Speed estimator of speed sensorless control for PMSM was completed based on MRAS, which could reduce cost and drive system' s reliability was enhanced. On this basis, sliding mode control theory was applied so that speed tracking control about PMSM drive system was researched by adoptting integral sliding surface and sliding equivalent control, which improved robustness and speedability of system. Simulation model of sensorless vector control drive system for PMSM was established and speed sliding mode controller was designed. The simulation results demonstrate feasibility and effectiveness of the method and satisfactory performance of drive system.%基于模型参考自适应系统(MRAS)方法,完成了永磁同步电机(PMSM)无传感器控制中的速度估计,节约了成本,并提高了驱动系统的可靠性.在此基础上应用滑模控制理论,采用积分滑模面及滑模等效控制,对PMSM驱动系统速度跟踪控制进行了研究,提高了系统的鲁棒性和快速性.建立了PMSM驱动无传感器矢量控制系统的仿真模型,设计了速度滑模控制器.仿真结果验证了该方法的有效性,系统具有较好的动、静态特性.
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