Structural damage assessment using improved Dempster-Shafer data fusion algorithm

在线阅读 下载PDF 导出详情
摘要 Asanefficienttoolinhandlinguncertainissues,Dempster-Shaferevidencetheoryhasbeenincreasinglyusedinstructuralhealthmonitoringanddamagedetection.Inapplications,however,Dempster-Shaferevidencetheorysometimesleadstocounter-intuitiveresults.Inthisstudy,anewfusionalgorithmofevidencetheoryisputforwardtoaddressvariouscounter-intuitiveproblemsandmanagethereliabilitydifferenceoftheevidence.Theproposedalgorithmcomprisesthefollowingaspects:(1)Dempster’scombinationruleisgeneralizedbyintroducingtheconceptofevidenceullage.ThenewruleallowsclassicalDempster’sruleandcanresolvecounter-intuitiveproblemscausebyevidenceconflictandevidencecompatibility;(2)areliabilityassessingmethodbasedonaprioriandposteriorknowledgeisproposed.Comparedwithconventionalreliabilityassessment,theproposedmethodcanreflecttheactualevidencereliabilitiesandcanefficientlyreducedecisionrisk.Numericalexamplesconfirmthevalidityandutilityoftheproposedalgorithm.Inaddition,anexperimentalinvestigationonaspatialtrussstructureiscarriedouttoillustratetheidentifiedabilityoftheproposedapproach.Theresultsindicatethatthefusionalgorithmhasnostrictrequestontheaccuracyandconsistencyofevidencesourcesandcanefficientlyenhancediagnosticaccuracy.
机构地区 不详
出版日期 2019年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
  • 相关文献