机械专业英文文献可编程控制器设计的电致动系统.docx

机械专业英文文献可编程控制器设计的电致动系统.docx

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机械专业英文文献可编程控制器设计的电致动系统

附件2：

外文原文

ProgrammableControllerDesignedfor

Electro-pneumaticSystems

Summarythisitemismainlytheprocedurewhichstudieselectricitysystemandinbriefvalidcontrolcurrentofairtolaunchmachinetocompatiblyflowtheappearanceofsystem.Itofthefulfillmentfoundationincludeaccordingtothecontrolprocedureofparticularlyhaveofthecurrentofaircontroller,automationdesign,currentofairsystemanddesignaccordingtotheelectronicsofthetinycontroller.

1.Briefintroduction

Theautomationwhichusesanelectricitytechniquemainlyconstitutesto.from3part:

Launchmachineormotor,sensororbutton,theformiszeropartsessuchasthecontrolofflowerpetal.Now,greatlypartofsystemlogicthecontrollersoftheoperationdriveallprocedurelogiccontroller（PLC）replace.PLCsensorandswitch'saringanimportationtocarry,butlaunchthedirectcontrolvalveofmachineisanexportationtocarryandhaveaninternalproceduretooperateamongthemallcirculateessentiallogic,imitateotherdeviceslikecalculator,infixedtimemachineetc.,carryonacontroltothewholemovementappearanceofsystem.

Canaccordingtoneednumeroustimetoestablishandimitatethusofsystem,soallfromPLCusage,thisitemcontainsvividadvantage.Thereforecansavetime,thedangerofdecreaseerror,inthemeantimeunderthesistuationthatusesamematerial,itcanbegettingmoreprecise.

ManycompanythatisonthemarketusedthePLCofnormalregulationsanditcannotonlycontrolwiththecurrentofairsystem,butalsocanusevariouselectricityequipments.PLCwiderangeofapplication,canbeapplyinmuchindustrytoproducemedium,evenusedforsafetyandautomationofbuildingin.

Becauseofabovevariouscharacteristic,thePLCprovidedalotofresourcesesinsomelyphysicallyappliedly,evenincludenotaresourcesofcontrolthesystemandtheelectricitysystemwasakindofapplicationlikethis.Fortheengineeringofautomation,thePLCusageismoreexpensive,particularlyistothosesmallscaledsystems.

Aimatthiskindofcircumstance'sakindofviablewayestablishacontrollerthatcanprovideparticularsizeandfunction.Thiskindofcontrollercancreateaccordingtothetinycontroller.

Thiskindofappliesscopeaccordingtothetinycontrollersmaller,themachinethatcanusedforatypeperhapscanusetodoabelikethecommonPLCissimilarandcanbewovenadistanceofcontroller,soitcanpassvariableturnoflogicproceduretocarryonvarioushomework.Allofthesecharacteristicbasisconcretedemandofdissimilaritybutdissimilarity,concreteofdesignofempiricalofdissimilaritybutdissimilarity.Butthemainadvantageofthiskindofdesignlieindesigningapersonneltounderstandanowncontrollerverymuch,canfreelycontrolthebigbabysizeofcontroller,changeitoffunction.Thismeansthatthisitemcontainsmorespecial,butinthemeantimethecontrolofsystemalsofromitofdesigncontrol.

2.Electricitysystem

Peoplecanfindouttospeakofinthreeprecedingcontextsfromanautomationofbasicparts,theinadditionisalogiccircuitwhichcontrolssystem.Thetechniqueofonlymatureforerunnercansmakeaparticularlogiccircuitandperformancethepartsthatexactitudeneedwhenoperatetogetstripe.

Forasimplesport,thesystemautoprocedurecancomplete,butforindirectormorecomplicatedsport,theprocedureofsystemwillproducecomplicatedcircuitandfalsesignal.Thisisneedanothermethodcansavetime,produceclearcircuit,cankeepaccidentalsignalfromhandoverfoldtostopwithcircuit.

Thelineroadbedmethodofdifferentstandardofthiskindofwaycallfollowthesequenceandadvancegraduallytypeorrulesystem,ittothecurrentofairandtheelectricitysystemveryvalid,andisalsoafoundationofthisitem.Itincludeaccordingtolaunchthesystemoffoundationthatthemachineappearanceeachdissimilarityvarietyestablish.

Thesquareoneiseachcircuitthatthestepdesignsthosekindsofstandards.Thesecondstepisaconjunctiontoreceivetocomefromsensorandtheswitchsendstheairorthefaxtothesupplylineofeachstepinthemeantimewithprevioussportsignal.Ifshowinthediagram,1with2standardcircuitsisacurrentofairofwiththeelectricitysystemserve.Wecanknowverymuchofseeeachonestepsuddenlywiththecontactoftheofnextstep.

3.Theappliedprincipleofcontrollerinnerpart

Theabove-mentionedmethodcanmakeeachsportoflaunchthemachinenicelydefinedwiththestep.Thisbealsoanewappearancewhichsaysthattheeverysportvarietiesoflaunchthemachinesaresystems,butthechangeofoftwodifferentappearancesbecalledastep.

Thestandardcircuitwhichspeaksofintimesbeforecantheinaidofdesignpersonneldefinedifferentappearancedifferentfromwhatthevarietyofdifferentstepbringenvironmentofsystem.Theendstageindesignwillhaveasequenceandexplicitinputandoutputwhichneverchangestocarryinthesystem.Wecarryasequenceisfromtheimportationtheimportationbethroughconversioncarriedexportationbytheexportation.

Allprocessesofthesestepscarryoninthetinycontrollerinnerpart,andwithsameofthewayiscirculate.Thesequenceofpartsisprogramby5bytesinthecontroller;Eachpartcontainsastepstructureofprocedure.Theimportationcarriestwobytes,theexportationcarries1,andpartofandadditionalfunctionstepsofotherstructurecontain2.Afterweavedistance,thepartssequenceisstorebytherememberofinternalandtinycontroller,therefore,theyarereadableandcancirculate.

DifferfromtraditionalPLC,theworkpurposeofthiskindofcontrolleristobecomeparticularrealmtodesignofusecontrollermore.ThesystemoftraditionalPLC'scirculatingprocedureisacircuitofcirculation:

Inputapicture,circulateallinternalprocedures,thengetstripeoutput'sappearance.Thiscontrollerworkindifferentway,itreadthestructureofstep,waitforanimportation,thengetstripeoroutput,thendirectlyjumpupnextstep,startanotherproceduremovement.

Ithasalreadylimittedsexaswell,forexamplethiskindofcontrollersometimesdoesn'tcarryoutinstruction,willappearacertainmovementagainandagainanetc.undersameprocedureinstruction,butthisproblemcanresolvethroughanexteriorlogicmovement.Moreover,thiswinthecontrollerishavenosequenceofthesystemtopcan'tbeapplyenough.Theselimitsexisalsothissystemofcharacteristic,eachapplicationsofthiskindofsystemhavetoincludehomologoussystemanalysis.

4.Thespecialfeaturesofthecontroller

ThiskindofcontrollertakestinytinycontrollerPIC16F877oftheintegratedcircuitasfoundationanditownsalltheresourcesneedbythissubitem.IthasanenoughsocketandthecircuitcontinuouscommunicationEEPROMmemorygivesrelieftoallstructureofthesystemandthesequenceofthestep.Itprovidedthemovementofhavingsneedbyitem,forexampleinfixedtimemachinewithdivergeetc..

Wedidtheresourcescatalogueofcontroller,wanttomakeitchangepossiblyofperfect.Inthemovementprocessofstep,theprocedureautomaticallychooseshowtoreadaneachonestepsuddenlyofstructure.Thisoperationhastwobytestobelocatedonanelectronicsimportation.Abyteisalsolocatedonexportationtocarry,have1tobeusedtoinnerpartinfixedtimeamachine,similarinputorpausefunction.TheEEPROMmemoryinnerpartis256bytes,canstoreallmovementsofsteps,thenwithallmovementsofwhichstores48steps.

Inadditiontoaninteractivemenu,thiskindofcontrollerstillhasacontrolsetandsomeinstructiontopressbuttonandtheycontrolthemovementofeachsteptogetherwithcontinuousandalsocontrolalittlebitotherdevices.

4.1handoverwitheachotherafunction

Atactualcirculateinoperation,thecontrollerneedssomeassistanceequipmentsestohelpitandtheusercarryoninteraction,canprovidedependableofoperationsupervision,carryonalogiccontroltothecurrentofairsysteminthemeantime.

Handovertowitheachotherworkmode:

Inthemainprocedure,theusercansendoutsignaltocarryontheoperationofconcretestepaccordingtotheinstruction

TheLCDterracecanshowtheappearanceofsystemwork,measureanimportation,output,timerandcirculateofdataetc..

ThevoiceofDiDiisusetohintimportantcaution,stop,thetakeplaceofbeginningandsomeurgentcircumstancesbrightlightmeanstoconnectpowersupply,withimportation,outputappearance.

4.2safeties

Ifwanttonormallycirculateprocedure,havetopromiseeachperformancewithallcorrectstep.Moreimportant,shouldthereispreventioncirculatingtobreakdownandproblemofresolveamethod.Thecontrollerprovidedthiskindofpossibilityandpassedtousetwointernalandvirtualcircuitstocirculateinthemeantime.Theycanre-startprocedureandrecovertheoriginalappearanceofprocedureatanytime.Therearetwoimportationscarryingacommonworkcanquicklycirculatethesefunctions.

4.3connect

Theproceduremovementsequencecanuseconnectofcontrollertoweaveadistance.Asetcalculatorconnectsandcanalsousetogetstripeusageprocedure.Theusercanmakeuseoftoconnecttoinstallaseriesofstepsbyteswhichdefineasequence.Butcanalsodesignaprocedure,theexploitationcantreatresourcesastheinformationthatuserneedwhentranslate.But,ifwantcombiningacomputerconnectsandcontroller,shouldhaveaninstrumenttothecredibilityoftheassurancedataatleast.

4.4.Firmware

MainlinewreathispasstoreadEEPROMmemoryinofeachinformationstepcarryonawork.