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1、本科毕业论文翻译步进电机知识KNOWLEDGEOFTHESTPPERMOTOR学院（部）：电气与信息工程学院专业班级：电气08-5班学生姓名：指导教师：高昕副教授2012年6月1日17KNOWLEDGEOFTHESTPPERMOTORWhatisasteppermotor？Steppermotorisakindofelectricalpulsesintoangulardisplacementoftheimplementingagency.Popularlittlelesson:Whenthedriverreceivesasteppulsesigna
2、l,itwilldriveasteppermotortosetthedirectionofrotationatafixedangle(andthestepangle).Youcancontrolthenumberofpulsestocontroltheangulardisplacement,soastoachieveaccuratepositioningpurposes;thesametimeyoucancontrolthepulsefrequencytocontrolthemotorrotationspeedandacceleration,toa
3、chievespeedcontrolpurposes.Whatkindsofsteppermotorsub?Inthreesteppermotors:permanentmagnet(PM),reactive(VR)andhybrid(HB)permanentmagnetstepperusuallytwo-phase,torque,andsmaller,stepangleof7.5degreesorthegeneral15degrees;reactionstepisgenerallythree-phase,canachievehightorqueou
4、tput,stepangleof1.5degreesisgenerally,butthenoiseandvibrationarelarge.80countriesinEuropeandAmericahavebeeneliminated;hybridstepperisamixofpermanentmagnetandreactiveadvantages.Itconsistsoftwophasesandthefive-phase:two-phasestepangleof1.8degreeswhilethegeneralfive-phasestepangl
5、eof0.72degreesgenerally.ThemostwidelyusedStepperMotor.Whatistokeepthetorque(HOLDINGTORQUE)?Holdingtorque(HOLDINGTORQUE)isthesteppermotorpowerbutnorotation,thestatorlockedrotortorque.Itisthesteppermotoroneofthemostimportantparameters,usuallywhenthesteppermotortorqueatlowspeedne
6、artheholdingtorque.Asthesteppermotor'soutputtorqueincreaseswiththespeedandcontinuousattenuation,outputpowerincreaseswiththespeedchange,sokeepthetorquesteppermotortobecomeameasureofoneofthemostimportantparameters.Forexample,whenpeoplesay2N.mthesteppermotorincaseofnospecialnotei
7、stheholdingtorqueofthesteppermotorforthe2N.m.WhatisDETENTTORQUE？DETENTTORQUEisthesteppermotorisnotenergized,thestatorlocked17rotortorque.DETENTTORQUEtranslationinthecountrythereisnouniformway,easytomisunderstandus;thereactionisnotapermanentmagnetsteppermotorrotormaterial,soitd
8、oesnotDETENTTORQUE.Howmuchprecisionsteppermotor?Thegeneralacc
