Vol43No.5Oct.2023噪声与振动控制NOISEANDVIBRATIONCONTROL第43卷第5期2023年10月文章编号：1006-1355(2023)05-0014-06+51具有相关性的测量激励下车辆振动识别方法研究与应用张袁元，辛江慧，许丽娇，周盼，任春玲（南京工程学院汽车与轨道交通学院，南京211167）摘要：在车辆测试中，基于近源测试得到的激励信号受到相邻振源的干涉，造成测量路径中的信号相关性较大，从而无法准确获得各激励源贡献。建立具有互相干涉多相关特征的系统传递模型，推导多级输入加速度间相关关系表达式，提出基于真实与计算传递函数判断干涉方向的方法，进而结合相干方法处理干涉源，获得独立源对响应目标贡献；最后，以车辆总成系统为对象，应用系统方法识别车辆振动传递路径和能量贡献，可为解决车辆测试中相关特征的振源识别提供理论和方法上的依据。关键词：振动与波；车辆振动；加速度传递函数；相关性；路径识别中图分类号：U463.32；U467.3文献标志码：ADOI编码：10.3969/j.issn.1006-1355.2023.05.003ResearchandApplicationofVehicleVibrationIdentificationMethodunderCorrelatedMeasurementExcitationZHANGYuanyuan,XINJianghui,XULijiao,ZHOUPan,RENChunling(SchoolofAutomobileandRailTransit,NanjingInstituteofEngineering,Nanjing211167,China)Absrtact:Inthevehicletest,theexcitationsignalobtainedbasedonthenearsourcetestisinterferedbytheadjacentvibrationsources,resultinginalargesignalcorrelationofthemeasurementpaths,sothatitisimpossibletoaccuratelyobtainthecontributionofeachexcitationsource.Inthispaper,asystemtransfermodelwithmutualinterferenceandmulti-correlationcharacteristicsisestablished,andtheexpressionofthecorrelationamongmulti-levelinputaccelerationsisderived.Amethodofjudgingtheinterferencedirectionbasedontherealandcalculatedtransferfunctionsisproposed,andthentheinterferencesourceisprocessedbyusingthecoherencemethodtoobtainthecontributionoftheindependentsourcetotheresponsetarget.Finally,takingthevehicleassemblysystemasanobject,thesystemmethodisappliedtoidentifythevehiclevibrationtransmissionpathandenergycontribution.Thisworkprovidesatheoreticalandmethodologicalbasisforthevibrationsourceidentificationofrelevantcharacteristicsinvehicletesting.Keywords:vibrat...
