Article(id=1228653358949531684, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228653350485422347, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2024.10.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1715097600000, receivedDateStr=2024-05-08, revisedDate=1722441600000, revisedDateStr=2024-08-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1770863388049, onlineDateStr=2026-02-12, pubDate=1730044800000, pubDateStr=2024-10-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770863388049, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770863388049, creator=13701087609, updateTime=1770863388049, updator=13701087609, issue=Issue{id=1228653350485422347, tenantId=1146029695717560320, journalId=1225147924628267009, year='2024', volume='37', issue='10', pageStart='1625', pageEnd='1802', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770863386031, creator=13701087609, updateTime=1770863862999, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228655351092936954, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228653350485422347, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228655351092936955, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228653350485422347, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1688, endPage=1697, ext={EN=ArticleExt(id=1228653359297658928, articleId=1228653358949531684, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=A data-driven dynamic load identification method based on time-delay neural networks, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The problem of load identification denotes identifying loads based on the measurement of structural responses,which is the inverse problem in structural dynamics. A load identification method based on time-delay neural network is proposed in this paper,and numerical examples based on simulation and experiments are provided to show that the method overperforms normal back-propagation neural network in accuracy of identification. Additionally,statistic pooling is introduced on the basis of the method,and it is proved that the method performs well in noisy environment compared with BP neural networks. based on the load identification methods mentioned above,a sensor placement optimization based on particle swarm optimization algorithm is proposed,and the optimal sensor placement is able to reduce the error of identification by 90% compared with the random sensor placements,meanwhile the minimum spacing of installation among sensors is also ensured during the optimization.
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载荷识别是指根据测量的结构响应重构结构载荷的问题,属于力学中的反问题。本文提出了一种基于时延神经网络的载荷识别方法,通过实验和仿真相结合的数值算例验证表明,这一方法相比于一般的反向传播神经网络具有更高的识别精度;在时延神经网络的基础上,引入了统计池化的思想,并与普通的神经网络载荷识别方法相比较,证明了该方法在不同强度的噪声环境下均具有良好的识别效果;基于上述载荷识别方法,提出了一种基于粒子群优化算法的传感器布局优化策略,相比于随机的传感器布局,优化后的传感器布局可以在考虑传感器安装间距的同时,将载荷识别误差降低90%以上,有效提高了载荷识别精度。
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, authorsList=王磊, 张昊宇, 胡举喜, 顾凯旋, 王振宇, 刘英良)}, authors=[Author(id=1228662192409604434, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=leiwang_beijing@buaa.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228662192472518996, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, authorId=1228662192409604434, language=EN, stringName=Lei WANG, firstName=Lei, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1National Key Laboratory of Strength and Structural Integrity,School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228662192522850645, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, authorId=1228662192409604434, language=CN, stringName=王磊, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1北京航空航天大学航空科学与工程学院强度与结构完整性全国重点实验室,北京 100191, bio={"content":"
王磊(1987—),男,博士,副教授。E-mail: leiwang_beijing@buaa.edu.cn。
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王磊(1987—),男,博士,副教授。E-mail: leiwang_beijing@buaa.edu.cn。
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2School of Naval Architecture,Ocean & Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228662192870977887, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, authorId=1228662192757731676, language=CN, stringName=胡举喜, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2上海交通大学船舶海洋与建筑工程学院,上海 200240, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228662192183112005, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, xref=2, ext=[AuthorCompanyExt(id=1228662192187306310, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, companyId=1228662192183112005, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3航空工业航宇救生装备有限公司试验部, 湖北 襄阳 441003, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228662192254415177, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, xref=3, ext=[AuthorCompanyExt(id=1228662192262803786, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, companyId=1228662192254415177, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4Marine Design & Research Institute of China,Shanghai,200011,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228662193479151982, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, authorId=1228662193294602603, language=CN, stringName=刘英良, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4中国船舶及海洋工程设计研究院,上海 200011, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228662192329912653, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, xref=4, ext=[AuthorCompanyExt(id=1228662192338301262, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, companyId=1228662192329912653, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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复合材料薄板外观及传感器布置, figureFileSmall=9j0d0kHLwaK01+OGBI9pEA==, figureFileBig=fPQZpoJMtLnU2EbrnvqHFA==, tableContent=null), ArticleFig(id=1228662194817134977, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.6, caption=
The finite element model of the composite thin plate, figureFileSmall=6DtFzSThznMDi0eJEyQsrw==, figureFileBig=lO+s0ilsm+FaD25OvPPr5g==, tableContent=null), ArticleFig(id=1228662194871660930, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 6, caption=
复合材料薄板的有限元模型, figureFileSmall=6DtFzSThznMDi0eJEyQsrw==, figureFileBig=lO+s0ilsm+FaD25OvPPr5g==, tableContent=null), ArticleFig(id=1228662194921992579, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.7, caption=
The structure of ANN, figureFileSmall=TLG7YSAhLlm8qMR6MrUOkg==, figureFileBig=i9xRt14ZPFPG/2uqrpwk0w==, tableContent=null), ArticleFig(id=1228662194980712836, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 7, caption=
神经网络结构, figureFileSmall=TLG7YSAhLlm8qMR6MrUOkg==, figureFileBig=i9xRt14ZPFPG/2uqrpwk0w==, tableContent=null), ArticleFig(id=1228662195056210309, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.8, caption=
The data of training sets in case 2, figureFileSmall=Ldn/3DITm3T+kRdqslU09Q==, figureFileBig=DLqvr5soV/3V7hJFDl+ATw==, tableContent=null), ArticleFig(id=1228662195114930566, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 8, caption=
工况2训练集数据, figureFileSmall=Ldn/3DITm3T+kRdqslU09Q==, figureFileBig=DLqvr5soV/3V7hJFDl+ATw==, tableContent=null), ArticleFig(id=1228662195177845127, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.9, caption=
Error of load identification with different steps of delay in TDNN system, figureFileSmall=md4ASa3HCAEGrzyNX4MJUg==, figureFileBig=b7nzATI+o+/uBkEk878YIw==, tableContent=null), ArticleFig(id=1228662195244953992, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 9, caption=
不同延迟步数下的载荷识别误差, figureFileSmall=md4ASa3HCAEGrzyNX4MJUg==, figureFileBig=b7nzATI+o+/uBkEk878YIw==, tableContent=null), ArticleFig(id=1228662198470373769, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.10, caption=
Comparison of absolute error with different steps of delay in TDNN system, figureFileSmall=jvYpy0/03WYTj993nOf35A==, figureFileBig=CcDRpPXhL4w4HYC5cHjpCA==, tableContent=null), ArticleFig(id=1228662198541676938, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 10, caption=
不同延迟步数下的载荷识别绝对误差对比, figureFileSmall=jvYpy0/03WYTj993nOf35A==, figureFileBig=CcDRpPXhL4w4HYC5cHjpCA==, tableContent=null), ArticleFig(id=1228662198608785803, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.11, caption=
Comparison of the results of load identification in noisy environment, figureFileSmall=nrW/YLQ5phMKEgXhUx/yRA==, figureFileBig=du3biVPuXtLcHss3r+rLNg==, tableContent=null), ArticleFig(id=1228662198663311756, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 11, caption=
噪声环境下的载荷识别效果对比, figureFileSmall=nrW/YLQ5phMKEgXhUx/yRA==, figureFileBig=du3biVPuXtLcHss3r+rLNg==, tableContent=null), ArticleFig(id=1228662198747197837, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.12, caption=
The result of load identification using TDNN based on statistic pooling considering 10% Gaussian noise, figureFileSmall=54x7C79IigGXFCQd0PuHHg==, figureFileBig=NHAC9uNealKKJg9ladur9w==, tableContent=null), ArticleFig(id=1228662198801723790, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图12, caption=
10%噪声下基于统计池化的TDNN载荷识别结果, figureFileSmall=54x7C79IigGXFCQd0PuHHg==, figureFileBig=NHAC9uNealKKJg9ladur9w==, tableContent=null), ArticleFig(id=1228662198860444047, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.13, caption=
The trending of the optimal of objective function during the iterations, figureFileSmall=gHjhRHnDO0XEPRTdYQ0mqA==, figureFileBig=JyT68iEY9e0N60xMRfUynw==, tableContent=null), ArticleFig(id=1228662198919164304, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 13, caption=
迭代过程中目标函数最优值的变化趋势, figureFileSmall=gHjhRHnDO0XEPRTdYQ0mqA==, figureFileBig=JyT68iEY9e0N60xMRfUynw==, tableContent=null), ArticleFig(id=1228662198969495953, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.14, caption=
The optimal value of the objective function with different conditions, figureFileSmall=4Sp+cP0ojzO2Pb4XYOAeaQ==, figureFileBig=7zhW+RBw6VOPe9udlEmUZA==, tableContent=null), ArticleFig(id=1228662199024021906, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 14, caption=
不同条件下优化结果的目标函数最优值, figureFileSmall=4Sp+cP0ojzO2Pb4XYOAeaQ==, figureFileBig=7zhW+RBw6VOPe9udlEmUZA==, tableContent=null), ArticleFig(id=1228662199082742163, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.15, caption=
The optimal sensor placement, figureFileSmall=j8qGSFCeHbZ3gq2HLR+stA==, figureFileBig=5oZiDnbLoZyTlTW3n5kyMw==, tableContent=null), ArticleFig(id=1228662199133073812, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图 15, caption=
最优传感器布局示意图, figureFileSmall=j8qGSFCeHbZ3gq2HLR+stA==, figureFileBig=5oZiDnbLoZyTlTW3n5kyMw==, tableContent=null), ArticleFig(id=1228662199183405461, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Fig.A1, caption=
The data of the measurement in experiments, figureFileSmall=FrdZDQdLLfnRZO8Y6hOuQA==, figureFileBig=z0moAW6DqVJY1rPyMAMFlA==, tableContent=null), ArticleFig(id=1228662199237931414, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=图A1, caption=
试验实测数据, figureFileSmall=FrdZDQdLLfnRZO8Y6hOuQA==, figureFileBig=z0moAW6DqVJY1rPyMAMFlA==, tableContent=null), ArticleFig(id=1228662199296651671, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Tab.1, caption=
Material properties of the structure
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg·m‒3) | 弹性模量/MPa | 泊松比 |
|---|
| EX | EY | EZ |
|---|
| 1 | 1550 | 76800 | 71400 | 71400 | 0.32 |
| 2 | 1550 | 30720 | 28560 | 28560 | 0.32 |
), ArticleFig(id=1228662199355371928, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=表1, caption=
结构的材料属性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg·m‒3) | 弹性模量/MPa | 泊松比 |
|---|
| EX | EY | EZ |
|---|
| 1 | 1550 | 76800 | 71400 | 71400 | 0.32 |
| 2 | 1550 | 30720 | 28560 | 28560 | 0.32 |
), ArticleFig(id=1228662199414092185, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Tab.2, caption=
Error of load identification with different steps of delay in TDNN system
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时延步数 | 误差/% |
|---|
| 工况1 | 工况2 |
|---|
| 0 | 5.173 | 3.857 |
| 1 | 4.743 | 2.227 |
| 2 | 2.397 | 1.585 |
| 3 | 1.899 | 1.605 |
| 4 | 3.930 | 2.239 |
| 5 | 1.924 | 2.194 |
| 6 | 2.050 | 1.137 |
| 7 | 2.164 | 0.445 |
| 8 | 4.560 | 0.473 |
| 9 | 2.514 | 1.567 |
| 10 | 4.256 | 1.016 |
| 11 | 1.388 | 1.006 |
| 12 | 3.356 | 0.434 |
| 13 | 3.135 | 1.132 |
| 14 | 3.608 | 0.728 |
| 15 | 3.220 | 0.495 |
| 16 | 4.424 | 0.787 |
| 17 | 3.503 | 0.601 |
| 18 | 3.481 | 0.547 |
| 19 | 3.549 | 0.800 |
| 20 | 3.749 | 0.743 |
), ArticleFig(id=1228662199489589658, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=表2, caption=
不同延迟步数下的载荷识别误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时延步数 | 误差/% |
|---|
| 工况1 | 工况2 |
|---|
| 0 | 5.173 | 3.857 |
| 1 | 4.743 | 2.227 |
| 2 | 2.397 | 1.585 |
| 3 | 1.899 | 1.605 |
| 4 | 3.930 | 2.239 |
| 5 | 1.924 | 2.194 |
| 6 | 2.050 | 1.137 |
| 7 | 2.164 | 0.445 |
| 8 | 4.560 | 0.473 |
| 9 | 2.514 | 1.567 |
| 10 | 4.256 | 1.016 |
| 11 | 1.388 | 1.006 |
| 12 | 3.356 | 0.434 |
| 13 | 3.135 | 1.132 |
| 14 | 3.608 | 0.728 |
| 15 | 3.220 | 0.495 |
| 16 | 4.424 | 0.787 |
| 17 | 3.503 | 0.601 |
| 18 | 3.481 | 0.547 |
| 19 | 3.549 | 0.800 |
| 20 | 3.749 | 0.743 |
), ArticleFig(id=1228662199548309915, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=EN, label=Tab.3, caption=
Relative error of load identification based on different convolutional kernel
, figureFileSmall=null, figureFileBig=null, tableContent=
| 卷积核大小 | 卷积核 | 相对误差/% |
|---|
| 0%噪声 | 1%噪声 | 3%噪声 | 5%噪声 | 10%噪声 |
|---|
| 无卷积核(一般BP神经网络) | - | 3.857 | 5.363 | 6.204 | 8.785 | 24.751 |
| 5 | [0.2,0.2,0.2,0.2,0.2] | 3.299 | 3.499 | 4.368 | 5.706 | 7.281 |
| 5 | [0.1,0.2,0.4,0.2,0.1] | 3.048 | 4.238 | 5.075 | 6.163 | 7.089 |
| 7 | [0.143,0.143,0.143,0.143,0.143,0.143,0.143] | 3.225 | 3.275 | 3.253 | 4.182 | 5.754 |
| 7 | [0.05,0.1,0.15,0.4,0.15,0.1,0.05] | 3.654 | 3.713 | 4.604 | 5.195 | 7.164 |
), ArticleFig(id=1228662199611224476, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228653358949531684, language=CN, label=表3, caption=
使用不同卷积核的载荷识别相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 卷积核大小 | 卷积核 | 相对误差/% |
|---|
| 0%噪声 | 1%噪声 | 3%噪声 | 5%噪声 | 10%噪声 |
|---|
| 无卷积核(一般BP神经网络) | - | 3.857 | 5.363 | 6.204 | 8.785 | 24.751 |
| 5 | [0.2,0.2,0.2,0.2,0.2] | 3.299 | 3.499 | 4.368 | 5.706 | 7.281 |
| 5 | [0.1,0.2,0.4,0.2,0.1] | 3.048 | 4.238 | 5.075 | 6.163 | 7.089 |
| 7 | [0.143,0.143,0.143,0.143,0.143,0.143,0.143] | 3.225 | 3.275 | 3.253 | 4.182 | 5.754 |
| 7 | [0.05,0.1,0.15,0.4,0.15,0.1,0.05] | 3.654 | 3.713 | 4.604 | 5.195 | 7.164 |
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