【摘要】 采用体积小、重量轻、效率高及可靠性好的无刷直流电机来代替交流电机作为电控门的动力源。以AT-mega16单片机为核心设计了硬件和软件系统,分析了BLDC的控制原理、检测反电动势的原理,同时给出了一种检测反电动势过零的简单电路。更多还原

【Abstract】 Sensorless and brushless DC motor used for auto door features small size,weightless,efficient and credible instead of AC motor.We used ATmega16 SCM as the control center in hardware and software systems,and control principle,detection principle of the B-EFT are analyzed in this paper.This paper give a simple circuit for detection zero-crossing of the B-EFT.更多还原