Tracking control for induction motor using Takagi-Sugenou approach

This paper studies an observer based H_∞ tracking control problem for induction motor by using Takagi-Sugenou model. The proposed method can guarantee the stability and improve tracking performance. The gains of the controller and the observer are given in a single step formulated in LMIs condition. The Takagi-Sugenou fuzzy model is used to approximate the nonlinear system in the synchronous d-q frame rotating with field-oriented control strategy. A fuzzy controller is designed to reduce the tracking error where the inaccessible rotor flux is estimated by a T-S fuzzy observer. Simulation results are given to show the effectiveness of the proposed observer-based tracking controller.