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1、濱州學(xué)院專科畢業(yè)設(shè)計(jì)(外文翻譯)畢業(yè)設(shè)計(jì)（外文翻譯）英文題目ThedevelopmentandfutureofPLC中文題目PLC的發(fā)展和未來系（院）自動(dòng)化系專業(yè)電氣自動(dòng)化技術(shù)學(xué)生姓名學(xué)生姓名學(xué)生姓名學(xué)生姓名學(xué)生姓名學(xué)號(hào)學(xué)號(hào)學(xué)號(hào)學(xué)號(hào)學(xué)號(hào)指導(dǎo)教師職稱二〇一三年六月16濱州學(xué)院?？飘厴I(yè)設(shè)計(jì)(外文翻譯)ThedevelopmentandfutureofPLCPart1PLCoverviewProgrammablecontrolleristhefirstinthelate1960sintheUnitedStates,thencalledPLCprogrammablel
2、ogiccontroller(ProgrammableLogicController)isusedtoreplacerelays.Fortheimplementationofthelogicaljudgment,timing,sequencenumber,andothercontrolfunctions.TheconceptispresentedPLCGeneralMotorsCorporation.PLCandthebasicdesignisthecomputerfunctionalimprovements,flexible,genericandothera
3、dvantagesandrelaycontrolsystemsimpleandeasytooperate,suchastheadvantagesofcheappricescombinedcontrollerhardwareisstandardandoverall.Accordingtothepracticalapplicationoftargetsoftwareinordertocontrolthecontentoftheuserproceduresmemorycontroller,thecontrollerandconnectingtheaccusedcon
4、venienttarget.Inthemid-1970s,thePLChasbeenwidelyusedasacentralprocessingunitmicroprocessor,importexportmoduleandtheexternalcircuitsareused,large-scaleintegratedcircuitsevenwhenthePLCisnolongertheonlylogical(IC)judgmentfunctionsalsohavedataprocessing,PIDconditioninganddatacommunicati
5、onsfunctions.InternationalElectrotechnicalCommission(IEC)standardspromulgatedprogrammablecontrollerforprogrammablecontrollerdraftmadethefollowingdefinition:programmablecontrollerisadigitalelectroniccomputersoperatingsystem,specificallyforapplicationsintheindustrialdesignenvironment.
6、Itusedprogrammablememory,usedtoimplementlogicintheirinternalstorageoperations,sequencecontrol,timing,countingandarithmeticoperations,suchasoperatinginstructions,andthroughdigitalandanaloginputandoutput,thecontrolofvarioustypesofmachineryorproductionprocesses.Programmablecontrolleran
7、drelatedperipherals,andindustrialcontrolsystemseasilylinkedtoformawhole,toexpanditsfunctionaldesign.Programmablecontrollerfortheuser,isanon-contactequipment,theprocedurescanbechangedtochangeproductionprocesses.Theprogrammablecontrollerhasbecomeapowerfultoolforfactoryautomation,widel
8、ypopularreplication
