Study on fault detection for networked control systems with stochastic time-delay

The problem of fault detection scheme for networked control systems with non-ideal QoS (such as network-induced delay, data dropout, error sequence) is addressed in this paper. By assuming integrated index η_k obeys a homogeneous Markovian chain, we develop an augmented Markov Jump Systems (MJSs) model. The observer-based fault detection filter problem is formulated as an H_∞ optimization problem. Using linear matrix inequality (LMIs) techniques , the solvable condition of this optimization problem is derived. Finally, the effectiveness of the proposed method is illustrated by a numerical example.