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1、西安建筑科技大学硕士学位论文DMCAlgorithmandGPCDecouplingDesign’sApplicationinThreeBenzeneDistillationUnitsoftheContinuousReformingDeviceMajor:ControlTheoryandControlEngineeringGraduatestudent:DaChengliSupervisor:ProfessorJiQichunAbstractThisissueisbasedoncatalyticreformingdevicetechnologyproject
2、fromapetrochemicalenterprise.Alongwithourcountry’spetro-chemicalabilityincreasingceaselessly,oilresourceshasbecomethemainfactorinrestrictingthedevelopmentofprocessingindustry.Sohowtoobtainbetterqualityproductsandgreaterbenefitfromthelimitedresourcesistobecomeareasoffocusinpetrochem
3、icalindustry,andtousereasonableprocesscontroltechnologyandadvancedequipmenttomonitorcatalyticreformingprocessinrefineryisaneffectivemeans.Thispaperintroducesthetechnologicalprocessofcatalyticreformingunit,givingadetailedanalysisforunitrelationamongvariablesofthreebenzenedistillatio
4、n,puttingforwardtheimprovementschemefortechnologyproblemsofexistingunit,andtestthemodifiedandcontroleffectfortheunitwiththehelpofmodelpredictivecontrolalgorithm.Becausethreebenzenedistillationunitsisanonminimumphasesystemcharacteristicofinterferingwithcomplex,frequentdisturbance,an
5、ddifficulttocontrolandbuilddirectprocessmodel.Thispaperusepetrochemicalprocesscontrolalgorithm--DMCpredictivecontrolalgorithm,thealgorithmtakestheobjectunitstepresponseasprocessmodel,usetheforecast,rollingoptimizationandfeedbackcorrectiontoimplementoptimizationcontrolforcontrolobje
6、ct,solvesthecontradictionbetweenthefeedbackandoptimization,andrealizetheunionofopen-loopcontrolandclosed-loopcontrol,enhancestherobustnessofthesystem,andcanachievethereal-timesolutiontomatrixmodel.ThedatameasuredintheactualprocessissimulatedintheDMCplusenvironment,verifyingthevalid
7、ityofthealgorithm.西安建筑科技大学硕士学位论文Sincethreebenzenedistillationunitsisamultipleinputmultipleoutput,andvariablestrongcouplingrelationoftheunitsystem.ThepapergivesGPCdesignforunitbasedonCARIMA.Inordertosimplecalculation,preventdecentralizedcontrol,cumbersomeanddefectsofdecouplingcontro
8、l,thepaperusesuniquedecoup
