H_inf Control Based on LPV for Load Torque Compensation of PMSM

Abstract

This paper proposes H∞ control based on linear parameter varying (LPV) systems for load torque compensation of the permanent magnet synchronous motors (PMSMs). The proposed method consists of torque modulation, commutation scheme and LPV H∞ controller. The dynamics of PMSMs was represented as the LPV systems depend on varying parameters. By the LPV modeling, we designed H∞ controller. Stability is proven by Lyapunov theorem. Finally, simulations are performed to show that the proposed method has a good performance of load torque compensation.