IEEE Symposium on Computer-Aided Control System Design

17-19 March 1992

Filter Results

Displaying Results 1 - 25 of 44
  • 1992 IEEE Symposium on Computer-Aided Control System Design (CACSD) (Cat. No.92TH0443-2)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (1347 KB)
    Freely Available from IEEE
  • A matrix and expert system development aid language

    Publication Year: 1992, Page(s):148 - 155
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (607 KB)

    An effort has been made to extend the matrix-oriented MATLAB syntax so that a generic expert system development environment can be incorporated into the control environment. Knowledge constructs such as rules and facts could then be handled by the language parser. The aim is to provide an integrated environment for coupling numeric and symbolic processing. A control system design package that can ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An iteration scheme for dominant singular values

    Publication Year: 1992, Page(s):215 - 217
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    An iteration method is presented for determining the largest singular value (2-norm) of a matrix, and its corresponding singular vectors. Connections with the power method and Bernoulli's method are presented. A formula is derived which describes the relationship between a matrix perturbation and the perturbation of its singular values View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new technique for solving high-index differential-algebraic equations using dummy derivatives

    Publication Year: 1992, Page(s):218 - 224
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    A technique for solving high-index problems by combining symbolic and numerical methods is presented. The technique is a variant of index reduction. In the usual manner, parts of the differential-algebraic equation (DAE) are differentiated analytically and appended to the original system. For each additional equation, a derivative is selected to be replaced by a new algebraic variable called a dum... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The evolution of CACSD tools-a software engineering perspective

    Publication Year: 1992, Page(s):225 - 231
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    The earlier evolution of computer-aided control system design (CACSD) tools is discussed from a software engineering perspective. A model of the design process is presented as the basis for principles and requirements of future CACSD tools. Combinability, interfacing in memory, and an open workspace are seen as important concepts in CACSD. Some points are made about the problem of buy or make when... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Learning and adaptation in control systems with interactive computer graphics

    Publication Year: 1992, Page(s):180 - 187
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    A neural-based computer-aided control system design tool is described. For control purposes, a learning and adaptive neural controller, called the inverse-dynamics neural controller, is proposed for unknown linear dynamical plants. The mathematical relationship describing the dynamics of the plant under control does not need to be known a priori, and no teaching signal is required to guide the lea... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Caesy: a computer-aided engineering system

    Publication Year: 1992, Page(s):232 - 237
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    A new software tool, Caesy (for computer aided engineering system), is described. This tool provides a strong programming environment for research in the development of algorithms and software for computer-aided control system design. An analysis of requirements is presented along with a brief description of the user language and the design of the prototype software implementation View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Discrete event modelling and simulation in Omola

    Publication Year: 1992, Page(s):262 - 268
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    The author describes how discrete event and combined discrete event and continuous-time models are represented in Omola, an object-oriented, equation-based language for representing structured dynamic models. Discrete event behavior is represented by events with state conditions. Events can also be scheduled. The main formalism for representing discrete behavior is difference equations, which are ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An autonomous systems control theory: an overview

    Publication Year: 1992, Page(s):204 - 210
    Cited by:  Papers (14)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    A formal theory for characterizing the control of autonomous, dynamical systems is outlined. The main goal is to establish a coherent blend of conventional feedback control and logic-based model theories that provides a unified framework for design and analysis of autonomous systems. A descriptive style is used to highlight the elements of the theory and some basic results. The theory is based on ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hybrid control

    Publication Year: 1992
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    An effort to investigate an environment for the design, implementation and evaluation of hierarchical, distributed, intelligent hybrid control is summarized. Hybrid control here means an integrated approach to continuous physical devices (mechanical, electrical, hydraulic, etc.) being controlled by discrete computational units (digital CPUs). Nonlinear dynamical systems theory is being used to sup... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hypermedia in CACSD education for distributed parameter systems

    Publication Year: 1992, Page(s):250 - 253
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Hypermedia in computer-aided control system design (CACSD) education is discussed. Experiences with using the TDP simulator for distributed parameter systems are presented. Individual tools for modeling, designing, and simulating distributed parameter systems in the TDP simulator are discussed. Special attention is paid to interfaces between these tools View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency response computation via rational interpolation

    Publication Year: 1992, Page(s):188 - 195
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A simple rational interpolation method is given for estimating a frequency response matrix. The method is based on a generalization of the resolvent identity that avoids the potential inaccuracies introduced by the subtraction of nearly equal values in the calculation of the difference terms. When coupled with a pole cancellation method, the resulting interpolation algorithm is accurate and effici... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Software standards in the control systems community

    Publication Year: 1992, Page(s):238 - 241
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The need for standards in the control community is briefly motivated. The activities of the IFAC/IEEE-CSS Working Group on guidelines for computer-aided control system design (CACSD) software are described. The emerging ISO standard for data exchange is highlighted as an example of existing standards activities which the control community could take advantage of. An invitation to contribute to the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model for visual observation under uncertainty

    Publication Year: 1992, Page(s):269 - 274
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    The problem of observing a moving agent is addressed. A modeling approach for the visual system and its observer is advocated in which a discrete-event dynamic system (DEDS) framework is developed and events are defined as ranges on parameter subsets. In particular, a system for observing a process in which a robot hand manipulates an object is proposed. A stabilizing observer is constructed, and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Designing databases in real-time embedded systems

    Publication Year: 1992, Page(s):285 - 292
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    The issues involved in implementing databases in hard real-time systems are investigated. The requirements of real-time databases are examined, and two new correctness measures, external consistency and temporal consistency, are proposed. An approach to defining transaction periods so that databases can guarantee the desired real-time performance is studied View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The need for automated formula manipulation in object-oriented continuous-system modeling

    Publication Year: 1992, Page(s):1 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    Automated formula manipulation is shown to be central to object-oriented continuous-system modeling. Such techniques are needed to (i) solve the causality assignment problem in modeling any kind of energy transducer, (ii) generate the equations that result from the couplings between different objects, (iii) automatically reduce structurally singular models, and (iv) take care of algebraic loops th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrating CACSD packages and control libraries; towards more flexible and versatile CACSD

    Publication Year: 1992, Page(s):62 - 67
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A short overview is given of the development of interactive computer-aided control system design (CACSD) packages and control libraries, and of software that has been devised to act as an interface between them. The specific roles of these CACSD components are analyzed. It is concluded that the continuing development of CACSD packages and control libraries offers convenient and promising opportuni... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Domain specific software architectures-command and control

    Publication Year: 1992, Page(s):129 - 136
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    The command and control aspect of the domain-specific software architectures program is discussed. The objective is to develop and demonstrate an architecture-driven, component-based capability for the automated generation of command and control applications. An overview is given of the approach being taken. The automated generation of application components in the message-handling subdomain is th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The ideas behind Omola

    Publication Year: 1992, Page(s):23 - 29
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    The main ideas behind the new universal, equation-based, and object-oriented modeling language Omola are discussed. Omola is designed to support model development and facilitate reuse so a model can be used to solve various problems and so model components can be easily modified to model similar systems. To implement this, Omola supports modern concepts for model structuring. Models can be hierarc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computer aided robust control design for interval control systems

    Publication Year: 1992, Page(s):82 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    MATLAB-based CACSD (computer-aided control system design) implementation of a newly developed body of theory in parametric robust control is discussed. The theory allows the development of a computer-aided design package that virtually extends all classical control analysis and design techniques to handle problems with robustness requirements. A brief description is given of the theory, the CACSD ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Netlib library for the systems and controls community

    Publication Year: 1992, Page(s):211 - 214
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A sublibrary of Netlib, a network-accessible software library, developed for the systems and controls community, is described. It is sponsored by the Computer-Aided Control Systems Design working group of the IEEE Control Systems Society and can be accessed by anyone who can exchange mail with US Internet hosts. Contributions of software which have been placed in the public domain by the authors a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Object-oriented chemical process modeling in Omola

    Publication Year: 1992, Page(s):165 - 172
    Cited by:  Papers (4)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    An object-oriented approach to modeling chemical processes with control systems in the modeling language Omola is discussed. The basic elements in this modeling methodology are modularization, model encapsulation, hierarchical decomposition, parameterization and inheritance. Models have an internal structure of model components, like terminals, parameters and behavior descriptions. The model behav... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • PID autotuner design using machine learning

    Publication Year: 1992, Page(s):173 - 179
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A method using machine learning to automatically produce controller tuning algorithms is described. The method constitutes a decision tree which selects from a set of tuning rules the rule which is best able to improve controller characteristics. The decision tree is constructed using a training set of example systems. Evaluations of the resulting tuning algorithm are performed using a large indep... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computer-aided modeling, analysis, and design of discrete event systems using Petri nets

    Publication Year: 1992, Page(s):255 - 260
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    The use of Petri nets for computer-aided design and analysis of discrete-event systems (DES) on the discrete event control level is described. Several CAD packages devoted to different aspects of DES in different environments are described. They include a powerful and user-friendly Petri net graphic editor, a behavior analyzer based on reachability-graph generation or reduction, a performance eval... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Closed-loop convex analysis of performance limits for linear control systems

    Publication Year: 1992
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Closed-loop convex analysis and design, in which the linear controller design problem is reformulated as a convex optimization problem that may be more easily solved than the problems resulting from conventional formulations, are discussed. This reformulation synthesizes control laws that have high degree, but nevertheless can be implemented using digital signal processors. The solution is rarely ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.