Interval estimation methods of fault estimation for discrete-time switched systems

This paper investigates the fault estimation problem for discrete-time switched systems. Firstly, sensor is regarded as an augmented state, and then original system converted into a singular system. After that, based on obtained system, robust state observer designed using $ L_{\infty} technique. Given above observer, interval zonotope method established to complete estimation. Finally, circuit simulated illustrate efficiency of proposed method.