Observer based fault estimation and robust tolerant control for Takagi Sugeno systems: An LMI approach
In this paper, we consider the fault estimation and tolerant control problem for a class of nonlinear systems described by Takagi Sugeno (T S) fuzzy models. Based on the fuzzy proportional integral observer scheme, the state controller presented can compensate the system's actuator fault and track the corresponding reference faulty free model system. According to the Lyapunov stability theory, we propose the robust stability analysis of the closed loop systems. Some sufficient conditions for the existence of fault estimation observer as well as robust tolerant controller are obtained in terms of linear matrix inequalities (LMIs) Finally, a numerical example is given to demonstrate the effectiveness of our approach.
2016 35th Chinese Control Conference (CCC)