Self-Supervised Joint Learning Fault Diagnosis Method Based on Three-Channel Vibration Images

Sensors

Deji Chen¹  Weiwei Zhang¹  Yang Kong¹ 

[1] Key Laboratory of Embedded System and Service Computing, Tongji University, Shanghai 201804, China;

关键词: self-supervised learning;    fault diagnosis;    three-channel vibration images;    bearing;   

DOI  :  10.3390/s21144774

来源: DOAJ

【 摘 要 】

The accuracy of bearing fault diagnosis is of great significance for the reliable operation of rotating machinery. In recent years, increasing attention has been paid to intelligent fault diagnosis techniques based on deep learning. However, most of these methods are based on supervised learning with a large amount of labeled data, which is a challenge for industrial applications. To reduce the dependence on labeled data, a self-supervised joint learning (SSJL) fault diagnosis method based on three-channel vibration images is proposed. The method combines self-supervised learning with supervised learning, makes full use of unlabeled data to learn fault features, and further improves the feature recognition rate by transforming the data into three-channel vibration images. The validity of the method was verified using two typical data sets from a motor bearing. Experimental results show that this method has higher diagnostic accuracy for small quantities of labeled data and is superior to the existing methods.

【 授权许可】

Unknown