LPV H∞ Control for Load Torque Compensation of Permanent Magnet Synchronous Motors

Abstract

This paper proposes H_infinity control based on linear parameter varying(LPV) systems for load torque compensation of the permanent magnet synchronous motors(PMSMs). The method of proposed controller has torque modulation, commutation scheme and LPV H_infinity controller. The dynamics of PMSMs is represented as the LPV system. Then, we designed H_infinity controller for the LPV system. The closed-loop stability is proven by Lyapunov theorem. Finally, simulations and experiment are carried out to validate that the proposed method has a good performance of load torque compensation.