资源描述:
《外文翻译---三坐标测量机测头的误差校准》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、附录2StudyandDesignnoAutomationControlSystemoftheThermalPowerUnitfromtheSystemPointofview.TianJianyanliusifengPanlizhen(1.NanjingUniversityofAeronauticsandAstronautics,Nanjing210016China)(2.TaiyuanUniversityofTechnology,Taiyuan030024China)Abstract:Fromthesystempointofvie
2、w,thefeatureofthethermalpowerunitandthedemandonitscontrolsystemareanalyzedandresearchindetailsinthispaper.Thecharacterthattheboilsandthesteamturbineareawholeofrelativeindependenceisfullyconsidered.Bycoordinatecontrol,thepurposeoftheoptimalwholeoperatingeffectofthesyste
3、misrealizeadoptingthekeytechniquesofcommunication,computerandintelligentinformationprocessetc....Theadaptationandwholepropertyofthesystemisemergedbyinteractionandcoordinationbetweensubsystems.1IntroductionThesystemisanorganicwholecertainstructureandfunction,whichconsis
4、tsofseveralelementwithinterrelation,interdependenceandinterplay.Thethermalpowerunitisatypicalsystem,composedofgenerator,steamturbine,boilerandmanyanxiliaryequipment.Itsmainfunctionistoproducethepowerloadaccordingtopowernetworkrequirement.Systemengineeringisthescienceus
5、edtostudyanddesignthecomplexsystem.Inthemeantime,Itisalsothetheoryandmethodusedtodealwithsystemsintermofdefiniteaiminordertoachievetheoptimalwholeofthesystem.Fromthesystempointofview,thecoordinatecontrolsystemofthethermalpowerunithasbeenstudiedanddesignedinthispaper.2S
6、tudyandDesignonAutomationControlSystemoftheThermalPowerunitfromtheSystemPointofView2.1FunctionofAutomationControlSystemofthePowerunitAtfirstthethermalpowerunitasthecontrolledobjectisdeeplystudiedbeforeitsautomationcontrolsystemisstudiedanddesigned.Thethermalpowerunitis
7、ahugegroupofequipments,whichiscomposedofgenerator,,steamturbine,boilerandmanyauxiliaryequipments.Itsprocessflowiscomplexandpipelinesintervenient.Especiallythelarge-scalepowerunitisatypicalcoupling,nonlinear,varyingcomplexcontrolledobjectwithmulti-inputandmulti-output.T
8、housandsofparametersaremeasured,operatedandcontrolled.Thecharacterofobjectischangefulbecauseofmanydifferentoperatingm