Integrated sensor fault estimation and control for continuous-time switched systems: A new separation principle
Ayyoub Ait Ladel1, Abdellah Benzaouia2, Rachid Outbib3
1LAEPT, Physics Department, Faculty of Sciences Semlalia, Cadi Ayyad University, P.B.2390, Marrakech, Morocco; LIS Laboratory (UMR CNRS 7020), Aix-Marseille University, 13397 Marseille, France.
Abstract:
In this paper, we address the state/fault estimation and observer-based control issues for switched systems with sensor faults. The main objective is to estimate sensor faults and compensate for their effects on the system state estimation, and then stabilize the switched system by the estimated state feedback. Applying the mode-dependent average dwell time (MDADT) concept and the Lyapunov stability theory, a new separation principle is developed, which allows formalizing the observer-based controller design in the form of linear matrix inequalities (LMI) instead of bilinear ones. Finally, a highly manoeuvrable aircraft technology (HiMAT) example, a DC-DC boost converter example, and a numerical example are investigated to show the practicability and efficiency of the obtained results.
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