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基于Chebyshev区间方法的动力总成悬置系统稳健性优化.docx

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基于Chebyshev区间方法的动力总成悬置系统稳健性优化 Abstract TherobustnessoptimizationofpowertrainsuspensionsystembasedonChebyshevintervalmethodisstudiedinthispaper.First,thetraditionalsuspensionsystemdesignmethodisbrieflyintroduced.Then,theChebyshevintervalmethodisusedtomodelandsolvetherobustoptimizationproblemofthesuspensionsystem.Theeffectivenessandsuperiorityofthismethodaredemonstratedwithacasestudy.Finally,theconclusionsandoutlookforfutureresearcharegiven. Keywords:robustoptimization,powertrainsuspensionsystem,Chebyshevintervalmethod Introduction Asoneofthekeycomponentsofvehicles,thesuspensionsystemisresponsibleforsupportingtheweightofthevehicle,providingstability,comfort,andsafetyofthepassengers.Awell-designedsuspensionsystemcaneffectivelyisolatethevehiclebodyfromexternaldisturbances,reducethevibrationandnoise,andimprovetherideandhandlingperformanceofthevehicle.Therefore,thesuspensionsystemdesignisalwaysanimportantissueinautomotiveengineering. However,thesuspensionsystemdesignisnotaneasytask.Thesuspensionsystemhasacomplexstructureandissubjecttovariousuncertaintiesanddisturbancesduringoperation,suchasroadroughness,windload,tireparameters,etc.Inaddition,thedesignofthesuspensionsystemisalwaysacompromisebetweenconflictingobjectives,suchasridecomfort,handlingstability,andsafety. Toaddresstheseissues,robustoptimizationhasemergedasapowerfultoolforsuspensionsystemdesign.Therobustoptimizationconsiderstheuncertaintiesanddisturbancesandaimstofindasuspensionsystemthatmaintainsitsperformanceunderallpossibleoperatingconditions.Amongthevariousrobustoptimizationmethods,theChebyshevintervalmethodhasattractedincreasingattentionduetoitssuperiorityinhandlinguncertaintieswithboundedintervals. Inthispaper,therobustnessoptimizationofpowertrainsuspensionsystembasedonChebyshevintervalmethodisinvestigated.Thefollowingsectionswillelaboratethemainstepsandkeypointsofthismethodanddemonstrateitseffectivenesswithacasestudy. TraditionalSuspensionSystemDesign BeforeintroducingtheChebyshevintervalmethod,itisnecessar