在分析无刷直流电机(BLDC)数学模型的基础上,提出了无刷直流电机系统仿真建模的新方法.在Matlab/Simulink中,建立独立的功能模块,如BLDC本体模块、电流滞环控制模块、速度控制模块等,再进行功能模块的有机整合,搭建无刷直流电机系统的仿真模型.为保证仿真快速性和有效性,模型采用分段线性法生成梯形波反电动势,系统采用双闭环控制:速度环采用PI控制,电流环采用滞环电流控制.仿真结果证明了该方法的有效性,同时也适用于验证其他控制算法的合理性,为实际电机控制系统的设计和调试提供了新的思路.-Based on the analysis of brushless DC motor (BLDC) mathematical model, proposed a new method of brushless DC motor system simulation modeling in Matlab/Simulink, the establishment of an independent functional modules, such as BLDC body module, a current hysteresis control module, speed control module, then the organic integration of functional modules, to build simulation models of brushless DC motor system in order to guarantee fast and effective simulation model using trapezoidal wave counter electromotive force generated piecewise linear method, the system uses double-loop control: speed loop using PI control, current loop hysteresis current control simulation results show the effectiveness of the method, but also applies to verify the reasonableness of the other control algorithms, providing a new actual motor control system design and commissioning. ideas.