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ID:32080344
大小:8.88 MB
页数:57页
时间:2019-01-31
《虚拟dcs标准化功能块库与数据接口的分析与开发》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、华北电力大学硕士学位论文AbstractWiththelargenumberofapplicationsoftheDCS.DCSsimulationhasbecomeincreasinglyimportant.ThefullrangesimulationofDCSisdeveloppingtowardsthefieldSO.called”Virtual”technique.WithanalysisofthecharacteristiesofdomesticandinternationalvirtualDCS,ourresearchgrouphasdesignedavirtualDCSsimul
2、ationsystembasedontheIEC6131.3standard.whichisdevelopedwithfivemodules:engineerstation,virtualDPU,standardfunctionblocklibrary,objectmodelsandHMI.ThisPaperaccomplishsthedevelopmentofthestandardfunctionblock1ibraryanddatainterface.Standardfunctionblock1ibrarywhichcontainsvariousfunctionsandfunctionbl
3、ocksisthealgorithmcarrierofvirtualDCS,andprovidesservicestothevirtualDCSthroughtheinterfaces.ThisPaperfirstintroducestheIEC6131.3standard.AccordingtothisstandardandthecharacteristiesofthevirtualDCS,thisPaperdesignsthedevelopmentprogramsofthestandardfunctionblocklibrarybasedonCOM.thatisprocesscompone
4、ntwiththedevelopmenttoolATL.Accordingtothestandard,thispaperdefinesthebasicdatatypesinthestandardusingVARIANTanddesignsauniformwayofpassingparameterstostandardizedexternalinterfaceofallfunctionsandfunctionblocks.Thestandardfunctionblocklibraryaccomplishsthestandardfunctions,functionblocksrespectivel
5、yindifferentobiectsandinterfaces.SomeofthefunctionblocksarepartiallymodifiedaccordingtothecharacteristicsofthevirtualDCS.AnumberofcontrolfunctionblocksareaddedtothefunctionblocklibrarytomeetthesimulationrequirementsofthevirtualDCS.AunifiedwayoffunctionsandfunctionblockscallingiSdesignedbasedonCOM.in
6、clusivemodel.ThelibraryprovidesservicestothevirtualDPUthroughtheinterfacesoftheschedulingobjectwhichincludesalltheCOMobjectsofthefunctionsandfunctionblocks.Theschedulingobjectinitializesandcallsthefunctionsandfunctionblocksaccordingtothefunctioncode.Thispaperalsowritessomerelatedprogramstotestandval
7、idatethefunctionblocklibrarytoensureitsaccuracyandvalidity.Finally,usingthecompleteddatainterfacethestandardfunctionblocklibraryaccomplishscommunicationwiththevirtualDPUandtheunificationofinformationw
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