Fault tolerant multicontrollers for nonlinear systems: A real validation on a chemical process

• Autorzy: Mejdi Sondess , Messaoud Anis , Ben Abdennour Ridha

Identyfikatory

DOI

10.34768/amcs-2020-0005

• Języki publikacji: EN

Abstrakty

EN

An active sensor fault tolerant controller for nonlinear systems represented by a decoupled multimodel is proposed. Active fault tolerant control requires accurate fault estimation. Thus, to estimate both state variables and sensor faults, a discrete unknown input multiobserver, based on an augmented state multimodel, is designed. The multiobserver gains are computed by solving linear matrix inequalities with equality constraints. A multicontrol strategy is proposed for the compensation of the sensor fault and recovering the desired performances. This strategy integrates a bank of controllers, corresponding to a set of partial models, to generate a set of control laws compensating the fault effect. Then, a switching strategy between the generated local control laws is established in order to apply the most suitable control law that tolerates the fault and maintains good closed loop performances. The effectiveness of the proposed strategy is proven through a numerical example and also through a real time application on a chemical reactor. The obtained results confirm satisfactory closed loop performance in terms of trajectory tracking and fault tolerance.

Słowa kluczowe

EN

multicontroller; experimental validation; transesterification reactor; discrete unknown input multiobserver; fault tolerant control; sensor fault estimation

PL

weryfikacja doświadczalna; sterowanie tolerujące uszkodzenia; błąd czujnika; estymacja błędu

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mathematics and Computer Science
• Rocznik: 2020
• Tom: Vol. 30, no. 1
• Strony: 61--74
• Opis fizyczny: Bibliogr. 38 poz., rys., wykr.

Twórcy

autor

Mejdi Sondess

• Laboratory of Numerical Control of Industrial Processes, University of Gabes, Omar Ibn Khattab St., 6029, Gabes, Tunisia

autor

Messaoud Anis

• Laboratory of Numerical Control of Industrial Processes, University of Gabes, Omar Ibn Khattab St., 6029, Gabes, Tunisia

autor

Ben Abdennour Ridha

• Laboratory of Numerical Control of Industrial Processes, University of Gabes, Omar Ibn Khattab St., 6029, Gabes, Tunisia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).