1、附件2:外文原文ProgrammableControllerDesignedforElectro-pneumaticSystemsSummarythisitemismainlytheprocedurewhichstudieselectricitysystemandinbriefvalidcontrolcurrentofairtolaunchmachinetocompatiblyflowtheappearanceofsystem.Itofthefulfillmentfoundationincludeaccordingtothecontrolprocedureofparticularlyhaveo

2、fthecurrentofaircontroller,automationdesign,currentofairsystemanddesignaccordingtotheelectronicsofthetinycontroller.1. BriefintroductionTheautomationwhichusesanelectricitytechniquemainlyconstitutesto.from3part:Launchmachineormotor,sensororbutton,theformiszeropartsessuchasthecontrolofflowerpetal.Now,

3、greatlypartofsystemlogicthecontrollersoftheoperationdriveallprocedurelogiccontroller(PLC)replace.PLCsensorandswitch'saringanimportationtocarry,butlaunchthedirectcontrolvalveofmachineisanexportationtocarryandhaveaninternalproceduretooperateamongthemallcirculateessentiallogic,imitateotherdevicesli

4、kecalculator,infixedtimemachineetc.,carryonacontroltothewholemovementappearanceofsystem.Canaccordingtoneednumeroustimetoestablishandimitatethusofsystem,soallfromPLCusage,thisitemcontainsvividadvantage.Thereforecansavetime,thedangerofdecreaseerror,inthemeantimeunderthesistuationthatusesamematerial,it

5、canbegettingmoreprecise.ManycompanythatisonthemarketusedthePLCofnormalregulationsanditcannotonlycontrolwiththecurrentofairsystem,butalsocanusevariouselectricityequipments.PLCwiderangeofapplication,canbeapplyinmuchindustrytoproducemedium,evenusedforsafetyandautomationofbuildingin.Becauseofabovevariou

6、scharacteristic,thePLCprovidedalotofresourcesesinsomelyphysicallyappliedly,evenincludenotaresourcesofcontrolthesystemandtheelectricitysystemwasakindofapplicationlikethis.Fortheengineeringofautomation,thePLCusageismoreexpensive,particularlyistothosesmallscaledsystems.Aimatthiskindofcircumstance's

7、akindofviablewayestablishacontrollerthatcanprovideparticularsizeandfunction.Thiskindofcontrollercancreateaccordingtothetinycontroller.Thiskindofappliesscopeaccordingtothetinycontrollersmaller,themachinethatcanusedforatypeperhapscanusetodoabelikethecommonPLCissimilarandcanbewovenadistanceofcontroller

8、,soitcanpassvariableturnoflogicproceduretocarryonvarioushomework.Allofthesecharacteristicbasisconcretedemandofdissimilaritybutdissimilarity,concreteofdesignofempiricalofdissimilaritybutdissimilarity.Butthemainadvantageofthiskindofdesignlieindesigningapersonneltounderstandanowncontrollerverymuch,canf

9、reelycontrolthebigbabysizeofcontroller,changeitoffunction.Thismeansthatthisitemcontainsmorespecial,butinthemeantimethecontrolofsystemalsofromitofdesigncontrol.2. ElectricitysystemPeoplecanfindouttospeakofinthreeprecedingcontextsfromanautomationofbasicparts,theinadditionisalogiccircuitwhichcontrolssy

10、stem.Thetechniqueofonlymatureforerunnercansmakeaparticularlogiccircuitandperformancethepartsthatexactitudeneedwhenoperatetogetstripe.Forasimplesport,thesystemautoprocedurecancomplete,butforindirectormorecomplicatedsport,theprocedureofsystemwillproducecomplicatedcircuitandfalsesignal.Thisisneedanothe

11、rmethodcansavetime,produceclearcircuit,cankeepaccidentalsignalfromhandoverfoldtostopwithcircuit.Thelineroadbedmethodofdifferentstandardofthiskindofwaycallfollowthesequenceandadvancegraduallytypeorrulesystem,ittothecurrentofairandtheelectricitysystemveryvalid,andisalsoafoundationofthisitem.Itincludea

12、ccordingtolaunchthesystemoffoundationthatthemachineappearanceeachdissimilarityvarietyestablish.4Skan餐事金1*uiI-fiwTgIt4A尸mmdi.%、nL:mThesquareoneiseachcircuitthatthestepdesignsthosekindsofstandards.Thesecondstepisaconjunctiontoreceivetocomefromsensorandtheswitchsendstheairorthefaxtothesupplylineofeachs

13、tepinthemeantimewithprevioussportsignal.Ifshowinthediagram,1with2standardcircuitsisacurrentofairofwiththeelectricitysystemserve.Wecanknowverymuchofseeeachonestepsuddenlywiththecontactoftheofnextstep.3. TheappliedprincipleofcontrollerinnerpartTheabove-mentionedmethodcanmakeeachsportoflaunchthemachine

14、nicelydefinedwiththestep.Thisbealsoanewappearancewhichsaysthattheeverysportvarietiesoflaunchthemachinesaresystems,butthechangeofoftwodifferentappearancesbecalledastep.Thestandardcircuitwhichspeaksofintimesbeforecantheinaidofdesignpersonneldefinedifferentappearancedifferentfromwhatthevarietyofdiffere

15、ntstepbringenvironmentofsystem.Theendstageindesignwillhaveasequenceandexplicitinputandoutputwhichneverchangestocarryinthesystem.Wecarryasequenceisfromtheimportationtheimportationbethroughconversioncarriedexportationbytheexportation.Allprocessesofthesestepscarryoninthetinycontrollerinnerpart,andwiths

16、ameofthewayiscirculate.Thesequenceofpartsisprogramby5bytesinthecontroller;Eachpartcontainsastepstructureofprocedure.Theimportationcarriestwobytes,theexportationcarries1,andpartofandadditionalfunctionstepsofotherstructurecontain2.Afterweavedistance,thepartssequenceisstorebytherememberofinternalandtin

17、ycontroller,therefore,theyarereadableandcancirculate.DifferfromtraditionalPLC,theworkpurposeofthiskindofcontrolleristobecomeparticularrealmtodesignofusecontrollermore.ThesystemoftraditionalPLC'scirculatingprocedureisacircuitofcirculation:Inputapicture,circulateallinternalprocedures,thengetstripe

18、output'sappearance.Thiscontrollerworkindifferentway,itreadthestructureofstep,waitforanimportation,thengetstripeoroutput,thendirectlyjumpupnextstep,startanotherproceduremovement.Ithasalreadylimittedsexaswell,forexamplethiskindofcontrollersometimesdoesn'tcarryoutinstruction,willappearacertainm

19、ovementagainandagainanetc.undersameprocedureinstruction,butthisproblemcanresolvethroughanexteriorlogicmovement.Moreover,thiswinthecontrollerishavenosequenceofthesystemtopcan'tbeapplyenough.Theselimitsexisalsothissystemofcharacteristic,eachapplicationsofthiskindofsystemhavetoincludehomologoussyst

20、emanalysis.4. ThespecialfeaturesofthecontrollerThiskindofcontrollertakestinytinycontrollerPIC16F877oftheintegratedcircuitasfoundationanditownsalltheresourcesneedbythissubitem.IthasanenoughsocketandthecircuitcontinuouscommunicationEEPROMmemorygivesrelieftoallstructureofthesystemandthesequenceoftheste

21、p.Itprovidedthemovementofhavingsneedbyitem,forexampleinfixedtimemachinewithdivergeetc.Wedidtheresourcescatalogueofcontroller,wanttomakeitchangepossiblyofperfect.Inthemovementprocessofstep,theprocedureautomaticallychooseshowtoreadaneachonestepsuddenlyofstructure.Thisoperationhastwobytestobelocatedona

22、nelectronicsimportation.Abyteisalsolocatedonexportationtocarry,have1tobeusedtoinnerpartinfixedtimeamachine,similarinputorpausefunction.TheEEPROMmemoryinnerpartis256bytes,canstoreallmovementsofsteps,thenwithallmovementsofwhichstores48steps.Inadditiontoaninteractivemenu,thiskindofcontrollerstillhasaco

23、ntrolsetandsomeinstructiontopressbuttonandtheycontrolthemovementofeachsteptogetherwithcontinuousandalsocontrolalittlebitotherdevices.4.1 handoverwitheachotherafunctionAtactualcirculateinoperation,thecontrollerneedssomeassistanceequipmentsestohelpitandtheusercarryoninteraction,canprovidedependableofo

24、perationsupervision,carryonalogiccontroltothecurrentofairsysteminthemeantime.Handovertowitheachotherworkmode:Inthemainprocedure,theusercansendoutsignaltocarryontheoperationofconcretestepaccordingtotheinstructionTheLCDterracecanshowtheappearanceofsystemwork,measureanimportation,output,timerandcircula

25、teofdataetc.ThevoiceofDiDiisusetohintimportantcaution,stop,thetakeplaceofbeginningandsomeurgentcircumstancesbrightlightmeanstoconnectpowersupply,withimportation,outputappearance.4.2 safetiesIfwanttonormallycirculateprocedure,havetopromiseeachperformancewithallcorrectstep.Moreimportant,shouldthereisp

26、reventioncirculatingtobreakdownandproblemofresolveamethod.Thecontrollerprovidedthiskindofpossibilityandpassedtousetwointernalandvirtualcircuitstocirculateinthemeantime.Theycanre-startprocedureandrecovertheoriginalappearanceofprocedureatanytime.Therearetwoimportationscarryingacommonworkcanquicklycirc

27、ulatethesefunctions.4.3 connectTheproceduremovementsequencecanuseconnectofcontrollertoweaveadistance.Asetcalculatorconnectsandcanalsousetogetstripeusageprocedure.Theusercanmakeuseoftoconnecttoinstallaseriesofstepsbyteswhichdefineasequence.Butcanalsodesignaprocedure,theexploitationcantreatresourcesas

28、theinformationthatuserneedwhentranslate.But,ifwantcombiningacomputerconnectsandcontroller,shouldhaveaninstrumenttothecredibilityoftheassurancedataatleast.4.4 .FirmwareMainlinewreathispasstoreadEEPROMmemoryinofeachinformationstepcarryonawork.Ineachstep,theappearanceofsystemisstoreanditalsoisshowonthe

29、displayinthemeantime.Accordingtothestructureofuser,itcanmakeuseofrepositionofredundantpersonnelorpausetocopewithanurgentcircuitcircumstancetopromiseasystemsafety.5. ElectricitysystemexampleThiskindofsystemismuchmorethananorientationattheparticularmachine.Itconstitutesto°fromfouractivemachines.T

30、heactivemachineA,BandCaredoubleandonlytheDbedoublyalist.Squareone,theactivemachineAstartscirculate,andkeepinaparticularpositionuntilabeoverofcirculation,suchasfigure5showitcanmakesuresomeoneobjectofunderonesport.Thesecondstep,wasAtocompleteitofworkafter,theactivemachineCistogetherwiththeBstarttogeth

31、ermanycreationelectriccurrentaturnpossibly,andbesubjectedtotherestrictionofBmovementspeed,buttheBspeedbelivedapetalmanagementbyacontroloffluxion.BandCisworktogetherofactivemachineofexample,betheBslowlypushesanobjectoftime,theCsometimesthenrepeatsitofwork.blf5I恫XdiMrranifcMA,CaiidI>Thethirdstep,be

32、thepositiontimethattheBarrivesanend,theCisimmediatelystopitofthecirculationexerciseandreturntothepositionofbeginning.TheactivemachineDthattheelectriccurrentthattheexploitationreturnworktogetherwithreturnoftheCworkstogether.Thefourthstep,theactivemachineDquicklygoesbackandforthareturntoexerciseonce.T

33、heDcanactasatool,thesuperficialdozenthatisontheobjecthole.WhentheDreturnstothepositiontimeofbeginning,ANandBalsoreturninthemeantimeandthisbethefifthstep.Diagram6showedprogramdesignthefirstpart.Weknowtogetherasallmovementsofeachstep.(A+)meanthattheactivemachineApushesforward,but(A-)meanstoreturntothe

34、positionofbeginning.Sportofthesimultaneouswithistogetherfoldtoaddinthesamestep.Thissystemtotallyhasfivesteps.I1ic6SkpsuqutfitiA,RCdidD"tuienDiagram5circulatewith6systemsforexpressclearofdescribedallsequences.Makeuseofthem,wecandesignwiththeessentiallogiclanguagewholeofcontrolcircuit.Butnowretur

35、nitnotjustanintegrityofsystem,becauseitisstillinneedofsomeassistancefacilities,.(diagraminshow)Circulatetotheendofprocedure,theseassistancefacilitiesesareveryimportant,becausetheycanmakethecircuithavemorefunctions.Theywinthemostimportantisaconjunctionineachlytheonestepsuddenlyofparallelcircuit.Thatc

36、ircuitcanstopasequenceandchangetheappearanceofactivemachineintoaparticularpositionatanytime.Itcanheavysystemorcopewithanurgentcircumstance.Diagram7with8whattoshowsbesomeresultsthatwilltakeplaceunderthesistuationthathavenousagecontroller.Thesephotographsaretheelectricitychartswhichcontrolscircuit,inc

37、ludesensor,controlkeyandgiveorgetanelectricshockoflivepetalbook.TuoMartbuttonsAulaManualcircuitRc%rfcircuitFig7.Eludncdiagramoitkasnpk*»丁wgHfarl卜國才Qms一一一AhUioManual-circuit-*K匚iTtu”J'-iif-H-LLgI:d-iaurABiiuf-ih£hilUj-Moreoversomeassistancefacilitiesalsoincludeinthissystem,theforexample

38、automaticmachine/handmovestoadjusttocontrolamachine,theycanmakesystemcontinuousofcirculatingwork;Twobeginningcontrolkeys,theycanlettheoperatorhandmoveabeginningofcontrolthesystemwithstop,soreducedtotakeplaceanaccidentofdanger.6. TheuserchangesanexampleprogrammingCurrentofaircoilforethenoodleshasalre

39、adyelaboratedon:Itcanletusunderstandtocontroltheconditionthatasystemneedandthatisintheactualmovementinsystemandhavetoprovideallfunctionfacilities.But,suchasbeforespeakofofso,useaPLCorparticularcontroller,thiskindofcontrolbecomesmoreeasyof,andthenicetyofthesystemwillalsoraise.TheusagetraditionalPLCof

40、,suchasfigure7,8show,noticewhiledrawelectricitychartofconnectthelogicofcircuit.Theusageisthiskindofprogrammablecontrollerandtheuserneedstoknowtocirculatetheideaofthemethodandthestructureoftheprogrammingeachstep.Thatistosay,usetraditionalPLC,theuserknowstherelationofofeachoperation.Underthegeneralcircumstance,Usercanbeforeconnectingapeople'stoptocirculate1