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1、外文文献：KnowledgeofthesteppermotorWhatisasteppermotor：Steppermotorisakindofelectricalpulsesintoangulardisplacementoftheimplementingagency.Popularlittlelesson:Whenthedriverreceivesasteppulsesignal,itwilldriveasteppermotortosetthedirectionofrotationatafixedangle(andthestepangle).Youca
2、ncontrolthenumberofpulsestocontroltheangulardisplacement,soastoachieveaccuratepositioningpurposes;thesametimeyoucancontrolthepulsefrequencytocontrolthemotorrotationspeedandacceleration,toachievespeedcontrolpurposes.Whatkindsofsteppermotorsub-：Inthreesteppermotors:permanentmagnet(
3、PM),reactive(VR)andhybrid(HB)permanentmagnetstepperusuallytwo-phase,torque,andsmaller,stepangleof7.5degreesorthegeneral15degrees;reactionstepisgenerallythree-phase,canachievehightorqueoutput,stepangleof1.5degreesisgenerally,butthenoiseandvibrationarelarge.80countriesinEuropeandAm
4、ericahavebeeneliminated;hybridstepperisamixofpermanentmagnetandreactiveadvantages.Itconsistsoftwophasesandthefive-phase:two-phasestepangleof1.8degreeswhilethegeneralfive-phasestepangleof0.72degreesgenerally.ThemostwidelyusedStepperMotor.Whatistokeepthetorque(HOLDINGTORQUE)Howmuch
5、precisionsteppermotor?Whetherthecumulative：Thegeneralaccuracyofthesteppermotorstepangleof3-5%,andnotcumulative.-23-SteppermotortoallowtheminimumamountofsurfacetemperatureSteppermotortoallowtheminimumamountofsurfacetemperature：Steppermotorcausesthemotortemperatureistoohighthefirst
6、magneticdemagnetization,resultinginlossoftorquedownevenfurther,sothemotorsurfacetemperatureshouldbethemaximumalloweddependingonthemotordemagnetizationofmagneticmaterialpoints;Generallyspeaking,themagneticdemagnetizationpointsareabove130degreesCelsius,andsomeevenashighas200degrees
7、Celsius,sothesteppermotorsurfacetemperatureof80-90degreesCelsiusisnormal.HowtodeterminethesteppermotordriverDCpowersupply：A.DeterminationofthevoltageHybridsteppingmotordriverpowersupplyvoltageisgenerallyawiderange(suchastheIM483supplyvoltageof12~48VDC),thesupplyvoltageisusuallyba
8、sedontheworkofthemotorspeedandresponseto
