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Modular secondary voltage control based on local information

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1997年第3期7卷 179-184页

作者： Gubina, F Curk, J [?]Prof. Dr. Ferdinand Gubina (1939) received the Diploma Engineer M.Sc. and Dr. Sc. dcgms from h e University of LjubljandSlovenia in 1963. 1969 and 1972. respectively. From 1963 he was with the “Milan Vidmd” Electroinstitute Ljubljana. He was heading the Power System Opention and Control Department. In 1970 he joined for one year the Ohio State University Columbus Ohio as a teaching associate. Since 1988 he has been professorat the University of Ljubljana. His main interests lie in the area of electric power system operation and control. He is men ber of SC 39 CIGRE.ParislFrance and president of the National CIGRE Committee. (University of Ljubljana Faculty of Electrical and Computer Engineering Tmska256 loo0 Ljubljanalslovenia. Phone: + 38 66 I I2646 29 Fax: +38 66 1 I2646 30. E-mail: gubina@lddees.fer.unilj.si)

A new concept of highly decentralized secondary voltage control is presented. The concept is based on secondary voltage controllers attacked to each reactive power source. The secondary controllers utilize only local information available from measurements at the generating bus and they act completely autonomously. To successfully attain information on the electrically close load bus behaviour describing their voltage profile, a group of fuzzy sets is derived based on intrinsic load node properties and statistics of their voltage deviations. They are used in the fuzzy decision process to yield new reference setting for primary voltage controllers. The tests results of proposed modular secondary control are presented for standard and non-standard networks. The efficacy of the new concept is demonstrated.

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Influence of human engineering on manning levels and human performance on ships

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NAVAL ENGINEERS JOURNAL 1997年第5期109卷 67-76页

作者： Anderson, DE Oberman, FR Malone, TB Baker, CC David E. Anderson:has a bachelor of science degree in environmental engineering from Florida Technological University and a master's degree in environmental engineering from the University of Central Florida. He is a graduate of the Naval Sea Systems Command's Engineer-In-Training (EIT) Program. Mr. Anderson was instrumental in introducing the collective protection system (CPS) in the U.S. Navy developing the initial forward-fit package for the USS Gunston Hall and the engineering change proposal (ECP) for the USS Wasp. In 1990 he joined the Human Systems Integration (HSI) Division (SEA 55W5) where he was task leader for auxiliary ships. He is currently the HSI manager for the future technology variant of the SeaLift ship and the future carrier. Association of Scientists and Engineers 33rdAnnual Technical Symposium 26 April 1996. Fred R. Oberman:has B.A. and M.A. degrees from the University of Chicago and Loyola University (experimental psychology) and an M.S. degree in industrial engineering and operations research from Virginia Polytechnic Institute (VPI). He has more than 30 years experience in HSI management planning research analysis design and testing in government and private sector positions. He is currently responsible for NavSea HSI generic research and tool development efforts. He is responsible for Human Engineering Specifications and Standards (Commercial Hypertext) and is the NavSea 03D7 representative on HSI in Performance Specifications and for integration of HSI within Integrated Logistic Support (ILS). He has served as DoD HSI SubTAG chair and member of the Simulation and Modeling Test and Evaluation Display and Control Systems Human Computer Interaction Specifications and Standards and Systems Design Sub Tags as a member of the Society of Naval Architects and Marine Engineers (SNAME) Systems Safety Panel and a member of NATO RSG 14 on man-machine analysis. Thomas B. Malone: CHFEP received a Ph.D. in experimental psychology from Fordham University in 1964. He is president of Carlow

The objectives of Human engineering (HE) are generally viewed as increasing human performance, reducing human error, enhancing personnel and equipment safety, and reducing training and related personnel costs. There are other benefits that are thoroughly consistent with the direction of the Navy of the future, chief among these is reduction of required numbers of personnel to operate and maintain Navy ships. The Naval Research Advisory Committee (NRAC) report on Man-Machine Technology in the Navy estimated that one of the benefits from increased application of man-machine technology to Navy ship design is personnel reduction as well as improving system availability, effectiveness, and safety The objective of this paper is to discuss aspects of the human engineering design of ships and systems that affect manning requirements, and impact human-performance and safety The paper will also discuss how the application of human engineering leads to improved performance, and crew safety, and reduced workload, all of which influence manning levels. Finally, the paper presents a discussion of tools and case studies of good human engineering design practices which reduce manning.

关键词： Human engineering

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A control structure for robotic dynamic manipulation

A control structure for robotic dynamic manipulation

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IEEE International Conference on systems, Man and Cybernetics

作者： Xin-Zhi Zheng K. On M. Yamakita M. Katayama K. Ito Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama Japan Department of Control and System Engineering Tokyo Institute of Technology Tokyo Japan Department of Information and Computer Sciences Toyohashi University of Technology Toyohashi Japan

A control framework for robot systems to perform dynamic manipulation tasks, such as robotic batting, is presented. A properly preplanned trajectory for manipulators is recognized to be important to enlarge the probability of success. A nominal path for manipulator to travel in swing motion is computed while optimizing the stochastic dynamic manipulability measure to cope with the unpredictable deviation of the ball. A nominal trajectory along the path is then planned in a minimum-time approach for the benefit of catching as accurately as possible the ball behavior which is observed visually and estimated online. A control structure, which consists interpolatively of a path velocity controller to follow the nominal trajectory and a resolved-acceleration-natured ball deviation compensating controller, is proposed. The effectiveness of the proposed approach is examined using computer simulations.

关键词： Robot control Manipulator dynamics Velocity control control systems Humans Predictive models systems engineering and theory Stochastic processes computer simulation Application software

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A system structure with trajectory planning and control for robotic dynamic manipulation

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Advanced Robotics 1996年第7期11.0卷 695-711页

作者： Zheng, Xin-Zhi Ono, Kazuya Yamakita, Masaki Katayama, Masazumi Ito, Koji Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama 226 Japan Department of Information and Computer Sciences Toyohashi University of Technology Toyohashi 441 Japan Department of Control and System Engineering Tokyo Institute of Technology Tokyo 152 Japan Ishikawajima-Harima Heavy Industries Co. Ltd. Tokyo Japan

We present a control framework for robot systems to perform dynamic manipulation tasks, with robotic batting as an example. A properly preplanned trajectory for manipulators is recognized to be important to increase the probability of success. A nominal path for a manipulator to travelin a swing motion is computed while optimizing the stochastic dynamic manipulability measure to cope with the unpredictable deviation of the ball. A nominal trajectory along the path is then planned in a minimum-time fashion for the benefit of catching the ball as accurately as possible, thebehavior of which is observed visually and estimated on-line. A control structure consisting interpolatively of a path velocity controller to follow the nominal trajectory and a resolved-acceleration-natured ball-deviation compensating controller, together with a ball motion prediction, isproposed. The effectiveness of the proposed approach is examined using computer simulations. The strategy provided in this paper will be useful to make manipulators perform further task requirements better for a wide range of dynamic manipulations. © VSP and Robotics Society of Japan 1998.

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Reliability evaluation of highly reliable computer control systems for energy generation, transmission and distribution

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EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1996年第2期6卷 111-118页

作者： Kochs, HD Dieterle, W Dittmar, E [?]Prof. Dr.-Ing. Hans-Dieter Kochs (1943) VDE is head of the Department of Computer Science and Information Processing Systems at the Gerhard Mercator-University of Duisburgl Germany. He received the Dip1.-Ing. degree in Electrical Engineering and the Dr.-Ing. degree from the RWTH Aached Germany in 1972 and 1976 respectively. From 1979 to 1991 he was system engineer and division leader in the areas of R & D of highly-reliable large-scale control and information systems (AEGIDaimler FAG-Kugelfischer). Since 199 1 he has been Professor at the University of Duisburg. His current R & D areas are reliability safety and fault tolerance of technical systems especially automation systems and hybridknowledge based systems including fuzzy-logic and neural networks. (Gerhard-Menxitor-University-GH Duisburg FB 71FG 10 Lotharstr. 1 D-47048 Duisburg T +49203/379-2204 Fax +49203I379-2205)

The paper presents the results of an application-based reliability study of distributed computer control systems with very high reliability demand, e.g. for supervision and control of power plants and energy distribution systems. A reliability classification scheme is presented and typical redundant control system structures are evaluated and classified due to their system reliability Special focus is placed on assessing the influence of the communication system on total system reliability.

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Measuring the distance and orientation of a planar surface using nonstructured lighting

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systemS AND computerS IN JAPAN 1996年第8期27卷 83-92页

作者： Tsukiyama, T Member Electrotechnical Laboratory Tsukuba Japan 305 Tosbifumi Tsukiyama:graduated in 1972 from the Biological Engineering Department Osaka University where he also received his Dr. of Eng. degree. He joined Electrotechnical Laboratory Ministry of Tread and Industry (Japan) in 1972. At present he is Senior Researcher at Computer Vision Section Intelligent Systems Division ETL. He was a Visiting Researcher at University of Illinois during 1984–1985. He has been interested in vision system for mobile robots and image processing architectures. He is a member of the Society of Instrumental and Control Engineers Japan Robotics Society of Japan and Information Processing Society of Japan.

This paper proposes a method of 3-dimensional measurement of a planar surface by using two fixed light sources and a TV camera. A set of two images is recorded by the camera switching on each light alternately. The peak of the luminance distribution in each image is detected, and the orientation and distance of the planar surface are calculated. The position of the peak of a luminance distribution can be estimated accurately by using an image processing. The light sources can be conventional apparatus with no particular structure. The method is simple and suitable for a vision system on an indoor mobile robot.

关键词： distance to surface orientation of planar surface point light source luminance distribution ring light

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Neural network applications

Neural network applications

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Electronic Technology Directions to the Year 2000

作者： E. Vonk L.C. Jain L.P.J. Veelenturf Control Systems and Computer Engineering Group BSC Laboratory for Network Theory Department of Electrical Engineering University of Twente Enschede Netherlands Knowledge-based Engineering System Group School of Electronic Engineering University of South Australia Adelaide Australia

Artificial neural networks, also called neural networks, have been used successfully in many fields including engineering, science and business. This paper presents the implementation of several neural network simulat... 详细信息

关键词： Neural networks Neurons Artificial neural networks systems engineering and theory Hopfield neural networks Process control Knowledge engineering Supervised learning Clustering algorithms Application software

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Book reviews

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International Journal of Human–computer Interaction 1995年第4期7卷 403-409页

作者： Baijun Zhao[a] Liwana S. Bringelson[b] Qing Gong[c] Andrew Sears[d] Jason S. Priebe[e] [a] GSM System Requirements and Architecture Cellular Infrastructure Group Motorola Ltd. Arlington Heights IL [b] Department of Industrial and Manufacturing Engineering Western Michigan University Kalamazoo MI [c] IBM Corporation Boca Raton FL [d] School of Computer Science De-Paul University Chicago IL [e] Department of Computer Science University of North Carolina Chapel Hill NC

Jirotka, M., and Goguen, J. A. (1994).Requirements engineering: Social and Technical Issues. 296 pages, US$52.50. San Diego: Academic Press, Inc. (ISBN 0–1238–5335–4)Dillon, A. (1994).Designing Usable Electronic Text: Ergonomie Aspects of Human Information Usage. 175 pages, Cloth $75.00, Paper $32.00. Bristol, PA: Taylor & Francis, Ltd. (ISBN 0–7484–0113‐X)Oppermann, R. (1994).Adaptive User Support. 253 pages, US$49.95. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc. (ISBN 0–8058–1655–0)Landauer, T. K. (1995).The Trouble with computers. 296 pages, US$27.50. Cambridge, MA: The MIT Press. (ISBN 0–262–12186–7).Weimer, J. (1995).Research Techniques In Human engineering. 504 pages, US$63.75. Englewood Cliffs, NJ: Prentice Hall PTR. (ISBN 0–13–097072–7).

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Automatic generation of a neural network architecture using evolutionary computation

Automatic generation of a neural network architecture using ...

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Electronic Technology Directions to the Year 2000

作者： E. Vonk L.C. Jain L.P.J. Veelenturf R. Johnson Control Systems and Computer Engineering Group BSC Laboratory for Network Theory Department of Electrical Engineering University of Twente Enschede Netherlands Knowledge-based Engineering System Group School of Electronic Engineering University of South Australia Adelaide Australia Weapons Systems Division Defence Science and Technology Organisation Salisbury SA Australia

This paper reports the application of evolutionary computation in the automatic generation of a neural network architecture. It is a usual practice to use trial and error to find a suitable neural network architecture. This is not only time consuming but may not generate an optimal solution for a given problem. The use of evolutionary computation is a step towards automation in architecture generation. In this paper a brief introduction to the field is given as well as an implementation of automatic neural network generation using genetic programming.< >

关键词： Neural networks computer architecture Evolutionary computation Genetic programming Network topology Genetic algorithms Biological cells systems engineering and theory Knowledge engineering Australia

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