Nonlinear optimal control for the quadruple water tank system

G. Rigatos, G. Cuccurullo, P. Siano, K. Busawon, Masouda Abbaszadeh

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

    Abstract

    A nonlinear optimal control approach is developed for the quadruple water tank system. Approximate linearization around a temporary operating point is applied to the nonlinear dynamic model of the four water tanks which are fed by two pumps. The linearization makes use of Taylor series expansion and of the calculation of the system's Jacobian matrices. For the approximately linearized model of the four water-tank system an H-infinity feedback controller is designed. This controller stands for the solution of the nonlinear optimal control problem for the system under model uncertainty and external perturbations. For the computation of the controller's feedback gain an algebraic Riccati equation is iteratively solved at each time-step the control method. The global asymptotic stability properties of the control method are proven through Lyapunov analysis.

    Original languageEnglish
    Title of host publicationInternational Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2019
    EditorsTheodore E. Simos, Theodore E. Simos, Theodore E. Simos, Theodore E. Simos, Theodore E. Simos, Charalambos Tsitouras
    PublisherAmerican Institute of Physics
    ISBN (Electronic)9780735440258
    DOIs
    Publication statusPublished - 24 Nov 2020
    EventInternational Conference on Numerical Analysis and Applied Mathematics 2019, ICNAAM 2019 - Rhodes, Greece
    Duration: 23 Sept 201928 Sept 2019

    Publication series

    NameAIP Conference Proceedings
    Volume2293
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Conference

    ConferenceInternational Conference on Numerical Analysis and Applied Mathematics 2019, ICNAAM 2019
    Country/TerritoryGreece
    CityRhodes
    Period23/09/1928/09/19

    Keywords

    • Approximate linearization
    • Global asymptotic stability
    • H-infinity control
    • Jacobian matrices
    • Lyapunov analysis
    • Nonlinear optimal control
    • Quadruple water tank system
    • Taylor series expansion

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