基于TL494的H桥直流电机控制系统

:10068244(2010)023304基于TL494的H桥直流电机控制系统TheHBridgeDCMotorControlSystemBasedontheTL494(,830008)WangDajiangWuJinqiang(CollegeofMechanicalEngineering,XinjiangUniversity,Urumqi830008,China)[]本文介绍了以TL494为核心,采用PWM技术的直流电机控制系统详细介绍了直流电机PWM调速控制原理接口电路设计H桥功率驱动原理与其电路设计实验表明,基于TL494的H桥直流电机控制系统可简化电路结构,驱动能力强,功耗低并且控制方便,性能稳定[Abstract]ThispaperintroducestheDCmotorcontrolsystemwhichadoptsPWMtechnologyandtheTL494asthecoretechnology.DetailsofPWMDCMotorSpeedControlingtheory,interfacedesigning,Hbridgepowercircuitdesigninganditsdrivingprinciplehavebeenintroduced.ExperimentsshowedthattheHbridgeDCmotorcontrolsystembasedontheTL494cansimplifythecircuitstructure,enhancedrivecapability,lowerpowerconsumption.Itiseasytocontrolandhasstableperformance.:TL494PWMH桥直流电机Keywords:TL494PWMHBridgeDCMotor:TM33:B:(1983-),,,,,:,,(PWM),H,,,1PWM,[1]:n=(U-IR)/KU,I,R,,K,,,(PWM)()U,PWM,,,1,UT,UT,UI+UT,,,,,UI+UTUI+UT0,3324220106DRIVESYSTEMTECHNIQUEVol.24No.2June2010;UI+UT0,1Fig.1Votagepulsecomparator2,Us,UI,UsUI=0,UsUI0,UsUI0,UsUIUTPP/2(UTPP),Us;UI!UTPP/2,Us2PWMFig.2PWMpulsemodulationwaveshape2H,33Fig.3DCmotordrivecontrolflowchart3,,Dir,PWMBrake,TL494,HH4,,3TL4943.1TL494PWM,TL494,16,4TL494[2]:∀∀,()∀∀5V∀∀500mA∀3.2TL494,,,:34:TL494H4TL494Fig.4TL494structurediagram5TL494Fig.5BaseonTL494pushoutputcirucitdesignfosc=1.1RT#CTCTQ1Q2,,,,120mV,,4%,,96%,,48%(03.3V)3.3TL4945MOSFET,,TL4941335:TL494H,,TL494Q1Q2,,98%4HTL494,H,MOSFET,,,MOSFETHH4MOSFETNP,PMOSFET,2PMOSFET2NMOSFET66HFig.6HbridgepowerdrivecircuitVCC,,4,,,,,,UsTL494,-UsUsUs0,VT1VT4,Us0,VT2VT3,:1)UI=0,Us,,VT1VT4VT2VT3,,2)UI0,Us,,VT1VT4VT2VT3,,,UI,3)UI0,Us,VT1VT4,,,UI4)UI!UTPP/2UI!-UTPP/2,Us,VT1VT4VT2VT3,TL494,HPWM,,,TL494PWM,,,[1],..:,1997.7.[2].TL494[J].,2001.[3].[M].:,1999.[4].[J].,2003,36:8788.(22)tionofenergymanagementlawsinhybridvehiclesusingdynamicprogramming.Int.J.Veh.Des.,2005,39(4),349367.[7]Kim,C.,Namgoong,E.,Lee,S.,Kim,T.,andKim,H.FueleconomyoptimizationforparallelhybridvehicleswithCVT.SAEpaper1999011148,1999.[8]Johnson,V.,Wipke,K.,andRausen,D.HEVcontrolstrategyforrealtimeoptimizationoffueleconomyandemissions.SAEpaper2000011543,2000.[9]Paganelli,G.,Guerra,T.,Delprat,S.,Santin,J.,Delhom,M.,andCombes,E.Simulationandassessmentofpowercontrolstrategiesforahybridelectriccar.Proc.InstnMech.Engrs,PartD:J.AutomobileEngineering,2000,214(7),705717.(No.3)36:TL494H