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

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