基于滑模观测器的永磁同步电机无传感器控制作者:白阿伟 姜春霞来源:《科技创新与应用》2019年第26期 摘; 要:在永磁同步电机无传感器控制时,采用基于滑模变结构的转子信息估算方法。在传统滑模观测器基础上,使用饱和函数代替了原始切换函数。为减小控制系统的抖振,转子位置和转速信息由锁相环系统提取。最后通过仿真实验分析了滑模观测器的稳定性,验证了控制策略的可行性。 关键词:滑模观测器;锁相环;抖振
中图分类号:TM341; ; ; ; ;文献标志码:A; ; ; ; ;文章编号:2095-2945(2019)26-0069-02
Abstract: In sensorless control of permanent magnet synchronous motor (PMSM), the rotor information estimation method based on sliding mode variable structure is adopted. Based on the traditional sliding mode observer, the original switching function is replaced by the saturation function. In order to reduce the chattering of the control system, the position and speed information of the rotor are extracted from the PLL system. Finally, the stability of the sliding mode observer is analyzed through simulation experiments, and the feasibility of the control strategy is verified.