会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--锅炉燃烧系统的模糊控制.DOC

  • 资源星级:
  • 资源大小:34.00KB   全文页数:5页
  • 资源格式: DOC        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
友情提示
2:本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3:本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

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,especiallytheautomaticcontrolsystemcoalpowderboilers,andhavenotbeenproperlyaddressed.ThereasonisCoalpowderboilersfactorstobechargedmore,stronginternallink,externaldisturbancesarefrequentandhasdistinctcharacteristicsandnonlinearcharacteristicspurelylagforautomaticcontrolsystemforhighsecurity.Thusthesystemisacategorydifficulttocontrol.Althoughmanysmallpowerplantboilersdesignedconventionalinstrumentationsystem,butdidnotachievethedesiredpurpose,andmoststillusemanualcontrol.Thisisbecauseconventionalinstrumentscanonlyachieveasaltsinkscontrol,notcontrolledprocesschanges,nottheentireboilersystemcoordinationandcontrol.Developmentofthemid1970s.Toobscurecontroltheory,Coalpowderboilercombustioncontrolsystemhasgoodperformanceandachievegiantburningboilersambiguouscontrolsystem.Boilersoperatingsystemisanimportantwaytoachieveautomation.Modelsteamboilersteamdrumboilercombustionsystemsburningpressureisthemaintargetwasthetransferofcontrol,causingsteampressurechangesanumberoffactors,suchasfuelvolume,entervolume,towater,steamflowandthevariouschangesinthenatureburn.Itisthemaindisturbancefuelvolumechangeknownasthethree,andsteamflowchangesknownasthethree.Changesinthevolumeoffuel,ignoringsomeminorfactors,thepressuresteamboilerssimilartothedynamicsofthetarget.BonusPointforinertiallinkswiththechainlink.Fromtheactualprocessgaspressureforthetransmissionofacertainlag,thetimelaginnet.Wecanburnbetweenabout1s2smathematicalmodelsforthesystemGSPS/MSKe/TSTZS11TypeofP,Tpressuresteam,andonetimeconstantsadelayofonetopowderonetime,Kratiofactor.Thismathematicalmodel,itisonlyasimilartimeconstantsdifficulttoidentifytheprecisemeasurements,changesinoperatingconditionsandthepresenceofsystemequipmenterrorandotherfactorswillcausetheparameters,constantchanges,such2changesresultingmathematicalmodelandtheactualsystem.Oftendonotmatchtoensurebettercontroloverperformance,theuseofvaguecontrolisofgreatsignificance.Controlscheme,boilercombustionsystemisacomplexofthreeexporttargets,asseeninfigure1,butexistsbetweenthevolumeofFigure1targetsexpressedbytheactualindepthstudy,Itfoundthatthemainchamberpressurefromthewindandenterthefilm,andthevolumeofitsothereffectsaresmallitcanbefuelvolume,SteamchamberpressureasthepressurebroughtfansoftheformerfedsinglecircuitcontrolUnification..Inaddition,theplanistoensureaccesstothetraditionaleconomicpracticescombustionboilersthatfallthroughasynthesizingCalibrationofgasblastwindofsynthesizing.DepartmentcitedvariousconstraintssmethodsasaresultoftheeffectisnotidealC27,firstasameansofeconomiccontrolofthemaintempleburnedZr0mutilatedsynthesizingcheckingdeviceisexpensive,lifeshortSecondly,thelongerthetimelagsynthesizingsignalswhentheloadchanges,thevolumeofcoalmutations,synthesizingnottimelyresponse,maintainedtheoriginalairblowvolumewillinevitablycausegiantroastinadequate.Therefore,wedonotadoptsuchanapproach,buttousethermalefficiencythancoalandwindbetweenpeaksidentitytochambertemperatureaccusedofusingcourtingsuperiorcontrol,automaticsearchofthebestwindthancoal.SothatthefuelcandesignfortwoinchesasmutuallyindependentandaffiliatedcontrolsystemsthatheatloadcontrolsystemstomaintainsteampressureroasteconomiccontrolsystemPOWiththebestwind/coalthan.Thediagramshowedinfigure1.Usedtocontrolsteampressureonthechambertemperaturecontrolparametersfordeputytovapourpressureforcontrolparametersstringlevelcontrol.Intermsoftiming,becausechambertemperaturemuchmorethanvapourpressureadvance,andinertiatimeconstantsaresmaller.Advance.Tothevolumeofcoaltoovercomesystemtransitiontime,thevolumeofsuperlarge,theslowrecoveryoftheparameters,suchaspoorqualitycontrolshortcomings,butalsoforpeopledeputycircuitintodisturbancessuchasgreenhouses,citedwind,chamberpressure,thevolumeofcoal,coal,etc.hasafairlystrongantiinterferencecapability.PlansforChinahadtopowdermachinerotationalspeed,fansofTheIr.Proportionaltotherotationalspeedwithpowdermachinetoachieveratecontrol,asfansoftenroughandwilladjusttotheoptimalworkingpointfortheworkpointsnear.Whenchangestothevolumeofcoal,fanscorrespondinglychanged,chambertemperaturechangesatthistimesinceanexcellentstart3ambiguoussignalcontrollers,automaticsearchofthebestwindthancoal.Controlalgorithmsvaguecontrolalgorithms,ambiguoussignalcontrollersKansaidonereasonsingletwopart,theacquisitionofcontrolispartoftheSeparationLinealgorithmstable,partlybythecontroltableonlinealgorithm.SeparationLinealgorithmisbasedontheexperienceofoperators,basedonfuzymathsyntheticreasoningprocess,withtheultimateaimofproducingabluredcontrollerfortheonlineapplicationcontrolenquiriestablethatis,vaguecontroltable.Onlinealgorithmisactuallytableexportcontrolprocess.Thelessonslearnedfromartificialvaguecontroltableisverycrude,causingcrudeeasons,isvagueindefiningsubset.Fullyrelyonthesubjectiveandwillnotnecessarilyrealistic.Theneedtocontrolonlinevaguecontroltableonlineamended.Wethereforeadoptedavaguesignalcontrollertoimprove.Comparedwiththebasicambiguitycontroller,whichaddedavaguecontrollerparameterswillbeonlinefromtheagency.Theagencyrevisedalgorithmisbasedonfakeintelligencepeoplecontrolledthinking,analysisandidentificationsystemexportstatus,dynamicallyindependentlyconductedonlineamendedtoadjustthecontroloftheentireprocesssimulationtestsaccordingtocontrolascheme,andtheuseof1amathematicalmodelparameterselectedT1120s,T260s,t20slagtime,samplingcyclecircuitasis,outsidecircuitfor2soP3anumberofgaspressurecircuitemulation,FigurespiritvapourpressurevaguestringclasscontrolsystemdiagramFigure5givesthestringclassvaguecontrolsimulationcurve,andinBandstouringinterference.Theresultscanbeseenbythesimulationoperation,thestringclassvaguecontrolhasstrongantinterferencecapability,theuseofimprovedAmbiguoussignalcontrollersforboilercombustioncontrolsystemhasaverygoodperformance.So,thewindcoalthancourtingdistinctionsblurredcontrolalgorithmsinthetrialoperationofaboilerplantcoalpowder,iftestingelementstemperatureHeat,Puppetkitsinstalledsuitablelocation,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,对煤粉锅炉燃烧系统有着良好的控制性能,实现锅炉燃烧系统的模糊控制是锅炉操作实现自动化的重要途径。锅炉燃烧系统模型锅炉汽包蒸汽压力是燃烧控制对象的主要被调量,引起蒸汽压力变化的因素很多,如燃料量、送风量、给水量、蒸汽流量以及各种使然烧情况变化的原因。它的主要扰动是燃料量的改变称为内扰,和蒸汽流量的变化称为外扰。在燃料量改变时,忽略一些次要因素的影响,锅炉的蒸汽压力对象的动态特性可近似为惯性环节与积分环节的串联。因实际过程中,汽压对象具有一定的传递滞后,纯滞后时间约为1s2s我们可得到燃烧系统的数学模型为GSPS/MSKe/TSTZS11式中P蒸汽压力T,Tz时间常数X11给粉量t延迟时间K比例系数。对于这个数学模型,它只是一种近似,时间常数的测辨率难于精确,运行条件的变化以及系统设备存在误差等因素都会引起各参数、常数的变化,这种变化造成数学模型与实际系统往往不相匹配,难于保证较优的控制性能,所以采用模糊控制具有重要的意义。控制方案,锅炉燃烧系统是一个复杂的三输入三输出对象,而且各量之间存在着一定的关系,把实际对象进行深入研究后,不难发现炉膛负压主要受引风和送风的影,而其它各量对它的影响都很小,因此可以燃料量、蒸汽压力把炉膛负压作为带送风前馈的单回路控制系统处理。另外,图中的通道是保证锅炉燃烧经济性的传统做法,即通过送风氧量来维持最佳风煤比,实践证明这种方法由于受多种条件限制效果不够理想,首先作为经济性燃烧主要控制手段的Zr0残氧量检测仪价格昂贵,使用寿命短其次,氧量信号的滞后时间较长,当负荷突变时,煤量突变,氧量反应不及时,仍保持原来的鼓风量,势必造成燃烧不充分。因此,我们不采用这种方法,而是利用热效率与风煤比之间的峰值特性,以炉膛温度为

注意事项

本文(外文翻译--锅炉燃烧系统的模糊控制.DOC)为本站会员(淘宝运营)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网([email protected]),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5