Adaptive fuzzy tracking control design for permanent magnet synchronous motors with output constraint

In this paper, an adaptive fuzzy output feedback position tracking constraint control method is proposed for permanent magnet synchronous motors (PMSM) system. Fuzzy logic systems are used to approximate unknown nonlinearities. For the cases of the immeasurable states, a state observer is proposed to solve the immeasurable states problem. In the unified framework of adaptive backstepping control design and utilizing the barrier Lyapunov function method, an observer-based adaptive fuzzy output feedback tracking constraint control scheme is developed. The simulation results are given to illustrate the effectiveness of the proposed control method for the PMSM.