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1、FAULTDIAGNOSISEXPERTSYSTEMUSINGNEURALNETWORKSFORROASTINGPROCESS1FAULTDIAGNOSISEXPERTSYSTEMUSINGNEURALNETWORKSFORROASTINGPROCESSYANAi-jun*,WUFeng-hua,CHAITian-youResearchCenterofAutomation,NortheasternUniversity,Shenyang,P.R.China,110004Abstract：Anintelligentfaultdiagnosissystemintegr

2、atingneuralnetworks,expertsystemandcase-basedreasoningtechnologyisestablishedfortheroastingprocessofshaftfurnaceinhematiteoresprocessingofChina.Thestructure,function,andrealizationmethodsoftheproposedsystemarepresented.Theproposedsystemhasbeensuccessfullyappliedtotheroastingprocessof

3、shaftfurnaceinthebiggesthematiteoresprocessingfactoryofChina.Theindustrialapplicationshowstheeffectivenessofproposedsystemforthefaultdiagnosisoftheroastingprocessofshaftfurnaceanditspotentialfutureinthecomplexindustrialprocess.Copyright©2005IFACKeywords:ShaftFurnace;FaultDiagnosis;Ne

4、uralNetworks;ExpertSystems;Case-BasedReasoning1.INTRODUCTIONTheironandsteelindustryinChinahasmadegreatprogressandhasbecomeoneofthelargestproducersintheworld.Mineralsprocessingisanimportantbasisoftheironandsteelindustry.DespitetheabundantmineralresourcesofironoresinChina,conventionalm

5、ineralsprocessingisdifficultduetolowertenorofminerals,whichusuallystandsatabout33percent.Inordertoimprovingtheconcentratingeffect,thewayofhightemperaturedeoxidizingmagnetizationroastingbyshaftfurnaceisused.Inthisway,weakmagnetismmineralmayturntostrongmagnetismmineralwhichcanbeconcent

6、ratedbymagneticdressing.Thereupon,roastingprocessofshaftfurnaceisimportanttotheproductionindicesofmetalrecoveryrateandtenoroffinishedores.Inotherwords,thekeyworkofenhancingthemetalrecoveryrateandtenoroffinishedoresduringmineralsprocessingismanipulatingtheroastingprocessofshaftfurnace

7、correctly.*Correspondingauthor.Fax:+86-24-23895647.E-mailaddress:ajy2004@126.comTheautomationoftheroastingprocessofshaftfurnaceshoulddealwithcomplexproblemsaboutmanyaspectsandmanylevelsofwhichtheabsolutelynecessarypartisfaultdiagnosis.Oncethefaultoccurs,productionwillbeimpactedterrib

8、ly,theworkst