Fault estimation for descriptor linear systems based on the generalised dynamic observer

Gloria Osorio-Gordillo, Carlos Astorga-Zaragoza, Abraham Pérez Estrada, Rodolfo Vargas-Méndez, Mohamed Darouach and Latifa Boutat-Baddas

International Journal of Systems Science, 2018, vol. 49, issue 11, 2398-2409

Abstract: An observer-based method for actuator fault estimation for descriptor systems is presented. An innovative generalised dynamic observer for descriptor systems is synthesised to perform a convergent estimation of actuator faults. The main advantage of this observer is that it can be configured as a simple proportional observer or a proportional-integral observer, depending on the design specifications. An algorithm is provided to compute the observer gains, which are deduced from the stability analysis. Actuator faults occurring in a heat exchanger modelled in descriptor form are estimated in order to evaluate the capabilities of the observer.

Date: 2018
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DOI: 10.1080/00207721.2018.1503357

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