关键词: 永磁同步电动机, 模型参考自适应控制, 速度控制, 李雅普诺夫函数

Abstract: Aiming at the problems of poor speed tracking performance and weak disturbance rejection in the finite control set model predictive current control system for permanent magnet synchronous motors, a novel model reference adaptive control scheme is designed. The scheme incorporates two core control terms in its control law, an adaptive compensation control term and a stabilizing feedback control term. The adaptive term compensates for system uncertainties and external disturbances,while the stabilizing feedback term suppresses error dynamics through an asymptotic stabilization mechanism. The asymptotic stability of the system is rigorously verified using the Lyapunov function based adaptive control law. Simulation results demonstrate that the proposed control scheme ensures rapid exponential convergence of the speed error trajectory to the reference model trajectory under parameter uncertainties and load disturbances,thereby significantly improving the control system performance.

Key words: permanent magnet synchronous motor,model reference adaptive control,speed control,Lyapunov function