循环流化床锅炉建模及其智能控制系统的研究

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1、浙江大学博士学位论文循环流化床锅炉建模及其智能控制系统的研究姓名：陈亮申请学位级别：博士专业：控制科学与工程指导教师：褚健;金建祥20050901浙江大学博士学位论文ABSTRACTTheCirculatingFluidizedBedBoiler(CFBB)，whichp01lutestheenVironment1ess，hasbeenwidely印pliedinpowera11dcogenerationindustryduetoitsadvaIltagessuchaShi曲combustionemciency'fuelad

2、aptation．However，t11eapplicationofCFBBis船舶mpemctbecauseitisamultiv撕atecouplingw汕distributionparameters，nonlinear，a11dtime—varycharacteristics．Thethe珊otcchIlicalcontmlisthemainfactorthatpreventstheCFBB疗omcommerciaiappIication．Therefore，tmsthesisiselaboratedfromtllef

3、0110wingfouraSpects．1．studyoncontmlmodeIofC阳Bbedtem瞳pentu代UptillnoW，aconcisesyStemmathematicalmodelhasnotbeensetupyetbecausemecirculatingnuidizedbedboilerisamultiV撕atecouplingfeaturedbydis埘butivepar锄eters，non-1inc甄andtime—v撕a廿on．CombustionmodelaIldsteampressuremode

4、lareestablishedafteranalyzingt11ekjne“chydIDdynanlicanddomjnalltfactorsaffcctingCFBBbedtemperature．ThestimulationaIldmefieldtesthaveshowedthattheaboVe—mentionedmodelsareabletorenectaccuratelyt11ebedtemperaturechaIlgeswhenfIlelfeedratedisturbanceoccurs，whichprovided

5、tlleoreticalbasisfortheCFBBoperanonandcontrollerdesign．2．studyoⅡCnml帽d∞ntmlObserved疔omtllelocalopemtion，theCFBBloadwillchaIlgeaccordingtotllebedtemperaturematcorrespondsto11flequalload．V撕a廿onofthefuelfbedaltersthebedtemperatureatfirst，andthentheboiler10ad．ConVerSel

6、y，thequantityoffuelfeedwillrenectthevariationatbedtemperature．Therefore，cascadecontrolisputfonval．dinthe山esis．Togetllerwiththe印plicationofpredictivefkzyalgorithIn，tllecascadecontroleliminatesthestealllpressurefluctuationcausedbyfuelfeeddistllrbaIlce，thusaddingstabi

7、l时of也ecom01systemaIldatthesametimereducingsystemovershot．Thecontrollerhasbeendesignedbasedonttlecomustionmodel．Thesimulationa11dindusnyapplicationshowthatsatisfacto拶resu】lshavebeenachieVed．3．stⅡdyonC耶Bsup_h嘲tedsteamtempe憎t．1他sup-heatedste锄temperatIlrcisacomplicated

8、pmcesscontrolsystemwhichreqllireshighprecisionandisalsotimc-delayin舀time—V盯iationaIldineniaaswell．Therefore，strongerrobusticitya11dself_adaptatio