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GEOMETRIC STATE-SPACE THEORY IN LINEAR-MULTIVARIABLE control - STATUS-REPORT

AUTOMATICA 1979年第1期15卷 5-13页

作者： WONHAM, WM Systems Control Group Dept. of Electrical Engineering University of Toronto Toronto Canada M5S 1A4

With the renewed emphasis in control theory on qualitative structural issues, as distinct from techniques of optimization, the last decade has brought significant growth in the application of geometric ideas to the formulation and solution of problems of controller synthesis. In this article we review the status of geometric state space theory as developed for application to systems that are linear, multivariable and time-invariant. After a brief summary of the underlying geometric concepts (( A , B )-invariant subspaces and ( A , B )-controllability subspaces) we outline two standard problems of feedback control that have been successfully attacked from this point of view, and briefly survey recent results in a range of other topic areas. Then we discuss certain issues of methodology, and conclude with some remarks on computational procedures.

关键词： algebraic system theory decoupling Geometric state-space theory multivariable control systems regulator theory servomechanisms

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A multivariate controller for an automotive gas turbine

A multivariate controller for an automotive gas turbine

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ASME 1979 International Gas Turbine Conference and Exhibit and Solar Energy Conference, GT 1979

作者： Winterbone, D.E. Munro, N. Nuske, D.J. Dept. of Mechanical Engineering University of Manchester Institute of Science and Technology Manchester United Kingdom Control Systems Center University of Manchester Institute of Science and Technology Manchester United Kingdom Mechanical Engineering Dept. University of Manchester Institute of Science and Technology Manchester United Kingdom Department of Mechanical Engineering Queenslands Institute of Technology Brisbane Australia

ISBN: (纸本)9780791879672

A complete control system design study is described, starting with a non-linear mathematical model and finishing with the control hardware. The basic objective of the study was to design a controller which reduced the characteristically poor response of the two-shaft automotive gas turbine. This was achieved by identifying the reasons for the acceleration delay and then designing the controller to compensate for them. The gas turbine was simulated by means of a quasi-steady non-linear thermodynamic model implemented on a digital computer. Careful manipulation of the equations enabled the model to run in real-time. This model was linearized at various operating points and the transfer functions obtained were compared with those measured on the plant. The control system was designed using Rosenbrock's multivariate inverse Nyquist array technique. These compensators were grafted onto the original single loop control box and fitted to the engine. The results obtained on the engine test bed are compared with those using the original controller. A very large reduction in response lag is obtained with the multivariable control system. © Copyright 1979 by ASME.

关键词： controllers

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Design of aircraft autostabilisation systems using the inverse nyquist array method

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IFAC Proceedings Volumes 1977年第6期10卷 625-631页

作者： T.R. Crossley N. Munro K.S. Henthorn Dept. of Aeronautical & Mechanical Engineering University of Salford Salford M5 4WT England Control Systems Centre U.M.I.S. T. P. O. Box 88 Sackville St. Manchester M60 1QD England Dept. of Electrical Engineering Trent Polytechnic Trent England

Rosenbrock's inverse Nyquist array design method for multivariable systems is used to determine controllers for the autostabilisation of a slender delta-winged aircraft. The inverse Nyquist array method is reviewed briefly and is applied to a linear model of an aircraft flying at a Mach number of 0.3, at sea level. The resulting multivariable compensators reduce the interaction between the aileron control and the sideslip angle and between the rudder control and the bank angle such that single-loop compensators can be designed to achieve satisfactory handling qualities at this flight condition.

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Bond graph modelling techniques applied to a tape drive system

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IFAC Proceedings Volumes 1977年第6期10卷 167-173页

作者： N. Munro B.A. White J. Kennedy Control Systems Centre U.M.I.S.T. P.O. Box 88 Sackville St. Manchester M60 1QD England Dept. of Elect. Engineering Bath University Bath England Dept. of Elect. Engineering U.M.I.S. T. P. O. Box 88 Sackville St. Manchester M60 1QO England

The Bond Graph modelling technique developed by Paynter and extended by Karnopp and Rosenberg is introduced briefly and is illustrated by its application to the modelling of a prototype electro-mechanical tape-drive system. A set of state-space equations representing the system is readily determined from the Bond Graph model, and frequency and time response measurements made on the model correlate well with those of the physical system. The effect of parameter variations and different models for the component parts were readily examined using this approach.

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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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Realtime digital integration for continuous Kalman filtering in nonlinear systems

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Computers and Electrical engineering 1975年第2-3期2卷 131-140页

作者： Gaston, Jerry A. Rowland, James R. Systems Analysis Branch Weapons Control Division Warfare Analysis Dept. Dahlgren VA 22448 United States School of Electrical Engineering Center for Systems Science Oklahoma State University Stillwater OK 74074 United States

The utilization of different numerical integration formulas for on-line continuous Kalman filtering is investigated for nonlinear systems. Variational and extended versions of the Kalman filter are compared on the basis of accuracy and computational speed tradeoffs as input noise levels and system nonlinearity characteristics are varied. Digital simulations are performed on a typical nonlinear system for several combinations of filtering configurations and integration formulas with different step sizes. It is shown by ensemble-averaged Monte Carlo simulations that the second-order Adams-Bashforth formula (AB2) and the variational Kalman filter should be used for the mildly nonlinear system considered. © 1975.

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RT-3: The Second IFAC Round Table Discussion on Fuzzy Automata and Decision Processes

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IFAC Proceedings Volumes 1975年第1期8卷 748-756页

作者： E.H. Mamdani Madan M. Gupta Dept. of Electrical and Electronic Engineering Queen Mary College University of London London El 4NS England Systems and Adaptive Control Research Laboratory College of Engineering University of Saskatchewan Saskatoon Saskatchewan

This report summarizes the main features of the round table discussion on "Fuzzy Automata and Decision Pro¬cesses" which took place during the 6th Triennial IFAC World Congress at MIT in Boston in the late summer of 1975. The meeting was organized by Professor M. M. Gupta following the resounding success of an earlier round table, which he had organized on the same topic and re¬ported in Automatica (22). It was one of the more popular round table sessions held during the Congress and was attended by nearly 50 people. Contributions were offered by 14 authors. Those of whom were able to attend the session brought with them copies of full papers which were distributed to all participants. Because of the large number of contributions each author was asked to give only a brief account of his work, leaving Professor Zadeh to make a larger introductory presenta¬tion. Some very interesting points were made during the discussion that followed the formal presentation. This report gives a shortened account of what was said at the session. The list, including addresses of all the authors present and most of the other participants is given in Section 5. The list of references at the end of this report has been formed by putting together all the key references in the full length papers submitted by the authors.

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The optimal adaptive sampled-data regulator

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Journal of Dynamic systems, Measurement and control, Transactions of the ASME 1974年第3期96卷 334-340页

作者： Schlueter, R.A. Lewis, A.H. Dept. Of Electrical Engineering and Systems Science Michigan State Univ. East Lansing MI United States Systems Control Inc. Palo Alto CA United States

The optimal control problem for sampled-data processes in which sampling is not triggered by a timer, but occurs when one or more outputs attain preset threshold valms is formulated as an adaptive optimal sampled-data regulator problem. Both open loop and closed loop solutions are determined and a comparison of a system's performance with adaptive and with periodic sampling is presented. © 1974 by ASME.

关键词： Optimal control

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Managed Software Evolution 1

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1000年

作者： Ralf Reussner Jan Keim Michael Goedicke Wilhelm Hasselbring Birgit Vogel-Heuser Lukas Märtin

ISBN: (数字)9783030134990

ISBN: (纸本)9783030134983;9783030135010

This open access book presents the outcomes of the “Design for Future – Managed Software Evolution” priority program 1593, which was launched by the German Research Foundation (“Deutsche Forschungsgemeinschaft (DFG)”) to develop new approaches to software engineering with a specific focus on long-lived software systems. The different lifecycles of software and hardware platforms lead to interoperability problems in such systems. Instead of separating the development, adaptation and evolution of software and its platforms, as well as aspects like operation, monitoring and maintenance, they should all be integrated into one overarching process.;Accordingly, the book is split into three major parts, the first of which includes an introduction to the nature of software evolution, followed by an overview of the specific challenges and a general introduction to the case studies used in the project. The second part of the book consists of the main chapters on knowledge carrying software, and cover tacit knowledge in software evolution, continuous design decision support, model-based round-trip engineering for software product lines, performance analysis strategies, maintaining security in software evolution, learning from evolution for evolution, and formal verification of evolutionary changes. In turn, the last part of the book presents key findings and spin-offs. The individual chapters there describe various case studies, along with their benefits, deliverables and the respective lessons learned. An overview of future research topics rounds out the coverage.;The book was mainly written for scientific researchers and advanced professionals with an academic background. They will benefit from its comprehensive treatment of various topics related to problems that are now gaining in importance, given the higher costs for maintenance and evolution in comparison to the initial development, and the fact that today, most software is not developed from scratch, but as part of a c

关键词： Software engineering Software Management Management of Computing and Information systems Theory of Computation

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Robot 2015: Second Iberian Robotics Conference 1

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丛书名： Advances in Intelligent systems and Computing

1000年

作者： Luís Paulo Reis António Paulo Moreira Pedro U. Lima Luis Montano Victor Muñoz-Martinez

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