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Annual Conference of Industrial Electronics Society

作者： G.S. Buja M.I. Valla Department of Electrotechnics Electronics and Informatics University of Trieste Trieste Italy Laboratory of Industrial Electronics Control and Instrumentation Engineering Faculty National University of La Plata La Plata Argentina

An analysis of the control characteristics of a switched reluctance motor drive is performed taking into account the saturation of the magnetic circuit of the motor. The drive operation is described, the control variables and the related ranges are identified, the relationships between the average torque and such variables are calculated, and the torque capability is found. Both the current-source supply and the voltage source supply of the motor are considered. Schemes for speed control are also presented.< >

关键词： Reluctance motors Magnetic variables control Reluctance machines Magnetic analysis Performance analysis Switching circuits Magnetic switching Magnetic circuits Torque control Current supplies

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Neural computation for controlling the configuration of 2-dimensional truss structure

Neural computation for controlling the configuration of 2-di...

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International Conference on Neural Networks

作者： Tsutsumi Katayama Matsumoto Division of System Science The Graduate School of Science and Technology Kobe University Kobe Japan Department of Instrumentation Engineering Faculty of Engineering Kobe University Kobe Japan

A method for the manipulator position control was previously proposed by K. Tsutsumi et al. (1987) on the basis of the Hopfield scheme for neural computation. According to the proposed method, the manipulator is modeled not by using polar coordinates but by using the distances between the joint locations alone. The analog neural network realises parallel control by minimizing the total of the energy functions based on the distances, and it can easily treat not only the ordinary manipulator with rigid links but also the elastic arm. The proposed control method with parallelism and flexibility is applied to a two-dimensional truss structure composed of elastic members. Simulation demonstrates that the configuration of the structure can be controlled by adjusting the initial configuration and by tuning the energy balance.< >

关键词： Neural networks Position control Robots

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Batch-Type Process control by Microprocessor with Heuristic Method

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IFAC Proceedings Volumes 1986年第13期19卷 231-236页

作者： H. Sakuta Y. Yoshitani R. Hoshino Department of Mechanical System Control Engineering Faculty of Engineering the Technological University of Nagaoka Nagaoka 940-21 Japan Hokuetsu Paper Mills Ltd. Zao-cho Nagaoka 940 Japan

Batch-type process control with heuristic method is studied. The control system for vulcanized fibre production process on a 16-bits microcomputer is developed. ZnCl 2 diffusion control in fibre sheets is estimated by on-process numerical calculations of FDM. The ovarall diffusion coefficient is measured by the com bination of a series of experiments and corresponding numerical calculations. Mixing control of the solutions to get required con centration is performed by suggesting applicable combination to be chosen by the operator. This system can reduce a half of process time.

关键词： Computer-aided instruction heuristic programming numerical analysis partial differential equations process control

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A New Approach to Optimal control of Supercritical Once-Through Steam Generator

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IFAC Proceedings Volumes 1984年第2期17卷 2169-2174页

作者： T. Katayama T. Ohki T. Inoue S. Nakayama Department of Applied Mathematics and Physics faculty of Engineering kyoto University Kyoto 606 Japan Control System Design Department Boiler plant Division lshikawajima-Harima Heavy Industries Company Limited Tokyo 135 Japan

This paper presents a new approach to the design of an optimal servo-type controller for a supercritical once-through steam generator under variable pressure operation. To derive a state-space model of the thermal power plant, a linear multivariable input-output model is fitted to the open loop data obtained from the actual plant. The applicability of state-space models obtained are checked on the basis of the real step response characteristics of the plant. Under the assumption that the time-varying desired demands are previewable, a new controller with state feedback plus integral and preview actions is developed by extending the method due to Tomizuka and Rosenthal(1979). It is shown by digital simulation that the preview of future demands is effective for improving the performance of the plant.

关键词： Power plant control Steam generators Boilers Identification Multivariable systems Optimal control LQI control Preview action

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A synaptic modification algorithm in considaeration of the generation of rhythmic oscillation in a ring neural network

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Biological Cybernetics 1984年第3期51卷 211-211页

作者： Kazuyoshi Tsutsumi Haruya Matsumoto Division of System Science the Graduate School of Science and Technology Kobe University Kobe Japan Department of Instrumentation Engineering Faculty of Engineering Kobe University Kobe Japan

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AN ADVANCED METHODOLOGY FOR PRELIMINARY HULL FORM DEVELOPMENT

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NAVAL ENGINEERS JOURNAL 1984年第4期96卷 147-161页

作者： LIN, WC DAY, WG HOUGH, JJ KEANE, RG WALDEN, DA KOH, IY Wen-Chin Lin:heads the Ship Powering Division at the David Taylor Naval Ship R&D Center (DTNSRDC). Dr. Lin received his B.S. degree in mechanical engineering from the National Taiwan University in 1957. He was awarded his M.S. degree in naval architecture and Ph.D. in engineering science from the University of California at Berkeley in 1963 and 1966 respectively. From 1966 to 1969 he was employed by ESSO Research and Engineering Company to conduct marine hydrodynamic research for oil tankers and offshore structures. Since joining DTNSRDC in 1969 he has actively conducted and directed hydrodynamic research to advance naval ship design technology and improve ship performance. Active in national and international symposia on ship hydrodynamic research he is recognized for contributions to the ship research community. For the past six years he has been a member of the Performance Committee of the ITTC and currently serves as secretary of the committee. He is a member of SNAME and the Society of Naval Architects of Japan. William G. Day Jr:. has been employed as a naval architect at the David Taylor Naval Ship R&D Center since receiving a B.E.S. degree from the Johns Hopkins University in 1966. He obtained an M.S. E. degree from George Washington University in 1971. As Head Design Evaluation Branch of the Ship Performance Department he is responsible for model experiments to evaluate the hydrodynamic performance of ships and propulsors. He is a member of ASNE and SNAME. In-Young Koh:received his B.S. and M.S. degrees in electrical engineering from Lowell University in 1969 and 1971 respectively and his Ph.D. in applied mechanics from Rensselaer Polytechnic Institute in 1976. Dr. Koh joined DTNSRDC as an electronic engineer specializing in the application of advanced instrumentation and computer techniques to ship research and design. He is currently engaged in research and development of active control systems for naval ship applications. Dr. Koh is a member of ASNE SNAME and IEEE. David Andrew Walden:is

A ship design methodology is presented for developing hull forms that attain improved performance in both seakeeping and resistance. Contrary to traditional practice, the methodology starts with developing a seakeeping-optimized hull form without making concessions to other performance considerations, such as resistance. The seakeeping-optimized hull is then modified to improve other performance characteristics without degrading the seakeeping. Presented is a point-design example produced by this methodology. Merits of the methodology and the point design are assessed on the basis of theoretical calculations and model experiments. This methodology is an integral part of the Hull Form Design system (HFDS) being developed for computer-supported naval ship design. The modularized character of HFDS and its application to hull form development are discussed.

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The Quality control system of Sintering Plant at Kashima Steel Works

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IFAC Proceedings Volumes 1983年第15期16卷 347-355页

作者： o. Arai A. Yamamoto T. Joko K. Inada S. Yumoto Instrumentation and Control Engineering Section Kashima Steel Works Sumitomo Metal Industries Ltd. Ibaraki 314 Japan Iron-making Control Section Kashima Steel Works Sumitomo Metal Industries Ltd. Ibaraki 314 Japan Instrumentation and Control Technology Department Central Research Laboratory Sumitomo Metal Industries Ltd. Hyogo 660 Japan System Planning Department Kahima Steel Works Sumitomo Metal Industries Ltd. Ibaraki 314 Japan

In recent years, the quality control of sintered ore has become more and more important for stable operation of modern blast furnaces where the sinter ratio of feedstock material exceeds 50%. The quality control system of sintering plant has been developed by SMI (Sumitomo Metal Industries, Ltd.), which consists of the measurement systems of free carbon and FeO content in raw materials, the control system of particle distribution of crushed coke and the FeO content in sintered ore. It's well known that the conventional batch sampling method has such limitations for quality control of sintered ore as its poor sampling frequency and time lag before result is acquired. In the past several years, SMI has developed the sensors and control system of sintered ore with satisfactory results. Our research in those several years, the following results are attained. (1) There is close relation between indices of ROI (Reduction and Disintegration Index) and TI (Tumbler Index) of sintered products and the ratio of smaller particle size of crushed coke than 1 mm. (2) FeO content of products is controllable by regulating the coke ratio in relation to the FeD content of raw materials and products. (3) FeO content can be controlled more accurately by regulating the coke ratio in which the effect of free carbon content of raw materials is corrected. From those facts, the following measurement systems are developed. (1) Continuous FeO measurement meter for raw materials ----- The principle of FeD measurement meter consists in inductance change of detecting coil by the FeD content of raw materials. (2) Continuous FeO measurement meter for sintered products. (3) Particle distribution measurement system of crushed coke ----- This system uses an optical pattern recognition method. (4) Free carbon content measurement system of raw materials ----- This system estimates the total carbon consumption by calculating the data of flue gas volume and components. The recent operation has obtained th

关键词： Sintering plant RDI TI Magnetite Meter Sintered Products Raw Materials Coke Breeze Particle Size Distribution Free carbon content Quality control

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IEEE Transactions on Automatic control 1983年第5期28卷 633-633页

作者： Y. Baram Department of Electronic Communications Control and Computer System Faculty of Engineering Tel-Aviv University Tel-Aviv Israel

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AN OVERVIEW OF THE ROLE OF THE NAVSEA HUMAN-FACTORS engineering PROGRAM IN SHIP DESIGN

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NAVAL ENGINEERS JOURNAL 1983年第4期95卷 139-152页

作者： STEIN, NI BENEL, RA MALONE, TB Mr. Norman I. Stein:received his degree in mechanical engineering from the University of Iowa in 1943. MK Stein began his career with the Bureau of Ships Department of the Navy. After his military service with the Army of Occupation in Japan he has held positions with the Corps of Engineering Atomic Energy Commission Walter Reed Army General Hospital and the Protective Structures Development Center Department of the Army. He returned to the Naval Sea Systems Command in 1967 and is currently with the Manning and Controls Integration Branch SEA 55 W16. Mr. Stein is a registered professional engineer in New York state and also is a certified fallout shelter analyst with the Department of the Army. He has authored a comprehensive study on air distribution studies in multi-room shelters presentedpapers on human factors engineering to the Association of Scientists and Engineers and recently contributed a chapter on human factors engineering which will be incorporated in the proposed Naval Sea Systems Handbook on Surface Ship Design. Russell A. Benel:received his Ph. D. in engineering psychology from the University of Illinois at Urbana-Champaign. He is currently a Senior Research Scientist with Essex Corporation where he is the manager of the Man-Machine Systems Department. He has been responsible f o r scientific studies associated with the Human Factors Engineering f o r ships program under contract to the Naval Sea Systems Command specifically the development application and validation of human factors engineering technology f o r surface ship systems such as aircraft launch and recovery propulsion engineering combat direction weapons and total ship systems. He is currently providing Human Factors Engineering Support on the DDG-51. His other activities include a variety of research development test and evaluation activities for military systems. He had been with the Crew Performance Branch of the Crew Technology Division at the USAF School of Aerospace Medicine as a National Research Council Postd

This paper provides a context within which the role of human factors engineering (HFE) for Naval ship design may be understood. HFE is defined and its history as part of engineering design teams is traced. The role of HFE in ship systems design is defined, and the HFE Technology for Ships Program, managed by SEA 061R, is described. The rationale for inclusion of HFE in the design process is presented, the methodology whereby it is incorporated into the design process is detailed, methodology to assess the application of HFE is outlined, and the benefits that will accrue as a result of inclusion of HFE considerations in the design process are documented. The counterpoint to inclusion is illustrated through instances of design-induced human errors. A specific application of HFE in the acquisition process is illustrated through use of the Landing Craft, Air Cushion HFE program plan. The difficulties which may be encountered as the size of the target system expands are described. Potential roadblocks to the required incorporation of HFE are examined for their source and possible ameliorative steps.

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An Adaptive Computer control Method in Hot Strip Rolling

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IFAC Proceedings Volumes 1981年第2期14卷 2495-2500页

作者： T. Katayama T. Morita M. Konishi Department of Applied Mathematics and Physics Faculty of Engineering Kyoto University Kyoto 606 Japan System Control Research Section Asada Research Laboratory Kobe Steel Ltd. Kobe 657 Japan

A new adaptive computer control model in hot strip rolling has been developed. The main idea is to improve the accuracy of the force calculation and to balance the inter-stands load distribution by introducing a new adaptive systems based on the gradient technique and a stochastic approximation-type algorithm. The feasibility of the new method is demonstrated by off-line simulations using actual rolling data. The comparison of the new method with the conventional method shows that the accuracy of the force calculation can be remarkably improved, especially in down-stream stands where the reduction in draft is rather small, and that the inter-stands load distribution can be well balanced.

关键词： Adaptive control hot strip rolling learning systems gradient method performance index

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