数字控制无刷直流电动机的驱动器硬件设计

Hardware Design of a Digital-controlled Brushless DC Motor Driver

介绍了一种基于数字控制的小功率无刷直流电动机(BLDCM)的功率驱动器硬件设计,包括电源、霍尔位置传感器电路、基于高速光耦的控制信号隔离调理电路、驱动电路及其芯片IR2130、以电力MOSFET为功率器件的逆变主电路、电流采样、保护电路设计等。给出了各部分设计电路图,分析了设计思路和原理。经过微控制器开环驱动运行,结果表明,各部分输出波形满足无刷直流电动机运行要求,电机运行平稳、可靠。

Hardware design of a low-power brushless DC motor （BLDCM） driver based on digital control was introduced, including the power-supply, Hall position sensor circuit, isolation and conditioning circuits of the control signal based on high-speed optical couplers, drive circuit and its chip IR2130, invert main circuit based on power-MOSFET, current sample circuit and protecting circuit. The design ideas and principles were analyzed. Open-loop running with MCU proves that the BLDCM is reliable and run smoothly. All running wave curves meet the requirements of BLDCM.