摘要
通过分析无刷直流电动机数学模型,利用Matlab/Simulink对无刷直流电机无位置传感器控制系统进行了建模和仿真。分别用Simulink库中自带的电机模型,反电动势过零点检测法、速度PI控制和电流滞环PWM控制方式对系统仿真,使系统更直观、简化,更加贴近实际控制系统,为无刷直流电机无位置传感控制系统的设计与调试提供了新的方法。仿真结果得到的三相行电流波形和反电动势波形与理论分析得到的波形一致,验证了该无位置传感器控制系统的正确性。
Through the analysis of the mathematical model of brushless dc motor, using Matlab/Simulink for brushless dc motor without position sensor control system modeling and simulation. Using Simulink library respectively with motor model, counter electromotive force zero method, speed PI control and current hysteresis PWM control mode of system simulation, and makes the system more intuitive, simplified, more close to the actual control system for brushless de motor without position sensor control system design and debugging provides a new method. Simulation results obtained three phase line current waveform and back emf waveform and theoretical analysis of the wave get consistent, verify the sensorless control system accuracy.
出处
《机电工程技术》
2013年第7期19-23,共5页
Mechanical & Electrical Engineering Technology
