class of multi-phase clocks are described.< >

关键词： Clocks Synchronization Pipeline processing Delay effects Timing Latches Flip-flops computer architecture Circuit simulation Circuit synthesis

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Induction of Decision Trees from Inconclusive Data 6

Induction of Decision Trees from Inconclusive Data

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6th International Workshop on Machine Learning, ICML 1989

作者： Spangler, Scott Fayyad, Usama M. Uthurusamy, Ramasamy Knowledge Engineering Group Advanced Engineering Staff GM Technical Center WarrenMI48090 United States Artificial Intelligence Lab EECS Department The University of Michigan Ann ArborMI48109 United States Computer Science Department GM Research Laboratories GM Technical Center WarrenMI48090 United States

ISBN: (纸本)1558600361

Learning from inconclusive data is an important problem that has not been addressed in the concept learning literature. In this paper, we define inconclusiveness and illustrate why ID3-like algorithms are bound to result in overspecialized classifications when trained on inconclusive data. We address the difficult problem of deciding when to stop specialization during top-down decision tree generation, and describe a modified version of Quinlan's ID3 algorithm, called INFERULE, which addresses some of the problems involved in learning from inconclusive data. Results show that INFERULE outperformed ID3 (with and without pruning) in tests on a real-world diagnostic database containing automobile repair cases. © Proceedings of the 6th International Workshop on Machine Learning, ICML 1989.

关键词： Decision trees

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Robot navigation research at CESAR

Robot navigation research at CESAR

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IEEE Conference on Decision and Control

作者： D.L. Barnett G. de Saussure F.G. Pin A. Sabharwal S.S. Iyengar Center of Engineering Systems Advanced Research Oak Ridge National Laboratory Oak Ridge TN USA Oak Ridge Nat. Lab. TN USA Department of Computer Science Louisiana State University Baton Rouge LA USA

The core of the navigation program for the Oak Ridge CESAR (Center for engineering Systems advanced Research) robots is a production system developed on the expert system shell CLIPS, which runs on an NCUBE hypercube aboard the robot. The production system can call on C-compiled navigation procedures. The production rules can read the sensor data and address the robot's effectors. This architecture was found to be efficient and flexible when used for the development and testing of the navigation algorithms. However, to process unexpected emergencies intelligently, it was necessary to control the production system through externally generated asynchronous data. This led to the design of an asynchronous production system, APS, which is being developed on the robot. Some of the navigation algorithms developed and tested at CESAR are reviewed, and the need for APS, and how it is being integrated into the robot architecture, are discussed.< >

关键词： Navigation Production systems Robot sensing systems Intelligent sensors Testing Systems engineering and theory Expert systems Hypercubes Intelligent robots Control systems

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FERMENTATION AND GENETIC-engineering - PROBLEMS AND PROSPECTS

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BIO-TECHNOLOGY 1983年第10期1卷 847-&页

作者： BULL, DN Daniel N. Bull Ph.D. is a consultant in fermentation technology and president of Satori Corporation P.O. Box 1730 Montclair N.J. 07042. (201) 783-9787.REFERENCES Graff G.M. Short H. and Keene J.1983. Gene-splicing methods move from lab to plant. Chem. Eng.90: 22-27.|ISI|Broda P.1979. p. 1-3. Plasmids. W. H. Freeman Oxford and San Francisco.Donoghue D.J. and Sharp P.A.1978. Construction of a hybrid bacteriophage-plasmid recombinant DNA vector. J. Bact.136: 1192-1196.|PubMed|ISI|ChemPort|Bok S.H. Hoppe D. Mueller D.C. and Lee S.E.1983. Improving the production of recombinant DNA proteins through fermentation development. Abstract from 186th ACS Natl. Mtg. Washington D.C. Sept. 1.Maniatis T. Fritsch E.F. and Sam-brook J.1982. p. 88. Molecular Cloning. Cold Spring Harbor Laboratory. Guidelines for research involving recombinant DNA molecules June 1983 Fed. Reg.48: 24556-24581. Modifications of physical containment recommendations for large-scale uses of organisms containing recombinant DNA molecules. 1983. Recomb. DNA Tech. Bull.6: 69-70.Bull D.N. Thoma R.W. and Stinnett T.E.1983. Bioreactors for submerged culture. In:Adv. in Biotechnological Proc. A. Mizrahi and A. L. van Wezel (eds.) 1: 1-30.Schmidli B.L. and Swartz R.W.1982. Design considerations for aseptic fermentation. Presentation at 184th ACS Natl. Mtg. Kanas City MO.Sittig W.1982. The present state of fermentation reactors. J. Chem. Tech. Biotechnol.32: 47-58.|ISI|Strek F.1963. Intl. Chem. Eng.3: 533.Uhl V.W. and Gray J.B.1996. Mixing Theory and Practice Vol. I. Academic Press New York.Peters M.S. and Timmerhaus K.D.1968. p. 542. Plant Design and Economics for Chemical Engineers. McGraw-Hill New York.Dickey D.S. and Hicks R.W. Fundamentals of agitation. Chem. Eng.83: 93-100.Oldshue J.Y.1983. Fluid mixing technology and practice. Chem. Eng.90: 82-108.Kipke K.D.1981. Heat transfer in aerated non-Newtonian fluids. Abstract from 2nd Eur. Cong. Biotech. Eastbourne UK April 5-10.Blakebrough N. McM

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Abstracts

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Environmental Management 1977年第1期1卷 67-96页

作者： Frankenfeld, John W. Schulz, Wolfgang McMurty, George J. Petersen, Gary W. May, G. A. Hering, F. S. Schwartz, J. I. Heywood, J. B. Chigier, N. A. Grohse, E. W. Walker, J. D. Colwell, R. R. Petrakis, L. Pergament, H. S. Thorpe, R. D. Schoepf, Richard W. Krzyczkowski, Roman Henneman, Suzanne S. Hudson, Charles L. Putnam, Evelyn S. Thiesen, Donna J. Parks, G. A. McCarty, Perry L. Leckie, J. O. Schrumpf, Barry J. Simonson, G. H. Paine, D. P. Lawrence, R. D. Pyott, W. T. Leh, M. Elders, W. Combs, J. Caplen, T. Harrison, F. L. Wong, K. M. Heft., R. E. Charnell, Robert L. Lehmann, Edward J. Mallon, Lawrence G. Hatfield, Cecile Adams, Gerald H. Johanning, James Talvitie, Antti Noll, Kenneth E. Miller, Terry Smiarowski, Joseph F. Willis, Cleve E. Foster, John H. Schlesinger, Benjamin Daetz, Douglas Lear, Donald U. Smith, Mona F. Hundemann, Audrey S. Crockett, Pernell W. Werner, Kirk G. Carroll, Thomas E. Maase, David L. Genco, Joseph E. Ifeadi, Christopher N. Lowman, F. G. Christensen, S. W. Van Winkle, W. Mattice, J. S. Harrison, Elizabeth A. Barker, James C. Chesness, Jerry L. Smith, Ralph E. Shaheeen, Donald G. Raney, R. Keith Borton, T. Wezernak, C. T. Raney, R. K. Sherwani, Jabbor K. Moreau, David H. Eisenberg, Norman A. Lynch, Cornelius J. Breeding, Roger J. Johnson, J. D. Foster, K. E. Mouat, D. A. Clark, R. Hyden, John William Owen, Wilfred Bayfield, Neil G. Barrow, Graham C. Stolz, Stephanie B. Wienckowski, Louis A. Brown, Betram S. Keyfitz, Nathan Wilson, W. L. Newman, Peter W. G. Bammi, Deepak Bammi, Dalip Goddard, James E. Chisholm, Tony Walsh, Cliff Brennan, Geoffrey Thompson, K. S. Richardson, R. Jensen, Clayton E. Brown, Dail W. Mirabito, John A. Cowing, Thomas G. Binghamton, Suny Siehl, George H. Albrecht, O. W. Alexander, Ariel Barde, Jean -Philippe Darby, William P. McMichael, Francis Clay Dunlap, Robert W. Muckleston, Keith W. Frankenhoff, Charles A. Giulini, Lorenzo T. Wyatt, T. Black, Peter E. Keating, William Thomas Leonard, M. E. Fisher, E. L. Brunelle, M. F. Dickinson, J. E. Pethig, Rudiger Clapham Exxon Research & Engineering Co. Linden Government Research Lab Coast Guard Washington D.C. Department of Transportation Washington D.C. Office For Remote Sensing of Earth Resources. NASA Earth Resources Survey Program Pennsylvania State University Washington D.C. Department of the Navy Washington D.C. Cambridge. Dept. of Mechanical Engineering Massachusetts Inst. of Technology USA Huntsville. School of Graduate Studies and Research Alabama Univ. USA Dept. of Microbiology. Office of Naval Research Maryland Univ. Arlington Research and Development Co. Pittsburgh AeroChem Research Labs. Inc. Princeton Dept. of the Interior Office of Library Services. Bibliographic Series (Final) Washington D.C. Interplan Corp. Santa Barbara Urban Mass Transportation Adm. Washington D.C. Naval Underwater Systems Center Newport Calif. Mercury Project. National Science Found Stanford Univ Washington D.C. Div. of Advanced Environmental Research & Tech. USA Corvallis. NASA Earth Resources Survey Program Oregon State Univ. Washington D.C. Riverside. Inst. of Geophysics and Planetary Physics National Science Foundation California Univ. Washington D.C. Livermore Lawrence Livermore Lab. California Univ. USA Atlantic Oceanographic and Meteorological Labs. National Oceanic and Atmospheric Administration Miami National Technical Information Service Springfield Miami Univ. Coral Gables School of Law National Oceanic and Atmospheric Administration Rockville National Academy of Sciences Office of Sea Grant Washington D. C. School of Law National Oceanic and Atmospheric Administration Office of Sea Grant. Rockville Norman. Dept. of Civil Engineering and Environmental Science. Urban Mass Transportation Administration Oklahoma Univ. Washington D. C. Knoxville.Dept. of Civil Engineering. Federal Highway Administration Tennessee Univ. Washington D. C. Amherst.Water Resources Research Center. Office of Water Research and Technology Massachusetts Univ. Washington D. C. Calif. Dept. of Industria

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