Article(id=1236596130335740504, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236596124832821317, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202412263, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1733673600000, receivedDateStr=2024-12-09, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772757092317, onlineDateStr=2026-03-06, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772757092317, onlineIssueDateStr=2026-03-06, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772757092317, creator=13701087609, updateTime=1772757092317, updator=13701087609, issue=Issue{id=1236596124832821317, tenantId=1146029695717560320, journalId=1210938733613449225, year='2025', volume='54', issue='5', pageStart='1', pageEnd='162', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772757091004, creator=13701087609, updateTime=1772757664851, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236598531780309922, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236596124832821317, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236598531780309923, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1236596124832821317, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=122, endPage=131, ext={EN=ArticleExt(id=1236596130633536097, articleId=1236596130335740504, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Vibration amplitude prediction method for turbine rotor sliding bearing based on YOLOv8 optimized attention mechanism, columnId=1211002405299294959, journalTitle=Thermal Power Generation, columnName=Thermal energy science research, runingTitle=null, highlight=null, articleAbstract=
The early faults of sliding bearings are highly concealed. To accurately predict their vibration amplitude, a deep learning model incorporating a YOLOv8-optimized CBAM attention mechanism is proposed. The CBAM module is embedded between the Backbone and Neck to enhance the model’s focus on critical vibration features. Additionally, an improved complete intersection over union loss function is employed to enhance object detection accuracy. Considering the nonlinear and non-stationary characteristics of vibration data, the empirical mode decomposition (EMD) method is integrated into the model to improve the accuracy of vibration state prediction. The experimental results show that, on the 600 MW steam turbine operation dataset, this method improves the detection accuracy by 2.85 percentage points and 8.50 percentage points compared with that of the conventional YOLOv8 and YOLOv7, respectively. Moreover, the root mean square error (RMSE) is reduces, and the mean absolute error (MAE) decreases. Furthermore, in high-noise environments, the model’s error fluctuation reduces by 30% compared with that of the conventional methods, demonstrating stronger generalization ability and stability.
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滑动轴承的早期故障具有隐秘性,为了准确预测其振动幅值,提出了一种结合YOLOv8优化的CBAM(convolutional block attention module)的深度学习模型,在Backbone和Neck之间嵌入CBAM模块以提升模型对重要振动特征的关注度,同时采用改进的完全交并比损失函数,提高目标检测精度。同时,考虑到振动数据的非线性、非稳态特性,在模型中添加经验模态分解(empirical mode decomposition,EMD)方法对振动状态数据进行预测,以提高预测的准确性。结果表明:该方法在600 MW汽轮机运行数据集上相较于传统YOLOv8和YOLOv7,在目标检测准确率上分别提升2.85百分点和8.50百分点,均方根误差和平均绝对误差均有所减少;此外,在高噪声环境下,该模型的误差波动较传统方法降低30%,表现出更强的泛化能力和稳定性。
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YOLOv8模型结构, figureFileSmall=+j7qKd3xHBilTlMWl6qHLQ==, figureFileBig=CqzGlA7owWHrPw8Gb0pb1Q==, tableContent=null), ArticleFig(id=1236610616916504936, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.2, caption=
Frequency domain and time domain of the turbine vibration amplitude, figureFileSmall=KWXSkQlMf/RG5K+j1ghTLw==, figureFileBig=dFA3ZJIttapVKNfIpe89WQ==, tableContent=null), ArticleFig(id=1236610617017168237, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图2, caption=
汽轮机振幅频域与时域, figureFileSmall=KWXSkQlMf/RG5K+j1ghTLw==, figureFileBig=dFA3ZJIttapVKNfIpe89WQ==, tableContent=null), ArticleFig(id=1236610617134608756, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.3, caption=
The smooth processed waveforms of power plant signal, figureFileSmall=fZ3X7gXmMmkMoITMQVTUuw==, figureFileBig=rBA2zbsvFJ8ZFsVA6SaKAg==, tableContent=null), ArticleFig(id=1236610617218494845, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图3, caption=
电厂信号平滑处理后波形, figureFileSmall=fZ3X7gXmMmkMoITMQVTUuw==, figureFileBig=rBA2zbsvFJ8ZFsVA6SaKAg==, tableContent=null), ArticleFig(id=1236610617327546755, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.4, caption=
The empirical modal decomposition result of power plant signals, figureFileSmall=LADTNa5zcm6kXq+Welrokw==, figureFileBig=/OM17qwxruOlD2CDwGR9MQ==, tableContent=null), ArticleFig(id=1236610617465958794, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图4, caption=
电厂信号经验模态分解结果, figureFileSmall=LADTNa5zcm6kXq+Welrokw==, figureFileBig=/OM17qwxruOlD2CDwGR9MQ==, tableContent=null), ArticleFig(id=1236610617558233489, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.5, caption=
The spectrum of vibration signal, figureFileSmall=iuft1iX1i/jig/VyB/23Pw==, figureFileBig=zH/qClvhf8XhHZfsqy04ng==, tableContent=null), ArticleFig(id=1236610617667285398, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图5, caption=
振动信号频谱, figureFileSmall=iuft1iX1i/jig/VyB/23Pw==, figureFileBig=zH/qClvhf8XhHZfsqy04ng==, tableContent=null), ArticleFig(id=1236610617759560089, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.6, caption=
The model diagnostic process, figureFileSmall=xP709cu2Ms64mHyTHFsJkQ==, figureFileBig=wFLh3ZxeJG1bSyzMzKrAVQ==, tableContent=null), ArticleFig(id=1236610617868612000, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图6, caption=
模型诊断流程, figureFileSmall=xP709cu2Ms64mHyTHFsJkQ==, figureFileBig=wFLh3ZxeJG1bSyzMzKrAVQ==, tableContent=null), ArticleFig(id=1236610617994441127, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.7, caption=
Convergence curves of model training, figureFileSmall=SM9s4Dw2jVrkugF4Bz9elw==, figureFileBig=OAjYZ3TFEWJownL9tyou0A==, tableContent=null), ArticleFig(id=1236610618132853169, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图7, caption=
模型训练收敛曲线, figureFileSmall=SM9s4Dw2jVrkugF4Bz9elw==, figureFileBig=OAjYZ3TFEWJownL9tyou0A==, tableContent=null), ArticleFig(id=1236610618359345593, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.8, caption=
The average prediction accuracy of different models, figureFileSmall=bOoh3bu34i1YyJIW+e2MvA==, figureFileBig=Jm+N3o0wKX1PXyCEfZTWPA==, tableContent=null), ArticleFig(id=1236610618443231680, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图8, caption=
不同YOLO模型平均预测精度比较, figureFileSmall=bOoh3bu34i1YyJIW+e2MvA==, figureFileBig=Jm+N3o0wKX1PXyCEfZTWPA==, tableContent=null), ArticleFig(id=1236610618527117766, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.9, caption=
The accuracy of different models under half-precision optimization, figureFileSmall=inQR3vpkMDFsjHjJO2mRIw==, figureFileBig=+u6dO0LlILBp79TmrVCHsA==, tableContent=null), ArticleFig(id=1236610618606809548, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图9, caption=
半精度优化下不同模型的精度比较, figureFileSmall=inQR3vpkMDFsjHjJO2mRIw==, figureFileBig=+u6dO0LlILBp79TmrVCHsA==, tableContent=null), ArticleFig(id=1236610618707472848, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.10, caption=
Residuals histogram of model experimental results, figureFileSmall=CRlBJu/n4HZgKGh5lMyRUw==, figureFileBig=WJY4hcMxW+I8FPckM12LTw==, tableContent=null), ArticleFig(id=1236610618803941845, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图10, caption=
模型实验结果残差直方图, figureFileSmall=CRlBJu/n4HZgKGh5lMyRUw==, figureFileBig=WJY4hcMxW+I8FPckM12LTw==, tableContent=null), ArticleFig(id=1236610618900410845, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Fig.11, caption=
The confusion matrices with attention mechanism, figureFileSmall=IT0GPlp0MQznMkPf3Xsn3w==, figureFileBig=K/MHuUyTwZNV7K5K3zKGAA==, tableContent=null), ArticleFig(id=1236610619038822881, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=图11, caption=
添加注意机制的混淆矩阵比较, figureFileSmall=IT0GPlp0MQznMkPf3Xsn3w==, figureFileBig=K/MHuUyTwZNV7K5K3zKGAA==, tableContent=null), ArticleFig(id=1236610619152069094, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=EN, label=Tab.1, caption=
The accuracy and mAP50-95/% of various models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | Pre/% | mAP50-95/% |
|---|
| CBAM-YOLOv8 | 93.96 | 53.5 |
| YOLOv8 | 91.11 | 55.0 |
| YOLOv7 | 85.46 | 52.0 |
| YOLOv5-6.0-7.0 | 89.00 | 50.0 |
), ArticleFig(id=1236610619282092524, tenantId=1146029695717560320, journalId=1210938733613449225, articleId=1236596130335740504, language=CN, label=表1, caption=
各类模型准确性和mAP50-95/%比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | Pre/% | mAP50-95/% |
|---|
| CBAM-YOLOv8 | 93.96 | 53.5 |
| YOLOv8 | 91.11 | 55.0 |
| YOLOv7 | 85.46 | 52.0 |
| YOLOv5-6.0-7.0 | 89.00 | 50.0 |
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