无刷直流电机用旋转变压器的调零方法

Zero Point Adjustment Method for Rotary Transformers Used in Brushless DC Motors

无刷直流电机由于内部没有电刷,只能通过位置传感器将转子的位置信号传递给控制器,实现电子换向功能。旋转变压器作为位置传感器,具有结构简单、动作灵敏、运行可靠,对环境条件要求低等特点。无刷直流电机在安装旋转变压器时,需要有一个调节零点过程,以保证其可以正常的运转。本文提供一种无刷直流电机用旋转变压器调节零点的简便方法,该方法不需要过多的电气设备,操作简单、上手方便,可以有效的降低调试门槛与成本,对无刷直流电机用旋转变压器零点的调试具有一定的工程指导意义。

Due to the lack of internal brushes, brushless DC motors can only transmit the position signal of the rotor to the controller through position sensors, achieving electronic commutation function. As a position sensor, a rotary transformer has the characteristics of simple structure, sensitive action, reliable operation, and low requirements for environmental conditions. When installing resolver, brushless DC motor needs a zero adjustment process to ensure its normal operation. This article provides a simple method for adjusting the zero point of a rotary transformer used in brushless DC motors. This method does not require too much electrical equipment, is simple to operate, and is easy to use. It can effectively reduce the debugging threshold and cost, and has certain engineering guidance significance for the zero point debugging of a rotary transformer used in brushless DC motors.