Article(id=1241049260704190863, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.06.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1721750400000, receivedDateStr=2024-07-24, revisedDate=1730649600000, revisedDateStr=2024-11-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1773818801332, onlineDateStr=2026-03-18, pubDate=1749916800000, pubDateStr=2025-06-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773818801332, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773818801332, creator=13701087609, updateTime=1773818801332, updator=13701087609, issue=Issue{id=1241049258309251153, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='6', pageStart='1', pageEnd='158', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773818800761, creator=13701087609, updateTime=1773819014967, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241050156821434987, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241050156821434988, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=72, endPage=81, ext={EN=ArticleExt(id=1241049261228478866, articleId=1241049260704190863, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Semi-supervised gearbox fault diagnosis under variable working conditions based on masked contrastive learning, columnId=1228282191914926752, journalTitle=Journal of Mechanical Strength, columnName=Vibration·Noise·Monitoring·Diagnosis, runingTitle=null, highlight=null, articleAbstract=
To address the problem that it is difficult to label variable working condition gearbox fault samples and the significant data distribution discrepancies in practical engineering, which result in reduced accuracy of fault diagnosis models,a semi-supervised gearbox fault diagnosis method based on masked contrastive learning is proposed. Firstly, a random mask was used to hide part of the information in the unlabeled dataset, generating two different masked instances for each unlabeled sample. Secondly, a dynamic convolutional neural network was employed to dynamically weight and aggregate the masked instances, enabling discriminative feature modeling of different masked instances. Then, a contrastive learning framework was constructed with the optimization goal of maximizing the similarity between features of different masked instances. By enhancing the consistency of feature representations of masked instance pairs, the model's dependency on labels was reduced. Finally, during the fine-tuning phase, a domain-conditioned feature correction strategy was introduced to generate target domain feature corrections. By aligning source domain features and target domain corrected features according to the metric of minimizing domain feature distribution discrepancies, the method explicitly reduces the domain distribution differences caused by varying working conditions. Validation on a variable working condition gearbox fault dataset demonstrates the effectiveness of the proposed method.
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针对实际工程中变工况齿轮箱故障样本标注困难且数据分布差异显著,导致故障诊断模型精度降低的问题,提出了一种基于掩码对比学习的半监督齿轮箱变工况故障诊断方法。首先,利用随机掩码隐藏无标签数据集中部分信息,为每个无标签样本生成两个不同掩码实例;其次,采用动态卷积神经网络对掩码实例动态加权聚合,实现对不同掩码实例判别性特征建模;然后,构建对比学习框架,以最大化不同掩码实例特征间的相似性为优化目标,通过增强掩码视角实例对的特征表示一致性,降低模型对标签的依赖;最后,在微调阶段引入域条件特征校正策略生成目标域特征修正量,并根据最小化域间特征分布差异性度量对齐源域特征和目标域修正特征,显式地减少由于工况变化引起的域间分布差异。通过齿轮箱变工况故障数据集进行验证,证明了所提方法的有效性。
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左芳君(通信作者),女,1979年生,陕西渭南人,博士研究生,副教授;主要研究方向为可靠性系统工程、寿命与可靠性;E-mail:
448613724@qq.com。
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张慧云,女,1978年生,陕西渭南人,硕士研究生,副教授;主要研究方向为机械设计与制造;E-mail:149449567@qq.com。
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张慧云,女,1978年生,陕西渭南人,硕士研究生,副教授;主要研究方向为机械设计与制造;E-mail:149449567@qq.com。
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1.School of Intelligent Manufacturing, Chengdu Technological University, Chengdu 610031, China), AuthorCompanyExt(id=1241049279360455391, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, companyId=1241049279343678173, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.成都工业学院 智能制造学院,成都 610031)]), AuthorCompany(id=1241049281013011177, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, xref=2., ext=[AuthorCompanyExt(id=1241049281021399785, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, companyId=1241049281013011177, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.School of Mechanical Engineering, Sichuan University, Chengdu 610065, China), AuthorCompanyExt(id=1241049281029788393, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, companyId=1241049281013011177, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.四川大学 机械工程学院,成都 610065)])], figs=[ArticleFig(id=1241049287040226214, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.1, caption=
Network structure, figureFileSmall=qbQehJ3nk2UroWMl/CYIkA==, figureFileBig=k+REs/eeP3eflo0Qpnt6ow==, tableContent=null), ArticleFig(id=1241049287132500910, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图1, caption=
网络结构, figureFileSmall=qbQehJ3nk2UroWMl/CYIkA==, figureFileBig=k+REs/eeP3eflo0Qpnt6ow==, tableContent=null), ArticleFig(id=1241049287585485755, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.2, caption=
Dynamic convolution structure, figureFileSmall=6ZAZdy3bC/WRDhziBZ1seA==, figureFileBig=ZhLFlTpomCc3kvYH7/+N1g==, tableContent=null), ArticleFig(id=1241049287753257925, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图2, caption=
动态卷积结构, figureFileSmall=6ZAZdy3bC/WRDhziBZ1seA==, figureFileBig=ZhLFlTpomCc3kvYH7/+N1g==, tableContent=null), ArticleFig(id=1241049287912641482, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.3, caption=
Fault diagnosis flow chart, figureFileSmall=MKvmQp6ZT8Z6k5pnfK+HqA==, figureFileBig=/ZEJ2pxNTrFufjpueu6LNg==, tableContent=null), ArticleFig(id=1241049288042664906, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图3, caption=
故障诊断流程, figureFileSmall=MKvmQp6ZT8Z6k5pnfK+HqA==, figureFileBig=/ZEJ2pxNTrFufjpueu6LNg==, tableContent=null), ArticleFig(id=1241049288202048464, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.4, caption=
Gearbox fault test rig, figureFileSmall=Og31cxLUyJs9DESSAunh7w==, figureFileBig=HsMjm/f5SE1+LcCJ/AdVuw==, tableContent=null), ArticleFig(id=1241049289988821974, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图4, caption=
齿轮箱故障试验台, figureFileSmall=Og31cxLUyJs9DESSAunh7w==, figureFileBig=HsMjm/f5SE1+LcCJ/AdVuw==, tableContent=null), ArticleFig(id=1241049290680882136, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.5, caption=
Comparison of the results of each method with C→C label sample size of 30, figureFileSmall=HEdlVMnsnN4lRZiqjPR56A==, figureFileBig=fOtTRavwZyaX5naZcvrlsA==, tableContent=null), ArticleFig(id=1241049290831877085, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图5, caption=
C→C标签样本量为30的各方法结果对比, figureFileSmall=HEdlVMnsnN4lRZiqjPR56A==, figureFileBig=fOtTRavwZyaX5naZcvrlsA==, tableContent=null), ArticleFig(id=1241049290936734689, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.6, caption=
Comparison of the feature distribution of each method with C→C label sample size of 30, figureFileSmall=XP/PLx5FN06+erVrSf4Hpw==, figureFileBig=dgfAoUJ9wK5+6x5DpkuSVA==, tableContent=null), ArticleFig(id=1241049291033203684, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图6, caption=
C→C标签样本量为30的各方法特征分布, figureFileSmall=XP/PLx5FN06+erVrSf4Hpw==, figureFileBig=dgfAoUJ9wK5+6x5DpkuSVA==, tableContent=null), ArticleFig(id=1241049291150644199, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.7, caption=
Comparison of the results of each method with A→C label sample size of 30, figureFileSmall=AWuMNAF+p3xJXvbzlyyRWA==, figureFileBig=8iyKW24P8FfnX5d++WfH+g==, tableContent=null), ArticleFig(id=1241049291423273964, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图7, caption=
A→C标签样本量为30的各方法结果对比, figureFileSmall=AWuMNAF+p3xJXvbzlyyRWA==, figureFileBig=8iyKW24P8FfnX5d++WfH+g==, tableContent=null), ArticleFig(id=1241049291591046130, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.8, caption=
Probability density diagram of different methods, figureFileSmall=B7uhb5a5PSXLO/s52KaRXg==, figureFileBig=Y3stFfXJ/x/lOBuRvJcRkQ==, tableContent=null), ArticleFig(id=1241049291863675894, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图8, caption=
不同方法概率密度图, figureFileSmall=B7uhb5a5PSXLO/s52KaRXg==, figureFileBig=Y3stFfXJ/x/lOBuRvJcRkQ==, tableContent=null), ArticleFig(id=1241049291981116410, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Fig.9, caption=
Feature distribution of each method under time-varying rotational, figureFileSmall=U0bSEB0Ma8vyOcF7aDLByg==, figureFileBig=sve8RDxB8oawURclguUC+w==, tableContent=null), ArticleFig(id=1241049292211803135, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=图9, caption=
时变转速下各方法特征分布, figureFileSmall=U0bSEB0Ma8vyOcF7aDLByg==, figureFileBig=sve8RDxB8oawURclguUC+w==, tableContent=null), ArticleFig(id=1241049292366992384, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.1, caption=
Gearbox data set
, figureFileSmall=null, figureFileBig=null, tableContent=
标签 Labels | 故障类型 Fault type | 训练集Training set | 测试集Test set |
|---|
无标签 Without labels | 有标签 With labels | 无标签 Without labels |
|---|
| 0 | 正常 Normal | 300 | 50 | 100 |
| 1 | 点蚀 Pitting | 300 | 50 | 100 |
| 2 | 断齿 Tooth breakage | 300 | 50 | 100 |
| 3 | 裂纹 Crack | 300 | 50 | 100 |
| 4 | 磨损 Wear | 300 | 50 | 100 |
| 合计 Total | 1 500 | 250 | 500 |
), ArticleFig(id=1241049292631232513, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=表1, caption=
齿轮箱数据集
, figureFileSmall=null, figureFileBig=null, tableContent=
标签 Labels | 故障类型 Fault type | 训练集Training set | 测试集Test set |
|---|
无标签 Without labels | 有标签 With labels | 无标签 Without labels |
|---|
| 0 | 正常 Normal | 300 | 50 | 100 |
| 1 | 点蚀 Pitting | 300 | 50 | 100 |
| 2 | 断齿 Tooth breakage | 300 | 50 | 100 |
| 3 | 裂纹 Crack | 300 | 50 | 100 |
| 4 | 磨损 Wear | 300 | 50 | 100 |
| 合计 Total | 1 500 | 250 | 500 |
), ArticleFig(id=1241049294384451588, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.2, caption=
Model Parameter
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| 模型 Model | 操作 Operation | 大小/步长 Size/step size |
|---|
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 32×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 64×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 128×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
全连接层 Fully-connected layer | Fully-connected layer | — |
), ArticleFig(id=1241049294543835147, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=表2, caption=
模型参数
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| 模型 Model | 操作 Operation | 大小/步长 Size/step size |
|---|
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 32×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 64×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
动态卷积层 Dynamic convolutional layer | DyConv-BN-ReLU | 128×3×1/1×1 |
最大池化层 Max pooling layer | Maxpooling | 2×1 |
全连接层 Fully-connected layer | Fully-connected layer | — |
), ArticleFig(id=1241049294631915534, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.3, caption=
Classification accuracy under the same working condition %
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工况 Working condition | 方法 Methods | 标签样本数量 Number of label samples |
|---|
| 10 | 20 | 30 | 40 | 50 |
|---|
| SJMMD | 80.14 | 83.59 | 84.20 | 84.24 | 88.51 |
| DBN | 72.36 | 73.82 | 75.25 | 76.29 | 79.86 |
| A→A | WSAN | 81.24 | 82.36 | 83.44 | 84.49 | 85.97 |
| SMoCo | 90.10 | 91.49 | 93.99 | 94.12 | 94.89 |
| 所提方法 Proposed method | 95.65 | 95.83 | 97.01 | 98.19 | 100.00 |
| SJMMD | 81.00 | 84.50 | 84.59 | 85.06 | 89.72 |
| DBN | 71.34 | 73.00 | 76.84 | 77.10 | 80.80 |
| B→B | WSAN | 82.19 | 83.20 | 84.31 | 85.49 | 86.99 |
| SMoCo | 90.97 | 92.50 | 93.33 | 93.08 | 95.60 |
| 所提方法 Proposed method | 96.50 | 96.88 | 97.01 | 97.90 | 99.21 |
| SJMMD | 78.13 | 82.01 | 85.61 | 86.23 | 88.17 |
| DBN | 74.04 | 75.59 | 76.80 | 79.21 | 81.89 |
| C→C | WSAN | 83.02 | 84.34 | 87.45 | 87.59 | 88.07 |
| SMoCo | 92.14 | 93.67 | 93.87 | 94.05 | 95.31 |
| 所提方法 Proposed method | 96.31 | 97.53 | 98.60 | 98.92 | 99.98 |
), ArticleFig(id=1241049294774521874, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=表3, caption=
同工况下分类准确率
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工况 Working condition | 方法 Methods | 标签样本数量 Number of label samples |
|---|
| 10 | 20 | 30 | 40 | 50 |
|---|
| SJMMD | 80.14 | 83.59 | 84.20 | 84.24 | 88.51 |
| DBN | 72.36 | 73.82 | 75.25 | 76.29 | 79.86 |
| A→A | WSAN | 81.24 | 82.36 | 83.44 | 84.49 | 85.97 |
| SMoCo | 90.10 | 91.49 | 93.99 | 94.12 | 94.89 |
| 所提方法 Proposed method | 95.65 | 95.83 | 97.01 | 98.19 | 100.00 |
| SJMMD | 81.00 | 84.50 | 84.59 | 85.06 | 89.72 |
| DBN | 71.34 | 73.00 | 76.84 | 77.10 | 80.80 |
| B→B | WSAN | 82.19 | 83.20 | 84.31 | 85.49 | 86.99 |
| SMoCo | 90.97 | 92.50 | 93.33 | 93.08 | 95.60 |
| 所提方法 Proposed method | 96.50 | 96.88 | 97.01 | 97.90 | 99.21 |
| SJMMD | 78.13 | 82.01 | 85.61 | 86.23 | 88.17 |
| DBN | 74.04 | 75.59 | 76.80 | 79.21 | 81.89 |
| C→C | WSAN | 83.02 | 84.34 | 87.45 | 87.59 | 88.07 |
| SMoCo | 92.14 | 93.67 | 93.87 | 94.05 | 95.31 |
| 所提方法 Proposed method | 96.31 | 97.53 | 98.60 | 98.92 | 99.98 |
), ArticleFig(id=1241049295143620627, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.4, caption=
Accuracy under variable working conditions
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样本数量 Samples | 方法 Methods | 不同转速 Different speeds |
|---|
| A→B | A→C | B→C | B→A | C→A | C→B | 平均Average |
|---|
| SJMMD | 73.84 | 68.28 | 76.24 | 79.37 | 63.18 | 79.90 | 73.80 |
| DBN | 66.53 | 59.43 | 61.13 | 62.45 | 45.97 | 74.21 | 61.62 |
| 10 | WSAN | 78.31 | 78.00 | 79.59 | 79.15 | 75.14 | 82.34 | 78.76 |
| SMoCo | 89.65 | 85.22 | 90.9 | 91.39 | 87.20 | 90.77 | 89.52 |
| 所提方法Proposed method | 94.21 | 94.73 | 94.69 | 95.33 | 94.45 | 96.23 | 94.44 |
| SJMMD | 74.85 | 69.40 | 77.40 | 80.61 | 64.34 | 81.20 | 74.07 |
| DBN | 66.89 | 60.25 | 62.31 | 63.93 | 52.81 | 75.98 | 63.70 |
| 20 | WSAN | 79.63 | 78.78 | 80.63 | 79.91 | 76.28 | 83.12 | 79.73 |
| SMoCo | 90.08 | 86.32 | 91.48 | 92.55 | 87.73 | 91.35 | 89.25 |
| 所提方法Proposed method | 95.39 | 94.79 | 95.64 | 96.44 | 95.45 | 96.73 | 95.07 |
| SJMMD | 75.86 | 70.41 | 78.45 | 81.73 | 64.82 | 82.90 | 75.70 |
| DBN | 66.99 | 65.30 | 65.62 | 65.74 | 54.89 | 77.87 | 66.07 |
| 30 | WSAN | 81.55 | 81.43 | 81.82 | 81.15 | 77.57 | 83.61 | 81.69 |
| SMoCo | 91.40 | 87.07 | 92.18 | 93.27 | 88.52 | 91.60 | 90.01 |
| 所提方法Proposed method | 96.55 | 96.87 | 96.49 | 97.55 | 97.65 | 97.85 | 97.16 |
| SJMMD | 76.99 | 71.86 | 79.93 | 82.95 | 65.63 | 84.16 | 76.42 |
| DBN | 67.01 | 66.67 | 67.45 | 67.16 | 60.46 | 79.33 | 68.01 |
| 40 | WSAN | 82.66 | 82.30 | 82.93 | 82.22 | 77.99 | 84.83 | 82.49 |
| SMoCo | 91.92 | 87.66 | 92.70 | 94.18 | 89.28 | 92.00 | 90.96 |
| 所提方法Proposed method | 97.54 | 97.49 | 97.63 | 97.97 | 97.94 | 98.00 | 97.43 |
| SJMMD | 78.15 | 73.08 | 81.3 | 84.15 | 67.63 | 84.65 | 78.16 |
| DBN | 67.75 | 64.93 | 65.00 | 68.67 | 61.88 | 80.77 | 68.54 |
| 50 | WSAN | 84.26 | 83.21 | 84.41 | 82.89 | 78.97 | 85.00 | 83.46 |
| SMoCo | 92.84 | 89.51 | 93.54 | 95.18 | 90.36 | 93.13 | 92.59 |
| 所提方法Proposed method | 97.95 | 98.12 | 98.00 | 99.02 | 97.84 | 99.34 | 98.04 |
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变工况下的准确率
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样本数量 Samples | 方法 Methods | 不同转速 Different speeds |
|---|
| A→B | A→C | B→C | B→A | C→A | C→B | 平均Average |
|---|
| SJMMD | 73.84 | 68.28 | 76.24 | 79.37 | 63.18 | 79.90 | 73.80 |
| DBN | 66.53 | 59.43 | 61.13 | 62.45 | 45.97 | 74.21 | 61.62 |
| 10 | WSAN | 78.31 | 78.00 | 79.59 | 79.15 | 75.14 | 82.34 | 78.76 |
| SMoCo | 89.65 | 85.22 | 90.9 | 91.39 | 87.20 | 90.77 | 89.52 |
| 所提方法Proposed method | 94.21 | 94.73 | 94.69 | 95.33 | 94.45 | 96.23 | 94.44 |
| SJMMD | 74.85 | 69.40 | 77.40 | 80.61 | 64.34 | 81.20 | 74.07 |
| DBN | 66.89 | 60.25 | 62.31 | 63.93 | 52.81 | 75.98 | 63.70 |
| 20 | WSAN | 79.63 | 78.78 | 80.63 | 79.91 | 76.28 | 83.12 | 79.73 |
| SMoCo | 90.08 | 86.32 | 91.48 | 92.55 | 87.73 | 91.35 | 89.25 |
| 所提方法Proposed method | 95.39 | 94.79 | 95.64 | 96.44 | 95.45 | 96.73 | 95.07 |
| SJMMD | 75.86 | 70.41 | 78.45 | 81.73 | 64.82 | 82.90 | 75.70 |
| DBN | 66.99 | 65.30 | 65.62 | 65.74 | 54.89 | 77.87 | 66.07 |
| 30 | WSAN | 81.55 | 81.43 | 81.82 | 81.15 | 77.57 | 83.61 | 81.69 |
| SMoCo | 91.40 | 87.07 | 92.18 | 93.27 | 88.52 | 91.60 | 90.01 |
| 所提方法Proposed method | 96.55 | 96.87 | 96.49 | 97.55 | 97.65 | 97.85 | 97.16 |
| SJMMD | 76.99 | 71.86 | 79.93 | 82.95 | 65.63 | 84.16 | 76.42 |
| DBN | 67.01 | 66.67 | 67.45 | 67.16 | 60.46 | 79.33 | 68.01 |
| 40 | WSAN | 82.66 | 82.30 | 82.93 | 82.22 | 77.99 | 84.83 | 82.49 |
| SMoCo | 91.92 | 87.66 | 92.70 | 94.18 | 89.28 | 92.00 | 90.96 |
| 所提方法Proposed method | 97.54 | 97.49 | 97.63 | 97.97 | 97.94 | 98.00 | 97.43 |
| SJMMD | 78.15 | 73.08 | 81.3 | 84.15 | 67.63 | 84.65 | 78.16 |
| DBN | 67.75 | 64.93 | 65.00 | 68.67 | 61.88 | 80.77 | 68.54 |
| 50 | WSAN | 84.26 | 83.21 | 84.41 | 82.89 | 78.97 | 85.00 | 83.46 |
| SMoCo | 92.84 | 89.51 | 93.54 | 95.18 | 90.36 | 93.13 | 92.59 |
| 所提方法Proposed method | 97.95 | 98.12 | 98.00 | 99.02 | 97.84 | 99.34 | 98.04 |
), ArticleFig(id=1241049295365918750, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.5, caption=
Ablation experiment results
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动态卷积 Dynamic convolutional | 域条件特征校正 Domain condition feature correction | 准确率 Accuracy/% | 提升 Improvement/% |
|---|
| × | × | 85.98 | — |
| √ | × | 89.20 | ↑3.22 |
| × | √ | 92.37 | ↑6.39 |
| √ | √ | 95.45 | ↑9.47 |
), ArticleFig(id=1241049295546273825, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=表5, caption=
消融试验结果
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动态卷积 Dynamic convolutional | 域条件特征校正 Domain condition feature correction | 准确率 Accuracy/% | 提升 Improvement/% |
|---|
| × | × | 85.98 | — |
| √ | × | 89.20 | ↑3.22 |
| × | √ | 92.37 | ↑6.39 |
| √ | √ | 95.45 | ↑9.47 |
), ArticleFig(id=1241049295672102947, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=EN, label=Tab.6, caption=
Accuracy under time-varying rotational speed
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| 方法Methods | 标签样本数量 Number of label samples |
|---|
| 10 | 20 | 30 | 40 | 50 |
|---|
| SJMMD | 68.15 | 70.32 | 73.78 | 78.58 | 79.45 |
| DBN | 58.54 | 59.98 | 67.85 | 68.74 | 73.87 |
| WSAN | 70.40 | 73.48 | 78.45 | 82.61 | 85.12 |
| SMoCo | 75.24 | 76.30 | 80.47 | 84.46 | 90.68 |
| 所提方法Proposed method | 80.67 | 86.11 | 88.46 | 91.32 | 93.45 |
), ArticleFig(id=1241049295827292202, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049260704190863, language=CN, label=表6, caption=
时变转速下准确率
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| 方法Methods | 标签样本数量 Number of label samples |
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| 10 | 20 | 30 | 40 | 50 |
|---|
| SJMMD | 68.15 | 70.32 | 73.78 | 78.58 | 79.45 |
| DBN | 58.54 | 59.98 | 67.85 | 68.74 | 73.87 |
| WSAN | 70.40 | 73.48 | 78.45 | 82.61 | 85.12 |
| SMoCo | 75.24 | 76.30 | 80.47 | 84.46 | 90.68 |
| 所提方法Proposed method | 80.67 | 86.11 | 88.46 | 91.32 | 93.45 |
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