基于新型UDE的无速度传感器PMSM滑模控制  

Sensorless PMSM Sliding Mode Control Based on New UDE

作　　者：卢军[1] 阴建强 LU Jun;YIN Jian-qiang(Changsha Vocational and Technical College of Civil Affairs,Changsha 410004,China;Zhengzhou Electronic Information Secondary Professional School,Zhenzhou 450100,China)

机构地区：[1]长沙民政职业技术学院,长沙410004 [2]郑州电子信息中等专业学校,郑州450100

出　　处：《组合机床与自动化加工技术》2020年第8期126-129,137,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：湖南省教育科学“十二五”规划课题(XJK015BZY064)。

摘　　要：为了改进应用滑模观测器(SMO)的无速度传感器永磁同步电机(PMSM)的控制性能,以减少滑模观测器抖振为目标,采用新型切换函数代替传统符号函数;应用李雅普诺夫(Lyapunov)稳定性理论,对改进滑模观测器增益进行选取;针对负载突变或受到一定程度干扰时造成电机鲁棒性下降问题,提出一种基于不确定干扰估计器(UDE)的转速控制策略,以增强对内部参数变化和外部扭矩干扰的抗干扰能力。最后通过仿真和实验分析文中所提方案可以准确估算电机转速,抖振现象得到抑制,面对扰动,电机转速控制系统抗干扰能力较强。In order to improve the control performance of speed sensorless permanent magnet synchronous motor(PMSM)using sliding mode observer(SMO)and reduce the chattering of the sliding mode observer,a new switching function is used instead of the traditional symbolic function,and Lyapunov stability theory is used to select the gain of the improved sliding mode observer.A speed control strategy based on uncertain disturbance estimator(UDE)is proposed to enhance the anti-disturbance ability against internal parameter changes and external torque disturbances.Finally,through simulation and experimental analysis,the proposed scheme can accurately estimate the motor speed,and the chattering phenomenon can be suppressed.In the face of disturbance,the anti-interference ability of the motor speed control system is strong.

关 键 词：滑模观测器 永磁同步电机 新型切换函数 不确定干扰估计器 

分 类 号：TH16[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]