簡介：中國民航大學碩士學位論文航空AES數(shù)字接收機關(guān)鍵技術(shù)的研究與實現(xiàn)姓名姚彬申請學位級別碩士專業(yè)通信與信息系統(tǒng)指導教師吳志軍20070308中國民航大學碩士論文ABSTRACTTHESOFTWAREDEFINEDRADIOTECHNIQUEISAKINDOFNEW1CADINCOMMUNICATIONTECHNIQUECAUSEDTHETECHNICALINNOVATIONOFRECEIVERBYMEANSOFTHESOFTWAREDEFINEDRADIOS，ITISBETTERTOMAKETHEA／D、D／ACLOSERTOTHEANTENNA，ANDPROCESSINGTHESIGNALINTHEDIGITALDOMAINANYCOMMUNICATIONFUNCTIONWILLBEPERFORMEDINTHESALNEHARDWAREPLATFORMTEALIZEDIFFERENTFUNCTIONBYCHOOSEDIFFERENTBLOCKOFSORWARESOFTWAREDEFINEDRADIOCALLCOMMUNICATEWITHTHESTATIONOFOLDSYSTEMBECAUSEITCANFORMALLKINDSOFMODULATEUNDEEANDPROTOCOL，THISCANPROLONGTHECYCLEOFTHESTATIONANDSOREDUCETHECOSTSOTHESOFTWAREDEFINEDRADIOHASABRIGHTFOREGROUNDINTHECOMMUNICATIONFIELD，ESPECIALLYINTHEMOBILECOMMUNICATIONFIELDDUETOTHELIMITATIONOFDEVICELEVEL，ITISIMPOSSIBLETOSAMPLERFSIGNALSOITISAVALIDWAYTOSAMPLEIFSIGNALTEALIZETHESOFTWAREDEFINEDRADIECEIVERTHIS燁RFIRSTDISCUSSTHECOMPOSINGOFAVIATIONSYSTEMICFORINMARSATANDCHANNELTYPES，ANDANALYZESPECIALTYTHEBASEFRAMEWORKANDTHEKEYTECHNIQUESOFTHESOFTWAREDEFINEDRADIOCOMBININGPCHANNELPROPTECHNICALGUIDELINESANDRESEARCHINGONTHEPRACTICALAPPLICATIONSINIFDIGITALRECEIVERTHISPAPERPUTFORWARDAKINDOFBROADBANDIFDIGITALRECEIVERDESIGNOFTHEAVIATIONAESWITHTHESOFTWAREDEFINEDRADIOTHESTUDYOFTHISPAPERPLACESEMPHASISTWOKEYTECHNIQUESTHEBLOCKOFSIGNALPROCESSINGINTHEIFANDTHESYNCHRONIZATIONOFCARRIERTHESIGNALPROCESSINGINTHEIFGIVESSPECIALDETAILSOFALGORITHMANALYSISANDREALIZESTECHNIQUESINADCANDDDC，ANDCARRIERSYNCHRONIZATIONANALYSETHESYNCHRONIZATIONALGORITHMOFCARRIERFREQUENCYANDPHASEANDGIVETHEIMPLEMENTATIONINFPGA，INCLUDINGSTRUCTUREDIVISIONHARDWAREDESIGNANDLOGICSYNTHESISKEYWORDSSOFTWAREDEFMEDRADIO；DIOTALIF；ANALOGTODIGITALCONVERTER；DIGITALDOWNCONVERTER；CARRIERRECOVER；FIELDPROGRAMMABLEGATEARRAYⅡ

簡介：西北工業(yè)大學碩士學位論文航空典型結(jié)構(gòu)材料腐蝕行為與控制的研究姓名田莉莉申請學位級別碩士專業(yè)材料學指導教師劉道新20060301懋熬王鼗太學鞭士學位論文擒要舞蔥黼度爵嚏疆離簸臺耢攀在櫥媲除段豹蔽瀑速率，壤大穩(wěn)霸啜灄零。夜35℃～70。|C試驗溫發(fā)范圍內(nèi)，復臺張料的吸瀑特性遵從FICK定攆。在3S℃澄淡下燕熱簿黥瓣禱滲夫了簸合耪旗在襁貽滁段戇蹶漫遵率巍飽積暇滋搴，并盈藤藤瀚耷趣載薅熬大，復合稀瓣奩鞠戇除袋鶼啜淹速率穗這戮平掇辯鶼讖秘蔽滋攀越丈。河瓣，暖澄健復合襯褥的承裁熊力翳囂降低。關(guān)鍵溺摟憋褰鑣，不臻鑲，裔強浚鑲，怒舞懿畿鑲，鍰會壘，簸紓雄壤溪環(huán)氟復合櫥黼，敷漫，娥鑲，磷豫L

簡介：中圖分類號理2窆UDC68L碩士學位論文學校代碼Q§三三密級公玨航空發(fā)動機導流葉片導流角的測量與分析MEASUREMENTANDANALYSISOFAEROENGINEGUIDEVANE’SDIVERSIONANGLE作者姓名丁梓健學科專業(yè)控制科學與工程研究方向智能檢測學院系、所信息科學與工程學院指導教師魯五一教授副指導教師論文答辯日期蘭絲蘭』勺答辯委員會主席齜中南大學二零一四年五月航空發(fā)動機導流葉片導流角的測量與分析摘要飛機在飛行過程中的座艙抖動現(xiàn)象一直以來都是航空領(lǐng)域中復雜且容易引發(fā)事故的問題。研究表明航空發(fā)動機導流葉片的一致性對發(fā)動機的性能會產(chǎn)生重要的影響，是導致飛機座艙抖動的主要原因之一。當前，航空發(fā)動機檢修工廠對葉片一致性檢測方法落后，都是使用尺寸規(guī)手工對葉片進行測量。手工測量的系統(tǒng)誤差很大、精度不高。這為飛機的安全飛行埋下了隱患。為了準確地對葉片的一致性進行檢測，本文提出一種導流角離線測量方案。本文詳細介紹了喘振產(chǎn)生的原因和預防措施，分析了葉片一致性對喘振的影響，提出了改進的導流角測量方法，并設計了自動化檢測裝置。導流角測量方法首先對通過葉片實物測量得到的數(shù)據(jù)進行降噪處理，以排除噪聲點對后續(xù)工作的干擾，然后采用弦高差法精簡了數(shù)據(jù)中的冗余點，以提高重構(gòu)工作的效率，在此基礎(chǔ)之上運用切片技術(shù)，即采用一組平行平面與葉片的三維數(shù)據(jù)相切，得到了一系列的葉片截面輪廓數(shù)據(jù)，將上下表面的數(shù)據(jù)分離后，重構(gòu)了葉片的截面輪廓曲線，最后通過計算得到導流葉片的導流角。本文以測量得到的導流角數(shù)據(jù)為依據(jù)，對測量結(jié)果進行了對比，分析了各組數(shù)據(jù)的平均值和方差，提出了同一個葉片和葉片間一致性的判定方法。分析結(jié)果表明葉片的導流角測量方法是可行的，可以有效地提高測量的精度，且可以多次測量，從而很好的解決偶然性誤差對測量結(jié)果的影響，在理論研究的基礎(chǔ)上，開發(fā)了檢測系統(tǒng)軟件，最后在總結(jié)全文工作的基礎(chǔ)上，指出了有待進一步完成的工作。圖40幅，表19個，參考文獻50篇。關(guān)鍵詞喘振；導流葉片；導流角；曲線重構(gòu)；分類號TP29

簡介：號密級公玨學號絲SQ3Q212P鏟IZ7口?！恢袊裼煤娇諏W院碩士學位論文機器視覺在航空發(fā)動機內(nèi)窺檢測中的應用研究研究生姓名工煎薟導師姓名翌云掛教援申請學位級別王堂亟所在院系扭童堂喧學科專業(yè)名稱昱熊劍昱皇撞割論文答辯日期2QQ生旦坦目2005年1月10曰中國民用航空學院碩L學位論文ABSTRACTINRECENTYEARS，COMPUTERVISIONTECHNOLOGYHASBEENGREATDEVELOPEDANDITALSOHASBEENANIMPORTANTRESEARCHSUBJECT。BYNOW，THETECHNIQUEOFHOLEDETECTIONISMATUREINIMAGECAPTURE，IMAGESHOW，ETCBUTHOLEDETECTIONDEVICEISFARFROMREACHINGTHEINTELLEGENTLEVEL，THEDETECTIONOFAVIATIONENGINEISBASELYBYHUMANEXPERIENCES，THEFAULTWASESTIMATEDSOTHEHUMANFACTORANDFAULTOFDETECTIONHAPPENED，ANDPEOPLECANNOTDOFAULTPREDICTION。THISSUBJECTISBASEDONTWINEYEVISIONPRICIPLE，ANDITWILLUSEIMAGEPROCESSINGTECHNIQUE，ANDGIVEGOODPARAMETERFSUCHASLENGTHOFCRACKLE，AREAOFERODE，SOITCANDOQUANTITIVEMEASUREMENT，ANDITALSOISTHEBASEWORKOFDEVELOPINGINTELLEGENTHOLEDETECTIONDEVICESOASTEALIZEINTELLIGENTOFFAULTDETECTIONTHISARTICLEWILLBUILDATWINEYECOMPUTERVISIONMODELOFPARALLELOPTICALAXIS，WEWILLADOPTAFLEXIBLEMETHODINCAMERACALIBREAIONWETESTTHEPRECISIONOFTHECALIBRATIONRESULTTHEINFLUENCEOFTHENOISEISDISPELLEDBYIMAGEPREDICTIONPROCESSING，EFFECTIVEAREAISENHANCEDWEALSOWI玨ANALIZEMEANFILTERANDMEDIANFILTER，ANDCOMPAREDIFFERENTIALOPERATOROFFRINGEDRAWINGTHEEFFECTIVEAREAISEXTRACED，THEAREAOFDAMAGEANDTHE3DCOORDINATESCANBECOMPUTEDBYSTEREOMATCH強EWHOLESYSTEMCALLBEDIVIDEINTOFOURPARTSIMAGECAPTURING。IMAGEPROCESSING，STEREOMATCHING，AND3DREBUILDINGTHISSUBJECTUSEDVEPROGRAMMINGLANGUAGETODEVELOPTHEMODULESATTHEENDOFTHISARTICLEWEINTRODUCEDTHESYSTEMPROGRAMMINGANDFUNCTIONS弱ERESEARCHOFTHESUBJECTCANDOSOMEGOODTHINGSTOIMPROVETHEHOLEDETECTIONTECHNIQUEANDTHEMODEMIZATIONOFCIVILAVIATIONKEYWORDSAVIATIONENGINEHOLEDETECTIONIMAGEPROCESSINGCOMPUTERVISIONL

簡介：南京航空航天大學碩士學位論文民用航空維修工程能力評估及輔助決策支持系統(tǒng)開發(fā)研究姓名王敬敏申請學位級別碩士專業(yè)交通信息工程及控制指導教師王華偉20090201民用航空維修工程能力評估及輔助決策支持系統(tǒng)開發(fā)研究IIABSTRACTTHEMAINTENANCEISTHEFOUNDATIONOFENSURINGTHEINHERENTRELIABILITYSAFEFLIGHTOFTHEAIRCRAFTWITHTHEEXPINGOFTHECIVILAVIATIONAIRCRAFTTHEAGGRAVATIONOFAGINGAIRPLANESTHEDEMINTHEAIRCRAFT’SMAINTENANCEMARKETISLARGERLARGERTHEMAINTENANCEENGINEERINGABILITYISTHEABILITYTOCOMPLETETHEREPAIRTASKOFTHEAIRCRAFTWHICHHAVESIGNIFICANTMEANINGINENSURINGTHESAFEFLIGHTOFTHEAIRCRAFTALONGWITHTHEADVANCEOFTHECOMMERCIALAVIATIONTHEGLOBALCOMPETITIONOFTHEMAINTENANCEINDUSTRYISPROGRESSINGFASTERITISNECESSARYTOMAKESATHOUGHFULLRANGEOFEVALUATIONOFTHEDEVELOPMENTLEVELOFTHECURRENTCIVILMAINTENANCEINDUSTRYTHISEVALUATIONNOTONLYPROVIDESTHEDATASUPPTFTHEGOVERNMENTTOMAKEMACROSCOPICPOLICYBUTALSOPROVIDESTHEBASISFTHEDOMESTICMAINTENANCEENTERPRISESTOMAKEDEVELOPMENTPLANSTHEPAPERPRESENTSTHERESEARCHOFCIVILAVIATIONMAINTENANCEENGINEERINGCAPABILITYEVALUATIONTHEPRIMARYWKINCLUDES1THECONSTRUCTIONOFEVALUABLETARGETSYSTEMFCIVILAVIATIONMAINTENANCEENGINEERINGCAPABILITYHASBEENESTABLISHEDBASEDONTHECONSTRUCTIONPRINCIPLEOFTHEINDICATSYSTEMCONSIDEREDFROMTHEHUMANRESOURCESTHESUBSTANCERESOURCESTHEINFMATIONTECHNOLOGYRESOURCESTHEMANAGEMENTRESOURCESASWELLASTHEMAINTENANCECATEGYTHISPAPERHASFMULATEDTHETARGETEVALUATIONCRITERIAWHICHLAIDTHEFOUNDATIONFADEEPERRESEARCHINTHEFUTURE2THEDATACLEANINGTECHNOLOGYPREPROCESSINGTECHNIQUESHASBEENSTUDIEDTHEQUALITYOFDATAUNIFICATIONOFTARGETINFLUENCETHERESULTRELIABILITYOFEVALUATIONBUTTHEDATACLEANINGTECHNOLOGYPREPROCESSINGTECHNIQUESGUARANTEEIT3THEGRACOMPREHENSIVEEVALUATIONMODELCOMBININGAHPDSEVIDENCETHEYWASCONSTRUCTEDCONSIDERINGTHEIMPACTOFTARGETWEIGHTONEVALUATIONTHEDSEVIDENCETHEYHELPEDTODEPRESSTHEUNCERTAINTYOFTHETARGETWEIGHTBASEDONAHPAFTERWARDSTHEGREYRELATIONALCOMPREHENSIVEEVALUATIONMETHODWASUSEDTOCLEARTHEDIFFERENCESBETWEENTHEEVALUATIONOBJECTTHEREFERENCEOBJECTASWELLASROOMNEEDTOBEIMPROVED4ESTABLISHEDEVALUATIONSYSTEMOFMAINTENANCEMANAGEMENTWITHACEOFMAINTENANCEENGINEERINGCAPABILITYEVALUATIONTHEEXAMPLESHOWEDTHECOMPREHENSIVEEVALUATIONMODELISEFFECTIVEBASEDONTHEBSSTRUCTURETHISSYSTEMCREATEDTARGETSYSTEMDYNAMICREFLECTEDTHECONDITIONITSELFINTIMETHESYSTEMCANBEEXPEDTOOTHEREVALUATIONFIELDKEYWDMAINTENANCEENGINEERINGCAPABILITYDATACLEANINGTECHNOLOGYANALYTICHIERARCHYPROCESSDSEVIDENCETHEYGREYRELATIONALANALYSISEVALUATIONSYSTEM

簡介：西北工業(yè)大學碩士學位論文學位研究生題目基于神經(jīng)網(wǎng)絡的航空發(fā)動機控制研究作者學科專業(yè)指導老師榮立燁控制理論與控制工程李華聰二OO七年三月西安西北工業(yè)大學碩士學位論文ABSN‘ACTABSTRACTAEROEN百艙W貓ACON仕OUEDOBJCCT晰血如CHFBA士ILRES嬲COMPLICATEDWDRKINGCONDMONFORSUCHCONTROUEDOBJECT，CL嬲SICALFEEDBACKCON仃0L恤ORY鋤DOPTIMALCONTML也EORYCAN’911AR卸艙EOPTIMALP曲MLANCEMTHISPAP％ANEWTYPEOFMETLLOD山EPIDCOMR01B越EDON玳憂面璀TWORKISSTIL‘LIEDNISUSEDIN也EAEROENGINE由咖∞IEMCONTR01THEWORKOF也ISTHESISIS硒FOLLOW8MYWE托P托S眥DIN1LLISMESISONEISA刪LLTIVARIABLEDECOUPLINGPDCON缸OLSYS渤1B舔CDOND孫INDIAGONAL把叫姍TN吼砌NE咖RK，趾D位OTHCRISAMLLHIV耐ABLEDECOUPLIILGPMCON怕LSYSCEMBA∞D(zhuǎn)ONQDI心4NQU弱I碰AGONALR∞U玎C斌∞URALNETVVOFKN啪SDESI弘EDFOR姍CNGINEC徹血OLBYSTIIDYINGDRNN／QDRNN躚DGMDGRADICNTDCC饑TME也ODNW鵲IUUS仃ATED恤咖C嘶OF也CCON扛0U盯ANDTHC也EORYOF也EALGO舳M11LE螂UNOFCOMPUTCRSINNDATIONS110WS恤TA刪右VARIABLEDECOUPLINGPIDCON血DLSYSTEMB舔ED∞D(zhuǎn)RNNH勰缸PE面衄ANCEOFDCCOUPLINGC印ABIL毋；0N吐屺OMERHAND，QDRNN，W11ICHB翹EDOND鼢小，H硒BETTERPE面M齜EOFDECOUPLINGCAPABIL姆TH躚DI心LN、L，ITHA1∞SIMPLCS岫LCTILREESPECIALLY，ALL廿AJDINGAIGORITHMOFD鼢礬MAYBELNILIZEDINQDRNN伽LYBY1IME懈FOMATIORLKEYWORDS搬OSPACEPR叩ILLSIONNEURALN釀ⅣORK；QUASIDIAGONALRCCU玎EMDECOUPLINGCON咖LSYSTEM；AEROEN舀NE；DIAGONALRCCU玎ENTNEI|RALN時WORK；MUMVARIABLECMLTROL；ⅡI

簡介：電子科技大學UNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINA碩士學位論文MASTERTHESIS論文題目基于性能退化數(shù)據(jù)的航空發(fā)動機剩余壽命預測學科專業(yè)機械工程學號201321080153作者姓名劉帥君指導教師陳中柘副教授REMAININGUSEFULLIFEPREDICTIONOFAEROENGINEBASEDONPERFMANCEDEGRADATIONDATAAMASTERTHESISSUBMITTEDTOUNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINAMAJMASTEROFENGINEERINGAUTHLIUSHUAIJUNADVISASSOCIATEPROFCHENZHONGZHESCHOOLSCHOOLOFMECHATRONICSENGINEERING

簡介：中圖分類號U4641論文編號102870214S104學科分類號080204碩士學位論文航空活塞發(fā)動機控制器實物在回路仿真系統(tǒng)設計研究生姓名邊文超學科、專業(yè)航空宇航推進理論與工程研究方向系統(tǒng)控制與仿真指導教師于兵南京航空航天大學研究生院能源與動力學院二О一三年十二月NANJINGUNIVERSITYOFAERONAUTICSASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFENERGYPOWERENGINEERINGRESEARCHONHARDWAREINLOOPSIMULATIONSYSTEMOFCONTROLLERFANAVIATIONPISTONENGINEATHESISINAEROSPACEPROPULSIONTHEYENGINEERINGBYBIANWENCHAOADVISEDBYLECTURERYUBINGSUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFTHEDEGREEOFMASTEROFENGINEERINGDECEMBER2013

簡介：復旦大學博士后學位論文航空發(fā)動機轉(zhuǎn)靜子碰摩故障研究多剛體動力學仿真軟件研發(fā)姓名楊積東申請學位級別博士后專業(yè)工程力學指導教師鄭鐵生20040101ABSTRACTTHEREPORTCONSISTSOFTWOPARTS，ONETALKSABOUTTHERESEARCHINTUBPRONEMSOFAEROENGINEWHICHBELONGSTOTHEFIELDOFROTORDYNAMIESANDNONLINEARDY，NAMICS；THEOTHERISTHEDEVELOPMENTWORKOFMULTIRIGIDBODYDYNAMICSSIMULATIONSOFTWAREINTHEFIELDOFMECHANISMANDCOMPUTERSIMULATIONSYSTEMIRESEARCHOILRUBPROBLEMOFROTORSYSTEMINAEROENGINETHEMBPROBLEMOFROTORSYSTEMINAEROENGINEISTHEKEYTECHNOLOGYWHICHRESTRICTITSDEVELOPMENTTOHIGHERSPEED，MASSLESS，BIGGERPOWERANDHEAVYLOADINTHISPAPER，THERUBPROBLEMOFROTORCASESYSTEMISDEEPLYSTUDIED，ANDTHERESULTNOTONLYHASTHEORETICALSIGNIFICANCEBUTCARLPROVIDETECHNICALGUIDEFORTHEDESIGNDEPARTMENTSEVERALNONLINEARRUBFORCEMODELSMOSTINUSEAREANALYZEDANDEXPLAINEDTOAPPROACHINNATECHARACTERANDINTERRELATIONOFTHOSEMODALSTHEBESTRUBFOROEMODELISDETERMINEDBYUSINGNUMERICALSIMULATIONANALYSISANDCOMPARINGTHEINFLUENCEOFDIFFERENTRUBFORCEMODELSONTHERESPONSEWITLLTHESALILESYSTEMPARAMETERTHEANNULARRUBSOLUTIONOFJEFFCOTTROTORSYSTEMISANALYZEDINTHEORYTHESOLUTION’SEXISTINGCONDITIONASWELLASITSEVOLUTIONRULEASSRESULTOFTHECHANGEOFPARAMETERISPROBEDTHEVALIDITYOFTHERESEARCHISPROVEDBYWAYOFNUMERICALSIMULATIONTHESAMEMETHODISUSEDTOSHOWANDEXPLORETHENONLINEARMOVEMENTOFRUBROTORUNDERTHENORMALCONDITIONWHICHESTABLISHATHEORETICALFOUNDATIONFORMULTIFREEDOMROTORSYSTEMRESEARCH，THESOLUTIONOFRUBPROBLEMINTHEMULTIFREEDOMROTORSYSTEM，WHICHISSUITABLEFORPRACTICALENGINEERING，ISDESIGNED，ASOFTWAREPACKAGEONTHESTUDYISCOMPLETEDTOSERVETHEREALROTORSYSTEMDESIGNIIRESEARCHONMULTIRIGIDBODYSYSTEMDYNAMICSSIMULATIONSOFTWAREPACKAGEMULTIRIGIDBODYSYSTEMSIMULATIONISTHECOREOFVIRTUALSIMULATIONOFMECHANISMVIRTUALPROTOTYPINGTECHNOLOGYDEVELOPEDONTHEBASISOFMULTIRIGID_BODYSYSTEMSIMULATIONANDPAIDATTENTIONSBYTHEENGINEERINGFIELDMUSTBEBYTHEAIDOFEMULATORWITHFRIENDLYSCOPE，COMPLETEFUNCTIONSANDSTABLEPERFORMANCETHENUMERICALMODELOFMECHANISMSYSTEMMUSTBEESTABLISHEDTOMEETTHENEEDSOFCOMPUTERSTYLIZATIONBECAUSEITISTHEPRECONDITIONOFTHEDEVELOPMENTOFEMULATORACCORDINGTOTHECHARACTERISTICOFTHENUMERICALMODEL，ALLEFFECTIVEALGORITHMWITHHIGHEFFICIENCY，STABILITYANDHIGHACCURACYDEALINGISPROVIDEDTOFINDTHEKINETICSANDDYNAMICSRESPONSEINPUTANDOUTPUTWAYOFCADSYSTEMWITHFRIENDLYSCOPEANDHIGHDEGREEAUTOMATINGABILITYISOFFEREDBYUSINGCOMPUTERVISUALIZEDTECHNOLOGYANDANIMATEDTECHNOLOGYTOMAKEENGINEERSDEVOTEDTHEMSELVESTOCREATIVEDESIGNOFMECHANISMSYSTEMSKEYWORDSAEROENGINE，ROTOR，RUB，NONLINEAR，MULTIRIGIDRBODY，SIMULATION

簡介：西北工業(yè)大學碩士學位論文航空電子系統(tǒng)中的光纖通道技術(shù)研究姓名張偉申請學位級別碩士專業(yè)系統(tǒng)工程指導教師吳勇20060301西北工業(yè)大學碩士學位論文ABS舡毽CLABSTRACTWITLLTHERAPIDDEVELOPMENTOFMODEMSEMICONDUCTORRADARANDNETWORKTECHNOLOGYMILITARYAVIONICSSYSTEMHASENTEREDTOANEWEPOCHTHENEWAVIONICSCONTAINHIGLLDATARATESELLSORS，PARALLELPROCESSORSANDSHAREDMEMORYWJTLLHIGHLEVELSOFINTEGRATIONMILSTD1553BSERVEASSTANDARDOFDATACOMMUNICATIONSINMANYMILITARYENVIRONMENTSCALLNOTSATISFYTHENEEDSOFMODEMSYSTEM，OTHERWISETOSTIPULATEFORANEWSTANDARDCAUSEHI曲COST，LONGPERIODANDSINGLEDUSEDTHESOLUTIONISTOFINDACOMMERCIALOFFTHESHELFTECHNOLOGYANDDONECESSARYMODIFICATIONTOADAPTTOAVIONICSENVIRONMENTAFTERCOMPAREMULTITUDINOUSHI曲SPEEDNETWORKTECHNOLOGYTHATWIDELYBSEINCOMMERCIAL，THISTHESISCHOOSESTHEFIBRECHANNELWHICHISTHEFORCEFULCANDIDATEOFTHENEXTGENERATIONAVIONICSCOMMUNICATIONNETWORKSTANDARDASTHERESEARCHTARGETFIRSTLYANALYZESTHEREQUIREMENTSOFNEXTGENERATIONAVIONICSANDTHEADVANTAGEOFTHEFIBRECHANNEL，THOROUGHLYSTUDYFCFS，F(xiàn)CPH，F(xiàn)CALANDFCAEINTRODUCETHEPROTOCOLMODELTOPOLOGYSTRUCTUREANDSERVICECLASSOFTHEFIBRECHANNELEMPHASISONTHEPROCESSOFFIBRECHANNELARBITRATEDLOOPNETWORKBASEONALLABOVEWORKANDCOMBININGWITHTHESTRUCTUREOFNEXTGENERATIONAVIONICSACOMPUTERSIMULATIONMODELWASDEVELOPEDTHEOPNETMODELERTOOLFROM0PNET’INCWASUSEDTOMODELTHECOMPONENTSOFANADVANCEDAVIONICSSYSTEM，ALSOTHETHESISEVALUATESTHEMODELONSUPPOSEDATASTREAMTOEDUCETHETHROUGHPUT，LATENCYANDETOECREDITTHERESULTSOFTHESIMULATIONDEMONSTRATEDTHATFIBRECHANNELMEETSALLTHEPERFORMANCEREQUIREMENTSOFANAVIONICSJNTERCORMECTKEYWORDSAVIONICSSYSTEMCOMMUNICATIONNETWORKFIBRECHANNELARBITRATEDLOOPNETWORKEVALUATELL

簡介：西北工業(yè)大學碩士學位論文新型航空直線直流電動機驅(qū)動控制系統(tǒng)研究姓名巫春玲申請學位級別碩士專業(yè)電力電子與電力傳動指導教師馬瑞卿20040301西北工業(yè)大學碩士論文ABSTRACTTHETHESISROOTSINTHEITEMSUPPORTEDBY“FIFTEEN“AVIATIONFUNDS,NEWTYPEAERONAUTICLINEARDCMOTORLDCM,STUDYITSCLASSES,CHARACTERISTICSANDWORKPRINCIPLE,MAINLYRESEARCHESTHEDRIVEANDCONTROLTECHNIQUEOFAERONAUTICLINEARDCSTEPMOTORLDCSMUSINGINEMERGENCYDISCHARGINGOILVALVEONAIRPLANETHEPAPERDISCUSSESTHEWORKPRINCINPLEOFLDCSM,ADOPTSSINGLECHIPASCORECONTROLCELL,PUTSFORWARDTWOKINDSOFCONTROLSCHEMES,ANALYZESANDSTUDYTHETECHNIQUESCHEME,HARDWAREANDSOFTWAREDESIGNOFEACHCONTROLSYSTEMSEPARATELYINDETAIL,ONTHEBASISOFTHECENTRALIZEDWINDINGELECTRIFYINGTRAITANDPULSESTEPPINGCONTROLMETHODOFTWOPHASE飾BRIDLINEARDCSTEPMOTORHDCLSMACCORDINGTOTHESYSTEMTECHNOLOGYREQUIRE,ADOPTINGSINGLECHIPREALIZEOPENLOOPDIGITALCONTROLOFHDCLSMUSINGV/FCONVERSIONANDCOMPLEXKEYCONTROLMETHODREALIZEDIGITALSETTINGOFSYSTEMPARAMETER,SUCHASVELOCITYUSINGMICROSTEPPINGCONTROLINSURETHEMOTORRUNNINGMORESMOOTHLYADOPTINGDEBASINGSPEEDCONTROLMETHODTOELIMINATETHEMECHANICALIMPACTOFDISTANCETERMINATIONEFECTIVELYATTHESAMETIME,ANALYZINGMAINPOWERCIRCUIT,DRIVECIRCUITANDPROTECTCIRCUITOFSYSTEM,COMPLETINGHARDWAREDESIGNANDFACTUREANDSOFTWAREPROGRAMMINGANDDEBUGGINGATLAST,MAKINGAWHOLETESTINHYBRIDROTARYSTEPMOTORTHEEXPERIMENTRESULTINDICATESTHATTHISCONTROLSYSTEMREACHESTHEQUALITIESREQUIREDANDRUNSMOOTHLYALSOMOREOVER,THEAERONAUTICLINEARDCMOTORCONTROLSYSTEMNOTONLYCANINSTEADTHEDRIVEMOTOROFEMERGENCYDISCHARGINGOILVALVE,BUTALSOCANBEUSEDINSOMELOWPOWERELECTROMOTIONMACHINEMAKINGLINEARLOCOMOTIONTHEMOTOROWNSEXTENSIVEAPPLICATIONFOREGROUNDPREFERABLYKEYWORDSLINEARDCMOTORLDCM,HYBRIDLINEARDCSTEPPINGMOTORFILDCSM,SINGLECHIP,SUBALLOCATIONCONTROL,EMERGENCYDISCHARGINGOILVALVE

簡介：碩士學位論文碩士學位論文航空發(fā)動機盤鼓式轉(zhuǎn)子振動引起的疲勞問題研究INVESTIGATIONONFATIGUEPROBLEMCAUSEDBYVIBRATIONOFAEROENGINEDRUMROTOR董延陽董延陽哈爾濱工業(yè)大學哈爾濱工業(yè)大學2015年6月CLASSIFIEDINDEXV21552UDC6211DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGINVESTIGATIONONFATIGUEPROBLEMCAUSEDBYVIBRATIONOFAEROENGINEDRUMROTORCANDIDATEDONGYANYANGSUPERVISORPROFLIUZHANSHENGACADEMICDEGREEAPPLIEDFORMASTEROFENGINEERINGSPECIALITYPOWERMACHINERYANDENGINEERINGAFFILIATIONENERGYSCIENCEANDENGINEERINGDATEOFDEFENCEJUNE,2015DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：基于機器視覺的航空儀表自動識別研究作者李澤本指導教師王長元教授申請學位學科計算機應用技術(shù)西安工業(yè)大學2006年3月AEROINDICATORIMAGEAUTOIDENTIFYRESEARCHBASE0NMACHINEVERSIONDISCIPLINECOMPUTERAPPLICATIONTECHNIQUESTU岫吲鯽TURE孝F幸辱SUPERVISORSIG岫TU掀多4；U，YABSTRACTWITHTHERAPIDDEVELOPMENTOFCOMPUTERTECHNOLOGYRECENTLYTHECOMPUTERVISUALTECHNOLOGYISWIDELYUSEDINTHEFIELDSOFINDUSTRIALAUTOMATIONINDUSTRIALONLINETEST，PRECISIONMEASUREMENTANDETCASONEOFTHEINSTRUMENTSTHEAVIATIONGAUGEWITHPOINTERISVERYFREQUENTLYUSEDINTHEAVIATIONINDUSTRYATPRESENTTRADITIONALLYHUMANEYESJUDGETHERESULTOFAVIATIONGAUGEHOWEVERSOMEOFTHESUBJECTIVEFACTORSSUCHASDIFFERENTOBSERVATIONANGLE，DIFFERENTOBSERVATIONDISTANCEANDPERSON’SFATIGUENESSMAYHAVEEFFECTONTHEVALUES，WHICHNOTONLYRESULTSINERRORLOWRELIABILITYBUTALSOLOWEFFICIENCYANDHIGHCOSTOFLABORITANALYZEDTHEPARAMETEROFGEOMETRYFEATUREOFTHEAVIATIONGAUGEWITHPOINTERANDALSOANALYZEDTHECOMPLEXITYANDANTIINTERFERENCEOFCALCULATIONBYHOUGHTRANSL8TIONARITHMETICINTHEPROCESSOFGETTINGPARAMETEROFTHEAVIATIONGAUGETHENFROMTHISCONCLUSION，ITPUTFORWARDSOMEOPTIMALSUGGESTIONSANDIMPROVEMENTFROMTHECOMPLEXITYOFTIMEANDSPACETHEOBJECTORIENTEDPROGRAMDESIGNINGIDEAISADOPTEDINTHEAVIATIONGAUGEVISUALTESTSYSTEMSOFTWAREDESIGNATTHESAMETIMEONTHEPLATFORMOFVISUALC60，AVIATIONGAUGE、ⅣIMPOINTERISDEVELOPEDAFTERMANYEXPERIMENTS，ITISIMPROVEDTHATTHISSYSTEMISREALLYFEASIBLEINTHEAUTOMATICRECOGNITIONOFTHEGAUGEANDWHICHHASPROVEDTHATTHEAUTOMATICRECOGNITIONCANREALIZEFROMBOTHINTHEORYANDINPRACTICEINAWORDTHESTUDYOFAUTOMATICRECOGNITIONOFTHEAVIATIONGAUGEBYTHEWAYOFCOMPUTERVISUALTESTTECHNOLOGYISATOTALLYNEWMETHODATTHESAMETIME，THISRESEARCHHASPROMOTEDTHEAPPLICATIONOFCOMPUTERVISUALTESTTECHNOLOGYINTHEFIELDOFPRECISIONMEASUREMENTKEYWORDSIMAGEPROCESSING；AVIATIONGAUGEWITHPOINTER；HOU曲TRANSLATIONCOMPUTERVISIONTECHNOLOGY；AUTOMATICRECOGNITION；

簡介：分類號LDCR8／坫涉中國民用航空學院碩士學位論文航空發(fā)動機轉(zhuǎn)子實驗臺振動測試分析及軟件實現(xiàn)研究生姓名導師姓名申請學位級別一玉蘭亟～爨在陵系題叁堂醚趔筮主奎盤塑夔攮學科專業(yè)名稱藍窒生筮撞迸理詮當正攫論文答辯曩期9么篷羔塑叢塞。204年12月20疑中國民掰航宅學院頸L6學位論文ABSTLACLNOWADAYS，THEOLDMAILLTENANCEMODEWHICHMAINTAINSAEROENGINESACCORDINGTOTHEHATIMEIS∞MINGTO也EEND南RLTSEXTR∞F擊撒皤LOSSBOTH強ECO磚Ⅸ鞋YAND￡I糯E，MEANWHILE，ANEWIYDEVELOPEDMAINTENANCEMODEHASBEENIMPLEMENT。DONAEROENGINES，WHICHBF；NG稻FWARDST殛T礅EAEFOEN番玨ESSHO玨LDBEMA主NT8L矬EDACCO磁法G協(xié)主TS豫ALCIRCUMSTANCESOITISIMPORTANTTOTAKET11EMEASUREOFREALTIMEVIBRATIONFORANALYZINGANDDIAG攤OSINGTK強ULTS西AEF。一E矬GNETHES雒ING一顰OF譙E撼奄電掛GINE∞溆重EST南EDOFO醢FINSTITUTEISTESPONDTHISTHINKINGWITHTHERAPIDLYDEVELOPMENTOFCONLPUTERANDSONWARE靶EHNIQUEV南精TIONM￡ASURINGA狂DA凇LYZINGFAULTSWI搬VI豫豫LINSLRUME娥HASBECOMET＆DEVELOPMENTTRENDOFVIHRATIONTESTFIELD弱THE也ESISDEVELOP、INUALINS拄UMENTSOFMULTICH勰NELV遜『AIONMEASURERNENTANDANAIYSISSYSTEMBASEDONPCASHARDWAREWORKBENCH，LABORATORYVIRTUALINSTRUMENTWORKBELKHLABVIEWDEVELOPEDBYAMERICANATIONALINSTN塒ENTSCO王PORATIONASDEVEIOPMENTSOFTWARE，ESSENTIALSENSOR’SIGNA】CONDITIONERANDDATAACQUISITIONCARDT瓢ESYSTEMCALLCONTROIDATAACQUISITION，PROCESSINGANDDISPLAYMCOMPUTEKTOMEET毫HEDEMANDOFVBRATIONMEASUREMENTANDANALYSISFIRSTSIMPLEINTRODUCTIONONVIRTUALINSTRUMENTSISMADEINMYTHES矗SECOND，THECOMPOSITIONOFVIBRALIONMEASUREMENTSYSTEMANDTHETHEORYOFVIBRATIORLSIGNALANALYSISAFOANALYZEDFINALLYIEXPLAINTHEGENERALPROGRAMOFDESIGNINGANDREALIZATIONTHISSYSTEM，ANDUTMZEROTORLABORATO“TESTBEDTOSIMULATEMECHANICALT∞UBLE協(xié)EST岱ISSO佼、張RENOTONLYCANTHESYSTEMDATAACQUISITIONDISPIAYANDANALYSISTOTHEVARIOUSKINDSOFSIGNALS，BUTITCANSAVEA醚瓣艇THEDAT鑫WHIE圭鞭VEDBEFORO秘佗SO佼W雒ESYSE糙S魏OULDINEL疆DE毛量LESEFHNCTIONDIGITAL矗LTER’WINDOWIN島AUTOCORRELATIONFUNCTIONANDCROSSCORRELATION脅CTION，輔TOPO敝FSPEC鐫M，E糟SSPOW。R警EET純M，E印S鼬建黻鑫LYSISBAS舞。鞋珂F鑫鰱FO濺材1YANSFENKEYWORDSVIRTUAIINSFRUMENTS；VIBRATIONTEST；AEROENGINE；ROTORTESTBED

簡介：娜介次掌碩士學位論文寥論文題目航空發(fā)動機機匣包容性的試驗研究與負真讓算作者姓名指導教師學科專業(yè)所在學院提交日期浙江大學碩士學位論文摘要本文主要研究航空發(fā)動機機匣對斷裂葉片的包容性問題。在年實驗基礎(chǔ)上，本文又對四組不同尺寸單平板葉片和機匣的高速撞擊模型進行了實驗研究，得到四組實驗結(jié)果。在四組實驗中，葉片均被機匣成功包容。葉片在機匣上撞擊出不同數(shù)目、深淺的凹坑。對于較高轉(zhuǎn)速下飛斷的長葉片，機匣上形成的第二個凹坑最深，葉片也卷曲厲害而對于低速下飛斷或者較短葉片，則一般會發(fā)生三次撞擊，其中第一個凹坑最深，而葉片則沒有很大的變形。葉片變形對撞擊過程中機匣的受力情況影響很大。結(jié)合年和年的實驗研究數(shù)據(jù)，選取其中的四組，利用軟件建立計算模型，對實驗過程進行仿真模擬。計算結(jié)果和實驗結(jié)果有較好的吻合，真實再現(xiàn)了葉片撞擊機匣的過程，成功的預測了機匣的包容能力，驗證了可使用仿真計算進行包容能力校核或設計新型包容結(jié)構(gòu)。根據(jù)結(jié)構(gòu)塑性動力學響應分析和葉片變形過程分析，指出葉片卷曲的形狀對凹坑的分布起到?jīng)Q定性作用，并對影響葉片卷曲形狀的飛斷轉(zhuǎn)速、抗彎剛度等參數(shù)進行了考察。根據(jù)撞擊過程中能量的分配與吸收，將撞擊過程分解為幾個階段，進一步弄清了葉片高速撞擊機匣的機理。本文建立的計算模型適用于不同材料、不同轉(zhuǎn)速、不同結(jié)構(gòu)的包容性問題，為進行機匣包容性研究提供了新方法，降低了實驗費用和研發(fā)周期，對發(fā)動機機匣結(jié)構(gòu)的改進研究有一定的實際意義。關(guān)鍵詞航空發(fā)動機包容性葉片塑性動力學數(shù)值仿真