Fault Detection for Switched Systems Based on A Deterministic Method

This paper addresses fault detection (FD) issues for switched systems. The basic idea behind the proposed method is to estimate the disturbances and then use it in the evaluation function. The main contributions of this paper are summarized as follows: (1) develop a deterministic method for FD. (2) Improve the fault detection performance. (3) Enhance the fault detectability for the switched systems by utilizing the available information provided by each local sub-model in the residual generation, evaluation and threshold computation. The system under consideration in this paper is linear discrete-time switched systems. A switched residual signal will be generated based on the Parity Space approach. The proposed method will be illustrated by an example.