基于PLC的控制系统在供电系统中的应用毕业论文外文翻译.docx
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基于PLC的控制系统在供电系统中的应用毕业论文外文翻译.docx
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基于PLC的控制系统在供电系统中的应用毕业论文外文翻译
外文资料
ApplicationofControlSystemontheBaseofPLCinpower-supplysystem
Thepaperintroducesadistributedcontrolsystemofsewagetreatment,andthecoreofthesystemisPLC.Thestructureofthecontrolsystem,theassignmentandimplementationofthetasks,thecontrolschemeandthedesignconceptofprogramareexpounded.Thewayofcentralmonitoringmanagementanddispersingcontrolisusedbythecontrolsystem;thelong一distancecontrolandmonitoringoffieldequipmentareunchargedoftheuppercomputer;thesoftwareprogramofdesignsusesIntouch7.0.Thespecifictechnology,equipment,thecontrollingofmainparameterandseveralrunningdataareunchargedofthePLCstations,andthesoftwareprogramofdesignsusesConcept2.2XLwithonlinetrackingandoutlinesimulating.MB+netisadoptedbythecommunicationbetweentheuppercomputerandthePLCstations,withitssimplybuildingnet,quicklyrunningandstablecommunication.TheautomaticcontrolofPLChasbeensuccessfullycompletedinsewagetreatment,whichhasimprovedtheoperationefficiencyandmanagementlevelofsewagetreatmentequipment
IntroducedtotakePLCasthedistributetypecontrolsystemofcoreinthewastewatertreatmentsystemofapply.Concretelydescribedthestructure,missionofthecontrolsystemanallotmentandcarryout,thewayofcontrolandthethoughtoftheprogramdesign.Thewaycontroledtheconcentrationmonitorofthesystemadoptionamanagementandscatteredacontrol,theplaceofhonormachineberesponsibleforthespotthelongrangeoftheequipmentscontrolandsurveillance,softwareadoptionIntouch7.0drawup.ThePLCnativestationisresponsiblefortotheconcretecraft,equipmentsandismainlycontroledparametertocarryoncontrolandcollectvariousmovementdata,theprogramdesignadoptionhaveon-linefollowwithoff-lineimitatetheConceptoftruefunction2.2XLsoftware.PlaceofhonormachineandofthePLCadoptionsetthenetbequicklysimpleandcirculatespeed,correspondbyletterthestabilitystrongMB+net.ThewholecontrolsystemsuccessfullysolvedthePLCcontrolsaproblemintheautomationwithinwastewatertreatmentandraisedawastewatertreatmentequipmentstocirculateanefficiencyandmanagelevel.
Recently,forcarryingouthighquality,lowconsume,stabledependablemovement.Domesticandinternationalmanywastewatertreatmentfactoriesesadoptedamodernforerunnertocontroltechniqueandcalculatortechniqueandconstitutecalculatordirect,controlthus,managesystem.Makesystemexcellenttoturnmovement.Buttheprogrammablelogiccontroller(PLC)thentakemicroprocessorascore.Synthesizethecalculatortechniqueautomaticallycontrolstechniqueandcorrespondencetechniquebutdevelopsofakindofnewandingeneraluseutomaticcontroldevice.Havestructuresimple,functionsuperior,dependablesexGao,workproperlywordsingeneraluse,beeasytoplaitdistance,usageconvenienceetc.advantageetc..ThesilverChuanCitythefirstwastewatertreatmentfactoryadoptedaSBRcraftandtakePLCasthecontrolsystemofcore,dayafterhandlingthesewage10×104ttheprocessingofreachmarksewagecanusedforanagricultureirrigation.
1 Controlsystemstructure
Controlthewayof"concentrationmonitormanagement,scatteracontrol"ofthesystemadoption.Theemulationhold,placeofhonormachine,gatheralinemachine,printertoBelocatedonmediumcontrolroom,twosetPLCsarelocatedoncontrolthespot.Adoptthiskindofstructurecanmaketheinformationintheproductionlinecancentralizedmanagementwithcarryoutwholeoperation,managementwithexcellentturn.Alsomaketocontroldangerousdispersioninthemeantime,raisethesystemcredibility.
1.1 Theuppercomputers
MediumcontroltwocalculatoradoptionPIIclassworksofroomtocontrolmachine,circulatetheoperatesystemofWindowsNT.Theplaceofhonormachineberesponsibleforonthesceneestablisheachlongrangecontrol(full-automaticcontrol,automaticcontrol,ordertomoveacontrol)withsurveillance,makeuseofIntouch7.0engineeringsoftwarepackagesprovideagoodpersonmachinedialogueboundarybutobtainconcerningparameterandequipmentsappearanceinformationfromthePLCbysearchingaway,keepaviewmanifestationtocomeoutontheCRTbygoodsketchtype,printanecessarydatainthemeantimeandbeprovidedforlordtocontrolandmanagerinstructionproduce.Superviseandcontrolboundarybutincludethesystemtotaldiagram,systemcentdiagram,imitatethequantitygeneralchart,parameteraconstitution,reporttothepoliceawindow,historytrendandregisterawindowetc.boundarybut.Inthesystemtotaldiagram,circulatethepersonnelcankeepwatchonsignals,suchasallmovementappearances,equipmentstroubleandliquidwhichcontrolanequipmentsanddischarge...etc..Operateapersonnelinthesystemthecentthediagramcancarryonasinglemachinepointtomovetocirculateanoperationtoallcontrolequipmentses,becomethesetautomaticallycirculateoperationorthewholefactoriesesfull-automaticoperationcombinesurveillance.Inthemeantimeplaceofhonormachine2anddoaplaitdistanceamachine.Mediumcontrolroomtoestablishanotheraninsettypeemulationtohold,isbeenonecontrolbytheplaceofhonormachine,inordertokeepthecraftprocessoftheviewmanifestationwholefactoryandmainparametervalue.
1.2 ThePLCstand
Accordingtowastewatertreatmentoftwopart,thespotthelongrangeoftheequipmentsthecontroloutputandthespotthesignalcollecttocontrolastationcompletionfromtwoPLCwoodground.PLC1nativecontrolstationcontrolthespacegrid,sewagepromoteapumphouse,Puspirittosinksandpond'setc.toprepareaprocessingpart.ThePLC2nativecontrolstationcontrolsdirtymiretodehydrate,presstofiltermachineetc.department..PLC3nativecontrolstationcontrolSBRlivingcreatureprocessingpart.Moreover,theonthespotnativecontrolstationiseachtoestablishanoperationterminaltoestablisheach,beresponsibleforatnativetoestablisheachcontrolonthescene.(automaticcontrol,ordertomoveacontrol)
Thespotiseachthephysicalparameterthatthesupervisionorderandincludewaterlevel,temperature,dischargeandturnsoon,electriccurrent'setc.imitatequantity,fromtoinresponsetoofanappearancespreadafeelingmachineorchangetosendtoamachineexaminationtocomeoutandchangeintotheelectriccurrentsignalofthe4~20mA,throughshieldinsidethePLCthattheelectriccablesendstoeachstaturessystem,fromthePLCpicksupapeoplethroughvariousmoldpiecesampletelecommunicationnumber.Same,imitatequantitycontrolthesignalsendtoperformanceorganizationbythe4~20mAelectriccurrentformafterbeingoutputbythePLC,controlperformanceorganizationofaction.
TheModiconQuantumseriesPLCofSchneidercompanyissatisfyliberalof,accordingtostandardofnetworkconjunctionandthespottotallineconjunctionetc.applicationthetechniqueprovidedvariousnetworkachoice,supportModbus,Mod-busPlus(MB+),thelongrangeI/0,TCP/IPetc.networkconjunction,havestrongerandvivid.Therefore,thewastewatertreatmentisconvenienttoarriveofthePLCchoosetheseriesofModiconOuantumofuseSchneider.
1.3 Correspondences
MB+agreementistheModiconcompanyreleaseofanopentypeoftheadoptionIEEE802.4correspondbyletter5agreementsthespottotallineofcardagreement.MB+thenetworktogetherothernetworkscomparetohaveasetofnetsimple,theinvestmentbelittle,networkspeedquick,correspondencethestabilitystrongetc.characteristics,itmakecalculator,controllerandotherdatasourcesthroughanusagedoublewringlineorfiberopticcableBeabodytotogethercarryoncorrespondenceatthewholenetworktop.ButtheCPUmoldpieceoftheModiconQuantumseriesPLCimplyMB+correspondence,thereforecorrespondbyletteranetworktochoosetouseMB+network.Mediumcontroltwomachine,twocontrolstationswithnativePLCofroomtopassMB+thenetworklinktogether.ThePLCCPUmoldpiecepassesMB+correspondenceandtwomachinescarryondatacommutationandcollecttheplaceofhonorsupervisionvariousoperationinstructionofthesystemandthespottheexaminationsignalanddata,throughanalysishandle,passexportationmoldpiecetocontrolobjectoutputcontrolsignal;Inthemeantime,thePLCpassesMB+netupwardthemachinereturntovariousdata,placeofhonormachinelogarithmsaccordingtocarryonanoperationprocessing,showvarioussignalandprintvariousstatement.
2 ThedesignofPLCcontrolprogram
Thesystemhasfourkindsofcontrolmethods:
Thenativehandmovesacontrol,singlesetequipmentspointmovesacontrol,becomeaset,theequipmentsautomaticallycontrols,thewholefactoryequipmentsfull-automaticcontrol.Twokindsofex-withgeneralmethodsatestablisheachadjusttotryormaintainusage,thesystemismainlycirculatewithfull-automaticcontrol.Underthiskindofway,alleachkindofequipmentsesfromPLCaccordingtoinadvancedrawupofprocedureautocontrol,don'tneedtooperateapersonnelanintervention.VariousspotdataspreadsahighestmachinethroughaPLC,comeoutintheplaceofhonoronboarddescriptionandmakethecraft,equipmentsmovementofwholefactoriesesgetanoverallcontrol.
ThelivingcreatureprocessingpartofthePLC3stationcontrolisthewholewastewatertreatmentofkeypart,belimitedbyspace,onlywiththePLC3standofprogramdesignforexample.
2.1 Processofcontrol
ThePLC3stationseswereusetocontroltogetintoPuspiritfromsewage,thepondiseverywheresewagerunoffPuaftermanagespiritthewholeprocessofthe
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