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ID:43429291
大小:122.50 KB
页数:24页
时间:2019-10-02
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1、-/外文文献:KnowledgeofthesteppermotorWhatisasteppermotor:Steppermotorisakindofelectricalpulsesintoangulardisplacementoftheimplementingagency.Popularlittlelesson:Whenthedriverreceivesasteppulsesignal,itwilldriveasteppermotortosetthedirectionofrotationatafixedangle(andthestepangle).Youcancontrolthenu
2、mberofpulsestocontroltheangulardisplacement,soastoachieveaccuratepositioningpurposes;thesametimeyoucancontrolthepulsefrequencytocontrolthemotorrotationspeedandacceleration,toachievespeedcontrolpurposes.Whatkindsofsteppermotorsub-:Inthreesteppermotors:permanentmagnet(PM),reactive(VR)andhybrid(HB
3、)permanentmagnetstepperusuallytwo-phase,torque,andsmaller,stepangleof7.5degreesorthegeneral15degrees;reactionstepisgenerallythree-phase,canachievehightorqueoutput,stepangleof1.5degreesisgenerally,butthenoiseandvibrationarelarge.80countriesinEuropeandAmericahavebeeneliminated;hybridstepperisamix
4、ofpermanentmagnetandreactiveadvantages.Itconsistsoftwophasesandthefive-phase:two-phasestepangleof1.8degreeswhilethegeneralfive-phasestepangleof0.72degreesgenerally.ThemostwidelyusedStepperMotor.Whatistokeepthetorque(HOLDINGTORQUE)Howmuchprecisionsteppermotor?Whetherthecumulative:Thegeneralaccur
5、acyofthesteppermotorstepangleof3-5%,andnot-/cumulative.SteppermotortoallowtheminimumamountofsurfacetemperatureSteppermotortoallowtheminimumamountofsurfacetemperature:Steppermotorcausesthemotortemperatureistoohighthefirstmagneticdemagnetization,resultinginlossoftorquedownevenfurther,sothemotorsu
6、rfacetemperatureshouldbethemaximumalloweddependingonthemotordemagnetizationofmagneticmaterialpoints;Generallyspeaking,themagneticdemagnetizationpointsareabove130degreesCelsius,andsomeevenashighas200degreesCelsius,sothesteppermotorsurfacetemperatureof80-90degreesCelsiusisnormal.Howtodeterminethe
7、steppermotordriverDCpowersupply:A.DeterminationofthevoltageHybridsteppingmotordriverpowersupplyvoltageisgenerallyawiderange(suchastheIM483supplyvoltageof12~48VDC),thesupplyvoltageisusuallybasedontheworkofthemotorspeedandresponseto
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