基于近似模型的车辆悬架参数优化分析

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1、西南交通大学硕士研究生学位论文第1I页AbstractOnthebasisofconsideringthehandlingstability，inordertoimprovetheridecomfortofthecar，thevehicle’SsuspensionsystemWasoptimizedbythemulti-objectiveoptimizationmethod，thenmakethevehicle’Sridecomfortimprovedundertheconditionofguaranteeingthehandlingstability．Atthesam

2、etime，throughaseriesofresearchmethodsandmeans，providinganewtrainofthoughtofsuspensionoptimumdesign，providingabeneficialreferenceoftheresearchinthisfield．Theconcreteresearchmethodsandcontentofthisarticleincludes：Firstly，accordingtothecurrentinternationalanddomesticstandardsandresearchachi

3、evementsofpredecessors，asummaryaboutthetestingmethodsandevaluationindicatorsofhandlingstabilityandridecomfortweremade．Weighingthetestmethodsandevaluationindicators，asetofsuitableevaluationindicatorswereputforward．Secondly，accordingtotherelevantdataofthevehicle，byusingmulti-bodydynamicsso

4、ftwareADAMS／CAR，aaccuratevehiclerigid-flexiblecoupledmodelWasestablished．Specially,inordertoevaluatethevibrationeffectsonhumancomfortandhealth，driverandseatmodelwereestablished．Then，accordingtotheevaluationmethodinthispaper，forhandlingstability，adoublelanechangetestwasmade，forridecomfort

5、，randominputsimulationandpulseinputtestwerecarriedout。Inparticular，thecomprehensiveevaluationaboutridecomfortWascarriedOut．Usingthecharacteristicparametersofsuspensionsystem(suspensionspringstiffnessandshockabsorberdamping)astheexperimentalfactor，thehandlingstabilityandridecomfortevaluat

6、ionindicatorsastheoutputresponse．Thedesignofexperimentofsystem’SinputandoutputwerecarriedoutbyusingOptLHD，LHD，OrthogonalArrays，CCD，Box．Behnkenrespectively．Thefivekindsofexperimentaldesignmethodswerecompared，theOptLHD’Sdesignsuperioritywasproved．Onthebasisofexperimentaldesign，theinputando

7、utput’SapproximatemodelofthesystemwerebuiltbyusingRSM，RBFneuralnetwordandKrigingseparately．Throughthemodelingerroranalysis，provingthattheKringmodel’SmodelingaccuracyWasthebestone．Sointhisarticle，usingKringmethodastheapproximatemodelingmethod．BasedontheKringmodel，inorderto