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EXACT PENALTY FUNCTION ALGORITHM FOR SOLVING GENERAL CONSTRAINED PARAMETER OPTIMIZATION PROBLEMS

AUTOMATICA 1979年第2期15卷 175-188页

作者： GESING, W DAVISON, EJ UNIV TORONTO DEPT ELECT ENGNTORONTOONTARIOCANADA

An exact penalty function type of algorithm is proposed to solve a general class of constrained parameter optimization problems. The proposed algorithm has the property that any solution obtained by it will always satisfy the problem constraints, and that it will obtain a solution to the constrained problem, within a given specified tolerance, by solving a single unconstrained problem, i.e. it is not necessary to solve a sequence of unconstrained optimization problems. The algorithm applies a modification of Rosenbrock's (Rosenbrock, 1960) polynomial boundary penalty function, and a negative exponential penalty function with moving parameters, to modify the objective function in the neighborhood of the constrained region; a robust unconstrained algorithm (Davison and Wong, 1975) is then used to solve the resulting unconstrained optimization problem. Some standard test functions are included to show the performance of the algorithhm. Application of the algorithm is then made to solve some computer-aided design problems occurring in the area of control system synthesis.

关键词： computational methods computer-aided design computer-aided system design constraint theory control engineering computer applications control system synthesis Nonlinear programming numerical methods optimal search techniques optimization

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The Design of Distributed computer control Systems

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IFAC Proceedings Volumes 1979年第9期12卷 157-179页

作者： A. Nader Department of Computing and Control Imperial College of Science and Technology London U K

The complexity of decentralised control, large scale systems and distributed processing are combined in the design of distributed computer control systems. A general view of the problems that arise in the design of distributed computer control systems and some of the present approaches to solve them are presented. Particular emphasis in the cross fertilization of computer science and control theory is made.

关键词： computer control control engineering computer applications Decentralised control Distributed computer control systems Hierarchical systems Industrial control Multiprocessing systems Parallel Processing Process control

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computer Configuration for The Development and Testing of Microprocessor Based control Algorithms

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IFAC Proceedings Volumes 1979年第3期12卷 109-114页

作者： J.O. Gray G.D. Hassapis Department of Electrical Engineering and Electronics U.M.I.S.T. Manchester U.K.

A development and test facility for microprocessor based control algorithms has been devised with emphasis on minimising hardware cost and making the maximum use of existing facilities. A minicomputer with resident cross assembler is used to develop control programs which can be directly transferred by a digital interface to a microprocessor acting as a digital controller in a hybrid simulation of the system dynamics. This configuration allows both hardware and software elements of any installation to be simultaneously evaluated. The facility is applied to the design of compensators for a chemical process.

关键词： control engineering computer applications microprocessors minicomputers hybrid computers process control

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Automatic Synthesis of a Packaged Program for Real Time Technological Process control

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IFAC Proceedings Volumes 1979年第7期12卷 285-298页

作者： I. Hantuch Institute of Technical Cybernetics Slovak Academy of Sciences Bratislava Czechoslovakia

This contribution refers to certain problems bearing upon the formation of a system generator programing medium of an automatic synthesis for the modular construction of a packaged program for real time technological process control. The package is made up of standard subroutines-functional modules, carrying out the basic control functions. The user defines the task in the problem-oriented "graf language" designed by an analysis of project documentation for automated systems of technological process control. From the viewpoint of software, this is an establishment of a communication and synchronization system, implemented by standard connectors and starting subroutines, operating over the central database and by a system of tables for recording required items of information on the structure of the control package.

关键词： control system synthesis control engineering computer applications programing languages real time applications

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Identification of Coherent Machine Groups in Electric Power Systems

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IFAC Proceedings Volumes 1979年第5期12卷 241-247页

作者： E. Ruppert Filho Electrical Engineering Department of FEC/UNICAMP - Campinas - SP - Brasil

This paper describes a method to make fast and reliable the identification of coherent machine groups for Electric Power Systems dynamic equivalents construction to be used in planning studies and in on-line dynamic security, may be. The method is based on Lyapunov Direct Method and uses some simplifications on the nodal bus admittance matrix of reduced to generation buses system.

关键词： Computational methods control engineering computer applications dynamic stability Lyapunov method nonlinear systems power system control

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Instructional computer Graphics in control System Design

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IFAC Proceedings Volumes 1979年第7期12卷 641-647页

作者： M.J. Wozny Interactive Computer Graphics Center Rensselaer Polytechnic Institute Troy New York U.S.A.

The world-wide demand for increased industrial productivity has created a critical need for engineers trained in computer graphics and computer-aided design. Rensselaer Polytechnic Institute is the first U.S. university to make a major commitment to computer graphics and CAD by establishing a 1.2 million dollar Center for Interactive computer Graphics in the School for Engineerina. This paper explores the role of interactive computer graphics for instruction and design in control, based on the experiences gained at RPI.

关键词： computer-aided design computer-aided instruction computer graphics control engineering computer applications educational aids feedback optimal control

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Implementation and Application of Microprocessor-Based Self-Tuners

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IFAC Proceedings Volumes 1979年第8期12卷 197-208页

作者： D.W. Clarke P.J. Gawthrop Department of Engineering Science Parks Road Oxford U.K.

The implementation of self-tuning controllers using a portable microcomputer system is described. Self-tuning control theory is shown to provide a variety of control objectives such as model-reference, optimal Smith prediction and the minimization of a general cost-function. Hardware and software details of the portable computer, SESAME, are presented with particular reference to the use of a new high-level language, control Basic, and to the coding of the recursive parameter updating routine. Studies of the application of self-tuning to the control of roomtemperature, acid neutralization, and batch chemical reactors in industry are outlined.

关键词： Adaptive control chemical variables control computer software control engineering computer applications direct digital control microprocessors pH control process control stochastic control temperature control

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The Three-Tier Grid control System of Hew;Concepts, Implementation, Experience

引用

IFAC Proceedings Volumes 1979年第5期12卷 266-273页

作者： L. Höhne D. Rumpel Network Operations Department Hamburgisehe Electricitäts-werke Hamburg Germany Department of Electrical Engineering Duisburg University Duisburg Germany

The 400/110/10 kV network of the Hamburgisehe Electricitätswerke (HEW) comprising 10 power plants, 61 substations and 6500 transformer kiosks is under on-line control from 5 centres on 3 operational tiers. The new computerized system for the 2 lower tiers shows novel features as for workflow organisation in the control rooms, data-amendment and protection. A mimic board was not applied. Due to these conditions, the system was designed from scratch, not using standard application software.

关键词： control engineering computer applications Man-machine systems Power distribution

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MPCS: A Microcomputer System for Process control

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IFAC Proceedings Volumes 1979年第3期12卷 83-86页

作者： E. Albertini M. Di Martino M. Del Monaco R. Giovannelli G. Sereni Datamont S.p.A. Via Valassina 22 Milano Italy

A micro-processor based control system is presented. The hardware and software requirements that led to system development are presented and discussed. These resulted in a system software, a high-level package for data acquisition monitoring and alarming and a high level process control oriented language. The basic idea was to build an end-user oriented system to allow process or control engineers to generate their own control programs. Finally two industrial applications are presented: 1) a distributed control of aluminium electrolytic cells and 2) a two-level control of an ethane/ethylene superfractionator.

关键词： Microprocessors operating systems data acquisition programming languages control engineering computer applications distributed control petrochemical control

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DISCO: A Distributed, Supervisory and control Program

引用

IFAC Proceedings Volumes 1979年第3期12卷 115-118页

作者： D. Grant Fisher A. Brennek Department of Chemical Engineering University of Alberta Edmonton Alberta Canada T6G 2G6

DISCO is a di stributed, supervisory and co ntrol system designed for use in industrial process control applications and/or research and development laboratories. The program is a sequential file processor designed to execute on a distributed network of micro + mini + maxi computers in conjunction with the computer vendor's operating system and network software. A modular structure, standard software interfaces, and a high level of support for the user-interface provide a very flexible, user-oriented system that can handle a wide variety of applications.

关键词： computer software control engineering computer applications computer control Process control

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