改进MRAS的永磁同步电机无速度传感器控制策略  

Speed Sensorless Control Strategy of Permanent Magnetsynchronous Motor Based on Improved MRAS

作　　者：吴伟 杜昭平[1] WU Wei;DU Zhaoping(School of Electronic Information,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212000,China)

机构地区：[1]江苏科技大学电子信息学院

出　　处：《微电机》2019年第12期53-58,共6页Micromotors

摘　　要：针对永磁同步电机传统的模型参考自适应观测器对转速和负载变化敏感等问题,本文提出了一种改进模型参考自适应系统的控制策略,以滑模速度控制器取代传统的PI速度控制器,以滑模变结构取代传统模型参考自适应系统中的PI环节,并用一种边界层可变的新型的饱和函数取代传统滑模变结构的符号函数。从仿真结果来看,该方法不但具有良好的动态性能而且具有较强的鲁棒性。The traditional model reference observer(Model reference adaptive system,MRAS)of permanent magnet synchronous motor(Permanent magnet synchronous motor,PMSM)is sensitive to the change of speed and load,and so on.In this paper,an improved control strategy of double sliding mode reference adaptive system was proposed,in which sliding mode velocity controller was used to replace the traditional PI speed controller and sliding mode variable structure was used to replace the PI link in the traditional model reference adaptive system.And used a new variable boundary layer,the saturation function of type M replaced the symbolic function of the traditional sliding mode with variable structure.The simulation results show that the proposed method not only has good dynamic performance,but also has strong robustness.

关 键 词：永磁同步电机 滑模变结构 模型参考自适应系统 新型饱和函数 

分 类 号：TM341[电气工程—电机] TM351