The electric measuring system: the main function is to process electrical signals by the sensor, shows the unbalance of rotor position and size.

电测系统：主要功能是处理由传感器来的电信号，显示出转子不平衡量所处的位置和大小。

youdao

A novel method that USES the harmonic back EMF signal to extract the rotor position is put forward, and a new position sensor merged into an organic whole with the motor is designed.

提出了一种利用谐波反电势信号实现电机转子位置检测的新方法，设计了与电机一体化的新型位置传感器。

youdao

Generally speaking, in the PMSM (Permanent-magnet synchronous motors) control system, mechanical sensor on the rotor shaft is required to detect the position and speed of the rotor.

一般来说，在电动机调速控制系统中需要在转子轴上安装机械传感器，测量电动机的速度和位置。

youdao