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1、某轿车动力装置参数的匹配设计英文翻译毕业论文AbstractTheavailabilityofpressureinformationofahydraulicactuatormakesitpossibletoimprovethequalityofvehiclepowertransmissionviaprecisefeedbackcontrolandtorealizeon-boardfaultdiagnosis.However,thehighcostofapressuresensorhasnotallowedit
2、swidespreaddeploymentdespitesuchapparentadvantages.Thispaperpresentsanobserver-basedalgorithmtoestimatethepressureoutputofahydraulicactuatorinavehiclepowertransmissioncontrolsystem.Theproposedalgorithmbuildsonmorereadilyavailableslipvelocityandthemodelsofah
3、ydraulicactuatorandamechanicalsubsystem.Theformerisobtainedempiricallyviasystemidentificationduetothecomplexityofthehydraulicactuator,whilethelatterisderivedphysically.Theresultingrobustobserverisguaranteedtobestableagainstpossibleparametricvariationsandtor
4、queestimationerrors.Thehardwarein-the-loopstudiesdemonstratetheviabilityoftheproposedalgorithminthefieldofadvancedvehiclepowertransmissioncontrolandfaultdiagnosis.C2002ElsevierScienceLtd.Allrightsreserved.Received1March2001;accepted27August2001Keywords:Robu
5、stobserver;Systemidentification;Hydraulicactuator;Vehiclepowertransmissioncontrolsystem;Hardware-in-the-loopsimulation1.IntroductionAutomaticandcontinuouslyvariabletransmissionsystemshavebeenexpandingtheirpresenceinpassengervehiclesinrecentyears,whichhasnat
6、urallypromptedactiveresearchonvehiclepowertransmissioncontrolsystems.Themaintopicsincludeshiftcontrolalgorithm(Shin,Hahn,Yi,&Lee,2000a;Zheng,Srinivasan,&Rizzoni,1999;Shin,Hahn,&Lee,2000b),feedbackcontroloftorqueconverterclutchslipsystems(Jauch,1999;Hibino,O
7、sawa,Yamada,Kono,&Tanaka,1996;Hahn&Lee,2000),newhydrauliccircuitsforcontrolperformanceenhancement(Jung,Cho,&Lee,2000),etc.Despitetheextensiveresearcheffortoncontrolalgorithms,itappearsthatthepressureinformationofahydraulicactuatorhasnotbeenfullyutilizedinve
8、hiclepowertransmissioncontrol,largelyduetothehighcostofapressuresensor.Asaresult,mostpracticalcontrollershavebeenlargelybuiltuponthemechanicalsubsystemonly,whileneglectingthedynamicsofahydraulicactuato
