基于MRAS和磁链补偿的无速度传感器永磁直线同步电机直接推力控制  

Speed Sensorless Direct Thrust Control of Permanent Magnet Linear Synchronous Motor Based on MRAS and Flux Compensation

作　　者：向凡 许鸣珠 XIANG Fan;XU Mingzhu(School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学机械工程学院

出　　处：《电机与控制应用》2019年第8期18-23,58,共7页Electric machines & control application

基　　金：国家自然科学基金面上项目(11972238)

摘　　要：永磁直线同步电机(PMLSM)直接推力控制系统中的传统机械传感器在恶劣工况下难以准确获取控制系统反馈信息。将模型参考自适应算法应用到PMLSM,设计了基于模型参考自适应系统(MRAS)的无速度传感器直接推力控制系统,依据辨识得到的磁链位置重新构建了一种磁链观测器,对磁链进行补偿,减小了直接推力控制推力响应的波动。通过仿真,证明了基于MRAS和磁链补偿的无速度传感器PMLSM直接推力控制系统能够准确地辨识初级的速度和位置信息,得到了较好的动静态性能。In the direct thrust control system of permanent magnet linear synchronous motor(PMLSM),it was difficult for traditional mechanical sensors to accurately obtain the feedback information of the control system under harsh conditions.The model reference adaptive algorithm was applied to PMLSM.A speed sensorless direct thrust control system based on model reference adaptive system(MRAS)was designed,and a flux linkage observer was reconstructed according to the identified flux position.The flux linkage was compensated to reduce the fluctuation of thrust response of direct thrust control.The simulation results showed that the sensorless PMLSM direct thrust control system based on MRAS and flux compensation could accurately identify the primary speed and position information,and obtain better dynamic and static performance.

关 键 词：永磁直线同步电机 无速度传感器控制 模型参考自适应系统 磁链补偿 直接推力控制 

分 类 号：TM341[电气工程—电机]