Rotating machinery cross-operating condition fault diagnosis based on joint weighted multi-scale migration algorithm DOI
Jing Zhu, Ming‐Hui Chen,

Yuzhuo Zhang

et al.

Structural Health Monitoring, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

In rotating machinery fault diagnosis, the distribution difference of vibration signals across working conditions and insufficient feature extraction significantly reduce diagnostic accuracy are often accompanied by negative transfer, making transfer learning from source domain to target complicated unstable. this paper, an innovative cross-working condition network, Joint weighted multi-scale network (JWMS-NET), is designed. The JWMS-NET model innovatively combines a dynamic convolutional residual as extractor, pseudo-label classification loss, Jensen–Shannon divergence (JSD) loss. First, JSD-based loss metric proposed enhance confusion alignment cross-domain features, thereby reducing impact inconsistent distributions in two domains. Second, response problem that may occur during extraction, paper designs improved mechanism. This mechanism effectively adjusts weights samples different domains through adaptive weight allocation, suppresses effect, prompts extractor learn more robust consistent features. Finally, can further improve optimizing representation flexibly controlling decision boundary. average reached 99.66%, 99.84%, 99.41% 26 cross-speed migration tasks on three datasets. Through subsequent experimental comparisons, outperforms existing adaptation model, verifying its superiority robustness bearing diagnosis.

Language: Английский

Source-free domain adaptation framework for rotating machinery fault diagnosis by reliable self-learning and auxiliary contrastive learning DOI

Zongzhen Ye,

Jun Wu, Xiongkui He

et al.

Reliability Engineering & System Safety, Journal Year: 2025, Volume and Issue: unknown, P. 111228 - 111228

Published: May 1, 2025

Language: Английский

Citations

0
Rotating machinery cross-operating condition fault diagnosis based on joint weighted multi-scale migration algorithm DOI
Jing Zhu, Ming‐Hui Chen,

Yuzhuo Zhang

et al.

Structural Health Monitoring, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

In rotating machinery fault diagnosis, the distribution difference of vibration signals across working conditions and insufficient feature extraction significantly reduce diagnostic accuracy are often accompanied by negative transfer, making transfer learning from source domain to target complicated unstable. this paper, an innovative cross-working condition network, Joint weighted multi-scale network (JWMS-NET), is designed. The JWMS-NET model innovatively combines a dynamic convolutional residual as extractor, pseudo-label classification loss, Jensen–Shannon divergence (JSD) loss. First, JSD-based loss metric proposed enhance confusion alignment cross-domain features, thereby reducing impact inconsistent distributions in two domains. Second, response problem that may occur during extraction, paper designs improved mechanism. This mechanism effectively adjusts weights samples different domains through adaptive weight allocation, suppresses effect, prompts extractor learn more robust consistent features. Finally, can further improve optimizing representation flexibly controlling decision boundary. average reached 99.66%, 99.84%, 99.41% 26 cross-speed migration tasks on three datasets. Through subsequent experimental comparisons, outperforms existing adaptation model, verifying its superiority robustness bearing diagnosis.

Language: Английский

Citations

0