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.docx
- 文档编号:2786027
- 上传时间:2022-11-15
- 格式:DOCX
- 页数:15
- 大小:75.27KB
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.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.docx》由会员分享,可在线阅读,更多相关《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.docx(15页珍藏版)》请在冰豆网上搜索。
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
毕业设计(论文)
外文文献翻译
文献、资料中文题目:
步进电机的知识
文献、资料英文题目:
Knowledgeofthesteppermotor
文献、资料来源:
文献、资料发表(出版)日期:
院(部):
专业:
班级:
姓名:
学号:
指导教师:
翻译日期:
2017.02.14
外文文献:
Knowledgeofthesteppermotor
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
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 步进 电机 知识 单片机 大学毕业 论文 英文 文献 翻译 原文