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1、譯文學(xué)院：機(jī)電與汽車工程學(xué)院專業(yè)：機(jī)械設(shè)計(jì)制造及其自動(dòng)化學(xué)號(hào)：09455------姓名：吳欣洋指導(dǎo)教師：張建Semi-activehydro-gassuspensionsystemforatrackedvehicleU.Solomon,ChandramouliPadmanabhanMachineDesignSection,DepartmentofMechanicalEngineering,IndianInstituteofTechnologyMadras,Chennai600036,IndiaReceived18
2、June2010;receivedinrevisedform12November2010;accepted11January2011Availableonline4March2011AbstractAsemi-activehydro-gassuspensionisproposedforatrackedvehicletoimproveridecomfortperformance,withoutcompromisingtheroadholdingandloadcarryingcapabilitiesofthepassi
3、vesuspension.Thisisachievedthroughanactivedamperusedinparallelwithagasspring.Thesuspensiondamperparametersarevariedbyacontrolmechanismbasedonsky-hookdampingtheory,whichalterstheflowcharacteristics.Adamperprototypehasbeendeveloped,testedforitsflowcharacteristic
4、s,afterwhichithasbeenintegratedintoanexistinghydro-gassuspensionsystem.Ananalyticalmodelhasbeenproposedfromfirstprinciplesratherthandevelopingaphenome-nologicalmodelbasedonexperimentalcharacteristics.Thismodelisvalidatedwithexperimentscarriedoutonasuspensionte
5、strig.Inordertocomparetheperformancewiththeoriginalpassivesystem,anin-planevehiclemodelisdevelopedandthesimulationsclearlyshowthatthesemi-activesystemperformanceissuperiortothepassivesystem.2011ISTVS.PublishedbyElsevierLtd.Allrightsreserved.Keywords:Semi-activ
6、ehydro-gassuspension;Sky-hookdamper;Variableorificedamper1.IntroductionThedampinginapassivesuspensionsystemischosentoprovideoptimalperformanceatlowfrequencies.However,thehigherdampingchosenmakestheperformancetodegradeathigherfrequencies.Asemi-activesuspension,
7、withvariabledampercharacteristicsoffersalowcostsolutiontoimprovetheridecomfortwithoutcompromisingroadholdingandloadcarryingperformanceofthesuspension.Oneofthemostpopularsemi-activedampingstrategieshasbeenthe“sky-hook’’damperoriginallyproposedbyKarnoppetal.Thep
8、erformanceofthisdamperhasbeeninvestigatedindetailbyKarnoppandEmuraetal.havehighlightedthelimitationsinrealizingsuchadamperinapracticalscenario.OueslatiandSankarstudiedtheperformanc
