PMSM矢量控制在雕铣机进给系统中的实现﹡

摘要

永磁同步交流伺服电机（PMSM）是数控雕铣机进给系统中的一个关键部件，其控制方法对伺服系统的性能起重要作用。建立了该类电机的数学模型并研究了矢量控制原理，并采用DSP控制器实现了伺服电机的电流、速度双闭环控制系统并测试了该控制系统下电机的转速、电流及转角。最后对比了运动控制仿真结果与实验结果，验证了该控制方法的可行性和准确性，为该类电机的控制以及在数控机床上的应用提供了理论依据。%As a key component of feed system of CNC engraving and milling machine, the performance of control method of the permanent magnet synchronous AC servo motor(PMSM) plays an important role in the servo system. The mathematical model of PMSM is established and the vector control principle is described in detail. The current and speed double closed loop control of the servo motor is realized by using the DSP controller. The motor speed, current and angle are tested in control system are tested. Finally, verify the feasibility and accuracy of this control method by contrasting the results of motion control simulation with results of experiment, and providing theoretical basis for the control of the motor and the application in the NC machine tool.