AFARN: Domain Adaptation for Intelligent Cross-Domain Bearing Fault Diagnosis in Nuclear Circulating Water Pump

Domain adaptation can transfer cross-domain diagnosis knowledge by minimizing the divergence of labeled source and unlabeled target data. However, the model neglects to maximize physics prior knowledge during feature extraction and distribution alignment, resulting in a noninterpretable model even n...

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Bibliographic Details
Published inIEEE transactions on industrial informatics Vol. 19; no. 3; pp. 3229 - 3239
Main Authors Cheng, Wei, Liu, Xue, Xing, Ji, Chen, Xuefeng, Ding, Baoqing, Zhang, Rongyong, Zhou, Kangning, Huang, Qian
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.03.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptation
Adaptation models
Adaptive fault attention residual network (AFARN)
Alignment
attention mechanism
domain adaptation
Domains
Fault diagnosis
Feature extraction
Indexes
intelligent bearing fault diagnosis
Knowledge management
Machine learning
nuclear circulating water pump
Rolling bearings
Task analysis
Water circulation
Water pumps
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Summary:Domain adaptation can transfer cross-domain diagnosis knowledge by minimizing the divergence of labeled source and unlabeled target data. However, the model neglects to maximize physics prior knowledge during feature extraction and distribution alignment, resulting in a noninterpretable model even negative transfer. Hence, a physics-informed domain adaptation network, termed adaptive fault attention residual network (AFARN), is proposed. First, an adaptive fault attention mechanism is designed to refine features guided by bearing fault characteristics, suited to generating diagnosis-relevant features. Then, several metrics are applied to minimize the marginal and conditional distribution discrepancy of features, thus, generalizing the model from source to target domain. The AFARN utilizes the fault characteristics and label information simultaneously to train the model, which can enhance the distribution alignment of diagnosis-relevant features, thus, providing an interpretable knowledge transfer. Finally, experiments on public and circulating water pump datasets show that AFARN can enhance fault feature learning and diagnosis accuracy.
ISSN:1551-3203
1941-0050
DOI:10.1109/TII.2022.3177459