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On-line relay test for automatic tuning of PI controllers for stable processes

Mehta, Utkal V. and Majhi, S. (2012) On-line relay test for automatic tuning of PI controllers for stable processes. Transactions of the Institute of Measurement and Control, 34 (7). pp. 903-913. ISSN 0142-3312

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    Abstract

    The applicability of the basic relay tuning method is extended by a robust on-line method to tune proportional–integral controllers without breaking the closed-loop control. A relay is connected in parallel to the controller to induce self-oscillation and then simple measurements are made only on the half period of limit cycle output to obtain a first-order plus dead time model of the process dynamics. A non-iterative optimum tuning formulae is developed in order to reduce the control signal variations. The simulation and experimental studies are presented to validate the design method.

    Item Type: Journal Article
    Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > Robotics and Automation
    Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
    Depositing User: Utkal Mehta
    Date Deposited: 02 Sep 2013 15:50
    Last Modified: 14 Oct 2013 14:51
    URI: http://repository.usp.ac.fj/id/eprint/6478
    UNSPECIFIED

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