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IMC based PID controller tuning of series cascade unstable systems
Manickam Chidambaram
Published in Elsevier B.V.
2016
Volume: 49
   
Issue: 1
Pages: 795 - 800
Abstract
A simple method of tuning series cascade systems for Integrating, Unstable First order plus time delay process is proposed. Here the PID controller is analyzed for series cascade process based on IMC method and H2 minimizat ion. Maclaurin series is used to approximate the controller expression as a PID controller. Improved closed loop performances are achieved with the proposed method when compared to the recently reported methods in the literature. Further, an analysis is carried out based on maximum sensitivity for arriving at systematic guidelines for selection of the closed loop tuning parameter which is essential for unstable systems. The robustness for uncertainty in the model parameters is studied and compared with that of the controllers reported by Lee et a l. (2002). © 2016 IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
About the journal
JournalData powered by TypesetIFAC-PapersOnLine
PublisherData powered by TypesetElsevier B.V.
ISSN24058963
Open AccessYes
Concepts (14)
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    Controllers
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    Electric control equipment
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    Proportional control systems
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    Robustness (control systems)
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    Time delay
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    CASCADE PROCESS
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    Closed-loop performance
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    CLOSED-LOOP TUNING
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    FIRST ORDER PLUS TIME DELAY
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    IMC-BASED PID CONTROLLERS
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    Maximum sensitivity
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    Pid controllers
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    UNSTABLE PROCESS
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    Three term control systems