A new Sliding Mode Control tuning approach for second-order inverse-response plus variable dead time processes

Duby Castellanos-Cárdenas, Fabio Castrillón, Rafael E. Vásquez, Norha L. Posada, Oscar Camacho

    Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

    Resumen

    This work addresses a new set of tuning rules for Sliding Mode Control (SMC) applied to second-order inverse-response plus variable dead time processes. Descriptions of the dynamics of inverse response systems and sliding-mode controllers are first provided. Then, we present the design process for the set of SMC tuning rules, using dimensional analysis, experimental design, optimization, and model reduction techniques for set-point tracking. The obtained expressions are simple, which eases the application of the proposed step-by-step systematic methodology. The performance and robustness of the proposed SMC tuning method are compared to other well-known controllers, and then applied to a Van de Vusse isothermal reactor, which is a complex nonlinear second-order inverse-response system that exhibits variable dead time. The performance achieved with the new SMC tuning method is good for set-point tracking, while exhibiting a good behavior for disturbance rejection, and can be applied considering a wide-range of parameters of the process’ transfer function.

    Idioma originalInglés
    Páginas (desde-hasta)77-88
    Número de páginas12
    PublicaciónJournal of Process Control
    Volumen115
    DOI
    EstadoPublicada - jul. 2022

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