/ Method and device of judging reslover disconnection detecting resolver input/output signal magnitude

摘要

The method includes receiving a reference signal by a resolver disconnection / short circuit determination method; Rectifying the reference signal; Filtering the rectified reference signal; Smoothing the filtered reference signal; And transmitting a reference signal anomaly signal if the smoothed reference signal voltage magnitude is below a reference voltage magnitude. According to the present invention, the resolver input / output signal state is converted into AC / DC, and the magnitude of the DC voltage is obtained. The size of the DC voltage is compared with the reference voltage to provide resolver disconnection determination information. Therefore, it is convenient to determine whether the resolver position sensor is disconnected regardless of the traveling speed, as compared with the conventional technology in which the hybrid vehicle can detect the motor position signal only at low speed and can not detect the motor position signal at high speed. As a result, it is possible to improve the reliability of the motor position sensing used in the hybrid vehicle by preventing malfunctions that may occur in the vehicle in advance. In addition, fail-safe performance can be enforced to ensure safety in the event of a component failure in the motor and the inverter so that they do not accidentally congest.