Intelligent Fault Diagnosis of Bearing Using Enhanced Deep Transfer Auto-encoder

被引：0
|
作者：
Shao H. [1 ]
Zhang X. [2 ]
Cheng J. [1 ]
Yang Y. [1 ]
机构：
[1] State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha
[2] Xi'an Aeronautics Computing Technique Research Institute, AVIC, Xi'an
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 09期
关键词：
Bearing fault; Enhanced deep auto-encoder; Nonnegative constraint; Scaled exponential linear unit; Transfer diagnosis;
D O I：
10.3901/JME.2020.09.084
中图分类号：
学科分类号：
摘要：
The collected data with labeled information of bearing is far insufficient in engineering practice, which is a great challenge for effectively training an intelligent diagnosis model. A new method called enhanced deep transfer auto-encoder is proposed for bearing fault diagnosis of different machines. First, scaled exponential linear unit is used to improve the quality of the mapped vibration data collected from bearing. Second, nonnegative constraint is adopted to modify the cost function to reduce reconstruction error. Third, an enhanced deep auto-encoder model is pre-trained with sufficient available data in the source domain and its parameters are transferred to initialize the target domain model. Finally, the enhanced deep transfer model is fine-tuned with only one training sample in the target domain to adapt to the characteristics of the remaining testing samples. Two sets of vibration data from bearings installed in the different machines are used to verify the feasibility of the proposed method. The analysis result confirms that the proposed method is able to achieve effective transfer diagnosis between different machines. © 2020 Journal of Mechanical Engineering.
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页码：84 / 90
页数：6
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