Article(id=1263819612114830012, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, articleNumber=null, orderNo=null, doi=10.19693/j.issn.1673-3185.04312, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734019200000, receivedDateStr=2024-12-13, revisedDate=1752595200000, revisedDateStr=2025-07-16, acceptedDate=null, acceptedDateStr=null, onlineDate=1779247676161, onlineDateStr=2026-05-20, pubDate=1777478400000, pubDateStr=2026-04-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1779247676161, onlineIssueDateStr=2026-05-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1779247676161, creator=13041195026, updateTime=1779247676161, updator=13041195026, issue=Issue{id=1263818962224165389, tenantId=1146029695717560320, journalId=1263530845441638439, year='2026', volume='21', issue='2', pageStart='1', pageEnd='444', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1779247521215, creator=13041195026, updateTime=1779247861438, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1263820389638070544, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1263820389638070545, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=358, endPage=366, ext={EN=ArticleExt(id=1263819615164089041, articleId=1263819612114830012, tenantId=1146029695717560320, journalId=1263530845441638439, language=EN, title=Fault diagnosis method for reducers based on contrastive learning and convolution transformer networks with few labeled samples, columnId=1263819608688025684, journalTitle=Chinese Journal of Ship Research, columnName=Marine Machinery, Electrical Equipment and Automation, runingTitle=null, highlight=null, articleAbstract=
Objectives To address the challenge of low fault diagnosis accuracy in traditional neural networks with few labeled samples, a method based on contrastive learning and convolution transformer network is proposed.
Methods First, raw monitoring data are transformed into similar sample pairs by data augmentation. These similar sample pairs are then mapped to a deep feature space by a feature extractor. A transformer network is utilized to design cross-prediction tasks for both local and global comparisons, facilitating the clustering of data with the same fault type by comparing the intrinsic similarity between the same batches of data. Finally, the downstream classification network is trained with few labeled samples to improve the diagnostic performance of the proposed model.
Results The effectiveness of the proposed method is validated using a self-built reducer test rig. The results show that accuracy of the proposed method reaches 98.38% with few labeled samples, showing significant advantages over existing methods.
Conclusions The research results can provide the key technology for fault diagnosis of industrial equipment with few labeled samples, contributing to the advancement of intelligent manufacturing.
, correspAuthors=Jun WU, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Chinese Journal of Ship Research. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yukang NIE, Zhongdian TIAN, Qiming SHU, Heng ZHANG, Jun WU), CN=ArticleExt(id=1263819702799876927, articleId=1263819612114830012, tenantId=1146029695717560320, journalId=1263530845441638439, language=CN, title=基于对比学习和卷积自注意力网络的少标记样本减速机故障诊断方法, columnId=1263819610273472602, journalTitle=中国舰船研究, columnName=机电与控制, runingTitle=null, highlight=null, articleAbstract=
目的 针对传统神经网络在少标记样本下故障诊断准确率低的问题,提出一种基于对比学习和卷积自注意力网络方法。
方法 首先,原始监测数据经过数据增强得到相似样本对。同时,利用特征提取器将相似样本对映射到深层特征空间。然后,利用Transformer设计交叉预测任务进行局部对比和全局对比,通过比较相同批次数据间的内在相似性,实现同故障类型数据的聚类。最后,通过少量标记样本训练下游分类网络,提高模型的诊断性能。
结果 基于自建的减速机实验台,验证了所提方法的有效性。结果表明,所提方法在少标记样本下的准确率达到98.38%。相比现有方法优势明显。
结论 研究成果可为工业设备少标记样本故障诊断提供关键技术,助力智能制造发展。
, correspAuthors=吴军, authorNote=null, correspAuthorsNote=
* 吴军
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Contrastive learning and convolution transformer network architecture, figureFileSmall=r4/yUPmb88k0b8qB24SlvA==, figureFileBig=L3y8U1hDUsFfy/xzOMVLKg==, tableContent=null), ArticleFig(id=1263819716070654889, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图1, caption=
对比学习和卷积自注意力网络框架图, figureFileSmall=r4/yUPmb88k0b8qB24SlvA==, figureFileBig=L3y8U1hDUsFfy/xzOMVLKg==, tableContent=null), ArticleFig(id=1263819716641080237, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.2, caption=
Cross-prediction task, figureFileSmall=fnPtTPA0wSEPBNiG8KNe/A==, figureFileBig=P7k7XSCi++tqGKY5cN4gIw==, tableContent=null), ArticleFig(id=1263819716951458734, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图2, caption=
交叉预测任务, figureFileSmall=fnPtTPA0wSEPBNiG8KNe/A==, figureFileBig=P7k7XSCi++tqGKY5cN4gIw==, tableContent=null), ArticleFig(id=1263819717144396719, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.3, caption=
Transformer model structure, figureFileSmall=zjuMQuNhIEnIIrPLv6TLIw==, figureFileBig=UlgadWUPKTNxMRJk9HX7Lw==, tableContent=null), ArticleFig(id=1263819717287003057, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图3, caption=
Transformer结构图, figureFileSmall=zjuMQuNhIEnIIrPLv6TLIw==, figureFileBig=UlgadWUPKTNxMRJk9HX7Lw==, tableContent=null), ArticleFig(id=1263819717442192308, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.4, caption=
Fault diagnosis process based on contrastive learning and convolution transformer network, figureFileSmall=0bMMUUzajvtz7W0bINGV8g==, figureFileBig=ewmt9PJBKSEZrD5ojsZ2+A==, tableContent=null), ArticleFig(id=1263819717593187253, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图4, caption=
基于对比学习和卷积自注意力网络的减速机故障诊断流程, figureFileSmall=0bMMUUzajvtz7W0bINGV8g==, figureFileBig=ewmt9PJBKSEZrD5ojsZ2+A==, tableContent=null), ArticleFig(id=1263819717903565754, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.5, caption=
Fault simulation test bench of reducer, figureFileSmall=gkF3RsxgdV4JMO3kIxrVnw==, figureFileBig=BxD/gO5Aois1C0XoGwJZ7w==, tableContent=null), ArticleFig(id=1263819717995840446, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图5, caption=
减速机故障模拟实验台, figureFileSmall=gkF3RsxgdV4JMO3kIxrVnw==, figureFileBig=BxD/gO5Aois1C0XoGwJZ7w==, tableContent=null), ArticleFig(id=1263819718138446784, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.6, caption=
Diagnostic results of different fault modes, figureFileSmall=cGcr2xhvl4cNwaqtxlmwuA==, figureFileBig=0q7iOwzwVViPxuER4UUNww==, tableContent=null), ArticleFig(id=1263819718482379717, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图6, caption=
不同故障模式诊断结果, figureFileSmall=cGcr2xhvl4cNwaqtxlmwuA==, figureFileBig=0q7iOwzwVViPxuER4UUNww==, tableContent=null), ArticleFig(id=1263819718616597447, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.7, caption=
t-SNE dimensionality reduction, figureFileSmall=rovoNeglqBxizvbaGr3Uag==, figureFileBig=vyny1JYx20JQpXXABJ5cHw==, tableContent=null), ArticleFig(id=1263819718700483528, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图7, caption=
t-SNE降维, figureFileSmall=rovoNeglqBxizvbaGr3Uag==, figureFileBig=vyny1JYx20JQpXXABJ5cHw==, tableContent=null), ArticleFig(id=1263819718788563915, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.8, caption=
Comparison results of different data augmentation methods, figureFileSmall=H2N3NRpMwUjsuI5V6FnwJg==, figureFileBig=A6czvsNzN4BM5gz2KyqGXA==, tableContent=null), ArticleFig(id=1263819720436925389, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图8, caption=
不同数据增强方法对比结果, figureFileSmall=H2N3NRpMwUjsuI5V6FnwJg==, figureFileBig=A6czvsNzN4BM5gz2KyqGXA==, tableContent=null), ArticleFig(id=1263819720571143119, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.9, caption=
Effect of sample size on model performance, figureFileSmall=4UWeLEfLlz0kp0PfIhMD3w==, figureFileBig=RJnGgmo2HoyEVlSvZPwrKw==, tableContent=null), ArticleFig(id=1263819720743109587, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图9, caption=
样本量对模型性能影响, figureFileSmall=4UWeLEfLlz0kp0PfIhMD3w==, figureFileBig=RJnGgmo2HoyEVlSvZPwrKw==, tableContent=null), ArticleFig(id=1263819720868938709, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Fig.10, caption=
Accuracy of different methods, figureFileSmall=aO5RGQD+nAE0fLLkou8O6w==, figureFileBig=XTxcUBqruuPDa/6ycZFBvg==, tableContent=null), ArticleFig(id=1263819721095431127, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=图10, caption=
不同方法的准确率, figureFileSmall=aO5RGQD+nAE0fLLkou8O6w==, figureFileBig=XTxcUBqruuPDa/6ycZFBvg==, tableContent=null), ArticleFig(id=1263819721279980507, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Tab.1, caption=
Description of monitoring data
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| 编号 | 故障类型 | 故障模式 | 转速/(r·min−1) | 负载 | 信号长度 |
| $ \mathrm{D}1 $ | | 正常 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}2 $ | 单一故障 | 点蚀 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}3 $ | 断齿 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}4 $ | 轴承外圈磨损 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}5 $ | 复合故障 | 点蚀+轴承外圈磨损 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}6 $ | 断齿+轴承外圈磨损 | 1000 | 0.4 | 1256000 |
), ArticleFig(id=1263819721426781149, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=表1, caption=
监测数据描述
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| 编号 | 故障类型 | 故障模式 | 转速/(r·min−1) | 负载 | 信号长度 |
| $ \mathrm{D}1 $ | | 正常 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}2 $ | 单一故障 | 点蚀 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}3 $ | 断齿 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}4 $ | 轴承外圈磨损 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}5 $ | 复合故障 | 点蚀+轴承外圈磨损 | 1000 | 0.4 | 1256000 |
| $ \mathrm{D}6 $ | 断齿+轴承外圈磨损 | 1000 | 0.4 | 1256000 |
), ArticleFig(id=1263819721510667231, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=EN, label=Tab.2, caption=
Parameters set in data augmentation methods
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| 方法 | 参数 | | 方法 | 参数 |
| 噪声添加 | SNR = 6 | | 零值遮掩 | $ p=0.2 $ |
| 幅值缩放 | $ a=1.3 $ | | 切片重排 | $ M=5 $ |
), ArticleFig(id=1263819721649079268, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263819612114830012, language=CN, label=表2, caption=
数据增强方法参数设置
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| 方法 | 参数 | | 方法 | 参数 |
| 噪声添加 | SNR = 6 | | 零值遮掩 | $ p=0.2 $ |
| 幅值缩放 | $ a=1.3 $ | | 切片重排 | $ M=5 $ |
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