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簡介：、1分類號UDC注1密級1725785學位論文航空器進離場排序系統(tǒng)設計與實現(xiàn)指導教師姓名題名和副題名賴志堅作者姓名職務、職稱、學位、單位名稱及地址申請專業(yè)學位級別碩士專業(yè)學位類別程亟工程領域名稱筮鮭王程提交論文日期2010論文答辯日期2010學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注明國際十進分類法UDC的類號獨創(chuàng)性聲明本人聲明所呈交的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。據(jù)我所知，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或其它教育機構的學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論文使用授權本學位論文作者完全了解電子科技大學有關保留、使用學位論文的規(guī)定，有權保留并向國家有關部門或機構送交論文的復印件和磁盤，允許論文被查閱和借閱。本人授權電子科技大學可以將學位論文的全部或部分內容編入有關數(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應遵守此規(guī)定簽名名咎

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

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

簡介：航空發(fā)動機調節(jié)保護系統(tǒng)多目標控制問題研究MULTIOBJECTIVEREGULATINGPROTECTINGCONTROLFAEROENGINES劉曉鋒劉曉鋒2008年6月CLASSIFIEDINDEXV23513UDC620DISSERTATIONFTHEDOCTALDEGREEINENGINEERINGMULTIOBJECTIVEREGULATINGPROTECTINGCONTROLFAEROENGINESCIDATELIUXIAOFENGSUPERVISPROFYUDARENASSOCIATESUPERVISPROFZHAOJUNACADEMICDEGREEAPPLIEDFDOCTOFENGINEERINGSPECIALTYPOWERMACHINERYENGINEERINGAFFILIATIONSCHOOLOFENERGYSCIENCEENGINEERINGDATEOFDEFENCEJUNE2008DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

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

簡介：筮呈大．了UDC密級學位論文帶輸入飽和的航空發(fā)動機自適應控制作者姓名宋定安指導教師楊光紅教授馬宏軍副教授東北大學信息科學與工程學院申請學位級別碩士學科類別工學學科專業(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2014年6月獨創(chuàng)性聲明本人聲明，所呈交的學位論文是在導師的指導下完成的。論文中取得的研究成果除加以標注和致謝的地方外，不包含其他人己經發(fā)表或撰寫過的研究成果，也不包括本人為獲得其他學位而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻均己在論文中作了明確的說明并表示謝意。學位論文作者簽名系凌S}日期聊仁苦、2，衫學位論文版權使用授權書本學位論文作者和指導教師完全了解東北大學有關保留、使用學位論文的規(guī)定即學校有權保留并向國家有關部門或機構送交論文的復印件和磁盤，允許論文被查閱和借閱。本人同意東北大學可以將學位論文的全部或部分內容編入有關數(shù)據(jù)庫進行檢索、交流。作者和導師同意網上交流的時間為作者獲得學位后半年口一年口一年半口兩年彳學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：中國科學院研究生院（長春光學精密機械與物理研究所）碩士學位論文一種航空/航天相機輸片機的結構設計及分析姓名白彥輝申請學位級別碩士專業(yè)光學工程指導教師盧鍔20030101中國科學院長春光學豐青密機械與物理研究所碩士學位論文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密級學位論文航空發(fā)動機靜子系統(tǒng)振動特性分析作者姓名趙峰指導教師孔祥偉教授東北大學機械工程與自動化學院申請學位級別碩士學科類別工學學科專業(yè)名稱機械設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2008年7月ATHESISINMECHANICALDESIGNANDTHEORY㈣刪㈣㈣Y184醐百岑VIBRATIONCHARACTERISTICSSTUDYONSTATORCASINGSYSTEMOFAEROENGINEBYZHAOFENGSUPERVISORPROFESSORKONGXIAN野VEINORTHEASTERNUNIVERSITYJUIY2008

簡介：南京航空航天大學碩士學位論文航空發(fā)動機視情調度優(yōu)化方法及系統(tǒng)開發(fā)姓名張濤申請學位級別碩士專業(yè)交通信息工程及控制指導教師左洪福20090101航空發(fā)動機視情調度優(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UNIVERSITYOFELECTRONICSCIENCETECHNOLOGYOFCHINA碩士學位論文MASTERTHESIS論文題目基于不確定性的航空發(fā)動機渦輪盤概率疲勞壽命預測學科專業(yè)機械設計及理論學號201021080311作者姓名湯詠指導教師左明健黃洪鐘教授注1注明國際十進分類法UDC的類號。

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

簡介：南京航空航天大學碩士學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位級別碩士專業(yè)電力電子與電力傳動指導教師王慧貞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：中國民航大學碩士學位論文航空發(fā)動機內窺檢測損傷評估系統(tǒng)研究姓名徐文君申請學位級別碩士專業(yè)導航、制導與控制指導教師羅云林20070225中回民航天學碩I‘學位論文ABSTRACTBORESCOPICINSPECTIONISONEOFTHEMOSTEFFECTIVEMEANSFORAEROENGINEINTERIORSURFACEDEFECTINSPECTIONITAPPLIEDEXTENSIVELYTOTHEAFFEAOFAEMENGINEMAINTENANCETHEDEFECTWHICHISFOUNDDURINGINSPECTIONMUSTBEEVALUATEDCONFIRMTHEINFORMATIONOFDEFECTSUCHASTYPEANDDIMENSIONSOTHATENGINEERSEARLMAKECERTAINTHENEXTSTEPOFMAINTENANCEPROPERDEFECTEVALUATINGCANREDUCEMAINTENANCECOSTINCREASEWORKCYCLES，ANDPROVIDEBASISFORMAKINGSCHEDULEDINSPECTIONCYCLEENSL2MCAEROENGINEPERFORMNORMALLYDURINGINSPECTIONCYCLEATTHEPRESENTTIME，ENGINEERSEVALUATEBORESCOPICINSPECTIONDEFECTDEPENDOLLWORKEXPERIENCEANDLOOKINGUPTHEEVALUATERESULTMANUALLYINAIRCRAFTMAINTENANCEMANUALTHISWAYOFDEFECTEVALUATINGHASTHEDEMERITSOFSUBJECTIVITYLOWPRECISIONANDWASTINGTIME，AIMINGATTHESEDEMEMS，THISPAPERANALYSESCHARACTERISTICSOFAEROENGINEDEFECTSANDDEFECTSEVALUATING，BUILDSDEFECTSEVALUATINGSYSTEMFORAEROENGINEBORCSEOPICINSPECTIONBYAPPLYINGTECHNOLOGYSUCHASDIGITALIMAGEPROCESSINGMODERECOGNITIONSTEREOVISION，EXPERTSYSTEM，ETCTHESYSTEMISCOMPOSEDOFDEFECTRECOGNIZINGMODULE，DEFECTDIMENSIONMEASNRELNENTMODULEANDDEFECTEVALUATINGMODULEFIRSTOFALL，STUDYBORESCOPICINSPECTIONIMAGESEGMENTATIONDEFECTTYPERECOGNIZINGANDDEFECTMEASUREMENTSECONDLYBUILDANEXPERTSYSTEMFORDEFECTEVALUATINGESPECIALLYSTUDYTHEESTABLISHMENTOFKNOWLEDGEBASEANDDESIGNOFREASONINGSTRALCGYTHEFRAMEREPRESENTATIONMETHODANDTHEPRODUCTIONREPRESENTATIONMETHODAREADOPTEDTOEXPRESSTHEFACTKNOWLEDGEANDTHERULEKNOWLEDGEOFDEFECTEVALUATINGTHEKNOWLEDGEBASEISESTABLISHEDANDMANAGEDBYMLATIONDATABASESYSTEMTHEEXPERTSYSTEMADOPTSFORWARDREASONINGMETHODFINALLYDEVELOPSOFTWAREOFTHESYSTEMBYVISUALCANDACCESS2003ANDVALIDATETHESOFTWAREBYININSTANCEKEYWORDSAEROENGINE，BORESCOPICINSPECTIONDEFECTSEVALUATING，EXPERTSYSTEM，VISUALCU

簡介：西北工業(yè)大學碩士學位論文X型航空發(fā)動機神經網絡控制研究姓名劉延峰申請學位級別碩士專業(yè)控制理論與控制工程指導教師郭迎清20030301西北工業(yè)大學碩士擘住論文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)動機尾噴管壁承受來自高溫燃氣的熱負荷，是發(fā)動機的高溫部件之一，在巡航狀態(tài)下其紅外輻射強度最高。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，達到減少紅外輻射強度的目的。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行了數(shù)值模擬。論文采用誘導磁場方程求解誘導磁場，由安培定律求得誘導電流，從而得到洛侖茲體積力。將反應電磁作用的修正項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。運用MIXTURE模型處理高溫氣體與等離子體的交界面。運用FLUENT程序中的標量輸運方程求解器求解誘導磁場方程和修正的湍流方程，并很好地模擬出經典的哈特曼磁流體流動，從而驗證了該程序的可靠性。利用該程序研究了哈特曼數(shù)對等截面噴管內等離子體和高溫氣體的速度、溫度、體積分數(shù)、湍流強度及壁面溫度的影響。結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，努塞爾數(shù)先隨著磁場的增強略有增加，在強磁場作用下又迅速減?。辉诖怪贝艌龅钠矫鎯?，努塞爾數(shù)隨磁場增強逐步減小。磁場越強，從噴管中噴出的包裹尾噴流的等離子體的體積分數(shù)越大，且對應的尾噴流的核心區(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加速，等離子體被摻混的程度增加，而增強磁場可以提高近壁面處的等離子體體積分數(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)。應用13T強度磁場時，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數(shù)提高了24％。