外文翻译--锅炉燃烧系统的模糊控制.DOC

1FaintnesscontrollerofburningboilerThetextwhichstudyseriescoalpowderburningboilerscontrolascheme,presentedheatloadsystemlevelmodulescontrol,andenterthecircuitvaguecourtingsuperiorcontrol,simulationresultsconfirmthefeasibilityofthescheme.Currently,manylargedomesticplantshaveadoptedcomputerfirecontrol,andtheeffectisverygood.However,becauseofourelectricenergyisverytense,thereweremanysmallplantsinthepotguardingtheplant,especiallyt-heautomaticcontrolsystemcoalpowderboilers,andhavenotbeenproperlyaddressed.ThereasonisCoalpowderboilersfactorstobechargedmore,stronginternallink,externaldisturbancesarefrequentandhasdistinctcharacteristicsandnonlinearcharacteristicspurelylagforautomaticcontrolsystemforhighsecurity.Thusthesystemisacategorydifficulttocontrol.Althoughmanysmallpowerplantboilersdesignedconventionalinstrumentationsystem,butdidnotachievethedesiredpurpose,andmoststillusemanualcontrol.Thisisbecauseconventionalinstrumentscanonlyachieveasaltsinkscontrol,notcontrolledprocesschanges,nottheentireboilersystemcoordinationandcontrol.Developmentofthemid-1970s.Toobscurecontroltheory,Coalpowderboilercombustioncontrolsystemhasgoodperformanceandachievegiantburningboilersambiguouscontrolsystem.Boilersoperatingsystemisanimportantwaytoachieveautomation.Modelsteamboilersteamdrumboilercombustionsyst-emsburningpressureisthemaintargetwasthetransferofcontrol,causingsteampressurechangesanumberoffactors,suchasfuelvolume,entervolume,towater,steamflowandthevariouschangesinthenatureburn.Itisthem-aindisturbancefuelvolumechange(knownasthethree),andsteamflowchanges(knownasthethree).Changesinthevolumeoffuel,ignoringsomeminorfactors,thepressuresteamboilerssimilartothedynamicsofthetarget.BonusPointforinertiallinkswiththechainlink.Fromtheactualprocessgaspr-essureforthetransmissionofacertainlag,thetimelaginnet.Wecanburnbetweenabout1s2s；mathematicalmodelsforthesystemG(S)=P(S)/M(S)=Ke/(TS(TZS+1)(1)TypeofP,Tpressuresteam,andonetimeconstants；adelayofonetopowderonetime,Kratiofactor.Thismathematicalmodel,itisonlyasimilartimeconstantsdifficulttoidentifytheprecisemeasurements,changesinoperatingconditionsandthepresenceofsystemequipmenterrorandotherfactorswillcausetheparameters,constantchanges,such2changesresultingmathematicalmodelandtheactualsyste-m.Oftendonotmatchtoensurebettercontroloverperformance,theuseofvaguecontrolisofgreatsignificance.Controlscheme,boilercombustionsystemisacomplexofthreeexporttargets,asseeninfigure1,butexistsbetweenthevolumeofFigure1targetsex-pressedbytheactualindepthstudy，Itfoundthat:themainchamberpressur-efromthewindandenterthefilm,andthevolumeofitsothereffectsaresmallitcanbefuelvolume,SteamchamberpressureasthepressurebroughtfansoftheformerfedsinglecircuitcontrolUnification.Inaddition,theplanistoensureaccesstothetraditionaleconomicpracticescombustionboilersthatfallthroughasynthesizingCalibrationofgasblastwindofsynthesizing.DepartmentcitedvariousconstraintssmethodsasaresultoftheeffectisnotidealC27,firstasameansofeconomiccontrolofthemaintempleburnedZr0mutilatedsynthesizingcheckingdeviceisexpensive,lifeshort；Secondly,thelongerthetimelagsynthesizingsignalswhentheloadchanges,thevolumeofcoalmutations,synthesizingnottimelyresponse,maintainedtheoriginalairblowvolumewillinevitablycausegiantroastinadequate.Therefore,wedonotadoptsuchanapproach,buttousethermalefficiencythancoalandwindbetweenpeaksidentitytochambertemperatureaccusedofusingcourtingsuperiorcontrol,automaticsearchofthebestwindthancoal.Sothatthefuelcandesignfortwoinchesasmutuallyindependentandaffiliatedcontrolsystemsthatheatloadcontrolsystems(tomaintainsteampressure)roasteconomiccontrolsyste-m(POWiththebestwind/coalthan).Thediagramshowedinfigure1.Usedtocontrolsteampressureonthechambertemperaturecontrolparametersfordeputytovapourpressureforcontrolparametersstringlevelcontrol.Intermsoftiming,becausechambertemperaturemuchmorethanvapourpressureadvance,andinertiatimeconstantsaresmaller.Advance.Tothevolumeofcoaltoovercomesystemtransitiontime,thevolumeofsuperlarge,theslowrecoveryoftheparameters,suchaspoorqualitycontrolshortcomings,butalsoforpeopledeputycircuitintodisturbances(suchasgreenhouses,citedwind,chamberpressure,thevolumeofcoal,coal,etc.)hasafairlystronganti-interferencecapability.PlansforChinahadtopowdermachinerotationalspeed,fansofTheIr.Proportionaltotherotationalspeedwithpowdermachinetoachieveratecontrol,asfansoftenrough-andwilladjusttotheoptimalworkingpointfortheworkpointsnear.Whenchangestothevolumeofcoal,fanscorrespondinglychanged,chambertemperaturechangesatthistimesinceanexcellentstart3am-biguoussignalcontrollers,automaticsearchofthebestwindthancoal.Controlalgorithmsvaguecontrolalgorithms,ambiguoussignalcontrollersKansaidonereasonsingletwo-part,theacquisitionofcontrolispartoftheSeparationLinealgorithmstable,partlybythecontroltableonlinealgorithm.SeparationLinealgorithmisbasedontheexperienceofoperators,basedonfuzymathsyntheticreasoningprocess,withtheultimateaimofproducingabluredcontrollerfortheon-lineapplicationcontrolenquiriestable(thatis,vaguecontroltable).Onlinealgorithmisactuallytableexportcontrolprocess.Thelessonslearnedfromartificialvaguecontroltableisverycrude,causingcrude-easons,isvagueindefiningsubset.Fullyrelyonthesubjectiveandwillnotnecessarilyrealistic.Theneedtocontrolonlinevaguecontroltableonlineame-nded.Wethereforeadoptedavaguesignalcontrollertoimprove.Comparedwiththebasicambiguitycontroller,whichaddedavaguecontrollerparameterswillbeonlinefromtheagency.Theagencyrevisedalgorithmisbasedonfakeintelligencepeoplecontrolledthinking,analysisandidentificationsystemexportstatus,dynamicallyindependentlyconductedonlineamendedtoadjustthecont-roloftheentireprocesssimulationtestsaccordingtocontrolascheme,andtheuseof(1)amathematicalmodelparameterselectedT1=120s,T2=60s,t=20slagtime,samplingcyclecircuitasis,outsidecircuitfor2soP=3anumberofgaspressurecircuitemulation,FigurespiritvapourpressurevaguestringclasscontrolsystemdiagramFigure5givesthestringclassvaguecontrolsimulationcurve,andinBandstouringinterference.Theresultscanbeseenbythesimulationoperation,thestringclassvaguecontrolhasstrongantinterference-capability,theuseofimprovedAmbiguoussignalcontrollersforboilercombustioncontrolsystemhasaverygoodperformance.So,thewindcoalthancourtingdistinctionsblurredcontrolalgorithmsinthetrialoperationofaboilerplantcoalpowder,iftestingelements(temperatureHeat,Puppetkits)installedsuitablelocation,theoperatingresultswereverygood.Asthisisanexcellentcontroloftheexportofafifteenvolumeamendment,thus,isparticularlyapplicabletocoalvolatileoccasions.4锅炉燃烧系统的模糊控制本文研究了煤粉锅炉燃烧系统的控制方案，提出了热负荷系统的串级模糊控制，及送风回路的模糊自寻优控制，仿真结果证实了该方案的可行性。目前，国内的许多大型火电厂已采用了微机控制，收效甚好。但是，由于我国的电力能源十分紧张，还存在许多小型的火力发电厂，对于这些电厂的锅护，特别是煤粉锅炉系统的自动控制问题，并没有得到很好的解决。究其原因是煤粉锅炉的待控因素比较多，内部关联强，外部扰动十分频繁，且具有明显的纯滞后特性和非线性特性，对自动控制系统的安全性要求较高等。因此是一类难以控制的系统。许多小型电厂的锅炉虽然设计了常规仪表系统，但都没有达到预期的目的，大多数仍然采用手工控制。这是因为常规仪表只能实现带冲量的控制，不能适应受控过程的变化，不能实现整个锅炉系统的协调控制。70年代中期发展起来的模糊控制理论，