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ISSN1674-8484CN11-5904/U,2010,12JAutomotiveSafetyandEnergy,2010,Vol.1No.2ISSN1674-8484CN11-5904/U,2010,12JAutomotiveSafetyandEnergy,2010,Vol.1No.210/12152157陈林，李建秋，杨福源，欧阳明高100084DrivingcontrolmethodofpiezoactuatordieselfuelinjectorCHENLin,LIJianqiu,YANGFuyuan,OUYANGMinggao(StateKeyLaboratoryofAutomotiveSafetyandEnergy,Tsinghuauniversity,Beijing100084,China)Abstract:Preciselycontrolledpiezodieselfuelinjectorcanimprovedieselengineperformance.Bytakingenergydissipation,heatsinkingandhardwarecostintoconsideration,adrivingmoduleusingswitchingvoltageamplifierwasdesigned.Astaticopenlooppulsewidthmodulation(PWM)controlmethodwasproposedtocontrolthecharging/dischargingprocedurebyturningON/OFFtheMOSFET.Asthesolutionofthedifficultcalibrationofcontrolparameters,anonlineself-tuningmethodwasimplemented.Theapplicationtestwastakenonthefuelbench.Controlparameterswereestimatedthroughsimulationandsubsequentlytunedonline.Theresultsshowthatthemoduleassuresfastresponseoftheinjectorandstableinjectionquality,someetstheworkingrequirementofthedieselengine.Keywords:dieselengine;fuelinjector;piezoactuator;drivingmodule;self-tuningofcontrolparameters2010-02-012007CB210003(1982)()E-mail:chenlin00@mails.tsinghua.edu.cnE-mail:fyyang@mail.tsinghua.edu.cn[1-3]pulsewidthmodulationPWM153153MOSFET/[4]1DC/DCMOSFETM1MOSFETM2MOSFETM3MOSFETRsLsanalog-digitalADMCUmicrocontrollerunitVinfiRsLsCpdQ/dt[5]1232MOSFETM1M2ON/OFFVinf=1CpidtLsdidtRsi.(1)(a)(b)QQCU15420101215420101250~100mHpulsewidthmodulationPWMMOSFET/MOSFET/10μs5[6-7]PWM[8]26PWM100~15027underdamped41155155LOW_CHKEMSEMSenginemanagementsystemTUNE_STARTPI222PWM120~140V10AenginecontrolunitECURLC9(1)811562010121562010121000200~30010120VEFSIFR60040MPa1ms11100MPa4ImaxUmax2t022113%Umax/VImax/Ati/μs/mgto/μs11201050019.9580.051230.710100035.2560.069230.6722120850018.2200.048268.420100033.9220.063266.8233100105003.9860.381436.717100026.7190.432444.45441008500N/AN/A100018.7460.803592.531N/Aprti315715730%类型pr/MPati/μs喷油量/mgto/μs4050014.1140.065208.99040100026.7600.062211.98610050019.9580.051230.710100100035.2560.069230.672405007.8020.085323.06540100030.8910.152331.21110050017.3640.156292.436100100044.3620.154295.279123[1]WüstDrH,SchallS.Piezoinjectorsgarnergermaninnovationandadvancedtechaward[EB/OL].(2006-01-28).[2].[J].,2004,115(3):4-6.HULinfeng.FutureandTodayofDieselInjectionSystem[J].ModernVehiclePower,2004,115(3):4-6.[3]OkiM,MatsumotoS,ToyoshimaY,etal.180MPapiezocommonrailsystem[C]//Proc2006SAEWorldCongress,Detroit,Michigan,2006.[4]GnadG,KasperR.Powerdrivecircuitsforpiezo-electricactuatorsinautomotiveapplications[C]//ProcIEEEIntConfonInduTech,Sichuan,China,2006.[5]OhB,OhS,LeeKetal.Developmentofaninjectordriverforpiezoactuatedcommonrailinjectors[C]//Proc14thAsiaPacificAutomotive,Hollywood,California,USA,2007.[6]Infineon-Technology-AG.Peak&holdcurrentshapegeneratedbytricorederivativeTC1775[Z].InfineonAG,2002.[7]LIJin.ZHANGKexun,ZHANGQi.Solenoidvalvedrivingmoduledesignforelectronicdieselinjectionsystem[C]//Proc2005SAEWorldCongress,Detroit,Michigan,2005.[8]DrivvenInc.DIDriverModuleKitUser'sManual[Z].DrivvenInc,2007:23-26.