簡(jiǎn)介：華中科技大學(xué)碩士學(xué)位論文針對(duì)航天繼電器電弧的輸運(yùn)系數(shù)理論計(jì)算與輸運(yùn)特性研究姓名鮑明暉申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)高電壓與絕緣技術(shù)指導(dǎo)教師何俊佳20070601IIABSTRACTAEROSPACERELAYISONEOFTHEMOSTACCESSIESINVARIOUSDEEPEXPLINGAEROCRAFTARCWILLHAPPENWHENTHERELAYCONTACTSBREAKCLOSEWHICHCANMAKETHECONTACTWKINGCONDITIONBADINFLUENCETHEWKINGLIFERELIABILITYOFAEROSPACERELAYBADLYTHEREFEITISIMPTANTTODOSOMERESEARCHONTHEARCACTERISTICOFAEROSPACERELAYFIMPROVINGITSWKINGLIFERELIABILITYARCPHENOMENONISATRADITIONPROBLEMRESEARCHERSINOURCOUNTRYABROADHAVEDONEMUCHWKONITHOWEVERMOSTOFTHEIRWKAREFROMMACROSCOPICPOINTWHILEFEWISFROMMICROSCOPICPOINTINTHISPAPERAIMDATTHEARCPHENOMENONOFAEROSPACERELAYFROMMICROSCOPICPOINTBASEDONTHEBASICTHEYOFTRANSPTPROPERTIESSIMPLIFIEDTHEDISTRIBUTINGFUNCTIONTHECOLLISIONTERMOFTHEBOLTZMANNFUNCTIONCOMBINEDTHEDEFINITIONOFTRANSPTCOEFFICIENTSBOLTZMANNFUNCTIONSIMPLIFIEDCALCULATIONFMULASOFTRANSPTCOEFFICIENTSAREDERIVEDTHENSIMPLIFYTHECALCULATIONINMIXTURESBYMIXTURERULESBYTHISCALCULATIONMETHODTHETRANSPTCOEFFICIENTSINNITROGENISCALCULATEDWITHDIFFERENTPRESSURESMETALVAPPROPTIONSASWELLASINPUREMETALVAPWITHDIFFERENTPRESSURESTHERESULTINDICATESTHATTHEINFLUENCESOFTHESEFACTSTOTRANSPTPROPERTIESAREWELLREGULATEDTHECONCLUSIONSINTHISPAPERDOBASICWKFTHEFURTHERRESEARCHOFTRANSPTPROPERTIESMACROPROPERTIESOFTHEARCINAEROSPACERELAYKEYWDSARCTRANSPTCOEFFICIENTSTRANSPTPROPERTIESRELAY

簡(jiǎn)介：西安電子科技大學(xué)學(xué)位論文獨(dú)創(chuàng)性或創(chuàng)新性聲明秉承學(xué)校嚴(yán)謹(jǐn)?shù)膶W(xué)風(fēng)和優(yōu)良的科學(xué)道德，本人聲明所呈交的論文是我個(gè)人在導(dǎo)師指導(dǎo)下進(jìn)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(biāo)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(xiě)過(guò)的研究成果；也不包含為獲得西安電子科技大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書(shū)而使用過(guò)的材料。與我一同工作的同志對(duì)本研究所做的任何貢獻(xiàn)均已在論文中做了明確的說(shuō)明并表示了謝意。申請(qǐng)學(xué)位論文與資料若有不實(shí)之處，本人承擔(dān)一切的法律責(zé)任。本人簽名蘭逝日期迦蘭2』西安電子科技大學(xué)關(guān)于論文使用授權(quán)的說(shuō)明本人完全了解西安電子科技大學(xué)有關(guān)保留和使用學(xué)位論文的規(guī)定，即研究生在校攻讀學(xué)位期間論文工作的知識(shí)產(chǎn)權(quán)單位屬西安電子科技大學(xué)。學(xué)校有權(quán)保留送交論文的復(fù)印件，允許查閱和借閱論文；學(xué)?？梢怨颊撐牡娜炕虿糠謨?nèi)容，可以允許采用影印、縮印或其它復(fù)制手段保存論文。同時(shí)本人保證，畢業(yè)后結(jié)合學(xué)位論文研究課題再撰寫(xiě)的文章一律署名單位為西安電子科技大學(xué)。本人簽名至逝導(dǎo)師簽名牲日期趁絲2』技術(shù)；在ANSYSWORKBENCH中快速的模擬了國(guó)軍標(biāo)規(guī)定的隨機(jī)振動(dòng)環(huán)境和沖擊振動(dòng)環(huán)境；對(duì)縮減機(jī)箱模型進(jìn)行了模態(tài)分析、隨機(jī)振動(dòng)分析、沖擊響應(yīng)分析，獲得了結(jié)構(gòu)的固有特性及振動(dòng)響應(yīng)特性。經(jīng)過(guò)論證，發(fā)現(xiàn)分析結(jié)果與實(shí)際情況大致相符，從而表明本文的工作是有效的。關(guān)鍵詞有限元分析ANSYSWORKBENCH有限元建模模態(tài)分析隨機(jī)振動(dòng)分析沖擊振動(dòng)分析

簡(jiǎn)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(xué)博士學(xué)位論文學(xué)生姓名黃杰指導(dǎo)教師曾孝平教授專(zhuān)業(yè)通信與信息系統(tǒng)學(xué)科門(mén)類(lèi)工學(xué)重慶大學(xué)通信工程學(xué)院二O一七年四月STUDYONRESOURCEALLOCATIONINNONCONTINUOUSSPECTRUMFLBDIGITALAERONAUTICALCOMMUNICATIONSYSTEMATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEDOCT’SDEGREEOFENGINEERINGBYHUANGJIESUPERVISEDBYPROFZENGXIAOPINGSPECIALTYCOMMUNICATIONINFMATIONSYSTEMCOLLEGEOFCOMMUNICATIONENGINEERINGOFCHONGQINGUNIVERSITYCHONGQINGCHINAAPRIL2017

簡(jiǎn)介：航天器這類(lèi)大型系統(tǒng)的復(fù)雜性與實(shí)時(shí)診斷的需求是兩個(gè)互相制約的問(wèn)題。探求一種有效的智能化的航天器故障診斷方法，解決復(fù)雜系統(tǒng)故障診斷的分離算法計(jì)算量大、計(jì)算時(shí)間長(zhǎng)等難題，能夠?qū)崿F(xiàn)航天器的自主化，保障航天器的高可靠、長(zhǎng)壽命運(yùn)行。本學(xué)位論文以國(guó)防“十五”預(yù)研項(xiàng)目（02413200204242）“衛(wèi)星長(zhǎng)壽命高可靠性技術(shù)”為研究背景，為提高日益復(fù)雜的航天器系統(tǒng)的故障診斷能力，研究了適合于航天器不同系統(tǒng)的層次診斷模型，并詳細(xì)討論了各層次模型的構(gòu)建技術(shù)及診斷算法。系統(tǒng)地研究了結(jié)構(gòu)抽象和行為抽象技術(shù)。充分利用航天器在組成單元上的天然分層結(jié)構(gòu)，利用抽象技術(shù)建立層次診斷模型，實(shí)現(xiàn)復(fù)雜系統(tǒng)的結(jié)構(gòu)簡(jiǎn)化。當(dāng)已知系統(tǒng)的先驗(yàn)概率時(shí)，采用高效的拉格朗日松弛和啟發(fā)式算法，并結(jié)合傳播強(qiáng)度法來(lái)共同實(shí)現(xiàn)多故障診斷；當(dāng)系統(tǒng)的先驗(yàn)概率未知時(shí)，提出用與系統(tǒng)領(lǐng)域相關(guān)的方程組成的約束集進(jìn)行一致性分析的方法來(lái)進(jìn)行診斷，并在診斷推理時(shí)引入定量知識(shí)，從而實(shí)現(xiàn)故障的精確定位。根據(jù)衛(wèi)星熱控系統(tǒng)的特點(diǎn)，提出把基于圖論的故障診斷技術(shù)引入到結(jié)構(gòu)抽象技術(shù)中來(lái)，構(gòu)建了某衛(wèi)星熱控系統(tǒng)層次診斷模型。研究了基于功能單元的抽象技術(shù)，詳細(xì)介紹了功能單元的描述及功能單元抽象的基本規(guī)則。深入探討了用于診斷推理的三類(lèi)基本定理，并提出了新穎的診斷推理策略，給出了診斷推理步驟。針對(duì)衛(wèi)星電源系統(tǒng)具有某種流動(dòng)介質(zhì)或者可以稱(chēng)為一種廣義流的特點(diǎn)，構(gòu)建了某衛(wèi)星電源系統(tǒng)的基于功能單元的層次診斷模型（SPS樹(shù)）研究了以系統(tǒng)辨識(shí)為工具進(jìn)行行為抽象進(jìn)而建立層次模型的建模技術(shù)。針對(duì)傳統(tǒng)基于參數(shù)估計(jì)的故障診斷技術(shù)存在的弊端，提出了一種新診斷思路。詳細(xì)地介紹了抽象樹(shù)的建立準(zhǔn)則，系統(tǒng)地研究了采用的行為抽象法BOXJENKINS建模法所包含的四項(xiàng)基本技術(shù)，對(duì)其中的一項(xiàng)關(guān)鍵技術(shù)參數(shù)估計(jì)采用了一種新的不對(duì)稱(chēng)動(dòng)態(tài)數(shù)據(jù)窗的方法。對(duì)某衛(wèi)星進(jìn)行了應(yīng)用仿真。針對(duì)分布式應(yīng)用對(duì)象，研究了一種基于語(yǔ)言抽象的分布式層次診斷模型。詳細(xì)地介紹了規(guī)則語(yǔ)言的數(shù)學(xué)基礎(chǔ)語(yǔ)言和相關(guān)工具的定義。深入地研究了全局一致性的分布式診斷技術(shù)及多步分辨診斷（MULTIRESOLUTIONDIAGNOSIS）的計(jì)算方法。提出了由下至上構(gòu)建層次模型結(jié)構(gòu)，由上至下進(jìn)行分層計(jì)算的策略。建立了某衛(wèi)星測(cè)控系統(tǒng)的分布式層次診斷模型。以“風(fēng)云一號(hào)”衛(wèi)星為應(yīng)用背景，開(kāi)發(fā)了衛(wèi)星及診斷平臺(tái)。論述了軟件系統(tǒng)設(shè)計(jì)原則及基本設(shè)計(jì)思想，平臺(tái)以層次模型故障診斷理論為基礎(chǔ)，并結(jié)合模糊推理及專(zhuān)家系統(tǒng)診斷實(shí)現(xiàn)了三種方法的相互配合診斷。

簡(jiǎn)介：西北工業(yè)大學(xué)碩士學(xué)位論文基于星光折射航天器自主軌道確定姓名唐瓊申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)飛行器設(shè)計(jì)指導(dǎo)教師袁建平20070301西北工業(yè)大學(xué)碩上學(xué)位論文ABSTRACTW池THEDEVELOPPINGOFDEEPSPACEEXPLORATIONALLDMALLNEDSPACECRARTECKLOLOGY，THESTUDYOFTHEAUTONOMOUSNAVIGATIONFORSPACECM丘B(yǎng)ECOMESAHOTSPOTINA11DABROAD111ISPAPERDESCRIBESAILA11ALYSIS0F趴AUTONOMOUSILAVIGATORUSINGRE行ACTIONMEASU崩NENTSOFS協(xié)RLI曲TPASSINGMROUGLLTHEUPPERA餉OSPHERETHEMAINWORKINTHEPAPERIS髂FOLLOWSI、SPACECRMMODELINGSTUDYASFORTILEEANH耐ENTCD廿HEEA【ISSTABILIZEDSATEILITE，APRECISEORBITDYNAMICSMODELISESTABLISHEDINTTLEGEOCEMRICEQUATORIALINEMALCOOFDINATE，CONSIDERINGTHEINFLUENCEOFTHEPERTURB撕ONDUETOMEEARTLLSH印E，THESULL一M00NGMVI詛TIONA11DT11ESILLLLI曲TPRESSUREBASEDON山EPRECISEORBITDYNAMICSMODEL，THESTATE如NCTIONOFSPACECRAFTAMONOMOUSNAVIGATIONSYSTE珊ISESTABLISHED2、SPACECRAFTAUTONOMOUSNAVIGATIONTECHNOLOGYBASEDONTHESTELLAR耐ACTIONIS咖DMUSINGTHEOBSEⅣATIONI廊RNLATIONMEASUREDBYCCDSTARSENSORSANDTHESTARCATALOGSAVED，THESTELLARREFRACTIONANGLEISDETEMLINEDB嬲EDONTHEOBSERVATION如NCTION，MEPOSITIONAILDVELOCITYOFTLLESPACECRAFTAREDETE珊INATEDBYMEEKFANDUKFANDCOMPARCWITHTHEDIFFERENTOFTHEOBSEN，ATION內(nèi)NCTIONS3、THCFACTOFSOFDETEMININGORBITPRECISION瓣STUDIEDTHEIIMITEDCONDITIONOFSELECTINGTHESTARISDISCUSSEDFURNLERMORE，MEEFFECTSOF齜ATMOSPHEDCREFACTIONMODEL，THEFILTERINGAIGORITTLMOFILAVIGATION，MESTARSEMORPRECISION，S鋤PLEPERIOD，ANDSI曲TINGSTARN岫BERSONDETERNLININGORBITPRECISIONARESTILDIED，A11DSIMULATEONCOMPMERKEYWORDSAUTONOMOUSNAVIGATION，STEILARREFRACTION，CCDSTARSENSOR，EXTENDEDKALMAILFILIERUNSCENTEDKALMALLFILTERII

簡(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文航空公司飛機(jī)恢復(fù)系統(tǒng)問(wèn)題初步研究姓名柏強(qiáng)申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)交通運(yùn)輸規(guī)劃與管理指導(dǎo)教師胡明華20060101航空公司飛機(jī)恢復(fù)問(wèn)題初步研究IIABSTRACTAIRLINESARECONSTANTLYFACEDWITHDISRUPTIONPROBLEMSANDCANNOTEXECUTETHEIRSCHEDULESASPLANNEDBECAUSEOFSEVEREWEATHERPATTERNS,UNEXPECTEDAIRCRAFTMECHANICALFAILURES,CONGESTIONATAIRPORTETCWHENADISRUPTIONOCCURS,THEAIRLINEHAVETORESCHEDULEFLIGHTLEGS,NEEDAPOLICYTODECIDEWHICHFLIGHTLEGSNEEDTOBEDELAYEDANDWHICHONESNEEDTOBECANCELLED,ANDREROUTETHEAIRCRAFTS,CREWS,ANDPASSENGERSTHISPAPERSUMMARIZEDTHESOLUTIONSCURRENTLYADOPTEDBYAIRLINESUNDERTHECIRCUMSTANCESOFINTERRUPTIONSAFTERFULLYMASTERINGTHECOREBUSINESSOFTHEMOSTIMPORTANTDEPARTMENTOFAIRLINESAOCAFTERWARDS,SEVERALEXISTINGMODELSOFAIRLINESRECOVERYWEREREVIEWEDANDTHEAIRLINESINTEGRATEDRECOVERYMODELWASINTRODUCEDINDETAILSTHEAIRCRAFTRECOVERYMODELWITHTHEINTENTIONOFMINIMIZINGAIRLINESOPERATINGCOSTWASRESEARCHEDINDEPTH,INCLUDINGESTABLISHMENTOFTHEMODELANDTHECORRESPONDINGALGORITHMTHESOLUTIONTOTHEAIRCRAFTRECOVERYPROBLEMWASPROPOSEDANDAHEURISTICALGORITHMWASPUTFORWARDTOENGAGECERTAINAIRCRAFTSINTHEREROUTINGCALCULATIONACCORDINGTOTHEDIFFERENTKINDSOFINTERRUPTIONSFINALLY,BASEDONTHEABOVEAIRCRAFTRECOVERYSOLUTION,ADECISIONSUPPORTTOOLOFAIRCRAFTRECOVERYWASDEVELOPEDBYUTILIZINGOFCOMPUTERDEVELOPINGTOOLS,WHICHONTHEOTHERHANDVERIFIEDTHEAIRCRAFTRECOVERYMODELKEYWORDSAIRLINEIRREGULAROPERATION,AIRLINERECOVERYPROBLEM,AIRCRAFTRECOVERY,OPTIMIZATIONMODEL

簡(jiǎn)介：中圖分類(lèi)號(hào)V214論文編號(hào)102870113S049學(xué)科分類(lèi)號(hào)080104碩士學(xué)位論文航空結(jié)構(gòu)關(guān)鍵部位損傷識(shí)別方法研究研究生姓名金培學(xué)科、專(zhuān)業(yè)工程力學(xué)研究方向結(jié)構(gòu)健康監(jiān)測(cè)指導(dǎo)教師周麗教授南京航空航天大學(xué)研究生院航空宇航學(xué)院二○一三年三月NANJINGUNIVERSITYOFAERONAUTICSANDASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFAEROSPACEENGINEERINGRESEARCHONDAMAGEDETECTIONMETHODSFORAEROSPACESTRUCTURALHOTSPOTSATHESISINENGINEERINGMECHANICSBYJINPEIADVISEDBYPROFZHOULISUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFENGINEERINGDECEMBER,2012

簡(jiǎn)介：分類(lèi)弓V23題目學(xué)佼代碼10699研究生學(xué)號(hào)046076382西北工業(yè)大學(xué)碩士學(xué)位論文學(xué)位研究生作者趔D態(tài)學(xué)科專(zhuān)業(yè)控劍堡途皇控劍工猩指導(dǎo)教師楚工2007年3月西北工業(yè)大學(xué)碩士學(xué)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(jiǎn)介：西北工業(yè)大學(xué)碩士學(xué)位論文光纖通道在航空計(jì)算領(lǐng)域的研究和應(yīng)用姓名宋少峰申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)計(jì)算機(jī)科學(xué)與技術(shù)指導(dǎo)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(jiǎn)介：匠兩L⑧目MR镕一M★天洋大尊TIANJLNUNVERSITY碩士學(xué)位論文學(xué)科專(zhuān)業(yè)絲蘭王莖作者姓名型盍擅指導(dǎo)教師苤擔(dān)盎塾撞天津大學(xué)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(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文航空發(fā)動(dòng)機(jī)混疊振動(dòng)信號(hào)的盲源分離研究姓名陽(yáng)平申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)航空宇航推進(jìn)理論與工程指導(dǎo)教師李舜酩20080101航空發(fā)動(dòng)機(jī)混疊振動(dòng)信號(hào)的盲源分離研究IIABSTRACTMODERNSIGNALPROCESSINGMETHODSCAN’TSEPARATETHECOMPLICATEDMULTIMIXEDVIBRATIONSIGNALSEFFECTIVELYWITHOUTANYPREINFMATIONASONEOFTHEHOTTESTMOSTEXCITINGTOPICSINTHEFIELDSOFSIGNALPROCESSINGATPRESENTBLINDSOURCESEPATIONBSSISPAIEDATTENTIONFSOLVINGTHISPROBLEMBUTTHERESEARCHESAREMOSTLYABOUTTHETHEYSIMULATIONLITTLEININTHEREALSIGNALAPPLICATIONTHEMAJWKOFTHISPAPERISTORESEARCHTHEEXISTINGMETHODSOFBSSTHENGETSOMEIMPROVEDMETHODSFITTEDFSEPARATINGTHEVIBRATIONSIGNALSWHICHWILLPROVIDEANEWWAYFTHESTATESTIRINGDIAGNOSISOFAIRCRAFTENGINESTHESPECIFICWKASFLOWERING1ANALYSEDEXPLAINEDTHEINDEPENDENTCOMPONENTANALYSISICATHEYALGITHMINDETAILGAVETHECLASSOFCEFUNCTIONAWAYOFITSION2PROPOSEDANIMPROVEDALGITHMCALLEDICAWITHREFERENCEICARWHICHISCOMBINEDWITHACTERSOFTHEVIBRATIONSIGNALTOPURSUITTHEEXPECTEDONETHROUGHSIMULATIONANALYSISTHISTECHNIQUEHASNOTONLYMESEPARATINGPRECISIONBUTALSOFASTERCONVERGENCETHANTRADITIONALMETHODS3ANALYSEDSTSOFVIBRATIONEXPERIMENTSUSINGBSSACHIEVEDSOMEAVAILABLECONCLUSIONSADAPTIVEMETHODSWHICHWASSUCCESSFULTOCONFIRMTHEVALIDITYOFBSSAPPLIEDTOSEPARATINGVIBRATIONSIGNAL4ABSSPACKAGEUSINGMATLABVCSOFTWARESWASDESIGNEDBASEDONTHETHEYOFSETTINGPARAMETERSTHISPACKAGEMADETHEOPERATIONOFBSSSIMULATIONSAPPLICATIONSCONVENIENTLYUNDERAGRAPHICALINTERFACESCONTROLKEYWDSBLINDSOURCESEPARATIONBSSVIBRATIONSIGNALCEFUNCTIONINDEPENDENTCOMPONENTANALYSISWITHREFERENCEICARBSSPACKAGE

簡(jiǎn)介：分類(lèi)號(hào)密級(jí)UDC編號(hào)專(zhuān)業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門(mén)強(qiáng)度等效模型研究碩士研究生劉祥指導(dǎo)教師陳東良副教授企業(yè)導(dǎo)師季寶鋒工程師工程領(lǐng)域機(jī)械工程論文主審人王茁教授哈爾濱工程大學(xué)2014年5月分類(lèi)號(hào)密級(jí)UDC編號(hào)專(zhuān)業(yè)碩士學(xué)位論文（工程碩士）航空用可快拆蜂窩夾層艙門(mén)強(qiáng)度等效模型研究碩士研究生碩士研究生劉祥指導(dǎo)教師指導(dǎo)教師陳東良副教授學(xué)位級(jí)別學(xué)位級(jí)別工程碩士工程領(lǐng)域工程領(lǐng)域機(jī)械工程所在單位所在單位機(jī)電工程學(xué)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(xué)位授予單位學(xué)位授予單位哈爾濱工程大學(xué)

簡(jiǎn)介：上海交通大學(xué)碩士學(xué)位論文航空發(fā)動(dòng)機(jī)變比熱容熱力計(jì)算和系統(tǒng)級(jí)仿真研究姓名韋福申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)航空宇航推進(jìn)理論與工程指導(dǎo)教師杜朝輝20060201上海交通大學(xué)碩士論文摘要II和組分燃?xì)獾膹?fù)雜函數(shù)其中壓力對(duì)比熱容的影響很小氣體經(jīng)過(guò)燃燒室和燃油混合燃燒后生成的燃?xì)庥啥喾N不同性質(zhì)的物質(zhì)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(huì)給計(jì)算帶來(lái)困難為了計(jì)算方便將系統(tǒng)的工質(zhì)分為空氣和純?nèi)細(xì)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(jìn)氣道壓氣機(jī)等可把其工質(zhì)看成燃?xì)鉃榱愕幕旌蠚怏w純空氣一般的比熱容是按照空氣和純?nèi)細(xì)獾谋葻崛莞鶕?jù)質(zhì)量分?jǐn)?shù)關(guān)系線性組合而成的然后對(duì)每一模塊建立變比熱容的數(shù)學(xué)計(jì)算模型同時(shí)以單軸渦輪噴氣式發(fā)動(dòng)機(jī)為算例進(jìn)行計(jì)算仿真跟用軟件GASTURB和定比熱計(jì)算的結(jié)果相比較證明變比熱的計(jì)算結(jié)果合理性和更接近物理實(shí)際以及有推廣應(yīng)用的價(jià)值最后利用已有的模塊庫(kù)對(duì)常見(jiàn)的發(fā)動(dòng)機(jī)系統(tǒng)比如渦輪噴氣渦輪軸渦輪螺漿渦輪風(fēng)扇等進(jìn)行系統(tǒng)建模仿真并對(duì)它們進(jìn)行設(shè)計(jì)點(diǎn)和非設(shè)計(jì)點(diǎn)的熱力計(jì)算非設(shè)計(jì)點(diǎn)仿真計(jì)算包括速度特性高度特性和節(jié)流特性的計(jì)算還有過(guò)渡工作狀態(tài)比如啟動(dòng)加速減速接通加力與斷開(kāi)加力等仿真從計(jì)算結(jié)果的分析和與GASTURB的計(jì)算相比較中可以看出利用MODELICADYMOLA進(jìn)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(guān)鍵詞航空發(fā)動(dòng)機(jī)模塊化建模變比熱容仿真DYMOLAMODELICA

簡(jiǎn)介：南京航空航天大學(xué)碩士學(xué)位論文XRF和顯微圖像技術(shù)在航空發(fā)動(dòng)機(jī)智能監(jiān)測(cè)中的綜合應(yīng)用姓名羅鋒申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)載運(yùn)工具運(yùn)用工程指導(dǎo)教師李艷軍20090101XRF和顯微圖像技術(shù)在航空發(fā)動(dòng)機(jī)智能監(jiān)測(cè)中的綜合應(yīng)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(jiǎn)介：哈爾濱工業(yè)大學(xué)碩士學(xué)位論文航天器軌道動(dòng)力學(xué)仿真技術(shù)研究姓名白紹竣申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)一般力學(xué)與力學(xué)基礎(chǔ)指導(dǎo)教師王日新20050601哈爾濱工業(yè)大學(xué)工學(xué)碩士學(xué)位論文ABSTRACTTHESPACECRAFTORBITISONEOFTHEMOSTIMPORTANTELEMENTSINTHEFLIGHTMISSIONS，ANDTHEDESIGNANDPROPAGATEOFSPACECRAFTORBITISAPIECEOFIMPORTANTANDCOMPLEXWORKTHUS，THESIMULATIONOFORBITDYNAMICSMAKESGREATSENSEINMILITARYTHISPAPERWHICHISRESEARCHONSPACECRAFTORBITDYNAMICSIMULATIONISANIMPORTANTANDELEMENTALPARTOFTHENATIONALHIGHTECH863703PLAN“THEPRIMARYSIMULATIONSYSTEMOFSPACEENVIRONMENTANDWEAPONS”INTHISTHESIS，THEORBITTHEORYOFSPACECRAFTISINTRODUCEDAHIGHPRECISIONMODELOFORBITDYNAMICSISBUILT，INWHICHTHEPERTURBATIONSDUETONONSPHERICALGRAVITATION，SUNLIGHTPRESSURE，ATMOSPHERICDRAGANDLUNISOLARGRAVITATIONAREINCLUDEDTHEPROPERTIESOFSUNSYNCHRONOUSORBIT，GEOSTATIONARYORBIT，GROUNDTRACEREPETITIONORBIT，MOLNIYAORBITARESTUDIEDANDTHEWAYSTODESIGNSUCHORBITSAREOFFEREDTHESOFTWAREMODULEDEVELOPEDINTHISTHESISSERVESFORMANYOTHERMODULESTHEEFFICIENCYOFTHISMODULEDIRECTLYAFFECTSTHEPERFORMANCEOFTHEWHOLESYSTEMTHENUMERICALHIGHPRECISIONORBITPREDICTIONALGORITHM，WHICHINCLUDESRUNGEKUTTAFEHLBERGADAPTIVESTEPINTEGRALALGORITHM，LEGENDREPOLYNOMIALSALGORITHM，TRIGONOMETRICFUNCTIONSERIESANDSOON，ISTHEMOSTCOMPLEXANDEXHAUSTING，THISPAPEROPTIMIZEDTHEALGORITHMSRELATINGTOORBITPREDICTIONTHECOMPUTATIONALCOMPLEXITYTHEORYWASADOPTEDTOANALYSISANDOPTIMIZETHEALGORITHMSINTHERESULT，THEEFFICIENCYOFTHEALGORITHMWASIMPROVEDALOTTHESIMULATIONSYSTEMOFSPACECRAFTORBITDYNAMICSBASEDONATLCOM，WHICHMAKESTHEPROGRAMMODULARANDREUSABLE，ISFINISHEDITOFFERSMANYFUNCTIONSSUCHAS，SPECIALORBITSDESIGN，COMMONORBITDESIGN，HIGHPRECISIONORBITPROPAGATING，LONGTERMORBITPREDICTION，SPACECRAFTATTITUDEKINEMATICANALYSIS，GROUNDTRACEREPORT，COVERAGEANALYSIS，COMMUNICATIONLINKANALYSISANDS0ONATLAST，INORDERTOTESTTHEFUNCTIONSOFTHESYSTEM，ATESTPLATFORMWASDEVELOPEDTHETESTRESULTSSHOWEDTHATTHESIMULATIONSYSTEMWASAHIGHPERFORMANCEPRODUCTII