Research on Servo System for Permanent Magnet Synchronous Motor

Research on Servo System for Permanent Magnet Synchronous Motor
　　Servo technology is an important branch of automation and industry production. With the amazing development of power electronics technique, microelectronics technique, sensor technique, and especially the successful application of advanced control theories, AC servo system has achieved the great progress. Due to its high efficiency, high torque current ratio and strong magnets low inertia, Permanent Magnet Synchronous Motor (PMSM) is the most adaptive executing machine for AC servo system. In this technical background, an AC speed servo system which adopts Permanent Magnet Synchronous Motor and TMS320F2812 DSP of TI as controller is researched.Firstly, this thesis summarizes and analyzes the evolution, the status quo, the prospect of AC servo system.
　　Afterwards the mathematic model of PMSM and the vector control theory based on Space Vector Pulse strong magnets Width Modulation (SVPWM) of AC speed servo system is analyzed. And finally the thesis introduces the software and the hardware design scheme of AC speed servo system, which adopts PMSM.The main loop circuit, the micro-controller, the sampling circuit, and the strong magnets hardware protect circuit are introduced in hardware design. In software design, the thesis expounds the idea of program design, it also introduces main program , interrupt program and sub-program with given function. The sub-programs include SVPWM sub-program, current sampling sub-program, position and speed measurement sub-program.Finally, the system is simulated in Matlab/Simulink. The simulating results indicate that the system possesses excellent dynamic and static performance, meeting the requirement of servo system.