关键词: 旋变传感器；R/D 转换器；驱动电机；检修

Abstract: Modern all-electric drive motor widely used permanent magnet synchronous motor, based on the directional vector control technology, the motor position and speed sensor widely used magnetic resistance type rotating transformer, spin variable sensor signals need to deal with, through the R/D converter to DSP and MCU read, spin variable signal for motor control precision is very important. Therefore, by analyzing the control scheme of the drive motor of modern pure electric vehicle, this paper aims at the decoding chip AD2S1205 of AD company. The chip adopts Type II tracking loop, which continuously tracks the position and speed of rotation without external conversion and waiting state. It has system fault detection and can detect the loss of rotation signal. Input signal is out of range or position signal tracking is lost. Taking Geely Emgrand EV450 pure electric vehicle as an example, a complete overhaul scheme is provided for the fault phenomenon, fault generation mechanism and fault detection of the rotating system.

Key words: Resolver; R/D converter; Drive motor; Overhaul