无刷直流电动机传动控制系统的改进与实现

Improvement and Realization of the Drive Control System for Disc Type Brushless DC Motor

采用互补型功率ＭＯＳＦＥＴ组成的三相六状态的逆变器电路对逆变器主回路及其 驱动电路进行了改进驱动电路中分别使用独立电源供电的光电耦合器实现功率ＭＯＳＦＥＴ 的通用驱动方法，大大简化了电路的结构．根据样机中转子传感器的安装位置严格推导 出了位置传感器输出信号与逆变器驱动信号之间的逻辑关系，并以简单、可靠、经济的方 法实现了这一电路．

The improvements are made for inverter and drive circuit adopting mutual pattern three- phase-six-step inverter circuit. Photocopying devices with independent power supply are used to realize the common drive approach for power MOSFET in drive circuit, and the circuit structure is greatly simplified. The logic relation between the output signals of position sensors and the drive signals of inverter are strictly deduced according to the installment of the position of the rotor sensor in prototype motor, and the circuit is realized in a simple, reliable and economical method.