资源描述：
《PLC控制系统 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、Atpresent,themaincontrolwayinautomationfieldarerlaycontrol,microcomputercontrolandPLCcontrol.Comparedwiththerelaycontrolsystemandthemicrocomputercontrolsysterm,thePLCcontrolsystermhasaseriesofadvantages,suchaslittleworkloadofdesigning,installing,wiringanddebugging,shortcycleofdevelopmentofwork
2、ingenvironmentandconvenientmaintenance.Meanwhile,therelaycontrolsystermhasalreadybeenfewusedonthemachinecontrolsystermisinferiorinabilityofanti-interference,highinrequirementofworkingenvironmentandlongindesigonganddevelopingcycleofthecontrolsysterm.Soitsapplicationhasbeingondeiningtrndintheaut
3、omationconrolfieldbyyear.Theelectricalcontrolsystemofz-3040Radialarmdrillhasmanydefectssuchascomplexcircuit,highfailurerate,largemaintenanceworkload,poorreliabilityandflexibility.Thispaperintroducesthez-3040RadialarmdrillrelaycontactanalogcontrolsystemreformationwithPLCtoguaranteetherapidity,a
4、ccuracyandrationalityofelectriccontrolsystem.Itsatisfiedrealproductiondemandandenhancetheeconomicbenefit.Theoriginalwasintroducedinitialcontrollerofprogrammabledistinguishingfeatureandperformance.Analysesonz-3040’sRadialarmdrilltechniquepropertyandtheworkcycledistancetravelledbyastreamofwaterb
5、ase,expoundedtheinitialcontrollerofapplicationES’ssetprogrammablecarryingonthetechnologicaltransformationsystemdesigntosuch,andfinishcomeoutthecontrolproceduretrapeziumpicture.WhatisaPLCcontrolsystem?Sincethe1960stheUnitedStatestolaunchprogrammablelogiccontroller(ProgrammableLogicController,PL
6、C)toreplaceconventionalcontroldevicessincetherelay,PLChasbeenrapiddevelopmentinvariouspartsoftheworldhavebeenwidelyused.Atthesametime,PLC'sfunctionalsoimproved.Withcomputertechnology,signalprocessingtechnology,controltechnologynetworktechnologydevelopmentanduserdemandforcontinuousimprovement,P
7、LCindealingwiththevolumeswitchonthebasisoftheincreaseintheamountofanalogprocessingandmotioncontrolfunctions.Today,thePLCisnolongerconfinedtothelogiccontrol,motioncontrol,processcontrolandotherfieldshasalsoplayedaveryimportantrole.Discre
