改进内置式永磁同步电机的无位置控制方法  

Improved Position-Free Control Method of Built-in Permanent Magnet Synchronous Motor

作　　者：李红岩[1] 赵天玥 安平娟 王磊[1] 杨朝旭 王伟峰 LI Hongyan;ZHAO Tianyue;AN Pingjuan;WANG Lei;YANG Chaoxu;WANG Weifeng(School of Electrical and Control Engineering,Xi′an University of Science and Technology,Xi′an 710600,China)

机构地区：[1]西安科技大学电气与控制工程学院,西安710600

出　　处：《组合机床与自动化加工技术》2023年第10期120-123,128,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家重点研发计划项目(2021YFE0105000);国家自然科学基金项目(52074213);陕西省重点研发计划项目(2021SF-472);榆林市科技计划项目(CXY-2020-036)。

摘　　要：为了提高内置式永磁同步电机无位置控制下传统滑模观测器在中高速运行过程中的动态性能,提出了一套基于定子电阻辨识的超螺旋滑模观测器。针对滑模控制本身存在的抖振问题,在内置式永磁同步电机的模型下设计了超螺旋滑膜观测器,推导了新的切换函数引入到观测器中,能够进一步地削弱抖振,减小超调,提高了系统的抗干扰能力;为了提高电机在不同环境下的稳定性,在此基础上对电机定子电阻进行在线辨识,降低了在电机运行过程中定子电阻阻值随温度升高而发生变化所造成的精度误差。实验结果验证了该套无位置传感器系统能够减小抖振、提高控制精度,具有较好的稳定性和动态性能。In order to improve the dynamic performance of traditional sliding mode observer of built-in permanent magnet synchronous motor without position control in the process of medium and high speed operation,a set of super spiral sliding mode observer based on stator resistance identification is proposed.In order to solve the chattering problem of sliding mode control itself,a superhelical observer was designed based on the built-in permanent magnet synchronous motor model.A new switching function was derived and introduced into the observer,which can further weaken chattering,reduce overthrow and improve the anti-interference ability of the system.In order to improve the stability of the motor in different environments,on this basis,the on-line identification of the stator resistance of the motor is carried out to reduce the precision error caused by the change of the stator resistance value with the increase of temperature during the operation of the motor.Experimental results show that the sensorless system can reduce chattering and improve control accuracy,and has good stability and dynamic performance.

关 键 词：内置式永磁同步电机 超螺旋滑模观测器 切换函数 定子电阻辨识 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]