Design of a multivariable decoupling control system with IMC/PID controller

Angela Villafane, Luis Angel

    Research output: Chapter in Book/Report/Conference proceedingConference and proceedingspeer-review

    Abstract

    The interaction among variables is the main problem when controlling a multivariable system, since an input signal can affect several outputs and, in turn, an output can be affected by several input signals, which is aggravated as the number of input and output signals of the system to be controlled increases. The control of a direct decoupling approach based 3x3 multivariable system is presented in this paper. At first, the direct decoupling approach allowing to eliminate or minimize the interaction among the loops of the multivariable process and to obtain a set of decoupled simple input-simple output systems is presented. After that, Proportional-Integral-Derivative (PID) controllers are designed for the set of decoupled systems by using the Internal Model Control (IMC) control strategy, and the influence of the lambda parameter in each of the outputs is analyzed. The operation of the centralized controller is then compared with a decentralized controller in presence of external disturbances. Results show that the centralized controller performs better than the decentralized controller as lower error index values and output variations were obtained.

    Original languageEnglish
    Title of host publicationProceedings of the 2021 IEEE 5th Colombian Conference on Automatic Control, CCAC 2021
    EditorsDiana Marcela Ovalle Martinez, Luis Francisco Combita Alfonso
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages244-249
    Number of pages6
    ISBN (Electronic)9781665418836
    DOIs
    StatePublished - 2021
    Event5th IEEE Colombian Conference on Automatic Control, CCAC 2021 - Ibague, Colombia
    Duration: 19 Oct 202122 Oct 2021

    Publication series

    NameProceedings of the 2021 IEEE 5th Colombian Conference on Automatic Control, CCAC 2021

    Conference

    Conference5th IEEE Colombian Conference on Automatic Control, CCAC 2021
    Country/TerritoryColombia
    CityIbague
    Period19/10/2122/10/21

    Bibliographical note

    Publisher Copyright:
    © 2021 IEEE.

    Keywords

    • Centralized control
    • Control
    • Decentralized control
    • Decouple
    • IMC
    • Multivariable system
    • PID

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