Article(id=1228654096694051489, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228654089437901468, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.12.018, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1672070400000, receivedDateStr=2022-12-27, revisedDate=1677772800000, revisedDateStr=2023-03-03, acceptedDate=null, acceptedDateStr=null, onlineDate=1770863563941, onlineDateStr=2026-02-12, pubDate=1735315200000, pubDateStr=2024-12-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770863563941, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770863563941, creator=13701087609, updateTime=1770863563941, updator=13701087609, issue=Issue{id=1228654089437901468, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='12', pageStart='1993', pageEnd='2167', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770863562211, creator=13701087609, updateTime=1770863940325, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228655675413299456, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228654089437901468, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228655675413299457, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228654089437901468, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2158, endPage=2167, ext={EN=ArticleExt(id=1228654097767793324, articleId=1228654096694051489, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Rolling bearing fault diagnosis method based on Markov transition field and graph attention network, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Aiming at the problem that the recognition accuracy of the model is not high due to the complex and variable engineering environment,a rolling bearing fault diagnosis model integrating Markov transition field and graph attention networks (MTF-GAT) is proposed in this paper. Using the advantage of MTF to retain the time correlation of the signal is applied to transform one-dimensional signals into two-dimensional feature maps,and the nodes and edges of the graph are defined. The graph attention layer can adaptively assign different weights to adjacent nodes to improve the ability of the model to capture useful fault features,and the abstract information of the graph is further extracted through the deep convolution module. By simulating the actual engineering environment,the various fault signals are input into the trained MTF-GAT model for fault diagnosis,and the model is verified by experiments on two data sets. The results show that the proposed model in this paper can accurately complete the task of fault classification in a variety of environments. Compared with other deep learning models,the MTF-GAT model has better recognition accuracy and generalization performance.
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针对实际工程环境复杂多变而导致模型识别准确率不高的问题,提出了一种融合马尔科夫转移场和图注意力网络(Markov transition field and graph attention networks,MTF-GAT)的滚动轴承故障诊断模型。利用MTF保留信号时间相关性的优点,将一维信号转换为二维特征图并定义图的节点和边;利用图注意力层可自适应地对邻近节点分配不同权重的特点,提高模型捕获有用故障特征的能力,并采用深层卷积模块进一步提取图的抽象信息;通过模拟实际工程环境,将各类故障信号输入到训练好的MTF-GAT模型进行故障诊断,并在两个数据集上进行试验验证。结果表明,本文所提出的模型在多种环境下均能准确地完成故障分类任务,相较于其他常用的深度学习模型,MTF-GAT模型具有更好的识别精度和泛化性能。
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1School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1兰州理工大学机电工程学院,甘肃 兰州 730050
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雷春丽(1977—),女,博士,教授。 E-mail: lclyq2004@163.com。
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1School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1兰州理工大学机电工程学院,甘肃 兰州 730050
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1School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1兰州理工大学机电工程学院,甘肃 兰州 730050
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1School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1School of Mechanical and Electronical Engineering,Lanzhou University of Technology,Lanzhou 730050,China
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1兰州理工大学机电工程学院,甘肃 兰州 730050
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52: 123-137., articleTitle=Intelligent diagnostic and prognostic method based on multitask learning for industrial equipment, refAbstract=null)], funds=[Fund(id=1228654128000336655, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, awardId=51465035, language=CN, fundingSource=国家自然科学基金资助项目(51465035), fundOrder=null, country=null), Fund(id=1228654128071639826, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, awardId=20JR5RA466, language=CN, fundingSource=甘肃省自然科学基金资助项目(20JR5RA466), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228654119783694814, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, xref=1, ext=[AuthorCompanyExt(id=1228654119787889119, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, companyId=1228654119783694814, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2Key Laboratory of Digital Manufacturing Technology and Application,Ministry of Education,Lanzhou University of Technology,Lanzhou 730050,China), AuthorCompanyExt(id=1228654119905329640, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, companyId=1228654119892746726, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2兰州理工大学数字制造技术与应用省部共建教育部重点实验室,甘肃 兰州 730050)])], figs=[ArticleFig(id=1228654123462099571, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.1, caption=
Graph attention layer, figureFileSmall=XQeTKajjTxVr0fq41LNCRg==, figureFileBig=NfNRsVt/z2jaeRnR3yTCXg==, tableContent=null), ArticleFig(id=1228654123520819831, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图1, caption=
图注意力层, figureFileSmall=XQeTKajjTxVr0fq41LNCRg==, figureFileBig=NfNRsVt/z2jaeRnR3yTCXg==, tableContent=null), ArticleFig(id=1228654123726340735, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.2, caption=
Multi-head self-attention mechanism, figureFileSmall=7omPui+XHttP5rJAaDTk2w==, figureFileBig=GPy6LBfwUSRGwvDaHB1kIA==, tableContent=null), ArticleFig(id=1228654123856364167, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图2, caption=
多头自注意力机制, figureFileSmall=7omPui+XHttP5rJAaDTk2w==, figureFileBig=GPy6LBfwUSRGwvDaHB1kIA==, tableContent=null), ArticleFig(id=1228654123936055949, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.3, caption=
MTF-GAT fault diagnosis model, figureFileSmall=wis4AsbPIwlTOMLhrqnWUA==, figureFileBig=pijWmld8u6wMxBzpqQXF7Q==, tableContent=null), ArticleFig(id=1228654124003164816, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图3, caption=
MTF-GAT故障诊断模型, figureFileSmall=wis4AsbPIwlTOMLhrqnWUA==, figureFileBig=pijWmld8u6wMxBzpqQXF7Q==, tableContent=null), ArticleFig(id=1228654124095439508, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.4, caption=
Overlapped sampling operation diagram, figureFileSmall=JorGCYy2IAaI6CLPmpuj8g==, figureFileBig=9SlgfrtWSm9I5uh4XIvE5g==, tableContent=null), ArticleFig(id=1228654124162548378, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图4, caption=
重叠采样操作示意图, figureFileSmall=JorGCYy2IAaI6CLPmpuj8g==, figureFileBig=9SlgfrtWSm9I5uh4XIvE5g==, tableContent=null), ArticleFig(id=1228654124217074333, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.5, caption=
Mechanical fault simulation test bench, figureFileSmall=p2pf5rpYAYeToBOIkYZr9A==, figureFileBig=+6sS61tGi/5hk2ssoYBYTQ==, tableContent=null), ArticleFig(id=1228654124292571809, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图5, caption=
机械故障模拟试验台, figureFileSmall=p2pf5rpYAYeToBOIkYZr9A==, figureFileBig=+6sS61tGi/5hk2ssoYBYTQ==, tableContent=null), ArticleFig(id=1228654124372263592, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.6, caption=
ER-16K rolling bearing fault location, figureFileSmall=D2Wzk6JLg2iyUrnPSQUDIg==, figureFileBig=bFnQw8HGO79DVqPzdyiPEA==, tableContent=null), ArticleFig(id=1228654124464538283, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图6, caption=
ER-16K滚动轴承故障部位, figureFileSmall=D2Wzk6JLg2iyUrnPSQUDIg==, figureFileBig=bFnQw8HGO79DVqPzdyiPEA==, tableContent=null), ArticleFig(id=1228654124556812973, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.7, caption=
XJTU-SY rolling bearing accelerated life test bench, figureFileSmall=LoktwHfDiPQrLfDf9CSfsw==, figureFileBig=N+FDptV1/6MHr3uKsASnEQ==, tableContent=null), ArticleFig(id=1228654124644893361, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图7, caption=
XJTU-SY滚动轴承加速寿命试验台, figureFileSmall=LoktwHfDiPQrLfDf9CSfsw==, figureFileBig=N+FDptV1/6MHr3uKsASnEQ==, tableContent=null), ArticleFig(id=1228654124854608566, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.8, caption=
Confusion matrix of fault classification results of different models, figureFileSmall=IoTlFssh7ACS8QmtNVIuGw==, figureFileBig=Wk4QNxn9aWoQ4IFTJvFyYA==, tableContent=null), ArticleFig(id=1228654124972049083, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图8, caption=
不同模型故障分类结果的混淆矩阵, figureFileSmall=IoTlFssh7ACS8QmtNVIuGw==, figureFileBig=Wk4QNxn9aWoQ4IFTJvFyYA==, tableContent=null), ArticleFig(id=1228654125064323777, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.9, caption=
Diagnostic effect histogram of different models under small samples, figureFileSmall=xrA+J59roc71xKTHv3FJUw==, figureFileBig=wE08hdjUB1PywIPwb4e2AQ==, tableContent=null), ArticleFig(id=1228654125139821254, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图9, caption=
小样本下不同模型的识别效果柱状图, figureFileSmall=xrA+J59roc71xKTHv3FJUw==, figureFileBig=wE08hdjUB1PywIPwb4e2AQ==, tableContent=null), ArticleFig(id=1228654125219513032, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.10, caption=
Box diagram of diagnostic effect of different models under small sample, figureFileSmall=MHtffjiRG4ihjBpEX6DXtg==, figureFileBig=ofCOgbIBag06009BsOUcCA==, tableContent=null), ArticleFig(id=1228654125303399116, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图10, caption=
小样本下不同模型的识别效果箱型图, figureFileSmall=MHtffjiRG4ihjBpEX6DXtg==, figureFileBig=ofCOgbIBag06009BsOUcCA==, tableContent=null), ArticleFig(id=1228654125408256723, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Fig.11, caption=
Early fault identification effect of different models, figureFileSmall=nu35pr+NFSU2qRyGj5xSEA==, figureFileBig=07nkxqaYtL8QYR8qPOK8EA==, tableContent=null), ArticleFig(id=1228654125492142804, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=图11, caption=
不同模型的早期故障识别效果, figureFileSmall=nu35pr+NFSU2qRyGj5xSEA==, figureFileBig=07nkxqaYtL8QYR8qPOK8EA==, tableContent=null), ArticleFig(id=1228654125584417495, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.1, caption=
Optimal parameters of MTF-GAT model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名 | 超参数 |
|---|
| MTF图像转换层 | 输入大小为2048,输出大小为[128,128] |
| 模型输入层 | 输入大小为[128,128] |
| GAT | 注意力头数为4,输入节点特征维度为16 |
| 卷积层1 | 卷积核数目为64,大小为[5,5],步长为[1,1] |
| 最大池化层1 | 池化核大小为[2,2] |
| 卷积层2 | 卷积核数目为128,大小为[5,5],步长为[1,1] |
| 最大池化层2 | 池化核大小为[2,2] |
| 全局平均池化层 | — |
| Dropout层 | Dropout率大小为0.5 |
| Softmax层 | — |
), ArticleFig(id=1228654125668303580, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表1, caption=
MTF-GAT模型的最优参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名 | 超参数 |
|---|
| MTF图像转换层 | 输入大小为2048,输出大小为[128,128] |
| 模型输入层 | 输入大小为[128,128] |
| GAT | 注意力头数为4,输入节点特征维度为16 |
| 卷积层1 | 卷积核数目为64,大小为[5,5],步长为[1,1] |
| 最大池化层1 | 池化核大小为[2,2] |
| 卷积层2 | 卷积核数目为128,大小为[5,5],步长为[1,1] |
| 最大池化层2 | 池化核大小为[2,2] |
| 全局平均池化层 | — |
| Dropout层 | Dropout率大小为0.5 |
| Softmax层 | — |
), ArticleFig(id=1228654125886407392, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.2, caption=
LDK-UER204 rolling bearing parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 数值 | 参数名称 | 数值 |
|---|
| 额定动载荷/N | 12820 | 轴承中径/mm | 34.55 |
| 接触角/(°) | 0 | 滚动体个数 | 8 |
| 额定静载荷/kN | 6.65 | 滚动体直径/mm | 7.92 |
), ArticleFig(id=1228654126087733990, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表2, caption=
LDK-UER204滚动轴承参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 数值 | 参数名称 | 数值 |
|---|
| 额定动载荷/N | 12820 | 轴承中径/mm | 34.55 |
| 接触角/(°) | 0 | 滚动体个数 | 8 |
| 额定静载荷/kN | 6.65 | 滚动体直径/mm | 7.92 |
), ArticleFig(id=1228654126163231464, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.3, caption=
Diagnostic effect of different input node feature dimensions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输入节点特征维度 | 评价指标 |
|---|
| 识别准确率/% | 四分位数差/% | 标准差/% |
|---|
| 2 | 99.30 | 0.42 | 0.25 |
| 4 | 99.33 | 0.29 | 0.21 |
| 8 | 99.43 | 0.30 | 0.18 |
| 16 | 99.72 | 0.16 | 0.15 |
| 24 | 99.62 | 0.29 | 0.25 |
), ArticleFig(id=1228654126255506156, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表3, caption=
不同输入节点特征维度的诊断效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 输入节点特征维度 | 评价指标 |
|---|
| 识别准确率/% | 四分位数差/% | 标准差/% |
|---|
| 2 | 99.30 | 0.42 | 0.25 |
| 4 | 99.33 | 0.29 | 0.21 |
| 8 | 99.43 | 0.30 | 0.18 |
| 16 | 99.72 | 0.16 | 0.15 |
| 24 | 99.62 | 0.29 | 0.25 |
), ArticleFig(id=1228654126322615024, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.4, caption=
Diagnostic effects of different models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 评价指标 |
|---|
| 识别准确率/% | 四分位数差/% | 标准差/% |
|---|
| MTF-GAT | 99.50 | 0.26 | 0.13 |
| MTF-CNN1 | 88.67 | 1.67 | 1.47 |
| MTF-CNN2 | 77.47 | 3.04 | 2.90 |
| WDCNN | 98.33 | 0.63 | 0.38 |
), ArticleFig(id=1228654126410695411, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表4, caption=
不同模型的诊断效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 评价指标 |
|---|
| 识别准确率/% | 四分位数差/% | 标准差/% |
|---|
| MTF-GAT | 99.50 | 0.26 | 0.13 |
| MTF-CNN1 | 88.67 | 1.67 | 1.47 |
| MTF-CNN2 | 77.47 | 3.04 | 2.90 |
| WDCNN | 98.33 | 0.63 | 0.38 |
), ArticleFig(id=1228654127358608118, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.5, caption=
Fault identification effect of different models under variable working conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验工况 | 识别准确率/% |
|---|
| A | B | C | D | E |
|---|
| 平均值 | 99.27 | 98.33 | 98.36 | 94.37 | 96.84 |
| F1→F2 | 99.60 | 98.57 | 97.93 | 97.17 | 97.93 |
| F1→F3 | 99.55 | 97.77 | 98.28 | 87.22 | 96.65 |
| F2→F1 | 99.38 | 98.55 | 98.35 | 92.80 | 97.63 |
| F2→F3 | 98.73 | 98.30 | 98.55 | 98.65 | 98.63 |
| F3→F1 | 99.42 | 98.35 | 98.48 | 91.82 | 91.63 |
| F3→F2 | 98.94 | 98.42 | 98.58 | 98.55 | 98.55 |
), ArticleFig(id=1228654127492825852, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表5, caption=
不同模型在变工况下的故障识别效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验工况 | 识别准确率/% |
|---|
| A | B | C | D | E |
|---|
| 平均值 | 99.27 | 98.33 | 98.36 | 94.37 | 96.84 |
| F1→F2 | 99.60 | 98.57 | 97.93 | 97.17 | 97.93 |
| F1→F3 | 99.55 | 97.77 | 98.28 | 87.22 | 96.65 |
| F2→F1 | 99.38 | 98.55 | 98.35 | 92.80 | 97.63 |
| F2→F3 | 98.73 | 98.30 | 98.55 | 98.65 | 98.63 |
| F3→F1 | 99.42 | 98.35 | 98.48 | 91.82 | 91.63 |
| F3→F2 | 98.94 | 98.42 | 98.58 | 98.55 | 98.55 |
), ArticleFig(id=1228654127580906240, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.6, caption=
Early fault sample distribution of XJTU-SY data set[23]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障类型 | 轴承编号 | 初始故障点/min | 试验总时长/min | 转速/(r⋅min-1) |
|---|
| 外圈 | Bearing1_1 | 77 | 123 | 2100 |
| 混合故障 | Bearing 1_5 | 33 | 52 | 2100 |
| 内圈 | Bearing 2_1 | 454 | 491 | 2250 |
| 保持架 | Bearing 2_3 | 325 | 533 | 2250 |
), ArticleFig(id=1228654127710929666, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表6, caption=
XJTU-SY数据集早期故障样本分布[23]
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| 故障类型 | 轴承编号 | 初始故障点/min | 试验总时长/min | 转速/(r⋅min-1) |
|---|
| 外圈 | Bearing1_1 | 77 | 123 | 2100 |
| 混合故障 | Bearing 1_5 | 33 | 52 | 2100 |
| 内圈 | Bearing 2_1 | 454 | 491 | 2250 |
| 保持架 | Bearing 2_3 | 325 | 533 | 2250 |
), ArticleFig(id=1228654127782232837, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=EN, label=Tab.7, caption=
Diagnosis accuracy of different models for various faults
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| 模型 | 各类故障识别准确率/% |
|---|
| 外圈 | 混合故障 | 内圈 | 保持架 | 总识别准确率 |
|---|
| A | 100 | 100 | 94.38 | 98.54 | 98.23 |
| B | 98.70 | 100 | 89.67 | 97.15 | 96.38 |
| C | 100 | 100 | 92.68 | 98.12 | 97.70 |
| F | 100 | 100 | 92.00 | 98.00 | 97.50 |
| G | 97.53 | 100 | 80.73 | 94.34 | 93.15 |
), ArticleFig(id=1228654127878701832, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228654096694051489, language=CN, label=表7, caption=
不同模型对各类故障的识别准确率
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| 模型 | 各类故障识别准确率/% |
|---|
| 外圈 | 混合故障 | 内圈 | 保持架 | 总识别准确率 |
|---|
| A | 100 | 100 | 94.38 | 98.54 | 98.23 |
| B | 98.70 | 100 | 89.67 | 97.15 | 96.38 |
| C | 100 | 100 | 92.68 | 98.12 | 97.70 |
| F | 100 | 100 | 92.00 | 98.00 | 97.50 |
| G | 97.53 | 100 | 80.73 | 94.34 | 93.15 |
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