IEE Proceedings D - Control Theory and Applications

Issue 6 • November 1981

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Displaying Results 1 - 7 of 7
  • Indirect identification and control of a laboratory system

    Publication Year: 1981, Page(s):253 - 262
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (987 KB)

    The paper describes the application of indirect identification methods to obtain a state-space representation of the open-loop dynamics of a nonlinear laboratory model turbogenerator, which is operated in closed loop. The model structure and selection of variables are determined on the basis of simulation studies and residual analysis, and a recursive instrumental variables technique is employed f... View full abstract»

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  • Adaptive kalman filter for control of systems with unknown disturbances

    Publication Year: 1981, Page(s):263 - 267
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (533 KB)

    A canonical industrial filtering situation is considered whereby state estimates are required for feedback control purposes and parameter estimates are required because of an unknown and varying output disturbance. It is shown that the order of the extended Kalman filter may be reduced considerably by careful modelling. The disturbance is modelled using a modification to a technique proposed by Pa... View full abstract»

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  • Dynamic stability evaluation for multimachine system: an efficient eigenvalue approach

    Publication Year: 1981, Page(s):268 - 274
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (749 KB)

    A new method is presented for evaluating the dynamic stability of a multimachine power system. The effect of large changes in the system parameters on the eigenpattern is calculated using new formulas for higher-order eigenvalue sensitivities. The new method requires only a small additional computational effort. View full abstract»

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  • How to obtain a simple inverse Z- transform of a rational function of Z

    Publication Year: 1981, Page(s):275 - 278
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (327 KB)

    In the case of multiple poles, the classical method of partial fraction expansion (PFE), so often used for the computation of the inverse Z-transform of a rational function, leads to cumbersome expressions for the obtained discrete-time sequences. Exploiting the degrees of freedom left in the PFE, it is possible to obtain time sequences of a simple form. It is shown that the problem thus stated is... View full abstract»

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  • Suboptimality introduced by discretisation in time-optimal control systems

    Publication Year: 1981, Page(s):279 - 282
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (439 KB)

    Both continuous and discrete methods can be used for time-optimal control and under certain conditions the discrete optimal control, which is simpler to calculate, can be shown to be a valid approximation. In the paper, the applicability of Pokoski's hypothesis, which places an upper bound on the amount of suboptimality introduced by discretisation, is investigated. View full abstract»

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  • Self-tuning control for systems employing feedforward

    Publication Year: 1981, Page(s):283 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (919 KB)

    The paper concerns itself with the application of self tuning to systems incorporating feedforward control. The self-tuning controller considered minimises a cost function incorporating system output, control input, disturbance input and set-point variations. Techniques are presented which allow desired steady state and dynamic performance to be achieved by automatic adjustment of the disturbance ... View full abstract»

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  • Self-tuning charge control scheme for domestic stored-energy heating systems

    Publication Year: 1981, Page(s):292 - 300
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1016 KB)

    The paper examines the problem of controlling domestic electric stored-energy heating systems and describes the development of a self-tuning control scheme which can adjust the off-peak charging of the store to minimise electrical energy consumption. The charging time is controlled by a store temperature-regulator which is designed by application of the well known self-tuning minimum-variance cont... View full abstract»

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Aims & Scope

Published from 1980-1993, IEE Proceedings D contained significant and original contributions on control theory and its applications. It was devoted to control systems in the broadest sense, covering new theoretical results and the applications of new and established control methods.

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