State and fault estimation of singular delayed LPV systems via proportional-integral observer

In this paper, a singular LPV system with multiple time varying delays in state is considered. The system is subject to input disturbances and actuator faults. First, the considered system is transformed to polytopic representation and then a polytopic proportional-integral unknown input observer (P...

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Bibliographic Details
Published inConference on Control and Fault-Tolerant Systems (Print) pp. 381 - 386
Main Authors Hassanabadi, Amir Hossein, Shafiee, Masoud, Puig, Vicenc
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2016
Subjects
Actuators
Convergence
Delays
Estimation error
Mathematical model
Observers
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ISSN2162-1209
DOI10.1109/SYSTOL.2016.7739780

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Summary:In this paper, a singular LPV system with multiple time varying delays in state is considered. The system is subject to input disturbances and actuator faults. First, the considered system is transformed to polytopic representation and then a polytopic proportional-integral unknown input observer (PI-UIO) is designed for it. This observer can estimate both the system states and the actuator faults in the system. The conditions for disturbance decoupling and also the existence and convergence of the PI-UIO are combined and then obtained in a set of LMIs in the polytope vertices. Actuator fault diagnosis is achieved via the fault estimates provided by the observer. The applicability of the proposed scheme is illustrated via a numerical example.
ISSN:2162-1209
DOI:10.1109/SYSTOL.2016.7739780