Integrated fault detection in multiple switched systems

This paper addresses a new strategy for constructing switched systems. This approach will be used to set an integrated fault detection filter (FDF). The basic idea behind this approach is to switch multiple sub-models with weighting factors that reflect the effect of each local sub-model. The main contributions of this paper are summarized as follows: (1) set a multiple switching technique for describing the system dynamic behavior. (2) integrate residual generation with evaluation and threshold setting. (3) enhance the fault detectability for the switched systems by utilizing available information provided by each local sub-model. (4) relax the stability condition for the switched observers in terms of switched Lyapunov functions (SLF). The proposed approach will be illustrated by lateral vehicle dynamics as an example.