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Control Theory and Applications, IEE Proceedings -

Issue 2 • Date Mar 1995

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Displaying Results 1 - 11 of 11
  • Guaranteed cost LQG control of uncertain linear systems

    Publication Year: 1995 , Page(s): 95 - 102
    Cited by:  Papers (15)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (472 KB)  

    The paper presents a Riccati equation approach to the output feedback quadratic stabilisation of an uncertain system. The uncertain systems under consideration depend on a norm-bounded time-varying matrix of uncertain parameters. A feature of the approach taken is that it involves the minimisation of a certain bound on an LQG cost function. The results were obtained by combining results on an opti... View full abstract»

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  • Partially asynchronous co-state prediction algorithm

    Publication Year: 1995 , Page(s): 88 - 94
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (388 KB)  

    A partially asynchronous co-state prediction algorithm for the solution of the optimal control problem of linear large-scale systems is presented. A detailed study of the convergence behaviour of the proposed algorithm is given, taking into consideration the effect of communication delay among the processors forming the overall system. The results of applying the new algorithm to simulation exampl... View full abstract»

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  • Multivariable adaptive control for a space station using genetic algorithms

    Publication Year: 1995 , Page(s): 81 - 87
    Cited by:  Papers (7)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (396 KB)  

    The paper presents a design method of multivariable adaptive digital tracking PID controllers using genetic algorithms (GA) and its application to the attitude control and momentum management (ACMM) system for a space station. The controller comprises two parts: (i) a fast online recursive identifier using the least squares method with variable forgetting factors to provide the updated dynamic par... View full abstract»

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  • Stability of time-delay singularly perturbed systems

    Publication Year: 1995 , Page(s): 111 - 113
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (200 KB)  

    The stability of a linear time-invariant singularly perturbed system with time delay in slow states is discussed. A delay-independent sufficient condition for the stability bound ε* is given, such that the stability of the full-order model can be inferred from the analysis of the corresponding reduced-order model in separate time scales. The perturbation on time delay is also considered. The ... View full abstract»

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  • Fuzzy logic control of an automotive suspension system

    Publication Year: 1995 , Page(s): 149 - 160
    Cited by:  Papers (13)  |  Patents (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (672 KB)  

    The aim of the work described in the paper is to illustrate the application of fuzzy logic techniques to the control of a continuously variable damping automotive suspension system. The study was analytical and involved the use of a multibody (MBS) model of a passenger car. The model included the dominant vehicle nonlinearities in the kinematic behaviour and the force characteristics as well as re... View full abstract»

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  • Perfect output control for nonsquare generalised state space systems

    Publication Year: 1995 , Page(s): 119 - 122
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (212 KB)  

    The problem of perfect output control, via proportional restricted state feedback, is studied for the case of nonsquare generalised state space systems. The necessary and sufficient conditions for the problem to have a solution are established. Furthermore, the necessary and sufficient conditions for the solution of the problem of command matching are derived, using proportional restricted state a... View full abstract»

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  • Multivariable system simplification using moment matching and optimisation

    Publication Year: 1995 , Page(s): 103 - 110
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (544 KB)  

    A generalised formulation of the moment matching problem, which encompasses previous formulations and is applicable to non-square continuous and discrete systems, is presented. The formulation entails points about which moments can be matched. These points can be specified either by trial and error or by means of optimisation, so that the reduced model has desirable properties such as stability an... View full abstract»

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  • Active suspensions: some background

    Publication Year: 1995 , Page(s): 123 - 128
    Cited by:  Papers (9)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (448 KB)  

    The paper is intended to serve as an introduction to a set of three specially selected papers on suspension control systems. In this spirit, the authors briefly review the area of active suspensions and provide some introductory background, history and facts that will enable the reader to place the selected papers in context. Although this is not a comprehensive review, the authors have elected to... View full abstract»

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  • Analysis, modelling-and control of an advanced automotive self-levelling suspension system

    Publication Year: 1995 , Page(s): 129 - 139
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (680 KB)  

    The paper is concerned with the analysis, modelling and control of a prototype self-levelling active suspension system for road vehicles. Motivation for the work is given by considering some of the fundamental performance limitations within which all traditional passive designs are constrained to operate. Self-levelling systems are presented as a viable engineering compromise from ideal “ful... View full abstract»

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  • Parameter estimation of state space models by recurrent neural networks

    Publication Year: 1995 , Page(s): 114 - 118
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (296 KB)  

    Four variants of recurrent neural networks (RNNs) are studied. The similarities and contradistinction of these formulations are brought out from the view point of their applicability to parameter estimation in dynamic systems. The trajectory matching algorithms are also given. A recursive information processing scheme within the structure of a Hopfield neural network for parameter estimation is pr... View full abstract»

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  • Performance enhancement of limited-bandwidth active automotive suspensions by road preview

    Publication Year: 1995 , Page(s): 140 - 148
    Cited by:  Papers (10)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (584 KB)  

    A refined approach for the implementation of preview control in discrete time based on methods from earlier work is given. This allows the use of multiple preview inputs and reduces the system order of a discrete-time preview system significantly with respect to former methods, while describing the dynamic system in an exact form and yielding an equivalent control law. This method is applied to a ... View full abstract»

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