簡介：工學碩士學位論文航天器輻射傳遞系數(shù)算法研究SPACECRAFTRADIATIVETRANSFERCOEFFICIENTALGORITHMRESEARCH王正宇哈爾濱工業(yè)大學2009年6月CLASSIFIEDINDEXV4213UDC520DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGSPACECRAFTRADIATIVETRANSFERCOEFFICIENTALGORITHMRESEARCHCANDIDATESUPERVISORACADEMICDEGREEAPPLIEDFORSPECIALTYAFFILIATIONDATEOFORALEXAMINATIONUNIVERSITYWANGZHENGYUPROFZHAOYANGMASTEROFENGINEERINGERGONOMICSANDENVIRONMENTDEPTOFASTRONAUTICENGINEERINGJUNE,2009HARBININSTITUTEOFTECHNOLOGY

簡介：南京航空航天大學碩士學位論文基于小波神經(jīng)網(wǎng)絡的航空發(fā)動機控制與試驗驗證姓名許光華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孫健國20080101基于小波神經(jīng)網(wǎng)絡的航空發(fā)動機控制與試驗論證IIABSTRACTMULTIVARIABLEADAPTIVEPIDCONTROLSCHEMEISSTUDIEDFATURBOFANENGINEINTHISTHESISPIDCONTROLMETHODBASEDONWAVELETNEURALWKNEURALWKPIDCONTROLMETHODBASEDONWAVELETNEURALWKAREPROPOSEDFATURBOFANENGINESOFTWAREHASBEENDESIGNEDFTHEHARDWAREINLOOPSIMULATIONPLATFMARESEARCHISDONEBYTHISSOFTWAREINTHEHARDWAREINLOOPSIMULATIONPLATFMBENEFITEDFROMWAVELETTRANSFMBEINGCONSTRICTIVEFLUCTUANTITSHOWSEXCELLENTTEMPALFREQUENCYLOCALIZATIONPROPERTYWHILEITPOSSESSESSUCHMERITSASABILITYOFMAPPINGNONLINEARSYSTEMSSELFLEARNINGSELFADAPTATIONSOONTHUSTHISWKCONVERGESQUICKLYWITHHIGHPRECISIONGOODROBUSTNESSTHISTHESISADOPTSWAVELETNEURALWKASIDENTIFIERADJUSTSTHEPARAMETERSOFTHEPIDCONTROLLERONLINEGETSTHEGOODRESULTSATLASTWEUSESOMEEXAMPLESTOVERTIFYTHEVALIDOFTHEMETHODSABOVEUSINGACERTAINTURBOFANAEROENGINEMODELASSTUDYOBJECTTHECONTROLLERSAREDESIGNEDWITHINTHEFLYENVELOPWITHTHECONTROLMETHODABOVETOBUILDTHEHARDWAREINLOOPSIMULATIONPLATFMWEUSEACOMPUTERASMODELACOMPUTERASCONTROLLERC8051F021SINGLECHIPITSRELATIVECIRCUITASSENSTHEDEFINITIONOFDATAINTERFACETHECOMMUNICATIONBETWEENSIGNALSAREACCOMPLISHEDWEUSEVISUALC60TODEVELOPTHESOFTWAREOFMODELCONTROLLERDEVELOPTHESOFTWAREOFC8051F021SINGLECHIPBYSILICONLABATIESIDESOMEHARDWAREINLOOPSIMULATIONSHAVEBEENCONDUCTEDTOTESTTHERESEARCHRESULTSTHESIMULATIONSDOSHOWTHATTHESERESULTSREALLYHAVEPRACTICALVALUESKEYWDSAEROENGINESWAVELETNEURALWKMULTIVARIABLEADAPTIVEPIDCONTROLLERHARDWAREINLOOPSIMULATIONDATACOMMUNICATIONC8051F021SINGLECHIP

簡介：中國民用航空學院碩士學位論文航空發(fā)動機狀態(tài)評估系統(tǒng)開發(fā)姓名王帥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許春生20041220中國民用航空學院碩士學位論文ABSTRACTWITHTLLER印IDDEVELOPMENTOFINFBHNATIONTECHNOLOGYANDTHEAPPLICATIONOFMANAGERIALTECHNIQUEOFAEROENGINENECT，TLLEMAINTEN柚CEMODEOFAEROENGINEHASCHANGED伊EATLYNOWADAYS，出EOLDMAIMENAILCEMODEWHICHMAINTAINSAEROENGINESACCORDINGTOTHEHARDTIMEISCOMINGTOTLLEENDFOR旭EX扛RLORDINARYLOSSBO血INECONOMYANDTIMEMEALL、、HILE，ANEWLYDEVELOPEDMAINTENANCEMODEHASBEENIMPKMET埔EDONAEROEN西NES，WHICHBRINGFONVARDSTLLATTHEAEROENGINESSHOMDBEMAINTAINEDACCORDINGTOITSREALCIRCUMSTANCETOLEARNTLLEHEALTLLSTATEOFAEMENGINESEXACTLYAILDQUICKLY，WENEEDAGOODASSESSMENTMETHODTHROUGHWHICHWECAILAPPOINT出EOPTIMUMTIRLLEFOFTHEFEMOVALOFAEROENGINESANDDRAWUPTHERATIONALMAIMENANCEPL砌NG0NMEBASISOFANALYZINGTHEDI船DⅥMTAGEOFSEVERALCURRENTASSESSMENTMETHODSOFAEROENGINE，TLLEHEALTILASSESSMENTSYSTEMOFAEROENGINEISCONSTRUCTCDWITHAHP／組AL”ICALHIERARCHYPMCESSTLLEORYAILDFUZ巧MAMTHISASSESSMENTSYSTEMCANCOMBINEQUALITATIVEDATAWI血QUANTITATIVEDATABYUSINGSU_BJECTIONNNCTIONANDCANBEUSEDINWEIGHTINGASSESSMCNTOF也EHCALTLLS詛TEOFA咖EN百NEWECAILTHISMCTHODFAHPFUZZYANAL”ICALHIERARCHYPMCESSEVERYAEROENGINEPRODUCESA孽EATDEALOFDA詛INITSDAILY、、ORHNGPROCESS，THESEDATURNCOME矗OMNIGHTCOURSE，WORKSHOP，TESTCELLA11DETCBYUSINGFAHPLWECAILE瓶CIENTLYINTEGRATEALLVALUABLEINFBNNATIONOFANACROENGINETOA11INDEX、VHICHEMBODIESTHEHEAL也STATEOF血EAEROEN垂NETHERESUNOFQUEUINGAEROENGI工1ENEETACCORDINGTOTLLEHCAL也INDEXWILLBEVERYHEIPFULFORENGIILEERSTOMANAGETHEAEROENGINENEETMORECONV商ENTB趾DC伍DENTLYWI也恤SUPPORTOFAER0ENG岫ALLLIFEMANAGEM咖D撕BASE，WHICHISBASEDONOMCLEDATAB髂E，也CACROENGMINTEGRATEDWEIGHTQUEUINGSYSTEMISDEVELOPEDNLISSYSTEMCANDEALW燭ALLHNDOFDAMMOFAEMENGINEAUTOM鰣CALLY，QUICKLYANDPRECISELYJTSAPPLICATIONREALIZEST11EDATAUPDATCAILDDATASHAREWHICH刪SMAILYADVANTAGESFORTHEDEVELOPMEMOFLONGDISTANCEANDRE“TIMEASSESSMENTOFACROENGINEKEYWORDSENGINCALLLIFEMANAGEMENT；AHPANAL螄CHIERARCHYPROCESS；SUBJECTLONFHNCTIONHEALMASSESSMENTLI

簡介：南京航空航天大學碩士學位論文航空專用網(wǎng)格中任務調(diào)度技術的研究姓名丁瑞申請學位級別碩士專業(yè)計算機應用技術指導教師莊毅20080101航空專用網(wǎng)格中任務調(diào)度技術的研究IIABSTRACTABSTRACTTASKSCHEDULINGISONEOFTHEGRIDKEYTECHNOLOGIESWHOSEAIMISTHATUSER’TASKREQUESTCANBEDISTRIBUTEDTOGRIDRESOURCESREASONABLYWHICHCANACHIEVETHEAIMOFPERFMINGTASKEFFICIENTLYUSINGRESOURCESREASONABLYINSPECIALAVIATIONGRIDFAIRCRAFTVIRTUALDESIGNITINVOLVESALOTOFSUPERCOMPUTERSOFMATRIXTHEDIMENSIONOFMATRIXCANREACHMULTIMILLIONTHEUSER’TASKREQUESTNEEDSHIGHRESOURCECOMPUTINGCAPABILITYINDERTOPERFMTASKEFFICIENTLYTHERESEARCHONGRIDTASKSCHEDULINGTECHNOLOGYISABSOLUTELYNECESSARYFIRSTOFALLGRIDARCHITECTUREGRIDKEYTECHNOLOGYWASSTUDIEDGRIDTASKSCHEDULINGMODELTASKSCHEDULINGPROCESSSCHEDULINGALGITHMSWEREDEEPLYDISCUSSEDTHEACTERISTICSDEFICIENCYOFCURRENTGRIDTASKSCHEDULINGALGITHMWEREANALYZEDACCDINGTOTHEREQUESTOFSPECIALAVIATIONGRIDFAIRCRAFTVIRTUALDESIGNTHESPECIALAVIATIONGRIDMULTILEVELTASKSCHEDULINGSYSTEMWASDESIGNEDITSKEYFUNCTIONMODULESWEREDESIGNEDINDETAILGEICALGITHMWASIMPROVEDFROMEACHKEYLINKBASEDONTHEANALYSISOFITSACTERISTICSDEFICIENCYCOMBINEDWITHTHEACTERISTICSOFGLOBALSCHEDULERTHEREQUESTOFLARGESCALECOMPUTINGINAIRCRAFTVIRTUALDESIGNTHEGLOBALTASKSCHEDULINGALGITHMWASDESIGNEDTHEPARALLELISMOFGEICALGITHMWASANALYZEDCOMBINEDWITHTHEACTERISTICSOFLOCALSCHEDULERTHELOCALTASKSCHEDULINGALGITHMWASDESIGNEDTHESIMULATIONEXPERIMENTWASCARRIEDOUTWITHGRIDSIMSIMULATIONTOOLTHEEXPERIMENTALRESULTSINDICATETHATTHETASKCOMPLETIONTIMERESOURCEUTILIZATIONCOSTOFIMPROVEDGEICALGITHMWEREIMPROVEDTHEGLOBUSTOOLKITWASSTUDIEDTHELOCALSCHEDULINGSUBSYSTEMWASREALIZEDINITIALLYTHEFEASIBILITYEFFECTIVENESSOFTHESUBSYSTEMBYAPRACTICALEXAMPLEINTHESPECIALAVIATIONGRIDTASKSCHEDULINGSYSTEMFAIRCRAFTVIRTUALDESIGN，KINDSOFFACTSAIMINGATGRIDCOMPUTINGRESOURCEWASCONSIDEREDTHEPERFMANCEOFGRIDTASKSCHEDULINGWASIMPROVEDITWILLMAKETHEPAVEMENTFTHEDEVELOPMENTOFTECHNOLOGIESINAIRCRAFTVIRTUALDESIGNDOMAINKEYWDSGRIDGRIDARCHITECTUREVIRTUALDESIGNTASKSCHEDULINGGEICALGITHMQUALITYOFSERVICE

簡介：碩士學位論文非合作航天器單目視覺快速位姿確定算法研究APPROACHTOFASTRELATIVEPOSITIONATTITUDEDETERMINATIONBASEDONMONOVISIONFNONCOOPERATIVESPACECRAFTS楊琳雪哈爾濱工業(yè)大學2010年7月CLASSIFIEDINDEXTP273UDC68152DISSERTATIONFTHEMASTERDEGREEINENGINEERINGAPPROACHTOFASTRELATIVEPOSITIONATTITUDEDETERMINATIONBASEDONMONOVISIONFNONCOOPERATIVESPACECRAFTSCIDATEYANGLINXUESUPERVISPROFDUANGUANGRENDEPUTYSUPERVISPROFSONGSHENMINGACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALTYCONTROLSCIENCEENGINEERINGAFFILIATIONCENTERFCONTROLTHEYGUIDANCETECHNOLOGYDATEOFDEFENCEJULY2010DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：南昌大學碩士學位論文低壓鑄造在大型薄壁航空鋁合金鑄件上的應用研究姓名馮喜瑞申請學位級別碩士專業(yè)材料科學指導教師周浪甘武奎20071020ABSTRACTABSTRACTTHELOWPRESSURECASTINGTECHNOLOGYISAKINDOFMOREADVANCEDCASTTECHNOLOGY，THISTECLMOLOGYMECHANIZATIONANDAUTOMATIONLEVELISHIGH，CASTQUALITYISSTABILIZEDTHERESEARCHOFTHISPAPERSOLVESTHELARGEANDTHINWALLAERIALCASTMETALLURGICALQUALITYPROBLEMOFALUMINUMALLOYUSINGTHELOWPRESSUREC硼TILLGTECHNOLOGYTHROUGHCASTSMMTURALANALYSISANDTHELOWPRESSURECAST崦PRINCIPLEANALYSIS，HAVEDESIGNEDTHECASTSYSTEMANDGOUR∞1口ECHNOLOGYSCHEMEOFTHELOWPRESSURECASTING；THROLLGHCOMPUTERIMITATETOSOLIDIFYTECHNICALANDTECHNOLOGYEXPERIMENTFORCASTMGSYSTEM，CASTINGPRESSURE，CASTINGTIME，KNOTSHELLTIME，CRYSTALLIZATIONPRESSURE，DWELLTIMEANDCASTINGTEMPERATUREETCVERIFYORTESTMAKINGSULETHECASTPRODUCTIONTECHNOLOGYANDCOURSETECHNOLOGYPARAMETER，HAVESOLVEDCASTMETALLURGICALQUALITYPROBLEMANDMAKINGTHEQUALIFIEDRATEOFTHECASTT0RAISETO80％I【EYWORDLOWPRESSURECASTING；LARGETHINWALLCAST；ALUMINUMALLOY；COMPUTERSIMULATIONⅡ

簡介：西北工業(yè)大學碩士學位論文基于PETRI網(wǎng)的綜合航空電子系統(tǒng)性能分析姓名劉曉斌申請學位級別碩士專業(yè)系統(tǒng)工程指導教師吳勇20060301兩北工業(yè)大學碩1J論史基于PETRI網(wǎng)的綜臺航空乜子系統(tǒng)性能分析ABSTRACTSYSTEMPERFORMANCEEVALUATIONISTHEIMPORTANTTHEORETICALBASISANDSUPPORTINGTECHNOLOGYOFTHEDEVELOPMENTOFCOMPUTERSYSTEMANDNETWORK，THEREARETHREEMAJORAIMSFORITSELECTION，DESIGNANDIMPROVEMENTTHATISTOSAYTHATTHROU曲THEEVALUTION，THECOMPARATIVELYBETTERSYSTEMWILLBESELECTED，ANDTHATTHEOPTIMUMDESIGNANDCONFIGURATIONWILLBEOBTAINEDONTHEBASISOFIT，ANDTHATTHEOPERATIONEFFICIENCYWILLALSOBEINCREASEDBYIMPROVINGTHECURRENTSYSTEMTHETHESISAREPETRINETSPN一BASEDPERFORMANCEANALYSISOFINTEGRATEDAVIONICSSYSTEMTHROUGHTHEANALYSISOFRELIABILITYANDDATABUSPERFORMANCEINDEXOFINTEGRATEDAVIONICSSYSTEMCANOPTIMIZEINTEGRATEDAVIONICSSYSTEMSIMULMINGRELIABILITYANDMILSTD1553B1553BOFINTEGRATEDAVIONICSSYSTEMBYTHEDETERMINISTICANDSTOCHASTICPETRINETSDSPNANDSTOCHASTICPETRINETSSPNARETHEMETHODSOFTHETHESISTHECONTENTOFTHISTHESISARESHOWNASFOLLOWINGFIRSTLY，BUILDINGTHEMODELOFSYSTEMBYPHIISNOTONLYTOGETSTEADYMEANOFPERFORMANCEINDEXOFSYSTEM，BUTALSOTOGETTHELAWOFCHANGEBYTIMETHERESUROFRESEARCHINDICATSTHERELIABILITYOFSERIESMODEL，THEBUSLOADOF1553B，SYSTEMDELAYTIMESECONDLY，THEOTHERIMPORTANTPOINTISTORAISETHEMODELOFEVALUATINGINTEGRATEDAVIONICSPERFORMANCE，INCLUDINGTHEUSEOFFUZZYTHEANALYTICHIERARCHYPROCESSFAHPFINALLY，F(xiàn)ILEMODELANDMETHODSOFPERFORMANCEEVALUATIONISEFFECTIVEMETHODINEVALUATINGDIFFERENCEOFVARITYOFSYSTEMTHEANALYSISOFTHEDATAANDCURVEOFMODELCANPROVIDEINDEXOFSYSTEMPERFORMANCETHEINDEXOFSYSTEMCANPROVIDEANIMPORTANTTHEORETICALBASISFORTHEDENGNANDIMPROVEMENTOFTHESYSTEMKEYWORDSINTEGRATEDAVIONICSSYSTEMPETRINET1553BDATABUSRELIABILITYPERFORMANCEEVALUATION11

簡介：工學博士學位論文航空潤滑油流變特性及其對潤滑性能影響的研究王燕霜哈爾濱工業(yè)大學2006年3月CLASSIFIEDINDEXTH1172UDC62189DISSERTATIONFTHEDOCTALDEGREEINENGINEERINGSTUDYOFRHEOLOGICALBEHAVIOFAVIATIONLUBRICATINGOILITSEFFECTONLUBRICATIONPERFMANCECIDATEWANGYANSHUANGSUPERVISPROFWANGLIQINASSOCIATESUPERVISPROFYANGBOYUANACADEMICDEGREEAPPLIEDFDOCTOFENGINEERINGSPECIALITYMACHINEDESIGNTHEYAFFILIATIONSCHOOLOFMECHANTRONICENGINEERINGDATEOFDEFENCEMARCH，2006DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：東北大學碩士學位論文航空O形橡膠密封圈性能測試系統(tǒng)研制姓名韋杰申請學位級別碩士專業(yè)機械制造及其自動化指導教師原所先20040201東北大學碩士學位論文摘要計，解決了原設計中人工操作帶來的各種不便。應用程序的開發(fā)使整個測試過程更加直觀，實現(xiàn)了整個控制系統(tǒng)的自動化。關鍵詞0形圈，性能測試，液壓系統(tǒng)，密封，泄漏M

簡介：工學碩工學碩士學位論文士學位論文基于對偶四元數(shù)的航天器相對導航方法研究STUDYONRELATIVENAVIGATIONMETHODFORSPACECRAFTBASEDONDUALQUATERNION崔本杰崔本杰哈爾濱工業(yè)大學哈爾濱工業(yè)大學2009年6月CLASSIFIEDINDEXV4482UDC62978DISSERTATIONFORTHEMASTERDEGREEINENGINEERINGSTUDYONRELATIVENAVIGATIONMETHODFORSPACECRAFTBASEDONDUALQUATERNIONCANDIDATECUIBENJIESUPERVISORPROFSUNZHAOWEIACADEMICDEGREEAPPLIEDFORMASTEROFENGINEERINGSPECIALITYSPACECRAFTDESIGNAFFILIATIONRESEARCHCENTEROFSATELLITETECHDATEOFDEFENCEJUNE,2009DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：分類號UDC密級1933868學位論文航空薄壁結(jié)構件加工變形數(shù)值仿真研究作者姓名張延成指導教師鞏亞東教授申請學位級別學科專業(yè)名稱論文提交日期學位授予日期東北大學先進制造與自動化技術研究所碩士學科類別工學機械制造及其自動化2008年1月日2008年3月日評閱人矯穡，彳不謠論文答辯日期2008年2月日答辯委員會席參1灑叫東北大學2008年2月ADISSERTATIONINMECHANICALMANUFACTURINGANDAUTOMATIONTHENUMERICALSIMULATIONSTUDYONMACHININGDEFORMATIONOFTHEAERONAUTICTHINWALLEDSTRUCTURECOMPONENTSBYZHANGYANCHENGSUPERVISORPROFESSORGONGYADONGNORTHEASTERNUNIVERSITYFEBRUARY2008

簡介：中南大學碩士學位論文航空剎車用C/C復合材料摩擦磨損行為研究姓名李江鴻申請學位級別碩士專業(yè)材料學指導教師熊翔20020101中南大學碩士學位論文ABSTRACTC／CCOMPOSITESIS也ELATESTAIRCR硪銜CTIONMATERIALANDMEIR銜CTIONANDWEARPROPENIESAREVCRYIMPONANT．FRICTIONANDWEARPROPERTIESOFC／CCOMPOSITESF沁MDI日’ERENTTECHNIQUESWERESTUDIEDANDEH色CTSOFBRAL【INGSPEEDSAILDPRESSURESWEREALSOANALYZEDINORDERTOJNQUIREINTOTHEWOMMECHAJLISMS，T11EMORPHOLOGYANDS【RUCTUREOFWOMSURFACESAND、VEARDEB“SWEREEXAMINEDTHROUGHUSI“GOPTICALMICROSCOPHSCARMINGEKCTRONNLICROSCOPY，XRAYDIF疔ACTION，JASERRARNANMICMSPECTROSCOPY1FRICTIONANDWEARPROPERTIESOFC／CCOMPOSITESWITHDIFREREMPYROL”ICCARBONMICROSTRUCTUREWERESTUDIED．ITSHOWEDTHATC／CCOMPOSITESMAINLYWITHROU曲FAMJNARRLPYROJ如CCARBONHAVESMAIIUNIFOMLWEARDEBRJSANDTHEMOSCSTABIEFRICTIONAND、、EARPROPENIES，WHKHCANMAIM“NATHIGHBRAKINGSPEEDSANDPRESSUREANDTHELINEARⅥ’EARISUNDER2UN1／PLAIE．TIME，OWINGTOTHEHIGHESTDEGREESOFGRAPHITIZATIONANDTHERMALCONDUCTIVITIES．C／CCOMPOSITESMAINLYWITHSMOOM1AMINARSLPYR。L”ICCARBONHAVEUNSTABLEPROPENIESOFFHCTIONANDWEAROWJNGTOLOWERGRAPHITIZATIONDE目EESANDTHERMALCONDUC“VITIES．C，CCOMPOSITESIMPREGNATEDONLYBYPITCHHAVETHEHI曲ESTWEARRATESANDTHE1INEARWEARISUPTO2733UM／PLATETIME．2THEFRJCTIONANDWEARPROPC九JESOFC／CCOMPOSJTESUNDERDJFRERENTBRAKINGSPEEDSANDPRESSURESWEFESTUDIEDTHERESULTSSHOWEDATBRAKINGSPECDOF10N1／STHEREISAPEAKINCOEMCIENTOF_FRICTIONSPEEDCUⅣESWHENTHEBRAKINGPRCSSUREISKEPTAT60N／CM2，ANDWEARMTESINCFEASEDWITHBRAKINGSPEEDANDTHEWEIGHTLOSSINCREASED1ARGE】YATHJGHERBRAKINGSPEEDSOWI五GTOOXIDATION，ESPECIALIYTOC／CCOMPOSITESWITHIOWCONDUC“VITIES；WITHTHEJNCRCASEOFBRAKINGPRESSURETHECOEFNCIENTOFFRICTIONDECREASED1IGHTLYBUTTHEWEIGHTLOSSINCREASED，ESPECLALLYTOC／CCOMPOSITESWITH10WCONDUCTIVITIES．

簡介：西北工業(yè)大學碩士學位論文某型航空發(fā)動機數(shù)控仿真系統(tǒng)軟件設計研究姓名陳偉靜申請學位級別碩士專業(yè)控制理論與控制工程指導教師李華聰20030301西北工業(yè)大學碩學位論文ABSTRACTABSTRACTRESULTFROMTHEDEVELOPINGOFAEROPROPULSIONTECHNOLOGYANDMULTIVARIABLECONTROLTECHNOLOGYEXTRAHI曲CONTROLPRECISIONISDEMANDEDINORDERTOMEETTHEDEMAND，AEROENGINECONTROLSYSTEMBECOMESMOREANDMORECOMPLICATED，HYDRAULICSYSTEMTHATUSEDWIDELYINTHEPASTISHARDTOORCANNOTACHIEVETHATPRECISIONTHEDIGITALELECTRONICCONTROLLERCHARACTERSWITHHIGHRUNNINGSPEED，HIGHPRECISION，F(xiàn)LEXIBILITYINDESIGNINGETC，ITOVERWHELMSTHEOTHERDESIGNMETHODINAEROENGINECONTROLLERDESIGNWHATTHEPAPERDISCUSSESISPARTOFAEROEILGINEREALTIMEDIGITALELECTRONICCONTROLSIMULATIONSYSTEMTHROUGHANALYZINGTHEREQUIREMENTINTECHNOLOGYANDFUNCTIONSOFTHESYSTEM，THISPAPERPRESENTSTEEHNIQTIESTOBUILDTHESYSTEM，THEPAPERFOCUSESONSOFTWAREDESIGNING，INCLUDINGSIMULATINGDIGITALCONTROLLERCOMMUNICATINGBETWEENCOMPUTERSANDCOMPUTERWITHOTHERDEVICES，ANDGRAPHICSINTERFACEWITHUSERANDINTERFACESWITHHARDWARE，THEPROJECTCANMEETTHEREQUIREMENTFORENGINEERINGAPPLICATIONTHROU曲PRIMARYTESTINGKEYWORDSAEROENGINE，AEROENGINECONTROL，REALTIMEDIGITALELECTRONICSIMULATIONSIMULATIONSYSTEM，SOFTWAREDESIGN

簡介：山東大學博士學位論文航空整體結(jié)構件加工變形滾壓校正理論及方法研究姓名王中秋申請學位級別博士專業(yè)機械制造及其自動化指導教師李劍峰孫杰20090501山東_人學博IJ學位論文釋放過程采用邊界條件轉(zhuǎn)換模擬，在底面不共線的三點施加3．2．1約束，使工件可以自由變形，獲得了夾具釋放后框類結(jié)構件的變形。設計了銑削實驗，將模擬獲得的框類結(jié)構件的最終變形與實驗獲相比較，驗證了有限元模型的正確性。根據(jù)二維滾壓過程數(shù)學物理模型構建了二維薄壁滾壓有限元仿真分析模型。分析了不同滾壓力、不同薄壁厚度下滾壓過程中材料流動、應力、應變變化關系，并以切削應力為例分析了滾壓應力與初始應力的相互作用關系。通過分析滾壓應力與初始應力的作用關系表明薄壁滾壓過程可以看作是滾壓機械應力與初始應力疊加的過程，該過程可以通過調(diào)整滾壓力及滾壓位使薄壁產(chǎn)生不同程度的塑性變形量及內(nèi)應力分布。不同滾壓力對于薄壁滾壓產(chǎn)生的內(nèi)應力分布不同當滾壓力較低時，滾壓過程只能在淺表層產(chǎn)生較大的滾壓力壓應力波谷，該滾壓力水平為低滾壓力水平；隨著滾壓力的增加，滾壓產(chǎn)生的表層應力開始接近深層材料的應力，并引起深層材料應力的較大改變，為過渡滾壓力水平；滾壓力進一步增大，使?jié)L壓后工件材料應力在表層形成最大應力變化區(qū)，則為高滾壓力水平，其中過渡滾壓力水平對材料表層及深層綜合影響最大而又不會產(chǎn)生較大塑性變形。相同滾壓力下，薄壁滾壓應力隨著薄壁厚度的增加，峰值與深層材料應力的平均水平都有所降低，但是最大應力峰值產(chǎn)生的深度基本保持不變。將滾壓應力與初始應力的疊加關系應用NT型件的滾壓變形中，提出了基于校正圖譜進行校J下的滾壓校正思路，并通過有限元仿真分析進行了初步驗證。采用解析方法和有限元法分析了平面二維應力狀態(tài)毛坯初始殘余應力的矩形板工件在不同初始應力條件下，逐層剝除過程中殘余應力的重新分布規(guī)律以及引起的加工變形規(guī)律。分析表明，毛坯的初始應力狀態(tài)對工件的變形形式具有決定性作用當毛坯初始殘余分布狀態(tài)為表層為壓應力、中間為拉應力時，單面去除材料后，工件發(fā)生兩端向上翹曲的變形；當毛坯初始殘余分布狀態(tài)為表層為拉應力時，工件單面去除材料后，發(fā)生兩端向下彎曲的變形。以“日”字形兩隔框結(jié)構件為例，構建了側(cè)壁局部滾壓彎曲校正的有限元仿真分析模型，分析了滾壓過程中滾壓應力與初始應力的作用關系，以及不同滾壓參數(shù)下滾壓變形的變化規(guī)律。基于以上分析構建了兩隔框結(jié)構件滾壓變形校正圖譜，并進行了仿真分析，表明該方法在隔框變形校正分析中有效，進一步通過三隔框結(jié)構件的彎曲變形校正仿真及實驗對比進行了驗證，表明通過查詢校正圖譜確定隔框類整體結(jié)構件彎曲滾壓校正參數(shù)有效可行。對于實際應用可能產(chǎn)生的誤差使校正結(jié)果一次無法滿足要求XII

簡介：中圖分類號V2342論文編號102870214S001學科分類號080203碩士學位論文航空活塞發(fā)動機進氣系統(tǒng)設計與分析研究生姓名姜楠學科、專業(yè)機械設計及理論研究方向活塞發(fā)動機設計指導教師陳偉教授南京航空航天大學研究生院能源與動力學院二О一三年十二月承諾書本人聲明所呈交的博碩士學位論文是本人在導師指導下進行的研究工作及取得的研究成果。除了文中特別加以標注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得南京航空航天大學或其他教育機構的學位或證書而使用過的材料。本人授權南京航空航天大學可以將學位論文的全部或部分內(nèi)容編入有關數(shù)據(jù)庫進行檢索，可以采用影印、縮印或掃描等復制手段保存、匯編學位論文。（保密的學位論文在解密后適用本承諾書）作者簽名日期