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单片机控制步进电机外文原文Steppingmotorapplicationandcontrolsteppermotorisanelectricalpulsewillbeconvertedintoangulardisplacementoftheimplementingagencies.Putitinsimplelanguage-speaking:Whenthestepperdrivepulsesignaltoareceiver,itdrivessteppermotorrotationdirectionbysettingafixedpointofview(andthestepangle).Youcancontrolthenumberofpulsestocontroltheamountofangulardisplacement,soastoachievethepurposeofaccuratepositioning;Atthesametime,youcanbycontrollingthepulsefrequencytocontrolthemotorrotationspeedandacceleration,soastoachievethepurposeofspeed.SteppermotordirectlyfromtheAC-DCpowersupply,andmustusespecialequipment-steppermotordrive.Steppermotordrivesystemperformance,inadditiontotheirownperformancewiththemotorontheoutside,butalsotoalargeextentdependonthedriveisgoodorbad.Atypicalsteppermotordrivesystemisoperatedbythesteppermotorcontroller,steppermotordrivesandsteppermotorbodyiscomposedofthreeparts.Steppermotorcontrollerstepperpulseanddirectionsignal,eachmadeofapulse,steppermotor-drivensteppermotordrivesarotorrotatingstepangle,thatis,step-by-stepfurther.Highorlowspeedsteppermotor,orspeed,ordeceleration,startorstoppulsesareentirelydependentonwhetherthelevelorfrequency.Decidethedirectionofthesignalcontrollersteppermotorclockwiseorcounterclockwiserotation.Typically,thesteppermotordrivecircuitfromthelogiccontrol,powerdrivercircuit,protectioncircuitandpowercomponents.Steppermotordrivecontroller,oncereceivedfromthedirectionofthesignalandsteppulse,thecontrolcircuitonapre-determinedwayoftheelectricalpower-phasesteppermotorexcitationwindingsoftheconductionorcut-offsignal.Controlcircuitoutputsignalpowerislow,cannotprovidethenecessarysteppingmotoroutputpower,theneedforpoweramplifier,whichissteppermotordrivenpowerdrivepart.Powersteppermotordrivecircuittocontroltheinputcurrentwindingtoformaspaceforrotatingmagneticfieldexcitation,therotor-drivenmovement.Protectioncircuitintheeventofshortcircuit,overload,overheating,suchasfailuretostoptherapiddriveandmotor.Motorisusuallyforthepermanentmagnetrotor,whenthecurrentflowsthroughthestatorwindings,thestatorwindingsproduceamagneticfieldvector.Themagneticfieldwillleadtoarotorangleofrotation,makingapairofrotorandstatormagneticfielddirectionofthemagneticfielddirection.Whenthestatorrotatingmagneticfieldvectorfromadifferentangle.Alsoastherotormagneticfieldtoapointofview.Anelectricalpulseforeachinput,themotorrotationanglestep.Itsoutputandinputoftheangulardisplacementisproportionaltothepulses,withpulsefrequencyproportionaltospeed.Powertochangetheorderofwinding,theelectricalwillbereversed.Wecan,therefore,controlthepulsenumber,frequencyandelectricalpowerwindingsofeachphasetocontroltheorderofrotationofsteppermotor.Steppermotortypes:Permanentmagnet(PM).Magneticgenerallytwo-phasestepper,torqueandaresmallerandgenerallysteppingangleof7.5degreesor15degrees;putmorewindforair-conditioning.Reactive(VR),thedomesticgeneralcalledBF,haveacommonthree-phasereaction,stepangleof1.5degrees;alsohavefive-phasereaction.Noise,notorquehasbeensetatalargenumberofout.Hybrid(HB),commontwo-phasehybrid,five-phasehybrid,three-phasehybrid,four-phasehybrid,two-phasecanbecommonwiththefour-phasedrive,five-phasethree-phasemustbeusedwiththeirdrives;Two-phase,four-phasehybridstepangleis1.8degreesmorethanasmallsize,greatdistance,andlownoise;Five-phasehybridsteppingmotorisgenerally0.72,themotorstepanglesmall,highresolution,butthecomplexityofdrivecircuits,wiringproblems,suchasthe5-phasesystemof10lines.Three-phasehybridsteppingmotorstepangleof1.2degrees,butaccordingtotheuseof1.8degrees,thethree-phasehybridsteppingmotorhasatwo-phasemixedthanthefive-phasehybridmorepolewillhelpelectricfoldersymmetricangle,itcanbemorethantwo-phase,five-phasehighaccuracy,theerrorevensmaller,runmoresmoothly.Steppermotortomaintaintorque:steppermotorpowermeansnorotation,thestatorlockedrotortorque.Itisasteppermotor,oneofthemostimportantparameters,usuallyinthelow-speedsteppermotortorqueatthetimeofclosetomaintainthetorque.Asthesteppermotoroutputtorqueincreaseswiththespeedofconstantattenuation,theoutputpoweralsoincreaseswiththespeedofchange,soastomaintaintorqueonthesteppermotortomeasuretheparametersofoneofthemostimportant.Forexample,whenpeoplesaythatthesteppermotor2N.m,intheabsenceofspecialcircumstancesthatmeansformaintainingthetorqueofthesteppermotor2N.m.Precisionsteppermotors:steppermotorstepangleaccuracyof3-5%,notcumulative.Steppermotortoallowtheminimumamountofsurfacetemperature：Steppermotorcausesthemotortemperatureistoohighthefirstmagneticdemagnetization,resultinginlossoftorquedownevenfurther,sothemotorsurfacetemperatureshouldbethemaximumalloweddependingonthemotordemagnetizationofmagneticmaterialpoints;Generallyspeaking,themagneticdemagnetizationpointsareabove130degreesCelsius,andsomeevenashighas200degreesCelsius,sothesteppermotorsurfacetemperatureof80-90degreesCelsiusisnormal.Startfrequencyofno-load:thesteppermotorincaseofno-loadtothenormalstartofthepulsefrequency,ifthepulsefrequencyishigherthanthevalueofmotordoesnotstart,possibletolosestepsorblocking.Inthecaseoftheloa