Interval Observer Design for Actuator Fault Estimation of Linear Parameter-Varying Systems

Abstract : This work is devoted to fault estimation of discrete-time Linear Parameter-Varying (LPV) systems subject to actuator additive faults and external disturbances. Under the assumption that the measurement noises and the disturbances are unknown but bounded, an interval observer is designed, based on decoupling the fault effect, to compute a lower and upper bounds for the unmeasured state and the faults. Stability conditions are expressed in terms of matrices inequalities. A case study is used to illustrate the effectiveness of the proposed approach.
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Rihab Lamouchi, Tarek Raissi, Messaoud Amairi, Mohamed Aoun. Interval Observer Design for Actuator Fault Estimation of Linear Parameter-Varying Systems. 10th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes SAFEPROCESS, Aug 2018, Warsaw, Poland. pp.1199 - 1204, ⟨10.1016/j.ifacol.2018.09.699⟩. ⟨hal-02470462⟩

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