The-Research-of-Permanent-Magnet-Synchronous-Motor

研究生学术英语写作课程论文题目TheResearchofPermanentMagnetSynchronousMotorServoDriveSystems专业班级2013级控制理论与控制工程学号201304011学生姓名王晓敏任课教师高凡AbstractSincethepermanentmagnetsynchronousmotor(PMSM)hasadvantagessuchascompactshape,simplestructure,highefficiency,highpricision,highperformance.TheservosystemusingtheACPMSMiswidelyusedinthefieldofCNCmachinetools,industrialrobots,industrialproductionequipment.Therefore,thestudyofpermanentmagnetsynchronousACservodrivesystembasedonDSPhasanimportantpracticalsignificance.Firstly,thebackgroundandimportanceoftheresearcharesubjectedwithabriefintroductionoftheACservosystemaboutdevelopingsituationandtendency.Afterintroducingtheprincipalofcoordinatetransformation,themathematicalmodelofPMSMinsynchronouscoordinateframeispresented,andthekeytechniquesofvectorcontrolschemewiththe0distrategyarethenanalyzed.ThesoftwareandhardwaredesignofPMSMservodriverarethemainpointsofthedissertation.Forthehardwaredesign,anoverallhardwareschemeispresentedfirst,TMS320LF2407ADSPisusedasthemaincontrollingchipinthecontrolcircuit.Insoftwaredesign,thepapermainlythroughmixedprogramming,variableformatselection,giventheoverallcontrolalgorithm.AndbuildthesimulationmodelinMATLAB/Simulink.Keywords:PMSMACServosystemDSPVectorControlIntroductionSincetheeightiesoflastcentury,withtherapiddevelopmentofsupportingtechnologiessuchasmicroelectronicstechnology,powerelectronics,sensortechnology,motormanufacturingtechnologyandadvancedcontroltheory.ACservosystemwhichcontrolACservomotorsgraduallyreplacetheDCservosystem.arewidelyusedinmechatronics,industrialautomation,CNCmachinetools,largescaleintegratedcircuitmanufacturing,aerospace,militaryweaponswithradarandvariousaspectsofdynamicsystems.IntheimplementationofpermanentmagnetsynchronousmotorasdigitalACservomotorsysteminthefieldofhigh-precisionmotioncontrolanddrivehasbeenmorewidelyused.Thechooseofpermanentmagnetmaterialhasalargeimpactonthestructureandperformanceofthemotor.Theferrite,rareearthcobaltandneodymiumironarewidelyusedaspermanentmagnets.NdFeBisanewtypeofpermanentmagnetmaterialsinrecentyears,whichthecoercivityandremanencedensityishigherthantheothertwotypesofpermanentmagneticmaterialsandmuchlowercostthanrareearthcobalt,iscurrentlythemostwidelyusedpermanentmagneticmaterials.Developmentofpermanentmagneticmaterialsalsoplaysavitalroleonpermanentmagnetsynchronousmotorapplications.Main1.ConceptandClassificationofACServoSystem1.1ConceptServomeansthatthesystempropulsioninpeople’sexpectbyfollowingexternalinstruction,theelementofthispropulsionincludingposition,speedandtorque.Thedevelopofservosystemprocessfromhydraulic,pneumatictoelectric,andtheelectricservosystemincludingservomotors,feedbackdevicesandcontroller.Inthe1960s,theDCmotoristheearlisttobeamainexecutionunit,after1970s,theACservomotor’spriceisrising,graduallyreplacingtheDCmotortobethedominateexecutionintheservosystem.Thefunctionofthecontrolleristocompletetheclosedloopcontroloftheservosystemincludingtorque,speedandposition.1.2ClassificationAccordingtothedifferencestoprocessthesignal,ACservosystemcanbedividedintoanalogservo,mixeddigitalandanalogservo,alldigitalservo.Ifaccordingtothedifferenceofthetypeofservomotor,itcanbedevidedintotwotypes:oneistheservosystemconsistofpermanentmagnetsynchronousmotor,anotheriscomposedofsquirrelcageinductionmotor.Thedifferencesbetweenthetwoisthatpermanentmagnetsynchronousmotorservosystemrequirestousemagneticpositionsensor,whiletheinductionmotorservosystemcontainsslipfrequencycalculationsection.Ifweusemicroprocessorsoftwaretocontroltheservo,wecanmakepermanentmagnetsynchronousservomotorandsquirrelcageinductionservomotortousethesamesetofservoamplifier.2.DevelopatHomeandAbroadofACPMSMServoDriveSystem2.1DevelopmentTrendofACServoDriveSystem2.1.1All-DigitalTheservocontrolunitusingnewhighspeedmicroprocessorandadedicateddigitalsignalprocessor(DSP)andafieldprogrammablegatearray(FPGA)willoverallinplaceofservocontrolunitbasedonanalogelectronicdevices,inordertoachieveafullydigitalservosystem.2.1.2UsingNewPowerElectronicSemiconductorDevicesAtpresent,theoutputdevicesoftheservosystemareincreasinglyusingnewpowersemiconductordeviceswithhighfrequencyswitching,thereareGiantTransistor(GTR),Metal-Oxide-SemiconductorField-EffectTransistor(MOSFET)andsoon.Theapplicationoftheseadvanceddevicessignificantlyreducethelossofservounitoutputcircuit,improvetheresponsespeedofthesystem,reduceopratingnoise.Whichisparticularlyworthmentioningisthelatestservocontrolsystem,hasstartedtouseanewmodelthatintegratethefunctionofthecontrolcircuitandthepowerelectricswitchingdevices,calledintelligentpowermodule(IPM).Thisdevicewillintegrateinputisolation,dynamicbraking,over-temperature,over-voltage,overcurrentprotectionandfaultdiagnosisallintoasmallmodule,ofwhichinputlogiclevelisfullycompatiblewithTTLsignal,candirectlyinterfacethemicro-outputprocessor.2.1.3Integrated,ModularWiththedevelopmentofpowerelectronictechnology,moderncontroltechnology,motormanufacturingtechnologyandchiptechnology,thestandardofthemotorservodrivesystemdesigninghasbeenimprovedsynchronization,sot