基于改进型滑模观测器的永磁同步电动机矢量控制  

Permanent magnet synchronous motor vector control based on improved sliding mode observer

作　　者：王恺成 杨明发[1] Wang Kaicheng;Yang Mingfa(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108)

机构地区：[1]福州大学电气工程与自动化学院

出　　处：《电气技术》2019年第10期29-34,79,共7页Electrical Engineering

摘　　要：针对传统滑模观测器在永磁同步电动机无位置传感器控制过程中出现的抖振问题,本文提出一种改进型滑模观测器。通过采用饱和函数、反电势卡尔曼滤波器来减弱抖振,引入优化的锁相环来提取电动机的转速与位置信息,提高估计精度;最后建立基于Matlab/Simulink的仿真系统模型来验证该方法。仿真结果表明,改进的滑模观测器保证了系统的鲁棒性,一定程度上实现了对抖振的抑制,改善了电动机的动态性能与估算精度。Aiming at the chattering problem of the traditional sliding mode observer in the position sensorless control of permanent magnet synchronous motor,an improved sliding mode observer is proposed.By using the saturation function and the back EMF Kalman filter to reduce the chattering,an optimized phase-locked loop is introduced to extract the motor speed and position information,and the estimation accuracy is improved.Finally,the Matlab/Simulink simulation system model is established to verify the proposed method.The simulation results show that the improved sliding mode observer ensures the robustness of the system,and the chattering is suppressed to some extent,which improves the dynamic performance of the motor and estimation accuracy.

关 键 词：无位置传感器 永磁同步电动机 滑模观测器 锁相环 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]