Zhuzhou Crrc Times Electric Co., Ltd

Crrc Zhuzhou Electric Locomotive Research Institute Co., Ltd.

Jisheng Dai

Jianghua Feng

Yong Liu

Wenqing Mei

Jiawei Yang

Zongshuai Li

Wenlong Zhu

Zhongjing Zhang

Hailong Xu

Ping Jiang

Yanhao Zhan

A device for diagnosing a fault in a bearing of a motor is provided. If the device operates in a fault diagnosis mode, a current signal acquisition unit acquires a real-time current signal of the motor, a residual signal acquisition unit extracts harmonic signals from the real-time current signal of the motor acquired by the current signal acquisition unit and remove a fundamental signal and a harmonic signal from the real-time current signal of the motor to acquire a residual signal, a fault feature extraction unit analyzes the residual signal in both time domain and frequency domain to extract a fault feature index of the bearing, and a fault diagnosis model unit performs, by using a bearing fault diagnosis model obtained through training, pattern recognition on the fault feature index to diagnose a fault state of the bearing.

Motor bearing failure diagnosis device

Growing community of inventors

Hunan, China

Jisheng Dai