簡介：隨著我國航空工業(yè)的迅猛發(fā)展，復合材料的應用日益增加，航空大型復材構件作為大型飛機的主要承載部件，其生產(chǎn)以及裝配質量直接決定飛機的服役性能。為實現(xiàn)復材構件低損傷、高精度、高可靠性的生產(chǎn)以及連接裝配，需要對大型復材構件的尺寸進行高精度測量，因此研究針對航空構件生產(chǎn)現(xiàn)場的快速高精度測量方法具有重要意義。雙目立體視覺是一種非接觸式高精度、高效率、高柔性的便捷測量方法，課題組提出了基于激光掃描與跟蹤儀拼接的大型構件視覺測量方法，以實現(xiàn)對航空大型復材零部件的參數(shù)測量。在雙目立體視覺測量系統(tǒng)中，相機標定作為首要環(huán)節(jié)，其全局標定精度直接影響到最終的測量精度。本文從大型航空構件測量現(xiàn)場視場大、畸變嚴重、環(huán)境復雜的難點入手，對大視場相機標定技術開展了研究工作，主要研究內(nèi)容包括1對國內(nèi)外現(xiàn)有相機標定方法進行整理分析，針對相機大視場現(xiàn)場標定問題，提出了基于分區(qū)域參數(shù)分離求解的大視場雙目相機標定方法，該方法利用參數(shù)分離標定的思想，對測量空間進行分區(qū)在靠近主點畸變較小的區(qū)域通過空間布點求解相機參數(shù)初值，在視場四角畸變較大位置設置共線約束求解畸變系數(shù)初值，以重投影誤差最小為目標進行參數(shù)整體優(yōu)化，通過單張照片快速實現(xiàn)大視場相機的全場標定。2在標定方法的基礎上，分析了標定控制點結構分布對標定測量精度的影響因素，利用激光跟蹤儀以及視覺測量系統(tǒng)搭建了標定控制場，采用實驗歸納的方式定性分析了標定控制點景深分布、數(shù)量以及像面分布對標定測量精度的影響規(guī)律，從而指導標定布局，提升標定精度。3設計了一套適用于航空現(xiàn)場測量的便攜式空間立體標定裝置，以碳化硅標準陶瓷球作為標定的特征元素，并且根據(jù)標準球的圖像灰度分布結合等差梯度結構提出了自動快速匹配特征識別方法，便于配合標定方法實現(xiàn)全場的快速標定。4在上述研究基礎上，結合標定裝置分別在實驗室和航空構件測量現(xiàn)場進行了標定精度驗證實驗。結果表明測量視場為20M15M，實驗室環(huán)境下標尺重建偏差均值為01147MM，現(xiàn)場環(huán)境下單點測量坐標平均偏差為013MM，尤其在景深方向的測量平均偏差僅為01156MM，滿足航空現(xiàn)場測量的精度要求。

簡介：西安電子科技大學學位論文獨創(chuàng)性或創(chuàng)新性聲明秉承學校嚴謹?shù)膶W風和優(yōu)良的科學道德，本人聲明所呈交的論文是我個人在導師指導下進行的研究工作及取得的研究成果。盡我所知，除了文中特別加以標注和致謝中所羅列的內(nèi)容以外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果；也不包含為獲得西安電子科技大學或其它教育機構的學位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻均已在論文中做了明確的說明并表示了謝意。申請學位論文與資料若有不實之處，本人承擔一切的法律責任。本人簽名蘭逝日期迦蘭2』西安電子科技大學關于論文使用授權的說明本人完全了解西安電子科技大學有關保留和使用學位論文的規(guī)定，即研究生在校攻讀學位期間論文工作的知識產(chǎn)權單位屬西安電子科技大學。學校有權保留送交論文的復印件，允許查閱和借閱論文；學校可以公布論文的全部或部分內(nèi)容，可以允許采用影印、縮印或其它復制手段保存論文。同時本人保證，畢業(yè)后結合學位論文研究課題再撰寫的文章一律署名單位為西安電子科技大學。本人簽名至逝導師簽名牲日期趁絲2』技術；在ANSYSWORKBENCH中快速的模擬了國軍標規(guī)定的隨機振動環(huán)境和沖擊振動環(huán)境；對縮減機箱模型進行了模態(tài)分析、隨機振動分析、沖擊響應分析，獲得了結構的固有特性及振動響應特性。經(jīng)過論證，發(fā)現(xiàn)分析結果與實際情況大致相符，從而表明本文的工作是有效的。關鍵詞有限元分析ANSYSWORKBENCH有限元建模模態(tài)分析隨機振動分析沖擊振動分析

簡介：基于離散頻譜的L波段數(shù)字航空通信系統(tǒng)資源分配研究重慶大學博士學位論文學生姓名黃杰指導教師曾孝平教授專業(yè)通信與信息系統(tǒng)學科門類工學重慶大學通信工程學院二O一七年四月STUDYONRESOURCEALLOCATIONINNONCONTINUOUSSPECTRUMFLBDIGITALAERONAUTICALCOMMUNICATIONSYSTEMATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEDOCT’SDEGREEOFENGINEERINGBYHUANGJIESUPERVISEDBYPROFZENGXIAOPINGSPECIALTYCOMMUNICATIONINFMATIONSYSTEMCOLLEGEOFCOMMUNICATIONENGINEERINGOFCHONGQINGUNIVERSITYCHONGQINGCHINAAPRIL2017

簡介：南京航空航天大學碩士學位論文航空公司飛機恢復系統(tǒng)問題初步研究姓名柏強申請學位級別碩士專業(yè)交通運輸規(guī)劃與管理指導教師胡明華20060101航空公司飛機恢復問題初步研究IIABSTRACTAIRLINESARECONSTANTLYFACEDWITHDISRUPTIONPROBLEMSANDCANNOTEXECUTETHEIRSCHEDULESASPLANNEDBECAUSEOFSEVEREWEATHERPATTERNS,UNEXPECTEDAIRCRAFTMECHANICALFAILURES,CONGESTIONATAIRPORTETCWHENADISRUPTIONOCCURS,THEAIRLINEHAVETORESCHEDULEFLIGHTLEGS,NEEDAPOLICYTODECIDEWHICHFLIGHTLEGSNEEDTOBEDELAYEDANDWHICHONESNEEDTOBECANCELLED,ANDREROUTETHEAIRCRAFTS,CREWS,ANDPASSENGERSTHISPAPERSUMMARIZEDTHESOLUTIONSCURRENTLYADOPTEDBYAIRLINESUNDERTHECIRCUMSTANCESOFINTERRUPTIONSAFTERFULLYMASTERINGTHECOREBUSINESSOFTHEMOSTIMPORTANTDEPARTMENTOFAIRLINESAOCAFTERWARDS,SEVERALEXISTINGMODELSOFAIRLINESRECOVERYWEREREVIEWEDANDTHEAIRLINESINTEGRATEDRECOVERYMODELWASINTRODUCEDINDETAILSTHEAIRCRAFTRECOVERYMODELWITHTHEINTENTIONOFMINIMIZINGAIRLINESOPERATINGCOSTWASRESEARCHEDINDEPTH,INCLUDINGESTABLISHMENTOFTHEMODELANDTHECORRESPONDINGALGORITHMTHESOLUTIONTOTHEAIRCRAFTRECOVERYPROBLEMWASPROPOSEDANDAHEURISTICALGORITHMWASPUTFORWARDTOENGAGECERTAINAIRCRAFTSINTHEREROUTINGCALCULATIONACCORDINGTOTHEDIFFERENTKINDSOFINTERRUPTIONSFINALLY,BASEDONTHEABOVEAIRCRAFTRECOVERYSOLUTION,ADECISIONSUPPORTTOOLOFAIRCRAFTRECOVERYWASDEVELOPEDBYUTILIZINGOFCOMPUTERDEVELOPINGTOOLS,WHICHONTHEOTHERHANDVERIFIEDTHEAIRCRAFTRECOVERYMODELKEYWORDSAIRLINEIRREGULAROPERATION,AIRLINERECOVERYPROBLEM,AIRCRAFTRECOVERY,OPTIMIZATIONMODEL

簡介：中圖分類號V214論文編號102870113S049學科分類號080104碩士學位論文航空結構關鍵部位損傷識別方法研究研究生姓名金培學科、專業(yè)工程力學研究方向結構健康監(jiān)測指導教師周麗教授南京航空航天大學研究生院航空宇航學院二○一三年三月NANJINGUNIVERSITYOFAERONAUTICSANDASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFAEROSPACEENGINEERINGRESEARCHONDAMAGEDETECTIONMETHODSFORAEROSPACESTRUCTURALHOTSPOTSATHESISINENGINEERINGMECHANICSBYJINPEIADVISEDBYPROFZHOULISUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFENGINEERINGDECEMBER,2012

簡介：分類弓V23題目學佼代碼10699研究生學號046076382西北工業(yè)大學碩士學位論文學位研究生作者趔D態(tài)學科專業(yè)控劍堡途皇控劍工猩指導教師楚工2007年3月西北工業(yè)大學碩士學位論文英文摘要ABSTRACTTHEHI咖DUTY觚LCOOLEDOILTESTBEDISANIMPONARLTEQUIPMENTFORTLI舟D啊MELCOOLEDOILCOOLERTOBEIILSPECTEDANDRESEARCHEDINORDERTOI11SDECTCOOLERMORCQUICKLYAILDSAFCLY，ANDALSOIMPROVCCOQORATION’SECONOMICBENE矗TS，N，SNECESSAN，TODESIGNMELLI曲DUTY如E1COOLEDOILTESTBEDTILATCON打01WITHTHCCOM口UTERFIRSTLY’THISPAPERIN仃ODUCESMEDEVELOPMENTOFCOMPUTERCON仃OLTHEORY徹DT11ETESTINGPROCESSOFLLIGHDMY如ELCOOLEDOILCOOLERACCORDINGTOTHEREQUESTFORTESTING，MESCHEMEOFTESTBEDISPRESENTSECONDLY，BASEDONTHE鋤LYSISOFSYSTEM’SJ1ARD啪RE，NLEP印ER丘NISHEDT王LEDESIGLLOFTHISSYSTEM’SHARD呲AILDAISOSEIEC倒APP跏CUSTHJRDLY，HOWTODES咖111IS螂BED’SSORWAREARCINTRODUCEDFINALLY，APIDCONTROLLERFORTEMPERATUREISDESIGNED觚DSIMUIATEDASTILDYONYSTEMCOMMISSIONINGISPRESEMEDATJASTIN協(xié)EANICLETHEPRACTICALSHOWSTHATTHESYSTCMDESIGNISFCASIBLEAILDREACHESTTLEREQUIREMENTSPRESET【KEYWORD】HIGHDUTY舭LCOOLEDOILC00IERVISUALB∞ICTESLBEDCOMPUTERC0NTROLDALAB船EN

簡介：西北工業(yè)大學碩士學位論文光纖通道在航空計算領域的研究和應用姓名宋少峰申請學位級別碩士專業(yè)計算機科學與技術指導教師張延園20070301ABSTRACTW汕T11EDEVELOPMENTOFAVIOTRONICS，WENEEDHI曲ERDATA一柵1SMITSPEEDINAYIONICSCOMPUTEFIELDATT11ES鋤ETIME，AGRCATDEALDATASHOLLLDBETRANSMINEDAMONGONBOARDELECTRONICSEQUIPMENTINCOMPLEXNETWORKENVIRONMENT；BOWEVER，TRADITIONALONBOARDNETWORKSYSTEMCAILNOTAFRORDTHATNEWMATERIALANDPROTOCOLARENEEDEDDATACANBCT啪SMITCEDAT齜SPEEDOFGB№INFIBRE礬ATISMORE，F(xiàn)IBRCHASTHEABIL畸OFANTIJ鋤MINGA11DBITEHDRRATELLLLDER10叫2，W11ICHPROVIDESHI曲RELIABILITY10WLATENCY，“GHISPEEDCOMMUNICATIONSOLUTIONT11ISPAPERIN打ODUCESTHEDEVELOPMENTHISTORYOFAVIOILICSNE柳OTI【INGTECLLILOLOGY，∞SEARCHESFIBRECHANNELTECHNOLOGY’DISCUSSESUPPERM印PINGPROTOCOLOFFIBRECHANNELIN耐ONICSENVIROMENT，ANDPROPOSESAILIMPLEMENTEDMC也ODOFFCLP助RECHANNEL1IGHT、ⅣEIGHTPMTOC01BECAUSEOFTHEREQUIREMEMFORHI曲RELIABILI饑LOWLATENCYANDHI曲SPEEDINAVIONJCSENVIRONMENT，WESIMPIIFIEDSCSICO咖ANDSA11DREDUCETHEHEADEROFDATA矗跏ETHETRAILSMITSPEEDISIINPROVEDTHEN，THEPAPERPROPOSEST11EDESIGLLANDHPLEMEMAT王ONOFTASKN1卸AG鋤EMWEDESIGNTLLREEQUEUESTOMANAGEDI臟RCNTTASKS，W11ICHWILLENSURCEVERYTASK1111DERCONTR01PRIORITYMECHANISMANDMILLISECONDOVEMMESYSTEMARCADOPTEDTOENSURERCALTIⅡLEP髓FBRNLANCEWEUSEDI恐REMPRIORITIESTODIS廿NGUISHTHEIINPORTANCEOFDI彘RENTDATA，AND“CTOVENIMESYSTEMTOENSLLRETASKSTOBEFINISHEDINSPECIFICALLYPERIODMEALL、，HILE，MTLLTISTATECHANNEL，INTE舒ATEDS詛1【ETRANSITIONPLALLATLDSYNCHRONOUS／ASYNCHRONOUSMODELAREDESI911EDTOIMPROVERCLIABILI可ANDNEXIBILI夠FINALLY，WETESTTHESYSTEM’SRELIA_BILITYANDCOMMUNICATIONPERFBRMANCEARERALONGTIMETEST，TLLERESULTSHOWSTLLATMESYSTEMMEETSRCQLLIREMENTSOFAVIONICSENVIM工LIILENTBO血INREALTIMEANDRELIABILITYFCLPSYSTEMISIMPORTAMTESEARCHNEXTGENERATIONA、，IONICSCOMMUNICATIONSYSTEMKEYWORDSAVIONICS，F(xiàn)C，F(xiàn)CLP，EMBEDDED，REALTIME，RELIABILITYII

簡介：匠兩L⑧目MR镕一M★天洋大尊TIANJLNUNVERSITY碩士學位論文學科專業(yè)絲蘭王莖作者姓名型盍擅指導教師苤擔盎塾撞天津大學研究生院2006年1月ABSTRACTCFITICFLTEMPERATURESANDPRESSURESOFFUELSAREIMPORTANTPARAMETERSFURRATINGOFMERITWHICHDEFINETHEPHASEBEHAVIORS，PERFORMANCEANDTEMPERATURERANGEOFFUELSAPPLIEDINTHEAIRPLANESANDHYPERSONICAIRCRAFTSINADDITIONTHEYAREVERYUSEFULINTHEINVESTIGATIONOFTHETHERMALDEGRADATIONORAGGREGATIONANDCARBONDEPOSITUNDERSUBSUPERERITICALCONDITIONSOFFUELSITISGENERALLYDIFFICULTTOMEASURETHECRITICALDATAOFFUELSDUETOITSCOMPLEXCOMPOSITIONUNSTABLEFEATURESANDHIGHERCRITICALVALUESINTHISTHESIS，VARIOUSEXPERIMENTALMETHODSANDTHEORYTODETERMINECRITICALPROPERTIESOFSUBSTANCEWEREINTRODUCEDONELOWRESIDENCETIMEFLOWEQUIPMENTFORTHEMEAGUREMEMOFTHECRITICALTEMPERATURESANDPRESSURESOFTHERMALUNSTABLEFLUIDSWAGDESIGNEDITIMPROVEDTHEORGMALMETHODSANDENLARGEDTHERANGEOFTEMPERATURESANDPRESSURESMEAGUREZL_，WITLLTHETESTEDTEMPERATUREAS0500。CANDTESTEXLPRESSURE雒05MPNPENTANE、NHEXANE、CYCLOHEXANEANDNDECANEWEREUSED嬲STANDARDREAGENTSTOCHEEKTHERELIABILITYOFTHEAPPARATUSTHEMAXIMUMDEVIATIONOFTEMPERATUREANDPRESSURESARE028。CANDO006MPARESPECTIVELYTHESERESULTSFULLYPROVETHATTHEAPPARATUSISRELIABLETODETERMINETHECRITICALDATAOFTHERMALUNSTABLEFLMDSTHECRITICALTEMPERATURESANDPRESSURESOFTWOENDOTHERMICHYDROCARBONFUELSRP3ANDSIMULATEJP7，ONEHIGLLENERGYFUELSJP10ANDMIXTURESOFJPLOWI也METHYLEYCLOHEXANEMC聊WEREDETERMINEDFORTHEFIRSTTIMEINADDITIONTHECRITICALDATAOFENDOTHERMIEAVIATIONFUELSOFRP3ANDSIMULATEJP7WEREESTIMATEDUSING6METHODSTHETEMPERATUREDEVIATIONWAGLESSTHAN6630C，ANDTHEPRESSUREDEVIATIONSAMONGESTIMATEDMETHODSHOWEVERCALLBEASMUCH硒O828MPATHEMAXILNUNLRELATIVEERTOROFTEMPERATURESANDPRESSURESWERE167％AND384％，RESPECTIVELYTHEAPIMETHODS，ANDRIAZIANDDANBERTCORRELATIONARERELATIVELYRELIABLEANEWMETHODTODETERMINETHECRITICALDATAUSINGHIGHPRESSUREDIFFERENTIALSCANNINGCALORIMETRYWAGPROPOSED，WHICHCANINFERREDTHECRITICALTEMPERATURESANDPRESSURESFROMVARIOUSDSCCURVESUNDERDIFFERENCESMEASURINGPRESSURETHECRITICALDATAOFNPENTANEANDJP10WEREOBTAINEDFROMTHISMETHOD，THERESULTSWERE19760CAND337MPA4238。CAND360MP丑RESPECTIVELYTHERESULTSWEREINGOODAGREEMEMWITHTHEPUBLISHEDDATAINDICATINGTHATTHISMETHODISRELIABLEINPRACTICAL

簡介：南京航空航天大學碩士學位論文航空發(fā)動機混疊振動信號的盲源分離研究姓名陽平申請學位級別碩士專業(yè)航空宇航推進理論與工程指導教師李舜酩20080101航空發(fā)動機混疊振動信號的盲源分離研究IIABSTRACTMODERNSIGNALPROCESSINGMETHODSCAN’TSEPARATETHECOMPLICATEDMULTIMIXEDVIBRATIONSIGNALSEFFECTIVELYWITHOUTANYPREINFMATIONASONEOFTHEHOTTESTMOSTEXCITINGTOPICSINTHEFIELDSOFSIGNALPROCESSINGATPRESENTBLINDSOURCESEPATIONBSSISPAIEDATTENTIONFSOLVINGTHISPROBLEMBUTTHERESEARCHESAREMOSTLYABOUTTHETHEYSIMULATIONLITTLEININTHEREALSIGNALAPPLICATIONTHEMAJWKOFTHISPAPERISTORESEARCHTHEEXISTINGMETHODSOFBSSTHENGETSOMEIMPROVEDMETHODSFITTEDFSEPARATINGTHEVIBRATIONSIGNALSWHICHWILLPROVIDEANEWWAYFTHESTATESTIRINGDIAGNOSISOFAIRCRAFTENGINESTHESPECIFICWKASFLOWERING1ANALYSEDEXPLAINEDTHEINDEPENDENTCOMPONENTANALYSISICATHEYALGITHMINDETAILGAVETHECLASSOFCEFUNCTIONAWAYOFITSION2PROPOSEDANIMPROVEDALGITHMCALLEDICAWITHREFERENCEICARWHICHISCOMBINEDWITHACTERSOFTHEVIBRATIONSIGNALTOPURSUITTHEEXPECTEDONETHROUGHSIMULATIONANALYSISTHISTECHNIQUEHASNOTONLYMESEPARATINGPRECISIONBUTALSOFASTERCONVERGENCETHANTRADITIONALMETHODS3ANALYSEDSTSOFVIBRATIONEXPERIMENTSUSINGBSSACHIEVEDSOMEAVAILABLECONCLUSIONSADAPTIVEMETHODSWHICHWASSUCCESSFULTOCONFIRMTHEVALIDITYOFBSSAPPLIEDTOSEPARATINGVIBRATIONSIGNAL4ABSSPACKAGEUSINGMATLABVCSOFTWARESWASDESIGNEDBASEDONTHETHEYOFSETTINGPARAMETERSTHISPACKAGEMADETHEOPERATIONOFBSSSIMULATIONSAPPLICATIONSCONVENIENTLYUNDERAGRAPHICALINTERFACESCONTROLKEYWDSBLINDSOURCESEPARATIONBSSVIBRATIONSIGNALCEFUNCTIONINDEPENDENTCOMPONENTANALYSISWITHREFERENCEICARBSSPACKAGE

簡介：分類號密級UDC編號專業(yè)碩士學位論文（工程碩士）航空用可快拆蜂窩夾層艙門強度等效模型研究碩士研究生劉祥指導教師陳東良副教授企業(yè)導師季寶鋒工程師工程領域機械工程論文主審人王茁教授哈爾濱工程大學2014年5月分類號密級UDC編號專業(yè)碩士學位論文（工程碩士）航空用可快拆蜂窩夾層艙門強度等效模型研究碩士研究生碩士研究生劉祥指導教師指導教師陳東良副教授學位級別學位級別工程碩士工程領域工程領域機械工程所在單位所在單位機電工程學院論文提交日期論文提交日期2014年5月論文答辯日期論文答辯日期2014年6月學位授予單位學位授予單位哈爾濱工程大學

簡介：上海交通大學碩士學位論文航空發(fā)動機變比熱容熱力計算和系統(tǒng)級仿真研究姓名韋福申請學位級別碩士專業(yè)航空宇航推進理論與工程指導教師杜朝輝20060201上海交通大學碩士論文摘要II和組分燃氣的復雜函數(shù)其中壓力對比熱容的影響很小氣體經(jīng)過燃燒室和燃油混合燃燒后生成的燃氣由多種不同性質的物質組成而且隨著余氣系數(shù)不同其成分及比例不同物性也不一樣如果都考慮每種氣體的比熱容就會給計算帶來困難為了計算方便將系統(tǒng)的工質分為空氣和純?nèi)細庥扇剂吓c理論空氣量完全燃燒而成的的混合分別考慮他們的比熱容如果是燃燒室前的模塊比如進氣道壓氣機等可把其工質看成燃氣為零的混合氣體純空氣一般的比熱容是按照空氣和純?nèi)細獾谋葻崛莞鶕?jù)質量分數(shù)關系線性組合而成的然后對每一模塊建立變比熱容的數(shù)學計算模型同時以單軸渦輪噴氣式發(fā)動機為算例進行計算仿真跟用軟件GASTURB和定比熱計算的結果相比較證明變比熱的計算結果合理性和更接近物理實際以及有推廣應用的價值最后利用已有的模塊庫對常見的發(fā)動機系統(tǒng)比如渦輪噴氣渦輪軸渦輪螺漿渦輪風扇等進行系統(tǒng)建模仿真并對它們進行設計點和非設計點的熱力計算非設計點仿真計算包括速度特性高度特性和節(jié)流特性的計算還有過渡工作狀態(tài)比如啟動加速減速接通加力與斷開加力等仿真從計算結果的分析和與GASTURB的計算相比較中可以看出利用MODELICADYMOLA進行建模仿真的方法具有有效性通用性合理性可行性和便捷性等關鍵詞航空發(fā)動機模塊化建模變比熱容仿真DYMOLAMODELICA

簡介：南京航空航天大學碩士學位論文XRF和顯微圖像技術在航空發(fā)動機智能監(jiān)測中的綜合應用姓名羅鋒申請學位級別碩士專業(yè)載運工具運用工程指導教師李艷軍20090101XRF和顯微圖像技術在航空發(fā)動機智能監(jiān)測中的綜合應用IIABSTRACTAEROENGINESUPPLIESTHEMAJORMOTIVEPOWERTOTHEMODERNAIRCRAFT,SOTHESTATUSINSPECTIONOFTHEAEROENGINEOPERATIONPLAYSUNDOUBTEDLYANIMPORTANTROLEACCORDINGTODIFFERENTOBJECTS,THECONCLUSIONOFFUSEINGSEVERALDIFFERENTMONITORINGMEANSISMOREACCURATELYTHISPAPERBEASEDONXRFXRAYFLUORESCENCETECHNOLOGYANDINTRODUCINGARTIFICIALNEURALNETWORK,GRAYSYSTEMTHEORY,PROBABILITYSTATISTICS,DEMPSTERSHAFEREVIDENTIALTHEORYANDOTHERINTELLIGENTCALCULATION，INORDERTODEVELOPAINTELLIGENTMONITORINGSYSTEMXRFXRAYFLUORESCENCETECHNOLOGY,USINGISOTOPERADIOACTIVESOURCESTOERADIATEMATERIALSWHICHTOBEMEASURED,PRODUCESENERGYSPECTRUMTHROUGHASERIESOFINSTALLATIONS,WHICHISUSEDTODETERMINETHEELEMENTALMATERIALCATEGORIESMICROSCOPICIMAGETECHNIQUEWHICHWITHTHEFUNCTIONSOFPARTICLECOUNTERANDFERROGRAPH,ACHIEVEDTHEDIAGNOSISONTHEAEROENGINEWEARFAULTSBYUSEINGMCROSCOPICOPTICALIMAGINGSYSTEMANDDIGITALIMAGEPROCESSINGMETHODTHERESEARCHWORKMAINLYINCLUDESTHEFOLLOWINGTHREEASPECTSFIRSTLY,PROCESSEDXRFENERGYSPECTRUMANDOUTPUTTEDTHEELEMENTCONCENTRATIONSRESEARCHEDTHEMETHORDOFCALCULATINGTHETHRESHOLDVALUEOFTHECONCENTRATIONOFTHEWEARDEBRISANDFORECASTEDTHEWEARFAULTBYGREYPREDICTIONSECONDLY,BASEDONTHENUMBERANDPARAMETERSOFWEARDEBRIS,FUSINGTHERADIALBASEDFUNCTIONRBFNEURALNETWORK,BACKPROPAGATIONBPNEURALNETWORKANDGREYRELATIONALANALYSISMETHODS,IMPROVINGTHEACCURACYRATEOFDEBRISAUTORECOGNITIONBASEDONTHECOLLECTEDINFORMATIONOFTHEDEBRISCONFIGURATIONCHARACTERISTICSANDCONDUCTINGTHEDIAGNOSISONTHEAEROENGINEWEARFAULTSACCORDINGTOTHERECOGNITIONFINALLY,ASYNTHETICINTELLIGENTDIAGNOSISMODELBYDATAFUSIONFAULTDIAGNOSISMETHODBASEDONABOVEDIAGNOSISMETHODWASPUTFORWARD,ANINTELLIGENTMONITORINGSOFTWARESYSTEMOFAEROENGINEISDEVELOPEDBASEDONTHEABOVERESEARCHKEYWORDSAEROENGINE,WEAR,XRF,DEBRISANALYSIS,INFORMATIONFUSION,INTELLIGENTANALYSIS

簡介：分類號UDCY1043656學位論文題目航空發(fā)動機主燃燒室CFD的工程適用性研究研究生姓名于芳學科專業(yè)名稱航空宇航推進理論與工程研究方向航空發(fā)動機燃燒設計與分析技術申請學位碩士指導教師姓名徐讓書指導教師職稱教授指導教師單位沈陽航空工業(yè)學院論文提交日期2007年01月LO日論文答辯日期2007年01月20日學位授予日期2007年月日答辯委員會主席綴教授／評閱人承勰睇嚏助弓FC宕濃教瞧沈陽航空工業(yè)學院2007年1月沈陽航空工業(yè)學院頓十學位淪文ABSTRAETENGINEERINGAPPLICABILITYOFAEROENGINECOMBUSTORCFDHASBEENRESEARCHEDANDVERIFIEDWITHACERTAINENGINECOMBUSTORASTHEPROTOTYPETHEGOALISTOVERIFYANDVALIDATETHEENGINEERINGAPPLICABILITYOFNUMERICALCALCULATIONMETHODANDVARIOUSPHYSICALMODEISINTHEAEROENGINECOMBUSTORCFDTHISPAPERBRIEFLYDESCRIBESTHESTATUSANDDEVELOPMENTOFCOMBUSTORCFDENGINEERINGAPPLICABILITYWITHDEEPLYINVESTIGATIONATHOMEANDABROADTHEWORKPROGRESSOFTHEAEROENGINECOMBUSTORANDTHEORYOFMULTIDISCIPLINARYCFDISGIVENINDETAIL，ANDTHENTHERESEARCHPROJECTISPUTFORWORDANDNUMERICALMODELSAREBUILTTHESOLUTIONDOMAINOFTHEPROBLEMISDELIMITEDANDSIMPLIFIEDINTHESIMULATION，F(xiàn)ILMCOOLINGHOLEROWSISSUBSTITUTEDWITHSLOTSFILLEDWITHPOROUSMEDIATOSIMPLIFYTHEGEOMETRYOFTHECOMBUSTOR；THESOLUTIONDOMAINISMESHEDWITHMANUALHEXAHEDRONCOREMETHODTHESIMULATIONCHOOSESREAL拓ABLEKETURBULENCEMODEL，PRESSURESWIRLATOMIZERMODE、ANDNONPREMIXEDCOMBUSTIONMODE、TOSIMULATETHETURBULENTFLOW，F(xiàn)UELSPRAYANDTURBULENTCOMBUSTION；THERELATIONSOFMATERIALTHERMOLPROPERTIESWITLLTEMPERATUREAREFITTEDUSINGATEMPERATUREDEPENDENTFUNCTIONTHEGOVERNINGEQUATIONSARESOLVEDUSINGCOMMERCIALCFDSOFTWAREONAHIGHPERFORMANCECOMPUTERCLUSTERHPCCWITHPARALLELPROCESSINGANDHIGHORDERDESCRETIZATIONSCHEME，THENUMERICALSOLUTIONOFFLOW，F(xiàn)UELSPRAYANDTOWPHASEFLOWANDCOMBUSTIONINTHECOMBUSTORHAVEBEENOBTAINEDTHEENGINEERINGAPPLICABILITYOFTHEAEROENGINCCOMBUSTORCFDISDISCUSSEDBYANALYZINGTHESOLUTIONANDCOMPARINGWITHEXPERIMENTALDATATHERESULTSINDICATETHATTHECALCULATIONISREASONABLEANDSATISFIESTHEREQUIREMENTOFENGINEERINGTHISPAPERVALIDATESTHEENGINEERINGAPPLICABILITYOFTHECOMBUSTORNUMERICALSIMULATIONANDALSOPOINTSOUTTHEPROBLEMOFTHECOMBUSTORMODELTHATNEEDSTOBEIMPROVED，THECONCLUSIONISMEANINGFULFORCOMBUSTORDESIGNANDRESEARCHKEYWORDSCFD；AIROENGINECOMBUSTOR；ENGINEERINGAPPLICABILITY；SPRAY；COMBUSTION

簡介：中國民用航空學院碩士學位論文多航空器沖突檢測與優(yōu)化解脫研究姓名劉煜堃申請學位級別碩士專業(yè)交通運輸規(guī)劃與管理指導教師徐肖豪聶潤兔20060426

簡介：天津大學碩士學位論文基于航空照相槍的飛機姿態(tài)測量姓名汪偉申請學位級別碩士專業(yè)測試計量技術及儀器指導教師王向軍20070101ABSTRACTAIRBORNEFIRECONTROLCAMERAGUNISAKINDOFPHOTOGRAPHICANDRECORDINGEQUIPMENTADOPTEDGENERALLYONTHEFIGHTERPLANEITISOFTENINSTALLEDONTHEAIRFOIL，AIRCRAFTNOSEANDCOCKPITWHENFIREBUTTONISPRESSED，CAMERAGUNTAKESPHOTOSOFTARGETALONEORTOGETHERWITHGUNSYSTEMTHEEFFECTOFTRAININGORCOMBATCANBECHECKEDBYWHATCAMERAGUNSHOTATPRESENTTRADITIONALFILMCAMERAGUNHASBEENMOSTWIDELYUSEDONTHEFIGHTERPLANEFILMCAMERAGUNCANNOTSATISFYTHEFLIGHTTRAININGPURPOSEASARESULTOFSOMEDISADVANTAGESOFFILM，SUCHASHIGHCOSTLOWACCURACYANDWHICHISHARDTOSAVETHEIMAGEWHICHISCOLLECTEDBYCAMERAGUNSHOULDBEINTERPRETEDANDANALYZEDWHENTHEFLIGHTTRAININGISFINISHEDTHEREARETWOKINDSOFINTERPRETATIONMETHODBYUSINGFILMCAMERAGUNWHENTHEFLIGHTTRAININGISFINISHEDONEISEMPIRICALINTERPRETATION，THEOTHERISMANUALINTERPRETATIONEMPIRICALINTERPRETATIONCALLWORKEFFECTIVELYWHENTHESHOOTINGDISTANCEISSHORTANDAIRMANMUSTHAVERICHEXPERIENCECOMPAREDWITHTHEEMPIRICALINTERPRETATIONMANUALINTERPRETATIONISOFSOMEACCURACYBUTTHISMETHODISCOMPLEXWHICHNEEDADJUSTMAGNIFICATIONOFIMAGEANDSELECTDIFFERENTINTERPRETATIONACCORDINGTODIFFERENTFIREKINDSITISNECESSARYTOIMPROVETHETRADITIONALFILMCAMERAGUNANDINTERPRETATIONMETHODWITHTHEIMPROVEMENTOFARMYEQUIPMENTANDTHEPROGRESSOFTRAININGREQUIREMENTSTHISPAPERUSESDIGITALEQUIPMENTTORECORDFIRINGEFFECTTHEDESIGNWHICHISCOMPOSEDOFCMOSIMAGINGSENSORUSINGFORIMAGINGCHIP，HIGHCAPACITYFLASHUSINGFORDATAMEMORYANDCPLDUSINGFORCONTROLUNITCANREPLACEFILMCAMERAGUNUSBDATASWITCHISDESIGNEDINORDERTOTRANSFERDATAWHICHISCOLLECTEDBYDIGITALCAMERAGUNTOPCATTITUDEANGLECANBECALCULATEDBYIMAGEANALYSISANDSPECIFICALGORITHMFIRSTOFALL，ASERIESOFIMAGESPREPROCESSINGTECHNIQUESWASTAKENTOEXTRACTTHEPRECISEEDGEOFTARGETIMAGETHEFOURCHARACTERISTICPOINTSOFTHEAIRCRAFTAREEXTRACTEDAFTERIDENTIFYINGTARGETPROFILEANDTHEKEYPOINTCANALSOBEOBTAINEDTHEMEASUREMENTPRINCIPLESANDMETHODOFAIRCRAFTATTITUDEANGLEBASEDONASINGLEIMAGEPLANEISRESEARCHEDBYUSINGPINHOLEPROJECTIONMODELBASEDONTHEKNOWNPARAMETERSINFORMATIONOFTHEAIRCRAFTANDOPTICALSYSTEMSINFORMATION，AIRCRAFT