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外文翻译--步进电机和伺服电机的系统控制.doc

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外文翻译--步进电机和伺服电机的系统控制.doc

StepMotorServoMotorSystemsandControlsMotionArchitect®SoftwareDoestheWorkforYou...Configure,Diagnose,DebugCompumotorsMotionArchitectisaMicrosoft®Windows™basedsoftwaredevelopmenttoolfor6000Seriesproductsthatallowsyoutoautomaticallygeneratecommentedsetupcode,editandexecutemotioncontrolprograms,andcreateacustomoperatortestpanel.TheheartofMotionArchitectistheshell,whichprovidesanintegratedenvironmenttoaccessthefollowingmodules.SystemConfiguratorThismodulepromptsyoutofillinallpertinentsetupinformationtoinitiatemotion.Configurabletothespecific6000Seriesproductthatisselected,theinformationisthenusedtogenerateactual6000languagecodethatisthebeginningofyourprogram.ProgramEditorThismoduleallowsyoutoeditcode.ItalsohasthecommandsavailablethroughHelpmenus.Ausersguideisprovidedondisk.TerminalEmulatorThismoduleallowsyoutointeractdirectlywiththe6000product.Helpisagainavailablewithallcommandsandtheirdefinitionsavailableforreference.TestPanelYoucansimulateyourprograms,debugprograms,andcheckforprogramflowusingthismodule.MotionArchitect®hasbeendesignedforusewithall6000Seriesproductsforbothservoandsteppertechnologies.TheversatilityofWindowsandthe6000Serieslanguageallowyoutosolveapplicationsrangingfromtheverysimpletothecomplex.MotionArchitectcomesstandardwitheachofthe6000Seriesproductsandisatoolthatmakesusingthesecontrollersevenmoresimpleshorteningtheprojectdevelopmenttimeconsiderably.AvalueaddedfeatureofMotionArchitect,whenusedwiththe6000ServoControllers,isitstuningaide.Thisadditionalmoduleallowsyoutographicallydisplayavarietyofmoveparametersandseehowtheseparameterschangebasedontuningvalues.UsingMotionArchitect,youcanopenmultiplewindowsatonce.Forexample,boththeProgramEditorandTerminalEmulatorwindowscanbeopenedtoruntheprogram,getinformation,andthenmakechangestotheprogram.OnlinehelpisavailablethroughoutMotionArchitect,includinginteractiveaccesstothecontentsoftheCompumotor6000SeriesSoftwareReferenceGuide.SOLVINGAPPLICATIONSFROMSIMPLETOCOMPLEXServoControlisYourswithServoTunerSoftwareCompumotorcombinesthe6000SeriesservocontrollerswithServoTunersoftware.TheServoTunerisanaddonmodulethatexpandsandenhancesthecapabilitiesofMotionArchitect®.MotionArchitectandtheServoTunercombinetoprovidegraphicalfeedbackofrealtimemotioninformationandprovideaneasyenvironmentforsettingtuninggainsandrelatedsystemparametersaswellasprovidingfileoperationstosaveandrecalltuningsessions.DrawYourOwnMotionControlSolutionswithMotionToolboxSoftwareMotionToolbox™isanextensivelibraryofLabVIEW®virtualinstrumentsVIsforiconbasedprogrammingofCompumotors6000Seriesmotioncontrollers.WhenusingMotionToolboxwithLabVIEW,programmingofthe6000Seriescontrollerisaccomplishedbylinkinggraphicicons,orVIs,togethertoformablockdiagram.MotionToolboxshasalibraryofmorethan150command,status,andexampleVIs.AllcommandandstatusVIsincludeLabVIEWsourcediagramssoyoucanmodifythem,ifnecessary,tosuityourparticularneeds.MotionToolboxalsusermanualtohelpyougutupandrunningquickly.comprehensiveMSoftwareforComputerAidedMotionApplicationsCompuCAMisaWindowsbasedprogrammingpackagethatimportsgeometryfromCADprograms,plotterfiles,orNCprogramsandgenerates6000codecompatiblewithCompumotors6000Seriesmotioncontrollers.AvailableforpurchasefromCompumotor,CompuCAMisanaddonmodulewhichisinvokedasautilityfromthemenubarofMotionArchitect.FromCompuCAM,runyourCADsoftwarepackage.Onceadrawingiscreated,saveitaseitheraDXFfile,HPGLplotfileorGcodeNCprogram.ThisgeometryisthenimportedintoCompuCAMwherethe6000codeisgenerated.Aftergeneratingtheprogram,youmayuseMotionArchitectfunctionssuchaseditingordownloadingthecodeforexecution.MotionBuilderSoftwareforEasyProgrammingofthe6000SeriesMotionBuilderrevolutionizesmotioncontrolprogramming.Thisinnovativesoftwareallowsprogrammerstoprograminawaytheyarefamiliarwithaflowchartstylemethod.MotionBuilderdecreasesthelearningcurveandmakesmotioncontrolprogrammingeasy.MotionBuilderisaMicrosoftWindowsbasedgraphicaldevelopmentenvironmentwhichallowsexpertandnoviceprogrammerstoeasilyprogramthe6000Seriesproductswithoutlearninganewprogramminglanguage.Simplydraganddropvisualiconsthatrepresentthemotionfunctionsyouwanttoperform.MotionBuilderisacompleteapplicationdevelopmentenvironment.Inadditiontovisuallyprogrammingthe6000Seriesproducts,usersmayconfigure,debug,download,andexecutethemotionprogram.SERVOVERSUSSTEPPER...WHATYOUNEEDTOKNOWMotorTypesandTheirApplicationsThefollowingsectionwillgiveyousomeideaoftheapplicationsthatareparticularlyappropriateforeachmotortype,togetherwithcertainapplicationsthatarebestavoided.Itshouldbestressedthatthereisawiderangeofapplicationswhichcanbeequallywellmetbymorethanonemotortype,andthechoicewilltendtobedictatedbycustomerpreference,previousexperienceorcompatibilitywithexistingequipment.AhelpfultoolforselectingthepropermotorforyourapplicationisCompumotorsMotorSizingandSelectionsoftwarepackage.Usingthissoftware,userscaneasilyidentifytheappropriatemotorsizeandtype.Hightorque,lowspeedcontinuousdutyapplicationsareappropriatetothestepmotor.Atlowspeedsitisveryefficientintermsoftorqueoutputrelativetobothsizeandinputpower.Microsteppingcanbeusedtoimprovesmoothnessinlowspeedapplicationssuchasameteringpumpdriveforveryaccurateflowcontrol.Hightorque,highspeedcontinuousdutyapplicationssuittheservomotor,andinfactastepmotorshouldbeavoidedinsuchapplicationsbecausethehighspeedlossescancauseexcessivemotorheating.Short,rapid,repetitivemovesarethenaturaldomainofthestepperduetoitshightorqueatlowspeeds,goodtorquetoinertiaratioandlackofcommutationproblems.ThebrushesoftheDCmotorcanlimititspotentialforfrequentstarts,stopsanddirectionchanges.Lowspeed,highsmoothnessapplicationsareappropriateformicrosteppingordirectdriveservos.Applicationsinhazardousenvironmentsorinavacuummaynotbeabletouseabrushedmotor.Eitherastepperorabrushlessmotoriscalledfor,dependingonthedemandsoftheload.Bearinmindthatheatdissipationmaybeaprobleminavacuumwhentheloadsareexcessive.SELECTINGTHEMOTORTHATSUITSYOURAPPLICATIONIntroductionMotioncontrol,initswidestsense,couldrelatetoanythingfromaweldingrobottothehydraulicsysteminamobilecrane.InthefieldofElectronicMotionControl,weareprimarilyconcernedwithsystemsfallingwithinalimitedpowerrange,typicallyuptoabout10HP7KW,andrequiringprecisioninoneormoreaspects.Thismayinvolveaccuratecontrolofdistanceorspeed,veryoftenboth,andsometimesotherparameterssuchastorqueoraccelerationrate.Inthecaseofthetwoexamplesgiven,theweldingrobotrequiresprecisecontrolofbothspeedanddistancethecranehydraulicsystemusesthedriverasthefeedbacksystemsoitsaccuracyvarieswiththeskilloftheoperator.Thiswouldntbeconsideredamotioncontrolsysteminthestrictsenseoftheterm.OurstandardmotioncontrolsystemconsistsofthreebasicelementsFig.1ElementsofmotioncontrolsystemThemotor.Thismaybeasteppermotoreitherrotaryorlinear,aDCbrushmotororabrushlessservomotor.Themotorneedstobefittedwithsomekindoffeedbackdeviceunlessitisasteppermotor.Fig.2showsasystemcompletewithfeedbacktocontrolmotorspeed.Suchasystemisknownasaclosedloopvelocityservosystem.Fig.2TypicalclosedloopvelocityservosystemThedrive.Thisisanelectronicpoweramplifierthatdeliversthepowertooperatethemotorinresponsetolowlevelcontrolsignals.Ingeneral,thedrivewillbespecificallydesignedtooperatewithaparticularmotortype–youcantuseastepperdrivetooperateaDCbrushmotor,forinstance.ApplicationAreasofMotorTypesStepperMotorsStepperMotorBenefitsSteppermotorshavethefollowingbenefitsLowcostRuggednessSimplicityinconstructionHighreliabilityNomaintenanceWideacceptanceNotweakingtostabilizeNofeedbackcomponentsareneeded

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