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.
作者
党存禄
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)
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)。
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
permanent magnet linear synchoronous motor(PMLSM)
sliding mode observe(SMO)
mover position estimation
mover position correction
作者简介
党存禄(1964-),男,本科,教授,研究方向电力电子与电力传动;陈文德(1996-),男,硕士研究生,研究方向为永磁直线同步电机无传感器技术。
