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IEEE International Conference on Systems, Man and Cybernetics

作者： M.Q.-H. Meng Advanced Robotics & Teleoperation Lab Department of Electrical and Computer Engineering University of Alberta Edmonton AB Canada

The 3D animated simulator emulates an actual robot manipulator in a simulation space. The simulator is intended for use in teleoperation, where the graphical image represents the actual remote manipulator. The robot is viewed from a "camera position". The motion of the tip of the manipulator can be traced out in the simulation space as a continuous 3D line. The interface has the capability to graphically display the angles of the joint. It allows for a more accurate analysis of the simulated motion. The robot trajectory is defined by either a pre-calculated trajectory file or user specified end point and orientation.

关键词： Animation Orbital robotics History Manipulators Computational modeling computer simulation Displays Robot kinematics Graphics Buffer storage

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Initial results from an extreme ultraviolet interferometer operating with a compact laser plasma source

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Journal of Vacuum Science & Technology B: Microelectronics Processing and Phenomena 1996年第6期14卷 3964-3964页

作者： Ray-Chaudhuri, A.K. Krenz, K.D. Nissen, R.P. Haney, S.J. Fields, C.H. Sweatt, W.C. MacDowell, A.A. Advanced Electronic Manufacturing Dept. Sandia National Laboratories Livermore California 94550‐0969 Department of Electrical Engineering and Computer Science University of California‐Berkeley California 94720 Optics and Exploratory Technologies Department Sandia National Laboratories Albuquerque New Mexico 87185 Lucent Technologies Bell Laboratories 510E Brookhaven Lab Upton New York 11973

When characterizing an extreme ultraviolet (EUV) lithographic optical system, visible light interferometry is limited to measuring wave front aberration caused by surface figure error while failing to measure wave front errors induced by the multilayer coatings. This necessitates the development of interferometric techniques at an EUV camera’s operational wavelength (at‐wavelength testing), which is typically around 13 nm. While a laser plasma source (LPS) is being developed as a lithography production source, it has generally been considered that only an undulator located at a synchrotron facility can provide the necessary laserlike point source brightness for EUV interferometry. Although an undulator‐based approach has been successfully demonstrated, it would be advantageous to test a camera in its operational configuration with an LPS. We are developing the latter approach by utilizing extended source size schemes to provide usable flux throughput. A slit mounted at the source plane can provide the necessary spatial coherence for lateral shearing interferometry. Initial results from an EUV lateral shear interferometer based on the Ronchi test are presented.

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Optimal local register allocation for a multiple-issue machine 94

Optimal local register allocation for a multiple-issue machi...

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Proceedings of the 1994 International Conference on Supercomputing

作者： Meleis, W.M. Davidson, E.S. Advanced Computer Architecture Lab Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor MI

ISBN: (纸本)9780897916653

This paper presents an algorithm that allocates registers optimally for straight-line code running on a generic multi-issue computer. On such a machine, an optimal register allocation is one that minimizes the number of issue slots that the code requires. Optimal spill selection and load/store placement are used to minimize the number of additional issue slots needed, given a schedule for the non-memory reference instructions and a fixed number of available physical registers. The generic multi-issue machine model closely models the operation of vector and VLIW processors, and could be extended to model super-scalar processors. The algorithm uses dynamic programming to search the state space of feasible register allocations; implicit and explicit state pruning are used to make the problem tractable without sacrificing optimality. The optimal allocation produced by the algorithm for a substantial example is presented.

关键词： Dynamic programming

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

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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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