基于二阶滑模观测器的永磁同步电机无位置传感器控制  

PMSM sensorless control based on second-order sliding mode observer

作　　者：张晓光[1] 孙力[1] 陈小龙[1] 安群涛[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电力自动化设备》2013年第8期36-41,共6页Electric Power Automation Equipment

摘　　要：为了准确估计永磁同步电机的转子位置与速度,提出一种二阶滑模观测器。该观测器在传统线性滑模面基础上引入了混合非奇异终端滑模面,避免了常规滑模观测器由于低通滤波所产生的相位滞后问题,同时可以提高转子位置与速度的估算精度。为了保证观测器的稳定并抑制滑模固有的抖振现象,设计了滑模控制律。最后,采用具有锁相功能的转子位置与速度跟踪算法从观测的反电动势中解调出转子位置和速度信息。仿真和实验证明了所提观测器的正确性。A kind of second-order sliding mode observer is proposed to estimate the rotor position and speed of PMSM（Permanent Magnet Synchronous Motor）,which combines the linear sliding mode with the hybrid non-singular terminal sliding mode to avoid the phase lag caused by the low-pass filter in conventional sliding mode observer and to improve the precision of rotor position and speed estimation. The sliding mode control law is designed to restrain the inherent chattering and to guarantee the stability of observer. The tracking algorithm with phase-lock function is employed to demodulate rotor position and speed from the observed back electromotive force. Simulative and experimental results demonstrate the validity of the proposed observer.

关 键 词：二阶滑模观测器 滑模控制 锁相环 永磁同步电机 控制 

分 类 号：TM341[电气工程—电机]