基于滑模变结构MRAS的PMSM速度辨识  

Research of Speed Identification for PMSM Based on Sliding Mode Variable Structure MRAS

作　　者：刘军[1] 汪全虎 陈敏祥[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《轻工机械》2014年第5期47-50,56,共5页Light Industry Machinery

摘　　要：提出了一种永磁同步电机无速度传感器速度辨识的方法。在模型参考自适应的基础上,加入了滑模变结构控制,构成了滑模变结构的模型参考自适应速度辨识器。并针对滑模变结构控制特有的抖振引入了Sigmoid函数进行改善。在MATLAB/Simulink中对整个永磁同步电机无速度传感器矢量控制系统进行了仿真分析,验证了滑模变结构MRAS速度辨识器的可行性,发现其具有更好的鲁棒性和动态性能。This paper proposes a method of speed identification in the sensorless vector control of PMSM.The sliding mode variable structure MRAS speed observer was constituted of model reference adaptive system and sliding mode variable structure control.The sigmoid function was introduced to eliminate the common dithering of sliding mode control.The simulation of the sensorless vector control of PMSM in MATLAB/Simulink proves that the speed observer can work effectively and has stronger robustness and better dynamic performance.

关 键 词：永磁同步电机(PMSM) 无速度传感器 滑模变结构MRAS SIGMOID函数 

分 类 号：TM341[电气工程—电机]