两相圆筒型永磁同步直线电机无传感算法  

Research on Sensorless Algorithm of Two-Phase Tubular Permanent Magnet Synchronous Linear Motor

作　　者：张春雷[1,2] 张辉[1,2] 叶佩青[1,2] 张鲁宏[1,2] Zhang Chunlei;Zhang Hui;Ye Peiqing;Zhang Luhong(Department of Mechanical Engineering Tsinghua University ,Beijing 100084 China;Beijing Key Laboratory of Precision/Ultra-Precision Manufacturing Equipments and Control Tsinghua University, Beijing 100084 China)

机构地区：[1]清华大学机械工程系,北京100084 [2]清华大学精密超精密制造设备与控制北京市重点实验室,北京100084

出　　处：《电工技术学报》2019年第23期4901-4908,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51875312)

摘　　要：受定子绕组磁动势谐波分量与纵向端部效应的影响,两相圆筒型永磁同步直线电机的实际相电感与理想相电感之间存在差异,导致传统基于高频方波注入的无传感算法不再适用。该文在直线电机动子与定子绕组完全耦合的情况下,通过有限元的方法对两相圆筒型永磁同步直线电机电感特性进行分析,并从实际相电感出发,求解得到静止轴高频方波注入的电机模型。通过拓展卡尔曼滤波算法提取估计的速度和位置信息,在不降低系统带宽的条件下实现了动子位置实时检测。最后通过实验验证了所提出的改进无传感算法的有效性。Due to the existence of longitudinal end effect and magnetomotive force harmonics, the inductance of two-phase tubular permanent magnet synchronous linear motor(TPMSLM) isn’t ideal. So the traditional sensorless algorithm based on the high-frequency voltage injection doesn’t work. To solve the problem, the inductance of two-phase TPMSLM was studied by the finite element method in the condition that the mover and stator windings were fully coupled. Then the high-frequency voltage model of two-phase TPMSLM in the stationary reference frame was derived from the actual inductance. The estimated position was extracted by the extended Kalman filter(EKF). As a result, the sensorless control using the proposed method provides an enhanced dynamics. At last, the proposed algorithm was verified by experiment.

关 键 词：直线电机 电感 无传感 高频注入 卡尔曼滤波 

分 类 号：TM351[电气工程—电机] TM359.4