Robust Velocity Control System Of Linear Permanent Synchronous Motor

Along with power electronics, micro-processor, micro-electronics, rare earth permanent magnetic materials and modern control theory, permanent magnetic synchronous motor (PMSM) has been widely in motion control of medium and low capacity both in industry and daily living. Besides, it seems to expect trend its taking place of DC motor and asynchronous motor for velocity control gradually. Meanwhile, conventional lathe has intermediate conversion segments transporting rotating motor into linear motor, which confine precision. Linear permanent magnetic synchronous motor (LPMSM) has ability to move linearly without intermediate conversion segments and conquers the inherent defect.In this paper, the research object is the velocity controller of the linear permanent magnetic motor. First design considerations and work principle are introduced, and motion equations are listed. Then, space vector modulation is presented and robust velocity controller is designed based on theory of robusticity. After that, the system is simulated on the platform of MATLAB. Finally, hardware based on DSP TMS240LF2407 and software are designed, and some experiment are complete.