簡介：、1分類號UDC注1密級1725785學(xué)位論文航空器進(jìn)離場排序系統(tǒng)設(shè)計與實(shí)現(xiàn)指導(dǎo)教師姓名題名和副題名賴志堅作者姓名職務(wù)、職稱、學(xué)位、單位名稱及地址申請專業(yè)學(xué)位級別碩士專業(yè)學(xué)位類別程亟工程領(lǐng)域名稱筮鮭王程提交論文日期2010論文答辯日期2010學(xué)位授予單位和日期電子科墊太一堂答辯委員會主席主J；鴦評閱人查丞苤D監(jiān)2010年月日注1注明國際十進(jìn)分類法UDC的類號獨(dú)創(chuàng)性聲明本人聲明所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。據(jù)我所知，除了文中特別加以標(biāo)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，也不包含為獲得電子科技大學(xué)或其它教育機(jī)構(gòu)的學(xué)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(xiàn)均已在論文中作了明確的說明并表示謝意。簽名日期男口肜年鄉(xiāng)月／EL論文使用授權(quán)本學(xué)位論文作者完全了解電子科技大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定，有權(quán)保留并向國家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱。本人授權(quán)電子科技大學(xué)可以將學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進(jìn)行檢索，可以采用影印、縮印或掃描等復(fù)制手段保存、匯編學(xué)位論文。保密的學(xué)位論文在解密后應(yīng)遵守此規(guī)定簽名名咎

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文計算機(jī)圖形圖像技術(shù)在航空弧齒錐齒輪檢測中的應(yīng)用研究姓名劉振宇申請學(xué)位級別碩士專業(yè)機(jī)械電子工程指導(dǎo)教師方宗德20040301兩北R業(yè)人學(xué)610學(xué)位論義ABSTRACTASANEFFECTIVEASSISTANTMEANSTHECOMPUTERGRAPHICSIMAGETECHNIQUEHASINFILTEREDTHERESEARCHANDDEVELOPMENTOFOTHERSUBJECTSSTEPBYSTEPSPIRALBEVELGEARSAREWIDELYUSEDINAVIATIONTRANSMISSIONASKEYCOMPONENTSOFHELICOPTERCONTROLLINGTHEIRMESHINGQUALITYISANIMPORTANTANDDIFFICULTPROBLEMTHEPAPERSBACKGROUNDISATASKOFNATIONALDEFENCEADVANCERESEARCHANDTHEPAPERREGARDSCONTACTTRACEOFGEARSASRESEARCHOBJECTTHEPAPERHASSTUDIEDSELECTIVELYTHETECHNIQUEOFCOMPUTERGRAPHICANDIMAGEANDAPPLIEDITINTHEDETECTIONANDEVALUATIONOFSPIRALBEVELGEARSFIRSTLYTHEPAPERINTRODUCESTHEDEVELOPMENTANDAPPLICATIONOFCOMPUTERGRAPHICSIMAGETECHNIQUEDISCUSSESTHEPRINCIPLEANDMETHODOFCGANDDIGITALIMAGEPROCESSINGSUCHASMATRIXOFTHEGRAPHICTRANSFORMATIONHOMOGENEOUSREFERENCEFRAMESAMPLINGANDQUANTIZATIONOFTHEIMAGEFILEFORMATOFTHEIMAGETEMPLATEOPERATIONETCSECONDLYTHEPAPERINTRODUCESTHEPURPOSEANDMETHODOFIMAGEENHANCEMENTPROCESSINGEXPLAINSTHEEACHOCCASIONOFTHOSEMETHODSSUCHASTHRESHOLDTRANSFORMATIONSMOOTHINGPROCESSINGSHARPENINGPROCESSINGANALYZESANDCONTRASTSTHEPROCESSINGRESULTSOFOBJECTIMAGETHIRDLYTHEPAPERINTRODUCESTHEMETHODOFMATHEMATICSMORPHOLOGICEDGEDETECTIONANDTHINNINGPROCESSINGATAINSCHARACTERDESCRIPTIONOFIMAGEANDCHARACTERDOTSOFTHECONTOURFOURTHLYTHEPAPERPROCESSESTHECOORDINATETRANSFORMATIONTOCHARACTERDOTSANDBASICSPLINESFITTINGIMPORTSCORRELATIVECONDITIONTODEVISEMESHINGLINEANDMESHINGTRACKATLASTTHEPAPERIMPORTSTHEMETHODSOFISOLINEANDAREATILLINGANDSHOWSTHELOADLAYOUTOFSPIRALBEVELGEARSBYISOLINEANDAREAFILLINGTHEPAPERSUMSUPTHEBETERMETHODANDPROCESSBYCONTRASTINGTORESULTSFROMSEVERALPROCESSMETHODSTOCONTACTTRACEOFGEARSTHEPAPEROFFERSAVIABLEMETHODFORTHEDETECTIONANDEVALUATIONOFSPIRALBEVELGEARSTHISMETHODCANOFERREFERENCEFORAMENDINGOFTHEGEARTOOTHSURFACEANDPOSSESSESIMPORTANTSCIENTIFICANDAPPLIEDVALUEFORACTUALDESIGNAND

簡介：分類號TP311密級ＵＤＣ621編號工學(xué)碩士學(xué)位論文基于航空結(jié)構(gòu)件的快速建模技術(shù)研究碩士研究生劉明指導(dǎo)教師郝博教授學(xué)科、專業(yè)機(jī)械設(shè)計及理論沈陽理工大學(xué)2017年3月分類號TP311密級ＵＤＣ621編號工學(xué)碩士學(xué)位論文基于航空結(jié)構(gòu)件的快速建模技術(shù)研究碩士研究生劉明指導(dǎo)教師郝博教授學(xué)位級別工學(xué)碩士學(xué)科、專業(yè)機(jī)械設(shè)計及理論所在單位機(jī)械工程學(xué)院論文提交日期2016年12月15日論文答辯日期2017年03月12日學(xué)位授予單位沈陽理工大學(xué)

簡介：航空發(fā)動機(jī)調(diào)節(jié)保護(hù)系統(tǒng)多目標(biāo)控制問題研究MULTIOBJECTIVEREGULATINGPROTECTINGCONTROLFAEROENGINES劉曉鋒劉曉鋒2008年6月CLASSIFIEDINDEXV23513UDC620DISSERTATIONFTHEDOCTALDEGREEINENGINEERINGMULTIOBJECTIVEREGULATINGPROTECTINGCONTROLFAEROENGINESCIDATELIUXIAOFENGSUPERVISPROFYUDARENASSOCIATESUPERVISPROFZHAOJUNACADEMICDEGREEAPPLIEDFDOCTOFENGINEERINGSPECIALTYPOWERMACHINERYENGINEERINGAFFILIATIONSCHOOLOFENERGYSCIENCEENGINEERINGDATEOFDEFENCEJUNE2008DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文航空發(fā)動機(jī)系統(tǒng)建模與故障診斷研究姓名方前申請學(xué)位級別碩士專業(yè)控制理論與控制工程指導(dǎo)教師史忠科20050301西北工業(yè)大學(xué)碩士學(xué)位論文人BSTRACTABSTRACTMODELINGANDMODELBASEDAPPROACHESOFFAULTDIAGNOSISFORENGINEARETWOFIELDSOFRESEARCHFORENGINESRELIABILITYENGINEERINGFROMTHEVIEWPOINTOFMODELBASEDFAULTDETECTIONTHISTHESISDISCUSSEDTHOSEPROBLEMSINCLUDINGMODELINGSIMULATIONANDTHEDESIGNOFAKINDOFFAULTDETECTIONFILTERFORENGINETHEMAINRESULTSOFTHETHESISAREASFOLLOWING1ONTHEBASISOFPERFECTGASSTHERMODYNAMICCHARACTERISTICSOMETHERMODYNAMICPROBLEMSOFENGINEAREDISCUSSEDANDTHECOMPUTATIONAPPROACHESOFSPECIFICHEATENTHALPYENTROPYOFGASINENGINECOMPONENTAREGIVEN2ASORTOFCOMPONENTBASEDMODELOFENGINEISDISCUSSEDTHEIMPORTANCEOFCOMPONENTPERFORMANCEMAPINTHEENGINEMODELINGISCONSIDEREDANDANEWFANPERFORMANCELINEFITINGMETHODISDEVELOPED3TYPICALCONFIGURATIONSOFGASTURBINEENGINEAREANALYZEDFROMTHEVIEWPOINTOFENERGYANDBASEDONITSRESULTSANEWKINDOFSIMULATIONFRAMEOFGASTURBINEENGINEISPROPOSED4AKINDOFFAULTDETECTIONFILTERISDESIGNEDTOCHECKSOMEFAILUREOFACTUATORSINENGINECONTROLSYSTEMANDDIGITALSIMULATIONAREPRESENTEDTOPROVETHEEFECTIVEOFTHEMETHODKEYWORDSENGINESYSTEMCOMPONENTPERFORMANCELINEFITINGFAULTDIAGNOSISFAULTDETECTIONFILTER

簡介：筮呈大．了UDC密級學(xué)位論文帶輸入飽和的航空發(fā)動機(jī)自適應(yīng)控制作者姓名宋定安指導(dǎo)教師楊光紅教授馬宏軍副教授東北大學(xué)信息科學(xué)與工程學(xué)院申請學(xué)位級別碩士學(xué)科類別工學(xué)學(xué)科專業(yè)名稱控制理論與控制工程論文提交日期2014年6月論文答辯日期2014年6月學(xué)位授予日期2014年7月答辯委員會主席王明順評閱人董久祥黃勝娟東北大學(xué)2014年6月獨(dú)創(chuàng)性聲明本人聲明，所呈交的學(xué)位論文是在導(dǎo)師的指導(dǎo)下完成的。論文中取得的研究成果除加以標(biāo)注和致謝的地方外，不包含其他人己經(jīng)發(fā)表或撰寫過的研究成果，也不包括本人為獲得其他學(xué)位而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均己在論文中作了明確的說明并表示謝意。學(xué)位論文作者簽名系凌S}日期聊仁苦、2，衫學(xué)位論文版權(quán)使用授權(quán)書本學(xué)位論文作者和指導(dǎo)教師完全了解東北大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定即學(xué)校有權(quán)保留并向國家有關(guān)部門或機(jī)構(gòu)送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱。本人同意東北大學(xué)可以將學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進(jìn)行檢索、交流。作者和導(dǎo)師同意網(wǎng)上交流的時間為作者獲得學(xué)位后半年口一年口一年半口兩年彳學(xué)位論文作者簽名案亥L參簽字日期加你衫，況新簽名詆L簽字日期瑚匕良形

簡介：中國科學(xué)院研究生院（長春光學(xué)精密機(jī)械與物理研究所）碩士學(xué)位論文一種航空/航天相機(jī)輸片機(jī)的結(jié)構(gòu)設(shè)計及分析姓名白彥輝申請學(xué)位級別碩士專業(yè)光學(xué)工程指導(dǎo)教師盧鍔20030101中國科學(xué)院長春光學(xué)豐青密機(jī)械與物理研究所碩士學(xué)位論文ABSTRAETSPACECAMERAISONEOFIMPORTANTMETHODSTOOBSERVETHESURFACEOFTHEEARTH，MANYCOUNTRIES，THEREFORE，THINKHI曲LYOFITTHROUGHOUTTHEWORLD．SPACECAMERACONSISTSOFCAMERALENS，SHUT，CAMERABODY,FILMTRANSPORTSYSTEM，CONTROLS”TEMANDSOON，F(xiàn)ILMTRANSPORTSYSTEMASONEOFTHEMOSTIMPORTANTCOMPONENTS，REQUESTSLARGECAPACITYTOCARRYFILM，SHORTCIRCLEWORKINGPERIOD，ANDHIGHDEPENDABILITY．SOFILMTRANSPORTSYSTEM’SWELLORPOORQUALITYDIRECTLYAFFECTSPACECAMERA’SFUNCTION．ITISSONECESSARYTODESIGNHIGHLEVELFILMTRANSPORTSYSTEM．THEOBJECTIVEOFTHISTHESISISTODESIGNANDANALYZEFIXEDQUANTITYINTERMITTENTFILMTRANSPORTS”TEM．THERESEARCHOBJECTHEREISAHI曲LEVELFILMTRANSPORTS”TEMOFSPACECAMERA．MAINCONTENTSAREFOLLOWINGDESIGNANDANALYZEFIXEDQUANTITYINTERMITTENTFILMTRANSPORTSYSTEMWITHTENSIONCONTROL，INVARIANTTENSIONCONTROLSYSTEMINTHEPOINTOFVIEWOFSTRUCTURE；CONDUCTDYNAMICPROPERTYOFFIXEDQUANTITYMEASURINGFILMROLLERANDDEDUCETHEFILM’SDYNAMICPROPERTYANDFILMTENSION．BASEDONFILMTENSIONANALYSES，THEMACHINEOFFILMTENSIONTOBEMEASUREDANDCONTROLLEDDURINGTHEWHOLECOURSEWASDESIGNED；ANDALSOEXPATIATETHEIDEAOFPREVENTINGSCRATCHINGFILMINTHISPAPER；FINALLY，THEEXPERIMENTOFFILMTRANSPORTMACHINEPROVEDITCORRECTLYANDTHISMACHMESATISFIEDSPACECAMERA’STECHNOLOGYSTANDARD．THISPAPERHAVESOMEREFERENCEVALUEINDESIGNINGANDANALYZINGSPACECAMERA’SFILMTRANSPORTSYSTEM．KEYWORDFILMTRANSPORTSYSTEM；FIXEDQUANTITYINTERMITTENTFILMTRANSPORT；TENSIONCONTROL；FILMSUPPLYINGANDWINDINGDEVICE；SPROCKET

簡介：1932了85分類號UDC密級學(xué)位論文航空發(fā)動機(jī)靜子系統(tǒng)振動特性分析作者姓名趙峰指導(dǎo)教師孔祥偉教授東北大學(xué)機(jī)械工程與自動化學(xué)院申請學(xué)位級別碩士學(xué)科類別工學(xué)學(xué)科專業(yè)名稱機(jī)械設(shè)計及理論論文提交日期2008年6月論文答辯日期2008年7月學(xué)位授予日期2008年7月答辯委員會主席謝里陽教授評閱人隋天中副教授王世杰教授東北大學(xué)2008年7月ATHESISINMECHANICALDESIGNANDTHEORY㈣刪㈣㈣Y184醐百岑VIBRATIONCHARACTERISTICSSTUDYONSTATORCASINGSYSTEMOFAEROENGINEBYZHAOFENGSUPERVISORPROFESSORKONGXIAN野VEINORTHEASTERNUNIVERSITYJUIY2008

簡介：南京航空航天大學(xué)碩士學(xué)位論文航空發(fā)動機(jī)視情調(diào)度優(yōu)化方法及系統(tǒng)開發(fā)姓名張濤申請學(xué)位級別碩士專業(yè)交通信息工程及控制指導(dǎo)教師左洪福20090101航空發(fā)動機(jī)視情調(diào)度優(yōu)化方法及系統(tǒng)開發(fā)IIABSTRACTAEROENGINEAIRCRAFTISTHE“HEART“OFTHEAIRCRAFTANDTHESAFETYISCLOSELYRELATEDTO,ATTHESAMETIME,AFFECTTHEAIRLINESOPERATINGCOSTS,HENCETHEREASONABLESCHEDULEPLANSCANBALANCESPAREAEROENGINEQUANTITYOFFLEET,IMPROVERELIABILITYLEVELOFSPAREPART,DECREASETHEQUANTITYOFSPAREAEROENGINEANDREDUCETHEOCCURRENCEOFFLIGHT’SDELAYANDCANCELLATIONBECAUSEOFTHELACKOFSPAREAEROENGINE,THUSHASANIMPORTANTSIGNIFICANCETOREDUCINGCOSTS,RAISINGPROFITS,IMPROVINGTHECOMPETITIVENESSOFTHEAIRLINETHESCHEDULESYSTEMOFAEROENGINEBASEDONCONDITIONALMAINTENANCEISRESEARCHEDANDDEVELOPEDINTHISPAPERITCANPROVIDEAVISUALANDINTERACTIVEFLEETDYNAMICSCHEDULEPLATFORMFORENGINEERINCHARGEOFAEROENGINETHEPRIMARYWORKOFTHEPAPERINCLUDES1THETHEORYFRAMEOFCONDITIONBASEDMAINTENANCEBINDINGSCHEDULEHASBEENSTUDIEDTHESTRATEGYOFCONDITIONBASEDMAINTENANCE,TECHNOLOGYOFPERFORMANCEMONITOR,PERFORMANCEQUEUE,INDICATORSOFAEROENGINEREMOVINGFORECASTANDTHEMETHODOFAEROENGINEREMOVINGFORECASTHASBEENRESEARCHEDINDETAIL,WHICHLAIDASTRONGFOUNDATIONFORADEEPERRESEARCHTOAEROENGINESCHEDULEINTHEFUTURE2SCHEDULEMETHODOFAEROENGINESHASBEENSTUDIEDCLASSICSCHEDULINGMETHODBASEDONSORTRULESHASBEENANALYZEDBYANANALYSISOFEXAMPLESANIMPROVEDMETHODWASINTRODUCEDANDPROVEDVALIDBYTHEANALYSISOFEXAMPLES,WHICHLAIDASTRONGTHEORYFOUNDATIONFORBUILDINGSCHEDULESYSTEMINTHEFUTURE3THEREALIZATIONOFSCHEDULINGSCHEMEOFAEROENGINESHASBEENSTUDIEDB/SMODEWASINTRODUCEDTOREALIZETHESCHEDULINGSCHEMEAFTERANALYZINGTHEPROCESSESOFSCHEDULINGSCHEME,THUSTHEDISPLAYMODULEANDDATAEXCHANGEMODULEWARERESEARCHED,WHICHPROVIDEDASOLUTIONFORTHEDISPLAYOFSCHEDULINGSCHEME“SCHEDULESYSTEMOFAEROENGINE”WASDEVELOPEDUSINGTHEABOVETECHNOLOGIESANDMETHODS,WHICHHASBEENAPPLIEDSUCCESSFULLYINSHANGHAIAIRLINEKEYWORDSAEROENGINE,CONDITIONBASEDMAINTENANCECBM,SCHEDULEALGORITHM,AJAX,J2EE

簡介：電子科技大學(xué)UNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINA碩士學(xué)位論文MASTERTHESIS論文題目基于不確定性的航空發(fā)動機(jī)渦輪盤概率疲勞壽命預(yù)測學(xué)科專業(yè)機(jī)械設(shè)計及理論學(xué)號201021080311作者姓名湯詠指導(dǎo)教師左明健黃洪鐘教授注1注明國際十進(jìn)分類法UDC的類號。

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文航空發(fā)動機(jī)部件性能跟蹤濾波器研究姓名歐陽舟申請學(xué)位級別碩士專業(yè)控制理論與控制工程指導(dǎo)教師樊思齊20040301西北「業(yè)人學(xué)碩二論文ABSTRACTABSTRACTTHISPAPERRESEARCHESTHEENGINECOMPONENTTRACKINGFILTERFORMODELBASEDCONTROLSYSTEMTHEPAPERANALYZESTHESOURCESOFMODELENGINEMISMATCHANDDESIGNSANENGINECOMPONENTTRACKINGFILTERTOMINIMIZEMODELENGINEMISMATCHBASEDONTHEKALMANFILTERINGMETHODSTHEMAINCONTENTOFTHISPAPERISTHEDESIGNAPPROACHFORESTIMATINGENGINECOMPONENTDEVIATIONPARAMETERSTHEESTIMATEPARAMETERSAREUSEDTOTUNETHEEMBEDDEDMODELTOMINIMIZEMODELENGINEMISMATCHBECAUSETHELINEARIZEDENGINEMODELISTIMEINVARIANTITISWELLKNOWNTHATTHEKALMANFILTERGAINMATRIXCONVERGESTOAUNIQUECONSTANTVALUEIFTHESYSTEMISBOTHFULLYOBSERVABLEANDCONTROLLABLEHENCE，THEKALMANFILTERGAINMATRIXCANBECOMPUTEDOFLINEUSINGMATLABTHERESEARCHUSESCOMPENSATINGMETHODTOSOLVEKALMANFILTERINGDIVERGENCEPROBLEMSTHISPAPERINTRODUCEANANALYTICMETHODOFINCORPORATINGSTATEVARIABLEINEQUALITYCONSTRAINSINTHEKALMANFILTERTHEINCORPORATINGSTATEVARIABLEINEQUALITYCONSTRAINSCANIMPROVESTHEESTIMATIONACCURACYANDSTRONGTHEPERFORMANCEOFRESTRAININGTHENOISETHERESEARCHSHOWSTHATTHEENGINECOMPONENTTRACKINGFILTERDESIGNEDINTHISPAPERCANWORKWELLWITHGOODCONVERGENCEKEYWORDSKALMANFILTERENGINEMODELPARAMETERSESTIMATIONTRACKINGFILTER

簡介：南京航空航天大學(xué)碩士學(xué)位論文高壓直流輸入航空靜止變流器DCDC級研究姓名周平森申請學(xué)位級別碩士專業(yè)電力電子與電力傳動指導(dǎo)教師王慧貞20040201高壓直流輸入航空靜止變流器DC／DC級研究ABSTRACTBECAUSEOFMANYATTRACTIVECHARACTERISTICS，SUCHASLOWSWITCHVOLTAGESTRESS，INHERENTANTIBREAKTHROUGHCAPABILITY，HIGHRELIABILITY，TWOTRANSISTORFORWARDCONVERTERTTFCHASBECOMEONEOFTHEMOSTWIDELYUSEDTOPOLOGYTLLISTHESISPRESENTSTHERESEARCHONDC／DCCONVERTERFORHI曲VOLMGEDCHVDCINPUTAERONAUTICALSTATICINVERTERASITHECONVERTERSPRESENTEDARECOMPOSEDOFTHETTFCTOPOLOGYCELLBASEDONCOMPARISONBETWEENTHEPARALLELPARALLELANDPARALLELSERIALCOMBINATIONTTFCANOVELTWOTRANSISTORFORWARDCONVERTERWITLPARALLELSERIAL／SERIALCOMBINATIONISPROPOSEDTHISCONVERTERREDUCESGREATLYTHECURRENTOVERSHOOTOFTHEPRIMARYSIDESWITCHESANDTHEVOLTAGEOVERSHOOTOFTHERECFIFYINGDIODESMOREOVERTHESIZEANDWEIGHTOFTHECONVERTERCANALSOBEREDUCEDBYINTERLEAVINGTECHNIQUEANDINCREASINGFREQUENCYTHEOPERATIONPRINCIPLEANDPARAMETERDESIGNOFPOWERCIRCUITS，LCDCAMPINGCIRCUITSANDCONTROLCIRCUITSAREPROPOSEDANDA6KWPROTOTYPEISSUCCESSFULLYDEVELOPEDANOVELDC／DCTRANSFORMERISPROPOSEDINTHISTHESISTHISCONVERTERNOTONLYRETAINSTHEADVANTAGESOFTTFCBUTALSOHASONLYTWOCAMPINGDIODESMOREOVERTHEPROPOSEDCONVERTEROPERATESATNEARLYUNITYDUTYRATIOFORVERYHIGHEFFICIENCYANDELIMINATESTHEVOLTAGEOVERSHOOTOFTHEOUTPUTRECTIFYINGDIODESTHEOPERATIONPRINCIPLE，OUTPUTCHARACTERISTICS，THECONDITIONOFZVSTURNONOFTHESWITCHESANDPARAMETERDESIGNAREILLUSTRATEDANDTHESIMULATIONANDEXPERIMENTALRESULTSAREALSOINCLUDEDINTHISTHESISKEYWORDSDC／13CCONVERTER，DC／DCTRANSFORMER，TWOTRANSISTORFORWARDCONVERTER，PARALLELSERIALCOMBINATION，INTERLEAVEDCONTR01II

簡介：中國民航大學(xué)碩士學(xué)位論文航空發(fā)動機(jī)內(nèi)窺檢測損傷評估系統(tǒng)研究姓名徐文君申請學(xué)位級別碩士專業(yè)導(dǎo)航、制導(dǎo)與控制指導(dǎo)教師羅云林20070225中回民航天學(xué)碩I‘學(xué)位論文ABSTRACTBORESCOPICINSPECTIONISONEOFTHEMOSTEFFECTIVEMEANSFORAEROENGINEINTERIORSURFACEDEFECTINSPECTIONITAPPLIEDEXTENSIVELYTOTHEAFFEAOFAEMENGINEMAINTENANCETHEDEFECTWHICHISFOUNDDURINGINSPECTIONMUSTBEEVALUATEDCONFIRMTHEINFORMATIONOFDEFECTSUCHASTYPEANDDIMENSIONSOTHATENGINEERSEARLMAKECERTAINTHENEXTSTEPOFMAINTENANCEPROPERDEFECTEVALUATINGCANREDUCEMAINTENANCECOSTINCREASEWORKCYCLES，ANDPROVIDEBASISFORMAKINGSCHEDULEDINSPECTIONCYCLEENSL2MCAEROENGINEPERFORMNORMALLYDURINGINSPECTIONCYCLEATTHEPRESENTTIME，ENGINEERSEVALUATEBORESCOPICINSPECTIONDEFECTDEPENDOLLWORKEXPERIENCEANDLOOKINGUPTHEEVALUATERESULTMANUALLYINAIRCRAFTMAINTENANCEMANUALTHISWAYOFDEFECTEVALUATINGHASTHEDEMERITSOFSUBJECTIVITYLOWPRECISIONANDWASTINGTIME，AIMINGATTHESEDEMEMS，THISPAPERANALYSESCHARACTERISTICSOFAEROENGINEDEFECTSANDDEFECTSEVALUATING，BUILDSDEFECTSEVALUATINGSYSTEMFORAEROENGINEBORCSEOPICINSPECTIONBYAPPLYINGTECHNOLOGYSUCHASDIGITALIMAGEPROCESSINGMODERECOGNITIONSTEREOVISION，EXPERTSYSTEM，ETCTHESYSTEMISCOMPOSEDOFDEFECTRECOGNIZINGMODULE，DEFECTDIMENSIONMEASNRELNENTMODULEANDDEFECTEVALUATINGMODULEFIRSTOFALL，STUDYBORESCOPICINSPECTIONIMAGESEGMENTATIONDEFECTTYPERECOGNIZINGANDDEFECTMEASUREMENTSECONDLYBUILDANEXPERTSYSTEMFORDEFECTEVALUATINGESPECIALLYSTUDYTHEESTABLISHMENTOFKNOWLEDGEBASEANDDESIGNOFREASONINGSTRALCGYTHEFRAMEREPRESENTATIONMETHODANDTHEPRODUCTIONREPRESENTATIONMETHODAREADOPTEDTOEXPRESSTHEFACTKNOWLEDGEANDTHERULEKNOWLEDGEOFDEFECTEVALUATINGTHEKNOWLEDGEBASEISESTABLISHEDANDMANAGEDBYMLATIONDATABASESYSTEMTHEEXPERTSYSTEMADOPTSFORWARDREASONINGMETHODFINALLYDEVELOPSOFTWAREOFTHESYSTEMBYVISUALCANDACCESS2003ANDVALIDATETHESOFTWAREBYININSTANCEKEYWORDSAEROENGINE，BORESCOPICINSPECTIONDEFECTSEVALUATING，EXPERTSYSTEM，VISUALCU

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文X型航空發(fā)動機(jī)神經(jīng)網(wǎng)絡(luò)控制研究姓名劉延峰申請學(xué)位級別碩士專業(yè)控制理論與控制工程指導(dǎo)教師郭迎清20030301西北工業(yè)大學(xué)碩士擘住論文ABSTRACTAEROENGINEWASACONTROHEDOBJECTWIMSUCHFEATURESASCOMPLICATEDWORKINGMECHANISM，CBAZACTEFISFIASVARIEDGREATLY們TLLWORKINGSTATEANDENVIRONMENTCONDITION，F(xiàn)ORSUCHCONTROLLEDOBJECT，CLASSICALFEEDBACKCONTROLTHEORYANDOPTIMALCONUOLTHEORYCANTGUARANTEEOPTIMA／PERFORMANCE．INTHISPAPER,ANWTYPENEURALNETWORKCONSTRUCTIONANDALGORITHMWASSTUDIED．BASEDONTHIS，THENEURALNETWORKWASAPPLIEDASCONTROHCRTOTHESINGLELOOPANDTHEDOUBLELOOPSOFAEROENGINEINSTEADYSTATE．BYTHEWAY,ELEMENTARYSTUDYWASAPPLIEDFORTHE卸靳ENGINETRANSIENTSTATECONTR01．FORCON缸MT，THEFULLPROCESSFORTHECLASSICALPIDCONTROLLERDESIGNANDTHEPARAMETERDETERMINATION、Ⅳ肽GIVEN．BASEDONTHESIMULATIONRESULT，ACONCLUSIONWASDRAWNTHENEURALNETWORKCANSATISFYTHECONTROLREQUIREMENTFORTHESINGLELOOPS￡CADYSTATEUNDERTHEPARAMETERSVARYING．REALIZEDTHEDECOUPLEANDCONTROLREQUIREMENTFORTHEDOUBLELOOPSSTEADYSTATE，THECOUPLINGBETWEENTHEPARAMETERSWASDECOUPLED．FORTHESINGIELOOP括叫鞫耗MSTATECONTROL，THECONTROHERPOSSESSPERFECTUACKINGPERFORMANCE．MOREOVER,THENETWORKCONSTRUCTIONWASSIMPLEANDNORMATIVE，EASYTOBEREALIZED．THESIMULATIONRESULTWASSATISFIEDFORTHETTEROENGINECONTROLSYSTEM、ⅣITLLBROADWORKINGRANGE．KEYWORDLA啪ENGINENEURALNETWORKBPALGORITHMSTEADYSTATECONTROLAEROENGINETRANSIENTCONTROLLI

簡介：航空發(fā)動機(jī)尾噴管壁承受來自高溫燃?xì)獾臒嶝?fù)荷，是發(fā)動機(jī)的高溫部件之一，在巡航狀態(tài)下其紅外輻射強(qiáng)度最高。鑒于磁控等離子體具有降低壁面摩擦阻力和對流傳熱的能力，本文提出運(yùn)用磁控等離子體隔離高溫氣體與噴管壁面，從而減少高溫氣體向壁面的傳熱量，降低噴管壁面溫度，達(dá)到減少紅外輻射強(qiáng)度的目的。另外噴出的等離子體會繼續(xù)包裹尾噴流，起到吸收和散射電磁波的作用。本文對噴管內(nèi)高溫氣體和磁控等離子體的流動和傳熱過程以及等離子體包裹尾噴流的流動特性進(jìn)行了數(shù)值模擬。論文采用誘導(dǎo)磁場方程求解誘導(dǎo)磁場，由安培定律求得誘導(dǎo)電流，從而得到洛侖茲體積力。將反應(yīng)電磁作用的修正項(xiàng)添加到湍流方程中得到修正的湍流兩方程模型，模擬磁場對湍流的影響。運(yùn)用MIXTURE模型處理高溫氣體與等離子體的交界面。運(yùn)用FLUENT程序中的標(biāo)量輸運(yùn)方程求解器求解誘導(dǎo)磁場方程和修正的湍流方程，并很好地模擬出經(jīng)典的哈特曼磁流體流動，從而驗(yàn)證了該程序的可靠性。利用該程序研究了哈特曼數(shù)對等截面噴管內(nèi)等離子體和高溫氣體的速度、溫度、體積分?jǐn)?shù)、湍流強(qiáng)度及壁面溫度的影響。結(jié)果表明磁場能降低高溫氣體對等離子體的摻混，抑制等離子體的湍流，減少高溫氣體向壁面的傳熱量，達(dá)到降低壁面溫度的目的。隨著哈特曼數(shù)增加，壁面摩擦系數(shù)越小，無量綱速度分布偏離對數(shù)律分布的程度越大，噴管壁面溫度上升的幅度也越小。當(dāng)哈特曼數(shù)增加到30時，流動的各向異性變得明顯。在平行磁場平面內(nèi)，努塞爾數(shù)先隨著磁場的增強(qiáng)略有增加，在強(qiáng)磁場作用下又迅速減??；在垂直磁場的平面內(nèi)，努塞爾數(shù)隨磁場增強(qiáng)逐步減小。磁場越強(qiáng)，從噴管中噴出的包裹尾噴流的等離子體的體積分?jǐn)?shù)越大，且對應(yīng)的尾噴流的核心區(qū)長度越小。相對無磁場作用時，哈特曼數(shù)為50時，壁面溫度減小了202％，射流核心區(qū)長度縮短211％。研究了磁控等離子體對軸對稱收縮噴管流動和傳熱的影響。隨著氣流在收縮噴管內(nèi)加速，等離子體被摻混的程度增加，而增強(qiáng)磁場可以提高近壁面處的等離子體體積分?jǐn)?shù)，有效地隔離高溫氣體和收縮噴管壁面。磁控等離子體減小了壁面摩擦損失，提高了噴管的推力系數(shù)。應(yīng)用13T強(qiáng)度磁場時，噴管的推力系數(shù)提高了074％。將等離子體流量從00188KGS提高到00265KGS后，包裹射流的等離子體體積分?jǐn)?shù)提高了24％。