I. Introduction
Along with the development of permanent magnetic materials and control technology, permanent magnet synchronous motor (PMSM), with its following merits: high torque/inertia ratio, high power density, high efficiency, reliable and easy for maintenance, is widely used in CNC machine tools, industrial robots and so on. Therefore, the establishment of the simulation model of PMSM and its control system is of great significance to the verification of a variety of control algorithms and the optimization of entire control system. This thesis is based on the analysis of mathematical model of PMSM, using the modular thought, with the powerful simulation modeling capabilities of Matlab/Simulink, the entire PMSM control system as a whole will be divided into several independent functional modules: PMSM body module, inverter module and coordinate transformation module and SVPWM production module and so on. Combine these modules organically, and we could build the simulation model of PMSM control system. Through the simulation of a specific motor, we analysis a variety of simulation waveforms, provide an effective means for the analysis and design of the PMSM control system.