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1、AiroperatedmovesthecarriervehicleandthePLCcontrolAiroperatednamelyusestheairpumpandtheairvalvecontrolaircurrent,thepositivegoverningbarometricpressureandthecurrentcapacity,enabletheairtohavethevibration.Theprogrammablecontroller(PLC)istakenthemicroprocessorasthecore,colle
2、ctioncomputertechnology,theautomatedcontroltechnologyinabodyonenewindustrycontrolsystem.PLChasusedthemodelcomputerstructure,mainlyincludesCPU,RAM,ROMandtheinput/Outputconnectionelectriccircuitandsoon.IfregardsasPLCasystem,thissystemiscomposedbytheinputvariable-PLC-outputv
3、ariable,theexterioreachkindofswitchingsignal,thesimulatedsignal,thesensorexaminethesignaltookPLCtheinputvariable,theyinputafterthePLCexteriorposttotheinternalregisterin,afterthePLCinteriorlogicoperationorothereachkindofoperation,processingdeliverstheoutputterminal,theyare
4、thePLCoutputvariable,carriesoneachkindofcontrolbytheseoutputvariablestotheauxiliaryequipment.ThePLCcontrolsystemadoptsgenerallyeasytounderstandandtograsptrapezoidalchartlanguageandfaceindustrycontrolsimpleinstruction.Theimageisdirect-viewing,isbasedonthefieldbustechnology
5、,openscompletely,andusestheadvancedsoftwareandhardwaretechnology.ThePLCcontrolhasthestructuresimplynimble,theanti-jammingabilitystrong,safereliable,installstheconvenience,thefailureratelowly,themaintenanceissimple,largescalesavestheusecostthecharacteristic,cansatisfyeachk
6、indofcentersmallscaleprocesscontrol,thesmoothlogiccontrolandthedataacquisitiondutydemand,widelyhasusedingraduallyintheindustrycontrolsystem,includingdomainandsoonmetallurgy,miningindustry,machinery,lightindustry,hasprovidedthepowerfultoolfortheindustrialautomation.Thecont
7、rolengineeringinthenearfuturetowilluseinthelogicalequipmentwhichprogrammedtheprocessandthemachinerycontrolscarryingonaninvestigation,althoughthecomputerandcomputertechnologyalreadyprovidedtheinfinitecontrolforeachkindofcontroltobepossible,butPLCstillwasaimportantpart.Inth
8、isinvestigation,itwillsurpasshalfnumberofpeopletoexpanditsPLCinthefuture12monthstheinvestment.It
