无刷直流电机方波正弦波复合驱动器设计

摘要

For brushless DC motor (BLDCM), the pulse torque and noise is large with trapezoidal excitation and low with sinusoidal excitation. A BLDCM driver with trapezoidal and sinusoidal compound excitation based on hall sensor signals was presented. Without modifying hardware circuit, the compound driver for BLDCM separately with trapezoidal or sinusoidal excitation or the dynamic switching between these two methods were realized using only the software programming. The experimental results show that BLDCM run table and the switching mode is reliable. The compound driver proposed has extended the application of BLDCM with high accuracy and low noise.%针对无刷直流电机方波驱动出力大,正弦波驱动转矩脉动和噪声小的特点,设计了基于霍耳传感器信号的无刷直流电机方波与正弦波复合驱动器.在不改动硬件电路的前提下,利用软件编程实现了无刷直流电机的方波驱动与正弦波驱动以及两种驱动方式间的动态切换.实验结果表明,无刷直流电机运行稳定,切换方式灵活.该设计的方波正弦波复合驱动器可以有效拓宽无刷直流电机在高精度、低噪声环境下的应用.