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    Optimal tuning rules for proportional-integral-derivative and fractional-order proportional-integral-derivative controllers for integral and unstable processes

    Access Status
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    Authors
    Padula, Fabrizio
    Visioli, A.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Padula, F. and Visioli, A. 2012. Optimal tuning rules for proportional-integral-derivative and fractional-order proportional-integral-derivative controllers for integral and unstable processes. IET Control Theory and Applications. 6 (6): pp. 776-786.
    Source Title
    IET Control Theory and Applications
    DOI
    10.1049/iet-cta.2011.0419
    ISSN
    1751-8644
    School
    Department of Mathematics and Statistics
    URI
    http://hdl.handle.net/20.500.11937/52260
    Collection
    • Curtin Research Publications
    Abstract

    A set of tuning rules for standard (integer-order) proportional-integral- derivative (PID) and fractional-order PID controllers for integral and unstable processes is presented in this study. Based on a simple model of the process, the tuning rules have been devised in order to minimise the integrated absolute error. Both set-point tracking and load disturbance rejection tasks are considered. The achieved performance indexes can also be used for the assessment of the controller performance. A remarkable feature of the optimisation procedure employed for integral processes is highlighted. The provided results allow the user to quantify, for a given process, the performance improvement that can be obtained by using the fractional controller instead of the integer one. © 2012 The Institution of Engineering and Technology.

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