Sliding mode observers for T-S fuzzy systems with application to sensor fault estimation

摘要

In this paper, we consider the sensor fault detection and isolation problem for the nonlinear dynamic systems that can be represented in the form of Takagi-Sugeno (T-S) fuzzy models. We propose an extension of the step-by-step high order sliding mode observers to T-S fuzzy models. The finite time estimation of sensor faults is obtained using the super-twisting algorithm. The proposed algorithm is tested on an hydraulic system affected by sensor faults.