Sensor fault detection for switched systems using interval observer with L∞ performance

This paper deals with sensor fault detection (FD) for discrete-time switched systems subject to bounded disturbances. A novel approach is investigated construct residual framers using interval observer L∞ performance. The proposed technique used provide more degrees of design freedom and obtain accurate FD results. conditions the are given in terms Linear Matrix Inequalities (LMIs) adopting firstly a common quadratic Lyapunov function, under an arbitrary switching signal secondly multiple functions, Average Dwell Time (ADT) signal. Furthermore, decision based on intervals generated by observer. effectiveness highlighted through simulation results academic example.