PMLSM动子位置估算与校正策略研究  

Research on Position Estimation and Correction Strategy of PMLSM Mover

作　　者：党存禄[1,2,3] 陈文德 DANG Cunlu;CHEN Wende(College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Gansu Province Advanced Control for Industrial Processes,Lanzhou University of Technology,Lanzhou 730050,China;National Experimental Teaching Demonstration Center of Electrical and Control Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省工业过程先进控制重点实验室,甘肃兰州730050 [3]兰州理工大学电气与控制工程国家级实验教学示范中心,甘肃兰州730050

出　　处：《电机与控制应用》2021年第10期14-19,共6页Electric machines & control application

基　　金：甘肃省重点研发计划项目(20YF8GA055)。

摘　　要：由于无传感器技术无法直接得到永磁直线同步电机(PMLSM)动子绝对位置,目前的研究中主要是通过速度积分估算动子位置。但是速度是由无传感器技术估算的,与实际速度之间仍存在微小误差,随着电机连续运动,误差量不断积累,最终可能会导致估算位置与实际位置之间的误差发散,甚至可能会使得基于无传感器控制的位置伺服系统崩溃。因此,提出一种全新的低成本、高精度位置校正策略,并进行了仿真验证,仿真结果表明该策略提高了位置估算结果的精度,并且消除了由偏差累积而导致无传感器位置伺服系统崩溃的风险。The sensorless technology cannot directly obtain the absolute position of the permanent magnet linear synchronous motor(PMLSM)mover,and the mover position is estimated by integrating the speed.However,the speed is estimated by sensorless technology,and there is still a slight error between the actual speed.With the continuous movement of the motor,the accumulated deviation eventually causes the deviation between the estimated position and the actual position to diverge,or even make the position servo system based on sensorless control collapse.A new low-cost,high-precision position correction strategy is proposed,and the simulation verification is conducted.The simulation results show that this strategy improves the accuracy of the position estimation results and eliminates the risk of sensorless position servo system breakdown due to accumulated deviations.

关 键 词：永磁直线同步电机 滑模观测器 动子位置估算 动子位置校正 

分 类 号：TM351[电气工程—电机]