永磁直线同步电机矢量控制系统研究

利用永磁直线同步电动机在推力、速度、定位精度、效率等方面比直线感应电动机和直线脉冲电动机等具有更多的优点，从其d-q轴数学模型着手，导出推力与电机参数及电机电流的关系式，得到最佳恒定推力控制策略。该策略将电机的稳定控制引入到最大推力控制中，并根据电机实际位移量的变化，直接控制电机的电流，从而实现对直线永磁同步电机的位置和速度控制。建立了恒定推力输出的矢量系统，通过电机的速度响应实验验证系统的稳定性、可靠性和高精度。最后试验证明其响应速度快，超调量小，定位精度高。

Research on control strategy of the maximum thrust of permanent magnet linear synchronous motor

The control method of the electromagnetic force angle and the thrust is obtained by analyzing the characteristics of permanent magnet linear synchronous motors (PMLSM) with fraction slot and its d-q model. With real displacement, its velocity is under control by adjusting its current. Tests demonstrate that the response of the system is rapid and the overshoot is small. They also demonstrate that the PMLSM runs reliably and precisely.