基于磁链观测器的PMSM无感复合滑模控制策略研究

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中图分类号：TM341 文献标志码：A 文章编号：1007-449X（2025）11-0035-09

Research on composite sliding mode control strategy for sensorless PMSM control based on flux linkage observer

LI Bo¹， ZHANG Dongdong1， KONG Youjun²， WANG Zhisong³ （1.SchoolofElectrical Engineering，DalianUniversityof Technology，Dalian116O24，China；2.StateGridIntegratedEnergy Service Group Co.，Ltd.，Beijing 100053，China;3.Liaoning SG Automotive Group Co.，Ltd.，Dandong 118004，China）

Abstract：To address the limitations of traditional back-EMF-based algorithms in sensorlesscontrol of permanent magnet synchronous motors （PMSM）and the dificulty in balancing overshoot and response speed in the velocity loop PI controller，as well as its weak disturbance rejection capability，a sensorless control method combining a nonlinear flux observer and a composite sliding mode speed controller was proposed， in which a nonlinear flux observer was utilized to accurately estimate the rotor angle and motor speed.A novel adaptive fast sliding mode controllr was then designed to achieve optimal matching between the improved speed loop and sensorless observation，thereby enhancing system response speed and effectively suppressing overshoot.Additionally，to improve the disturbance rejection capability of traditional sensorless control，a sliding mode disturbance observer was introduced to enhance system robustness. Finally， simulations and experiments verify effectiveness and superiority of the proposed method. The results demonstrate that the proposed approach outperforms traditional control strategies in terms of dynamicresponse，overshoot suppression，and disturbance rejection performance.

Keywords： permanent magnet synchronous motor; sensorless control； nonlinear flux observer； slidingmode controller；composite control；anti-disturbance performance

0引言

永磁同步电机（permanent magnet synchronousmotor，PMSM）以其结构简单、体积小、质量轻、损耗小及效率高等优点，被广泛应用于新能源汽车、无人机和机器人控制等领域[1]。（剩余12142字）