IEE Proceedings - Control Theory and Applications

Issue 5 • Sep 1996

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Displaying Results 1 - 11 of 11
  • Frequency domain design methodology for uncertain cascaded multiple-loop systems with plant modification

    Publication Year: 1996, Page(s):409 - 416
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (576 KB)

    Since the internal signal level increases after using a plant modification loop, Horowitz and Wang (1979, 1988) proposed a quantitative synthesis feedback design method using the bandwidth propagation effect to take care of the internal signal level. The bandwidth increase phenomenon makes it difficult to maintain internal signal level reasonably. Moreover, the noise components are most important ... View full abstract»

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  • Modelling and controlling one-degree-of-freedom impacts under elastic/plastic deformations

    Publication Year: 1996, Page(s):470 - 476
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (588 KB)

    The paper extends a control structure proposed previously to control one-degree-of-freedom impacts between two bodies, possibly subject to elastic/plastic deformations. First, basic equations describing the motion of the bodies involved in the collision are derived, both for a state of noncontact and for a state of contact, taking into account the possible permanent deformations that can occur if ... View full abstract»

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  • Graphical method of prediction of limit cycle for multivariable nonlinear systems

    Publication Year: 1996, Page(s):423 - 428
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    The paper examines the development of a graphical technique, leading to the use of computer graphics, for systematic analysis of limit cycles in multivariable nonlinear systems. The graphical approach provides an explicit and novel insight into the problem. The technique so developed is illustrated through examples. Its accuracy has been substantiated by comparing with the results from digital sim... View full abstract»

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  • Application of a full-order extended Luenberger observer for a position sensorless operation of a switched reluctance motor drive

    Publication Year: 1996, Page(s):401 - 408
    Cited by:  Papers (26)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (708 KB)

    Switched reluctance motors (SRMs) are rapidly becoming more popular in industrial applications where variable speed is required because of their simple construction, ease of maintenance, low cost and high efficiency. However, the operation of the SRM is heavily dependent upon precise information about rotor position, measurement of which may be very expensive or prohibited because of the nature of... View full abstract»

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  • Guaranteeing feasibility in constrained stable generalised predictive control

    Publication Year: 1996, Page(s):463 - 469
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (600 KB)

    Input constraints present a major difficulty in the design of stable predictive controllers. A convenient way to guarantee stability is to ensure short-term feasibility, that is to ensure the existence of a set of future controls which are within input constraints and meet suitable terminal constraints. Earlier algorithms use terminal constraints which depend on the setpoint and hence short-term f... View full abstract»

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  • Reliable online adaptation of models with variable time delays

    Publication Year: 1996, Page(s):417 - 422
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (520 KB)

    A new technique is presented for online adaptation of model parameters and time delays. The general case of continuous-time nonlinear models is considered, and the time delays are estimated to a fraction of the sampling period. The technique has the advantage that it requires user specification of only one parameter that determines the covered range of variability in the model parameters and time ... View full abstract»

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  • Note on reachability indices of augmented systems

    Publication Year: 1996, Page(s):477 - 479
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (228 KB)

    The paper shows some properties of the reachability/observability indices of linear time-invariant systems. Specifically, we show that there is a close connection between such indices of a system and those of the augmented system for it View full abstract»

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  • PID tuning for integrating and unstable processes

    Publication Year: 1996, Page(s):429 - 435
    Cited by:  Papers (24)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (552 KB)

    A systematic PI and PID tuning method is developed for integrating and unstable processes. The method, based on a maximum peak-resonance specification, leads to simple tuning parameter expressions and is graphically supported by the Nichols chart. The common characteristic of integrating and unstable processes is their open-loop frequency response, with the controller in cascade and has a phase ma... View full abstract»

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  • Delays versus performance of visually guided systems

    Publication Year: 1996, Page(s):436 - 447
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1396 KB)

    The paper presents an overview of dynamic systems with inherent delays in both feedforward and feedback paths and how the performance of such systems can be affected by such delays. The authors concentrate on visually guided systems, where the behaviour of the system is largely dependent on the results of the vision sensors, with particular reference to active robot heads (real-time gaze control).... View full abstract»

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  • Robust indirect adaptive control of the electrohydraulic velocity control systems

    Publication Year: 1996, Page(s):448 - 454
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (624 KB)

    A robust version of an indirect adaptive control scheme with self-excitation capability to the problem of controlling velocity of the electrohydraulic servosystems subject to unmodelled dynamics and load disturbances is proposed. The scheme contains an effective gradient least squares estimator using a dead zone technique and a certainty equivalence based adaptive controller. A design procedure fo... View full abstract»

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  • Time-varying sliding modes for second-order systems

    Publication Year: 1996, Page(s):455 - 462
    Cited by:  Papers (37)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (632 KB)

    Three types of optimal, continuously time-varying sliding mode for robust control of second-order uncertain dynamic systems subject to input constraint are presented. Two of the modes incorporate straight sliding lines, and the third uses the so-called terminal slider, that is a curve that guarantees system error convergence to zero in finite time. At first, all three lines adapt themselves to the... View full abstract»

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Aims & Scope

Published from 1994-2006, IEE Proceedings - Control Theory and Applications 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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