Abstract:

The problem of active fault tolerant H∞ control for a class of linear timedelay systems is dealt with by employing generalized internal model control architecture (GIMC). For the possible fault whose dynamic behavior can be described by an exosystem, an observerbased fault estimator is used to estimate the fault. Based on the fault estimation, the GIMC active fault tolerant control system can implement online fault accommodation, and its design approach is proposed. A delay dependent sufficient condition on the existence of such an active fault tolerant control system is derived by applying a bound real lemma for linear timedelay systems, and a brief design procedure is also provided. Finally, a numerical example is given to demonstrate the effectiveness of the proposed method.