PLC的控制优势 毕业论文外文翻译

《PLC的控制优势 毕业论文外文翻译》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、唐山学院毕业设计外文资料PLCcontroladvantageAnycontrolsystemfromconcepttoenterfactoryworkhavetoundergofourstages.PLCsystemineachstagehasadvantage.Thefirststageisdesignedtoplantneeds,studyandformulatecontrolstrategy,thetraditionaloperatingplatformdesignandmanufacturemustbefinishedbeforeindesign.PLCsystemju

2、stneedisavagueaboutthesizeofthemachinemayideaandI/Onumberofrequirements(muchinputandoutputinterface).Inthisphaseinputandoutputchipverycheap,socanabuilt-inverysoundreservecapacity,itallowsusedtosupplementomissionforfutureexpansionprojectandprepareit.Secondly,thetraditionaldesignschemeis,everyj

3、obisa"oncemoldings"theinevitablecausedengineeringdelaysandincreasecosts.APLCsystemsusethesimpleststandardbolttogether.InsuchaconnectionnextbeganwritingPLCprogram(oratleasttheprogramcodes)writedetailed.Thenextstageistoinstall,installationisakindofcomplicatedandexpensivework,suchastheinstallsen

4、sors,actuators,limitswitchsystemandthehostofconnection.DistributedPLCsystemsuseseriallinkstypepre-compiled,testinginterfacecanbesimplifiedinstallithavecomeatahugecostadvantage.PLCprogrammostinthisstagefinish.Finallycommissioning,andthisiswhatistheadvantageofPLCrealwereexcavatedpart.Withoutany

5、equipmentinthefirstwouldworknormally.Suchishumannature,there'ssomeomissions.Andthetraditionalsystemchanges,comparedthetime-consumingandexpensivePLCdesignerprovidedsystembuilt-inbackupmemoryreserves,spareI/Oandsomesparemuchcorecable,mostofthechangestocanbequicklyandrelativelycheapcompleted,ano

6、therbenefitisthatallchangesPLChasrecords,programdeguggingandmodifywon'tbecauseunrecordedlost.Thisisaregularsystemoftenhappensintheproblem.Thereisanadditionalfifthstage,maintenance,oncestartedwork,andhandovertheproductionhasproducedmaintenance.Allequipmentallhaveweaknesses,mostequipmentinthewr

7、ongmodespentmuchoftheirtime.PLCsystemprovidesaverypowerfultooltohelpdiagnosefailure.2唐山学院毕业设计PLC的控制优势任何控制系统从概念到进入工厂工作都要经历四个阶段。PLC系统在每一个阶段都有优势。第一个阶段是设计，对工厂的需要进行研究和制定控制策略，传统的运行平台的设计和制造必须在设计进行前完成。PLC系统仅仅需要的是一个模糊的关于机器的可能大小的想法和I/O数量的要求（多少输入和输出接口）。