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簡(jiǎn)介:西北工業(yè)大學(xué)碩士學(xué)位論文學(xué)位研究生題目基于神經(jīng)網(wǎng)絡(luò)的航空發(fā)動(dòng)機(jī)控制研究作者學(xué)科專業(yè)指導(dǎo)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(xué)碩士學(xué)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C(jī)NGINEC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U(xiǎn)NOFCOMPUTCRSINNDATIONS110WS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B(niǎo)ETTERPE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(shí)WORK;MUMVARIABLECMLTROL;ⅡI
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簡(jiǎn)介:上海交通大學(xué)碩士學(xué)位論文基于CAN總線的航天器用電源充電控制系統(tǒng)姓名羅勇進(jìn)申請(qǐng)學(xué)位級(jí)別碩士專業(yè)控制理論與控制工程指導(dǎo)教師路林吉20040201碩士學(xué)位論文4從而本系統(tǒng)實(shí)現(xiàn)了鉛蓄電池的智能充電管理并可在上位機(jī)在線了解鉛蓄電池的剩余電量多少充電運(yùn)行狀況并可在上位機(jī)實(shí)現(xiàn)隨時(shí)設(shè)置參數(shù)改變鉛蓄電池的充電策略等并同時(shí)可由下位機(jī)提供給上位主控機(jī)各種參數(shù)以生成直觀的系統(tǒng)運(yùn)行圖表關(guān)鍵詞蓄電池單片機(jī)CAN總線充電
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簡(jiǎn)介:電子科技大學(xué)UNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINA碩士學(xué)位論文MASTERTHESIS論文題目基于性能退化數(shù)據(jù)的航空發(fā)動(dòng)機(jī)剩余壽命預(yù)測(cè)學(xué)科專業(yè)機(jī)械工程學(xué)號(hào)201321080153作者姓名劉帥君指導(dǎo)教師陳中柘副教授REMAININGUSEFULLIFEPREDICTIONOFAEROENGINEBASEDONPERFMANCEDEGRADATIONDATAAMASTERTHESISSUBMITTEDTOUNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINAMAJMASTEROFENGINEERINGAUTHLIUSHUAIJUNADVISASSOCIATEPROFCHENZHONGZHESCHOOLSCHOOLOFMECHATRONICSENGINEERING
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簡(jiǎn)介:中圖分類號(hào)U4641論文編號(hào)102870214S104學(xué)科分類號(hào)080204碩士學(xué)位論文航空活塞發(fā)動(dòng)機(jī)控制器實(shí)物在回路仿真系統(tǒng)設(shè)計(jì)研究生姓名邊文超學(xué)科、專業(yè)航空宇航推進(jìn)理論與工程研究方向系統(tǒng)控制與仿真指導(dǎo)教師于兵南京航空航天大學(xué)研究生院能源與動(dòng)力學(xué)院二О一三年十二月NANJINGUNIVERSITYOFAERONAUTICSASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFENERGYPOWERENGINEERINGRESEARCHONHARDWAREINLOOPSIMULATIONSYSTEMOFCONTROLLERFANAVIATIONPISTONENGINEATHESISINAEROSPACEPROPULSIONTHEYENGINEERINGBYBIANWENCHAOADVISEDBYLECTURERYUBINGSUBMITTEDINPARTIALFULFILLMENTOFTHEREQUIREMENTSFTHEDEGREEOFMASTEROFENGINEERINGDECEMBER2013
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簡(jiǎn)介:復(fù)旦大學(xué)博士后學(xué)位論文航空發(fā)動(dòng)機(jī)轉(zhuǎn)靜子碰摩故障研究多剛體動(dòng)力學(xué)仿真軟件研發(fā)姓名楊積東申請(qǐng)學(xué)位級(jí)別博士后專業(yè)工程力學(xué)指導(dǎo)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
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簡(jiǎn)介:西北工業(yè)大學(xué)碩士學(xué)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(qǐng)學(xué)位級(jí)別碩士專業(yè)系統(tǒng)工程指導(dǎo)教師吳勇20060301西北工業(yè)大學(xué)碩士學(xué)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
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簡(jiǎn)介:西北工業(yè)大學(xué)碩士學(xué)位論文新型航空直線直流電動(dòng)機(jī)驅(qū)動(dòng)控制系統(tǒng)研究姓名巫春玲申請(qǐng)學(xué)位級(jí)別碩士專業(yè)電力電子與電力傳動(dòng)指導(dǎo)教師馬瑞卿20040301西北工業(yè)大學(xué)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
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簡(jiǎn)介:電子科技大學(xué)碩士學(xué)位論文基于PCI總線的航天測(cè)控?cái)?shù)據(jù)錄取系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名熊璐申請(qǐng)學(xué)位級(jí)別碩士專業(yè)通信與信息系統(tǒng)指導(dǎo)教師周先敏20060401A8STRAETA8STRAE了WITHTHEDEVELOPMENTOFAEROSPACEINDUSTRY,THEMULTIFUNCTIONALTERMINALEQUIPMENTFORBASEBANDHASBEENDEVELOPEDINRECENTYEARSTHEHIGHSPEEDDATAFLOWTRANSMITTEDFROMTHESATELLITESISRECEIVEDBYTHESATELLITECOMMUNICATIONEARTHSTATIONANDTHENSENTTOTHEDATATERMINALCENTER,THESPEEDOFWHICHISUPTOHUNDREDSOFMEGABYTESBAUDRATEINORDERTORECEIVETHEDATACORRECTLYANDSTOREITINCOMPUTERFORANALYSISANDPROCESS,AKINDOFSPACETRACKINGDATARECORDINGSYSTEMBASEDONPCIBUSISDESIGNEDANDREALIZEDINTHISDISSERTATION,WHICHENHANCETHESPACETRACKINGSYSTEM’SINTEGRALITYTHEAUTHOR’SMAINWORKSASFOLLOW1ACCORDINGTOTHETECHNICALTARGETOFTHESYSTEM,DESIGNTHEWHOLESYSTEMBYANALYZESTWODIFFERENTMETHODSOFHIGHSPEEDDATARECORDING2DESIGNTHEHARDWARESYSTEM,WHICHFOCUSOILTHESELECTIONOFCHIPSONTHEPCICARD,THEPOWERNETWORK,THESPEEDANDCAPACITYOFTHESTORAGE,THEPCIINTERFACEANDSO011ATTHESAMETIMEDISCUSSEDSOMEPROBLEMSWHICHNEEDTOBEPAIDATTENTIONTOWHENDESIGNTHEPCBBOARDINORDERTOREDUCEEMIANDIMPROVETHEDIGITALCIRCUIT’SPERFORMANCE3REALIZETHEINTERFACEBETWEENPCI9054ANDTHEPCTBUS,INCLUDINGTHEBUSARBITRATION,READANDWRITEOFTHEREGISTERS,THECONFIGURATIONOFTHEEEPROM,THEDMATRANSFER,INTERRUPTRESPONSEANDSOON,4COMPLETETHEDESIGNOFSYSTEM’SLOGICFUNCTIONWITHFPGATHESDRAM’SCONTROLLERANDPINGPONGOPERATIONISSTUDIED,ANDTHEDATA’SCONTINUOUSSTORAGEISALSEALIZED5。THEWDMDEVICEDRIVERHASBEENDEVELOPEDINDRIVERSTUDIO’SDEVELOPMENTENVIRONMENT,WHICHCANMAKETHEHARDWARESYSTEMWORKCORRECTLYTHESCATTER/GATHERDMA’SDEVICEDRIVERISSTUDIEDINDETAILANDTHEUSERAPPLICATION’SDESIGNAPPROACHISALSOPRESENTEDWITHTHEWDMDRIVELTHEUSERCANCOMMUNICATEWITHTHEHARDWAREANDGUARANTEETECEIVEANDSTORETHEDATAINCOMPUTER’SHARDDISKCORRECTLY。IJ
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簡(jiǎn)介:碩士學(xué)位論文碩士學(xué)位論文考慮控制與角速度受限的航天器姿態(tài)非線性滑??刂芅ONLINEARSLIDINGMODEBASEDATTITUDECONTROLOFSPACECRAFTSUBJECTTOCONTROLANGULARVELOCITYLIMITS李理李理哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2015年7月CLASSIFIEDINDEXV4482UDC62978DISSERTATIONFTHEMASTERDEGREEINENGINEERINGNONLINEARSLIDINGMODEBASEDATTITUDECONTROLOFSPACECRAFTSUBJECTTOCONTROLANGULARVELOCITYLIMITSCIDATELILISUPERVISPROFHUQINGLEIACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALITYCONTROLSCIENCEENGINEERINGAFFILIATIONDEPTOFCONTROLSCIENCEENGINEERINGDATEOFDEFENCEJULY2015DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY
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簡(jiǎn)介:碩士學(xué)位論文碩士學(xué)位論文航空發(fā)動(dòng)機(jī)盤(pán)鼓式轉(zhuǎn)子振動(dòng)引起的疲勞問(wèn)題研究INVESTIGATIONONFATIGUEPROBLEMCAUSEDBYVIBRATIONOFAEROENGINEDRUMROTOR董延陽(yáng)董延陽(yáng)哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2015年6月CLASSIFIEDINDEXV21552UDC6211DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGINVESTIGATIONONFATIGUEPROBLEMCAUSEDBYVIBRATIONOFAEROENGINEDRUMROTORCANDIDATEDONGYANYANGSUPERVISORPROFLIUZHANSHENGACADEMICDEGREEAPPLIEDFORMASTEROFENGINEERINGSPECIALITYPOWERMACHINERYANDENGINEERINGAFFILIATIONENERGYSCIENCEANDENGINEERINGDATEOFDEFENCEJUNE,2015DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY
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簡(jiǎn)介:哈爾濱工業(yè)大學(xué)碩士學(xué)位論文超高速撞擊特性分析研究及航天器防護(hù)結(jié)構(gòu)參數(shù)優(yōu)化姓名黃太平申請(qǐng)學(xué)位級(jí)別碩士專業(yè)固體力學(xué)指導(dǎo)教師張偉賈斌20050101墜塹堡三些查蘭三蘭竺蘭蘭堡篁塞ABSTRACTTHETHESISDEALSWITHHYPERVELOCITYIMPACTBETWEENSPACEDEBRISANDPROTECTIONSYSTEMSOFSPACECRAFFSPROTECTIONMATERIALSANDDAMAGECHARACTERISTICSOFPROTECTIONSYSTEMSFORSPACECRAFTSHAVEBEENANALYZEDBYTHETESTDATAANDNUMERICALVALHEANALOGUNDERTHERELIABILITYTHEMINIQUALITYOPTIMIZATIONFORTHEPROTECTIONSYSTEMSOFSPACECRAFISHASBEENSTUDIEDTHETASKANDRESEARCHHAVEGREATSIGNIFICANCETOTHETHEORYANDENGINEERINGTHEMAINRESEARCHINTHEPAPERASFOLLOWINGFIRST,ACCORDINGTOTESTDATA,EMPIRICALFORMULATIONSOFCRATERDEPTHINATHICKTARGETAREOBTAINEDEMPLOYINGDIMENSIONANALYSISANDREGRESSIONANALYSISTHEDIFFERENTMODELSOFEMPIRICALFORMULATIONSAREANALYZEDTHERESULTSSHOWTHATTHEEMPIRICALFORMULATIONSUSINGHARDNESSESOFTHETARGETAREMOREACCURATETOTHETESTTHANTHATUSINGYIELDSTRENGTH,WHICHMAKESOUTTHATHARDEFFECTOFHYPERVELOCITYIMPACTREPRESENTEDBYHARDNESSMUCHREFLECTESSENTIALCHARACTERISTICSTHANTHATUSINGYIELDSTRENGTHTHEEMPIRICALFORMULATIONSOFHOLEDIAMETERINTHINTARGET,OBTAINEDBYDATAREGRESSIONANALYSIS,ISMOREACCURACYTHANTHOSEDERIVEDBYMAIDENGEHRINGANDMCMILLANUNDER也ETESTCONDITIONTHEANALYSISMETHODISRESULTFULTHEEMPIRICALFORMULATIONSOFDEBRISCLOUDSCHARACTERISTICANGLESISOBTAINEDBYTHETESTDATA。SECONDLYUNDERTHESPECIALTESTCONDITION,THEBALLISTIC1IMITEQUATIONFORTHEDOUBLEWALLPROTECTIONSYSTEMSISDEVELOPEDBYTHEREGRESSIONANALYSISOFTHETESTDATATHEWHOLECURRENTOFBALLISTICLIMITDIAGRAMISCONSISTENTWITHPRIMARYDIAGRAM,WHICHSHOWSTHATTHEBALLISTICLIMITEQUATIONDERIVEDBYTHEREGRESSIONANALYSISISFITFORTHERESEARCHANDTESTANDPREPAREDFORTHEREVISEANDREASONABLEMODELOFTHEBALLISTICLIMITEQUATIONTHETHIRD,THEPROTECTIONSYSTEMPARAMETERSOFSPACECRAFFSAREANALYZEDBYOPTIMIZATIONUSINGTHEBALLISTICLIMITEQUATIONOBTAINED,WHICHSOLVETHEOPTIMIZATIONRESULTSOFTHESTRUCTUREPARAMETERSOFTHEBALLISTICLIMITEQUATIONDERIVEDBYCHRISTIANSENARENOTOBTAINEDTHERESULTSOFTHEMINIQUALITYOPTIMIZATIONFORTHEPROTECTIONSYSTEMSOFSPACECRAFTSUNDERTHECELLSPECIALPARTICLESSHOWTHATTHETHICKNESSOFTHECABINWALLANDTHEPROTECTIONSCREENAREII
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簡(jiǎn)介:CCD航天光學(xué)遙感相機(jī)的成像與傳統(tǒng)的膠片成像有著很大的差異,膠片的顆粒度相對(duì)于光學(xué)系統(tǒng)彌散斑來(lái)說(shuō)它的大小可以忽略,而CCD探測(cè)器的像元尺寸一般來(lái)說(shuō)是光學(xué)系統(tǒng)彌散斑的幾倍,把以CCD探測(cè)器為接收器的光學(xué)成像系統(tǒng)看作是空間移不變系統(tǒng)會(huì)帶來(lái)一定的理論上的近似,因而在理論上不能準(zhǔn)確求得分辨力與像質(zhì)的關(guān)系,所以在實(shí)踐中又采用了平均意義的MTF。這里則采用模擬試驗(yàn)及計(jì)算機(jī)仿真的方法來(lái)研究在空間移變條件下的CCD遙感相機(jī)的影像分辨力和像質(zhì)問(wèn)題,這種研究不僅在理論上是一種補(bǔ)充,在工程實(shí)踐上也很有實(shí)際意義。鑒于CCD探測(cè)器成像是數(shù)字化成像,所以本文采用計(jì)算機(jī)仿真和CCD相機(jī)模擬成像試驗(yàn)及理論分析的方法對(duì)CCD探測(cè)器的目標(biāo)影像的分辨力與CCD像元分辨力的關(guān)系及像質(zhì)進(jìn)行了研究并獲得如下主要結(jié)論。1首先仿真了物像與CCD探測(cè)器相對(duì)靜止情況下的成像過(guò)程,仿真中的目標(biāo)采用鑒別率板的圖案即黑白相間的條帶。
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簡(jiǎn)介:基于機(jī)器視覺(jué)的航空儀表自動(dòng)識(shí)別研究作者李澤本指導(dǎo)教師王長(zhǎng)元教授申請(qǐng)學(xué)位學(xué)科計(jì)算機(jī)應(yīng)用技術(shù)西安工業(yè)大學(xué)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;
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簡(jiǎn)介:上海交通大學(xué)碩士學(xué)位論文航天領(lǐng)域技術(shù)創(chuàng)新的動(dòng)態(tài)模式研究姓名宣明申請(qǐng)學(xué)位級(jí)別碩士專業(yè)工商管理(MBA)指導(dǎo)教師陳宏民20040111本課題的研究過(guò)程中首次提出了系統(tǒng)技術(shù)創(chuàng)新的概念針對(duì)航天技術(shù)創(chuàng)新的新特點(diǎn)進(jìn)行了歸納充分運(yùn)用航天領(lǐng)域兩個(gè)典型的案例預(yù)先研究載人航天工程中的技術(shù)創(chuàng)新引出了航天領(lǐng)域的兩種技術(shù)創(chuàng)新模式總結(jié)了預(yù)先研究的技術(shù)創(chuàng)新模式這是基于技術(shù)與需求互動(dòng)模式的拓展同時(shí)總結(jié)了我國(guó)航天企業(yè)技術(shù)創(chuàng)新戰(zhàn)略模式為立足自主創(chuàng)新倡導(dǎo)合作創(chuàng)新注重預(yù)先研究實(shí)施技術(shù)跨越本課題研究成果可以為航天領(lǐng)域技術(shù)創(chuàng)新模式選擇及戰(zhàn)略制訂提供參考也對(duì)相關(guān)的同類行業(yè)具有借鑒意義關(guān)鍵詞技術(shù)創(chuàng)新模式航天領(lǐng)域
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簡(jiǎn)介:分類號(hào)LDCR8/坫涉中國(guó)民用航空學(xué)院碩士學(xué)位論文航空發(fā)動(dòng)機(jī)轉(zhuǎn)子實(shí)驗(yàn)臺(tái)振動(dòng)測(cè)試分析及軟件實(shí)現(xiàn)研究生姓名導(dǎo)師姓名申請(qǐng)學(xué)位級(jí)別一玉蘭亟~爨在陵系題叁堂醚趔筮主奎盤(pán)塑夔攮學(xué)科專業(yè)名稱藍(lán)窒生筮撞迸理詮當(dāng)正攫論文答辯曩期9么篷羔塑叢塞。204年12月20疑中國(guó)民掰航宅學(xué)院頸L6學(xué)位論文ABSTLACLNOWADAYS,THEOLDMAILLTENANCEMODEWHICHMAINTAINSAEROENGINESACCORDINGTOTHEHATIMEIS∞MINGTO也EEND南RLTSEXTR∞F擊撒皤LOSSBOTH強(qiáng)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(qiáng)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
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