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Computer Aided Control System Design, 1999. Proceedings of the 1999 IEEE International Symposium on

Date 27-27 Aug. 1999

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Displaying Results 1 - 25 of 110
  • Proceedings of the 1999 IEEE International Symposium on Computer Aided Control System Design (Cat. No.99TH8404)

    Publication Year: 1999
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    Freely Available from IEEE
  • General Index

    Publication Year: 1999, Page(s):xx - xxxii
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    Freely Available from IEEE
  • Model reduction of complex systems in the linear-fractional framework

    Publication Year: 1999, Page(s):34 - 39
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    This paper discusses model reduction for systems in several different classes, in particular time-varying, multidimensional or uncertain systems, and nonlinear systems in the linear-fractional framework. We describe in detail the unifying viewpoint that this framework provides to all of these classes, and discuss the numerical methods used to construct reduced-order models. The methods used are ex... View full abstract»

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  • Redefining the process for development of embedded software

    Publication Year: 1999, Page(s):261 - 266
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The common hardware and software integration environment (CHaSI-E) is being developed in support of the Atmospheric Interceptor Technology program to enhance the engineer's ability in providing rapid development of flight software that is derived directly from the system simulation, but is customized to support the specific processor architecture definition. This tool essentially allows the algori... View full abstract»

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  • Symbolic computation in nonlinear control system modeling and analysis

    Publication Year: 1999, Page(s):309 - 314
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The paper discusses the use of symbolic computation for model formulation, model integration, model checking, and model analysis. The zero dynamics plays an important role in the areas of modeling, analysis, and control of linear and nonlinear systems. The zero dynamics gives additional insight in the structure of the model employed and is an aid in modifying a model to satisfy some needs of the m... View full abstract»

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  • The validation of model sets on the basis of closed-loop feedback system generated data

    Publication Year: 1999, Page(s):28 - 33
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Model validation provides a useful means of assessing the ability of a model to account for a specific experimental observation, and has application to modeling, identification and fault detection. In the robust control context this amounts to determining whether or not there exists an element of the model set that can account for the observed experimental datum. Efficient algorithms have been dev... View full abstract»

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  • Using the adaptive blockset for simulation and rapid prototyping

    Publication Year: 1999, Page(s):255 - 260
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The paper presents the design considerations and implementation aspects of the adaptive blockset for Simulink which has been developed in a prototype implementation. The basics of indirect adaptive controllers are summarized. The concept behind the adaptive blockset for Simulink is to bridge the gap between simulation and prototype controller implementation. This is done using the code generation ... View full abstract»

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  • Solution of unilateral and bilateral Diophantine equations using symbolic computation

    Publication Year: 1999, Page(s):303 - 308
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    The polynomial equation approach of Kucera (1979), for the solution of unilateral and bilateral Diophantine equations, is implemented in a symbolic computing system (MapleV) in this paper. Procedures were developed to solve unilateral and bilateral Diophantine equations. This algebraic implementation would have been extremely difficult to carry out in a strict numeric computing environment. The us... View full abstract»

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  • Two point boundary value and periodic eigenvalue problems

    Publication Year: 1999, Page(s):58 - 63
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    In this paper we link the discrete-time periodic eigenvalue problem with two point boundary value problems over the same interval. This gives a new formulation of periodic eigenvalue problems which also leads to a new and more economical scheme for computing periodic eigenvalues View full abstract»

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  • Software for modeling, analysis, and control design for multidimensional systems

    Publication Year: 1999, Page(s):24 - 27
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    In this paper we describe a Matlab Toolbox for modeling, analysis, and control design for multidimensional (MD) systems. This allows one to perform: MD system representations from first principles models; MD systems model reduction; MD systems manipulation, such as addition, multiplication, block transformations, etc.; spatially distributed controller design for MD systems; performance analysis of... View full abstract»

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  • Stability radii of polynomial matrices

    Publication Year: 1999, Page(s):81 - 84
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    We derive analytic expressions for the stability radius of polynomial matrices for all Holder norms and discuss numerical issues for computing these stability radii for the 1, 2 and ∞ norm View full abstract»

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  • On the compilation of statecharts models into target code for embedded systems

    Publication Year: 1999, Page(s):249 - 254
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Synchronous languages have proven to be very adequate for the modeling of embedded systems. Following the semantics of a synchronous language, a model starts execution from an initial state, receives signals from the environment and iterates until it reaches a stable state. Synchronous models thus react to a stimulus with a chain of actions, where the number of iteration steps in the chain reactio... View full abstract»

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  • Perspectives of CACSD: embedding the control system design process into a virtual engineering environment

    Publication Year: 1999, Page(s):297 - 302
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    The high computation and visualization power now available at the control engineer's desk opens the perspective of embedding CACSD Technology into a virtual engineering environment. This enables concurrent interaction of control engineering with multidisciplinary high-fidelity system dynamics modeling, and supports a fundamental change of the conventional control design tuning process in a computa... View full abstract»

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  • A qualitative analysis of automatic code generation tools for automotive powertrain applications

    Publication Year: 1999, Page(s):225 - 230
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    This paper reports the results of an evaluation of commercially available automatic code generation tools used for automotive powertrain software development. The evaluation was done in conjunction with a specific automotive customer using a customer supplied powertrain feature. This evaluation was not done from a modeling and simulation perspective, but rather from a software perspective. The aut... View full abstract»

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  • The photon diffusion equation: forward and inverse problems

    Publication Year: 1999, Page(s):52 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    We compute the solution to the photon diffusion equation using a state-space system. The state-space system under consideration is obtained by applying a FEM technique to the photon diffusion equation. Computing the photon density in the medium is commonly called in computational tomography, the forward problem. We investigate and present some preliminary results on the inverse problem. The invers... View full abstract»

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  • Computer-aided uncertainty modeling of nonlinear parameter-dependent systems. II. F-I6 example

    Publication Year: 1999, Page(s):16 - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Robust control system analysis and design is based on an uncertainty description, called a linear fractional transformation (LFT), which separates the uncertain (or varying) part of the system from the nominal system. System uncertainties to be represented in LFT form include both parametric and non-parametric uncertainties for many practical problems. LFT formulation for these “mixed uncert... View full abstract»

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  • Arithmetic for rectangular matrix pencils

    Publication Year: 1999, Page(s):75 - 80
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper is a generalization of the authors' (1998) previous study from square, regular n-by-n pencils to singular and rectangular m-by-n pencils. We define arithmetic-like operations on matrix pencils that are a natural extension of sums, products and quotients of real numbers. The algebra of linear transformations may be regarded as a special case of this pencil arithmetic. The language of lin... View full abstract»

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  • Component-node-network: three levels of optimized code generation with ASCET-SD

    Publication Year: 1999, Page(s):243 - 248
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    ETAS' CACSD tool ASCET-SD (Advanced Simulation and Control Engineering Tool) is specifically designed for control system design in automotive applications. It supports the entire design cycle from the early stages (i.e. graphical block diagrams) over rapid prototyping, target identical prototyping to eventually optimized code generation for various microcontroller targets. This paper focuses on co... View full abstract»

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  • Reliability-directed computer-aided design system

    Publication Year: 1999, Page(s):375 - 379
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A theoretical approach and applied techniques for designing analogues engineering devices and systems with due account of random variations in system parameters and reliability specifications are considered. For solving this problem a so-called operational/parametric approach is used. This approach is based on the computer-aided simulation of system capability and availability, parameter deviation... View full abstract»

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  • ICAD: an appropriate CACSD package for aerospace applications

    Publication Year: 1999, Page(s):416 - 421
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    An analysis and design method, referred to as ICAD, well suited for aerospace control design tasks is outlined. Embodied in a CACSD package, ICAD directly addresses the relevant issues of continuity, simplicity, transparency and flexibility in the modern aerospace MIMO context. Software requirements arising from ICAD are discussed, in particular, the model building and computational aspects. Some ... View full abstract»

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  • Recipe-driven batch processes: event handling in hybrid system simulation

    Publication Year: 1999, Page(s):138 - 143
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    This paper describes the integration of different simulation methods for batch processes under one single user interface and based upon one core model. We discuss two different simulation concepts with respect to event detection and handling of hybrid systems, especially of recipe-driven batch processes. The notation of event handling is central to both approaches. Examples are given to demonstrat... View full abstract»

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  • Using the World Wide Web for teaching control systems design

    Publication Year: 1999, Page(s):291 - 296
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The chemical engineering laboratories at the University of Tennessee at Chattanooga have been made available for students to use via the World Wide Web. Students can conduct lab experiments from remote sites. This paper describes the hardware and software that is used for this facility and discusses strengths and “opportunities for improvement” that have been observed in this developme... View full abstract»

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  • Towards a more efficient approach to automotive embedded control system development

    Publication Year: 1999, Page(s):219 - 224
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    With current and future demands on automotive embedded control systems for added functionality and decreased time-to-market, greater emphasis is being placed on engineering tools to facilitate electronic control unit (ECU) development. This paper describes the requirements of a tool set that will effectively meet these demands. Software tools that allow graphical specification of control systems a... View full abstract»

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  • DirectSD - a toolbox for direct design of SD systems

    Publication Year: 1999, Page(s):357 - 362
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A new MATLAB toolbox DirectSD for analysis and direct synthesis of sampled-data (SD) systems in continuous time is presented. The design methods used in the toolbox are based on a new theoretical base, the main part of which is the parametric transfer function concept, which makes it possible to investigate SD systems in continuous time in the frequency domain. The toolbox includes macros for anal... View full abstract»

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  • Computer aided design of failure detection and identification and adaptive reconfigurable control systems for aerospace applications

    Publication Year: 1999, Page(s):188 - 193
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    The paper describes a systematic computer-aided design procedure for failure detection and identification (FDI) and adaptive reconfigurable control (ARC) for aerospace applications. The overall approach is based on a decentralized FDI-ARC scheme integrating separate modules for sensor, control effector and engine FDI with that for structural damage FDI. One of the important issues in this context ... View full abstract»

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