Active-damping Speed Tracking Technique for Permanent Magnet Synchronous Motors with Transient Performance Boosting Mechanism

Abstract

This paper exhibits a novel solution to the speed tracking problem of permanent magnet synchronous motors (PMSMs) subject to parameter and load uncertainties. The resultant cascade structured solution is designed to give the speed tracking capability to the closed-loop system, which depends on only the nominal PMSM parameter information. This study provides two novel contributions: a) a variable performance target system describing the desired perfect tracking nature with boosting feedback gains, and b) a robust control law forcing the target tracking system to be invariant through the utilization of active-damping pole-zero cancellation and disturbance observer techniques. The prototype 1-kW PMSM experimental set confirms the practical advantages of the proposed system compared to the recent auto-tuning controller.