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IEE Proceedings D - Control Theory and Applications

Issue 3 • Date May 1990

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Displaying Results 1 - 6 of 6
  • Improvement of helicopter handling qualities using H/sup infinity /-optimisation

    Publication Year: 1990, Page(s):115 - 129
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1460 KB)

    Presents the results of a study into the use of H/sup infinity /-optimisation for the design of robust feedback control laws for improving the handling qualities of high-performance helicopters. A low-speed controller was designed to give accurate control of pitch and roll attitude yaw rate and heave velocity for a typical combat helicopter. The design was based on a linearised model obtained from... View full abstract»

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  • Implementation of a transputer-based flight controller

    Publication Year: 1990, Page(s):130 - 136
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (679 KB)

    Increasingly, as flight-control laws become more complex and sample times shorten, implementation requirements are outstripping the capacity of general-purpose single-processor systems. This has prompted the investigation described in the paper of the feasibility of using a parallel-processing transputer-based network, programmed in occam, for the implementation of an aircraft-flight-control algor... View full abstract»

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  • Adaptive temperature control of industrial processes: a comparative study

    Publication Year: 1990, Page(s):137 - 144
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (924 KB)

    Three classes of automated tuning for PID controllers are discussed and compared. These are a Ziegler-Nichols-based autotuner, a waveform-analysis adaptive tuner and a least-squares identification-based self-tuner. The results of a program of experiments to evaluate the relative performance of the three approaches are presented, together with a discussion of their relative merits in the light of t... View full abstract»

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  • Modelling, design and control of a modern electropneumatic actuator

    Publication Year: 1990, Page(s):145 - 155
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (921 KB)

    Presents an analysis of a pneumatic actuator system with response characteristics that are much improved compared with those available from conventional spring-opposed-diaphragm units. The equations are developed which characterise the behaviour of the pneumatic actuator, and comparisons of experimental and simulated results show the accuracy of the model to be good. Linear approximate models of t... View full abstract»

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  • Impact of control system design on a flexible manufacturing system for colliery arches

    Publication Year: 1990, Page(s):157 - 164
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (787 KB)

    Describes the design of an advanced control system for a machine used in the flexible manufacture of colliery roadway supports. Computer-aided design techniques were used extensively in the development of the system. Simulation, in particular, was important for efficiently establishing appropriate control modes and strategies. The control problem is, in essence, a co-ordinated servo control proble... View full abstract»

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  • Self-tuning extremum control

    Publication Year: 1990, Page(s):165 - 175
    Cited by:  Papers (7)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1047 KB)

    Describes the use of self-tuning concepts in the classical problem of extremum control. In particular, the situation is considered whereby a recursive parameter estimator is used to determine online the parameters of a performance index. The estimates are then used to decide the directions and step lengths employed in an online extremum-seeking function. The paper considers a self-tuning extremum ... View full abstract»

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