步进电机的知识单片机大学毕业论文英文文献翻译及原文Word文档下载推荐.docx

步进电机的知识单片机大学毕业论文英文文献翻译及原文Word文档下载推荐.docx

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步进电机的知识

文献、资料英文题目：

Knowledgeofthesteppermotor

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翻译日期：

2017.02.14

外文文献：

Whatisasteppermotor：

Steppermotorisakindofelectricalpulsesintoangulardisplacementoftheimplementingagency.Popularlittlelesson:

Whenthedriverreceivesasteppulsesignal,itwilldriveasteppermotortosetthedirectionofrotationatafixedangle（andthestepangle）.Youcancontrolthenumberofpulsestocontroltheangulardisplacement,soastoachieveaccuratepositioningpurposes;

thesametimeyoucancontrolthepulsefrequencytocontrolthemotorrotationspeedandacceleration,toachievespeedcontrolpurposes.

Whatkindsofsteppermotorsub-：

Inthreesteppermotors:

permanentmagnet（PM）,reactive（VR）andhybrid（HB）permanentmagnetstepperusuallytwo-phase,torque,andsmaller,stepangleof7.5degreesorthegeneral15degrees;

reactionstepisgenerallythree-phase,canachievehightorqueoutput,stepangleof1.5degreesisgenerally,butthenoiseandvibrationarelarge.80countriesinEuropeandAmericahavebeeneliminated;

hybridstepperisamixofpermanentmagnetandreactiveadvantages.Itconsistsoftwophasesandthefive-phase:

two-phasestepangleof1.8degreeswhilethegeneralfive-phasestepangleof0.72degreesgenerally.ThemostwidelyusedStepperMotor.

Whatistokeepthetorque（HOLDINGTORQUE）

Howmuchprecisionsteppermotor?

Whetherthecumulative：

Thegeneralaccuracyofthesteppermotorstepangleof3-5%,andnotcumulative.

Steppermotortoallowtheminimumamountofsurfacetemperature

Steppermotortoallowtheminimumamountofsurfacetemperature：

Steppermotorcausesthemotortemperatureistoohighthefirstmagneticdemagnetization,resultinginlossoftorquedownevenfurther,sothemotorsurfacetemperatureshouldbethemaximumalloweddependingonthemotordemagnetizationofmagneticmaterialpoints;

Generallyspeaking,themagneticdemagnetizationpointsareabove130degreesCelsius,andsomeevenashighas200degreesCelsius,sothesteppermotorsurfacetemperatureof80-90degreesCelsiusisnormal.

HowtodeterminethesteppermotordriverDCpowersupply：

A.Determinationofthevoltage

Hybridsteppingmotordriverpowersupplyvoltageisgenerallyawiderange（suchastheIM483supplyvoltageof12~48VDC）,thesupplyvoltageisusuallybasedontheworkofthemotorspeedandresponsetotherequesttochoose.Ifthemotoroperatingspeedhigherorfasterresponsetotherequest,thenthevoltagevalueishigh,butnotethattheripplevoltagecannotexceedthemaximuminputvoltageofthedrive,oritmaydamagethedrive.

B.DeterminationofCurrent

PowersupplycurrentisgenerallybasedontheoutputphasecurrentdriveItodetermine.Ifalinearpowersupply,powersupplycurrentisgenerallypreferable1.1to1.3timestheI;

ifweadopttheswitchingpowersupply,powersupplycurrentisgenerallypreferabletoI,1.5to2.0times.

Themaincharacteristicsofsteppingmotor：

Asteppermotordrivecanbeaddedoperatepulsedrivesignalmustbenopulsewhenthesteppermotoratrest,suchas

Ifaddingtheappropriatepulsesignal,itwilltoacertainangle（calledthestepangle）rotation.Rotationspeedandpulsefrequencyisproportionalto.

2Dragonstepanglesteppermotorversionis7.5degrees,360degreesaround,takes48pulsestocomplete.

3steppermotorhasinstantstartandrapidcessationofsuperiorcharacteristics.

Changethepulseoftheorderof4,youcaneasilychangethedirectionofrotation.

Therefore,thecurrentprinters,plotters,robotics,andsodevicesarethecoreofthesteppermotorasthedrivingforce.

Steppermotorcontrolexample

Weusefour-phaseunipolarsteppermotorasanexample.ThestructureshowninFigure1:

Fourfour-phasewindingleads（asopposedtophaseA1A2B1phasephaseB2）andtwopubliclines（tothepowerofpositive）.Thewindingsofonephasetothepoweroftheground.Sothatthewindingswillbeinspired.Weusefour-phaseeight-beatcontrol,ie,1phase2phasealternatingturn,wouldenhanceresolution.0.9°

perstepcanbetransferredtocontrolthemotorexcitationistransferredinorderasfollows:

Iftherequirementsofmotorreversal,thetransmissionexcitationsignalcanbereversed.2controlscheme

Controlsystemblockdiagramisasfollows

TheprogramusesAT89S51asthemaincontroldevice.ItiscompatiblewiththeAT89C51,butalsoincreasedtheSPIinterfaceandthewatchdogmodule,whichnotonlymakesthedebuggingprocessbecomeseasyandalsomorestable.Themicrocontrollerintheprogrammainlyforfieldsignalacquisitionandoperationofthesteppermotortocalculatethedirectiona