自动变速器换挡规律的研究大学毕业论文外文文献翻译及原文.pdf

毕业设计（论文）
外文文献翻译

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翻译日期：2017.02.14

毕业论文(设计)外文翻译

机械工程学院机械制造及其自动化专业(本科)2008级机制二班

课题名称：某变速箱上盖零件大批生产的
工艺工装设计

THERESEARCHSOF

AMTSHIFTINGSCHEDULES

VehicularAutomaticTransmissioncanbedividedintothreetypes:AutomaticTransmission
(AT),AutomatedMechanicalTransmission(AMT)andContinuouslyVariableTransmission
(CVT).AMThasbecomeakindoftransmissionthatisfullofpotentiality,duetoitshightransfer
efficiency,lowcostandeasinesstomanufacture.
TheresearchonAMTshiftingperformanceiskeytechnologyinthedeveloping.Shifting
performancedirectlyinfluencethemarketcompetitionandindustrializationofAMT.
AMThasgoodmarketexpectation,butduringtheshiftingprocedure,thepowermustbecut
offwhichcausesthepoorshiftingperformancethanATandCVT.Onlythroughimprovingthe
shiftingperformancecanthecommercialcompetencebeestablished.Sothevirtualimportant
thingistofindthewaytoimproveshiftingperformance.
ThedevelopmentofAMTcanbedividedintothreephases:semi-automatic,automaticand
intelligent.ThetwomajorpartofAMTare:thehardwareincludingthemasteredobject,executor,
sensorsandTCU;andthesoftwareperformingthecontrolstrategy.
TheperformanceofATshiftinfluencesgreatlytheperformanceofthevehicle.Sothe
researchonatshiftqualityisanimportantprobleminthedomainofATresearching.Shiftquality
controlofATisaccomplishedbyelectronicandhydraulicsystem.Toshiftsmoothly,according
therealtimethrottlevalveopeningandvehiclespeedsignal,thecontrollersendselectronic
signalstocontroloilpressurechangingcurveoftheapplyingelements.thispaperanalyzesand
researchdetailedshiftqualitycontrol，thesystemanalyzingmodelofshiftingprocessandpressure
changingcurveoftheapplyingelements
Firstlythispapersummarizestheexistingevaluatedquotaofshiftquality,andfullyanalyzes
andintroducestheexistingcontrolmannerofATshiftquality.
Tomeettheneedsofresearchofvehiclestartingandtherealtimecontrolofshift,thispaper
putsforwardasimplifiedmodelofengine-torqueandadynamicsmodelofATshifti