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簡介：上海交通大學(xué)碩士學(xué)位論文典型航天產(chǎn)品電子束焊接變形預(yù)測與控制姓名吳飛申請學(xué)位級別碩士專業(yè)材料加工工程指導(dǎo)教師陸?zhàn)?0040101PREDICTIONCONTRALOFTHEDEFMATIONOFELECTRONBEAMWELDINGONTYPICLEAEROWKPIECESABSTRACTFIRSTLYSEVERALNUMERICALMETHODSOFPREDICTINGWELDINGDEFMATIONARECOMPAREDBASICTHEYPROPERTYAPPLICABILITYOFEACHNUMERICALMETHODAREDISCUSSEDTHEMECHANICSOFWELDINGDEFMATIONISALSODISCUSSEDINTHISPAPERTHETHERMOELASTICPLASTICFEMISPAIDMEATTENTIONTOINTHETHESISTAKINGINTOACCOUNTTHEGEOMETRICALDIMENSIONSMATERIALSPROPERTIESHEATDISTRIBUTIONTHEMESHASERIESOFTHINCYLINDERISCREATEDFELECTRONBEAMWELDINGEBWAFTERCOMPARISONRULESAREGIVENOUTTODETERMINEEACHFACTTHEEFFECTOFTHELATENTHEATOFFUSIONMOLTENMETALISRESEARCHEDINTHISPAPERTHEAPPLICABILITYOFTHEINHERENTSTRAINMETHODISDISCUSSEDFEBWONTHINCYLINDERSTHEVALUEOFKCM3JINTHEEQUATIONOFWXKQVTOGETHERWITHTHEVALUEOFCM3JINTHEEQUATIONOFWYQVAREGIVENFEBWCOMPUTATIONFCYLINDERSOFDIFFERENTMATERIALSDIFFERENTSIZESSHOWSTHATISACONSTANTVALUEFEBWONTHINCYLINDERKISAFFECTEDBYTHERADIUSOFCYLINDERSBASEDONTHERMOELASTICPLASTICFEMTHEPREDEFMATIONPROCESSISSIMULATEDAMETHODISGIVENTODETERMINEPREDEFMATIONVALUESOMEADVICESAREGIVENTOIMPROVECURRENTPREDEFMATIONPROCESSATLASTTHECOOLINGEFFECTOFTHEFIXERTHEEFFECTOFSKIPWELDINGAREEVALUATEDBYNUMERICALANALYSIS

簡介：哈爾濱工程大學(xué)碩士學(xué)位論文小型航空發(fā)動機傳感器容錯控制技術(shù)研究姓名劉漢斌申請學(xué)位級別碩士專業(yè)控制工程指導(dǎo)教師蘭海；何保成20111104哈爾濱工程大學(xué)碩士學(xué)位論文II

簡介：航天遙測數(shù)據(jù)實時存儲及可視化系統(tǒng)設(shè)計與實現(xiàn)重慶大學(xué)碩士學(xué)位論文（專業(yè)學(xué)位）學(xué)生姓名邱翊峰指導(dǎo)教師柴毅教授兼職導(dǎo)師王剛高工學(xué)位類別工程碩士（控制工程）重慶大學(xué)自動化學(xué)院二O一七年四月DESIGNIMPLEMENTATIONOFREALTIMESTAGEVISUALIZATIONSYSTEMFAERIALTELEMETRYDATAATHESISSUBMITTEDTOCHONGQINGUNIVERSITYINPARTIALFULFILLMENTOFTHEREQUIREMENTFTHEPROFESSIONALDEGREEBYQIUYIFENGSUPERVISEDBYPROFCHAIYIPLURALISTICSUPERVISEDBYSENIENGWANGGANGSPECIALTYMECONTROLENGINEERINGCOLLEGEOFAUTOMATIONOFCHONGQINGUNIVERSITYCHONGQINGCHINAAPRIL2017

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簡介：中南大學(xué)碩士學(xué)位論文航空發(fā)動機軸間密封CC復(fù)合材料的制備及摩擦磨損特性研究姓名彭春蘭申請學(xué)位級別碩士專業(yè)材料學(xué)指導(dǎo)教師易茂中20020101ABSTRACTTHESEALRINGISTHECRITICALPARTFBRTHESEALINGOFTHEMAINAXISOFAEROPLANEENGINEACCORDIⅡGTOTHEREQUIREMEⅡTOFAPPLYINGCONDITIONS，ITMUSTHAVEHIGHSTRENGTH，EXCELLENTOXIDATIONRESISTANCEANDLOWCOEFFICIENTOFFRICTIONANDWEARRATIOTHECARBONCARBOⅡCOMPOSITESWEREFABRICATEDANDTHEIRPROPERTIESWEREANALYZEDWHAT’SMORE，F(xiàn)RICTIONANDWEARPROPERTIESOFTWOTYPESOFMATERIALS，CARBONCARBONCOMPOSITEANDHIGHSTREⅡGTHGRAPHITEW血ICHWASSUPPOSEDTOBEUSEDASTHESEALRINGOFTHEMAINAXISOFAEROPLANEENGINE，WEREINVESTIGATEDACCORDIⅡGTOTHEREQUIREMENTOFAPPLYINGCONDITIONSANDPFOPERTIESOFTHESEAL“ⅡGOFTHEMAINAXISOFAEROPLANEENGINE，PREFBRMSWEREDESIGNEDINTOTHESUBSTRATETHATTHECARBONCLOTHANDFELTALTERNATELYWEREWINDEDAROUⅡDTHECYLIⅡDERAⅡDTHENNEEDLEDWITHCARBONFIBERINTHERADIALDIRECTIONANDTHEOTHER3一DWEAVIⅡGSUBSTRATETBREINFBRCETHEFIBREANDTHEMATRIXCONNECTING，PREFORMSWEREDENSIFIEDBYCVDFIRSTLYTHEPYROLYTICCARBOⅡWITHRL／SLSTRUCTUREORSLSTRUCTUREWASOBTAINEDAFTERTHATTHEMATERIALSWEREFURTHERDENSIFIEDWITHRESINANDHEATTREATEDAT2L00℃THESTRENGTH觚DWEARRESISTANCEWASIMPROVED，ANDTHERESINWOULDGUARANTEETHESEALINGEFFECTAFTERHEATTREATMENT，THEDEGREEOFGRAPHITIZATIONOFTHEMATERIALSWASABOUT30～50％，ANDTHEDEGREEOFGRAPHITIZATIONOFMATERIALL6拌WASAMOUNTT0471％THEHARDNESSOFTHE3DPREFBRMMATERIALWASCLOSEINTHERADIALANDCIRCUMAMBIENTDIRECTIONBUTTHEHARDNESSOFTHEOTHERPREFORMWASALMOSTANISOTROPICTHETHERMALCONDUCTIVITYWASALSOANISOTROPICTHECOEFFICIENTOFTHERMALEXP蚰SIONDECREASEDWITHTHETEMPERATUREINCREASEDWHEN400℃，ITWASATTHEBOTTOM，鋤DWHEⅡTO500℃，ITINCREASEDANDTHEMECHANICALPROPERTYOFCARBONCARBONCOMPOSITEWASPSEUDOPLASTICBYSTUDYINGFICTIOⅡANDWEAROFTHECARBONCARBONCOMPOSITEANDIT

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簡介：西北工業(yè)大學(xué)碩士學(xué)位論文某型航空螺旋離心泵性能計算研究姓名何海強申請學(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20040301ABSTRACTFUELPUMPANDLUBEPUMPUSEDINPRESENTAEROENGINEANDSPACEENGINEAREORIENTEDTOSMALLERVOLUME，BIGGERFLUXANDHIGHERPRESSURETHEYDIFFERSMUCHFROMTHETRADITIONALHYDRAULICELEMENTBOTHINMECHANICSANDINPRINCIPLETHEFRESHTHOUGHTANDCUTEMETHODUSEDINTHESEPUMPSMAKETHEMWORKBETTERANDCONTRIBUTEMORETOTHEOPERATIONOFTHERULESYSTEMTHUS，ITISOFMUCHINDISPENSABILITYTOFINDOUTTHENEWIDEASANDEXCLUSIVEMECHANICSSTRUCTUREANDPERFORMANCEOFASCREWCENTRIFUGALPUMPUSEDINAEROENGINEWASDISCUSSEDINTHISPAPERANDTHECALCULATIONMETHODOFTHEPUMP’SPERFORMANCEWASALSOGIVENOUTTHEPAPERBEGINSWITHTHEDISCUSSIONOFTHEOPERATINGPRINCIPLEANDFUNCTIONOFTHESCREWINDUCERSPECIALELEMENTOFTHEPUMP，ANDTHENGIVESTHEDEFINITIONANDRELATIONSHIPOFTHEPARAMETERSANDTHECURVEFUNCTIONOFTHEINDUCERASWELL，WHICHISOFGREATIMPORTANCETODATAANALYZINGANDPUMPMANUFACTURINGBYPRESENTINGTHESIMPLIFIEDFLOWMODEL，THEFLOWANDVELOCITYTRIANGLESWEREANALYZEDTNTHEPAPERTHEAUTHOREXCAVATEDTHEPERFORMANCE，CALCULATEDTHEVELOCITY，PRESSUREANDFLOWLOSSOFTHEWORMSHELL，THEOUTLETELEMENTOFTHEPUMPACCORDINGTOTHECOMMONMETHODOFTHEPERFORMANCECALCULATIONOFCENTRIFUGALPUMP，THEAUTHORCALCULATEDTHEHEADANDPOWEROFTHEPUMP，SHOWEDTHEWAYTOGETTHEPRESSUREOFTHEOUTLETANDTHEAUTHORALSOINDICATEDTHEIMPACTOFTHESTRUCTUREPARAMETERSANDTHUSGUIDEDTHEDESIGNOFTHEPUMPTHERESULTSSHOWTHATTHESCREWCENTRIFUGALPUMPISATYPEOFWELLWORKINGPUMPWITHGOODPERFORMANCE，ITHASHIGHERHEADANDEFFICIENCYWITHBETTERABILITYOFANTIEROSIONBOTHTHEPARAMETERSANDTHEWORKINGCONDITIONCANAFFECTTHEPUMP’SOPERATIONANDPERFORMANCEDIRECTLYITISAUSEFULWAYTOCHANGETHESEPARAMETERSTOMEETTHENEEDOFTHEENGINEERING【KEYWORDS】SCREWCENTRIFUGALPUMP；SCRE％VINDUCER；WORMSHELLPERFORMANCECALCULATION

簡介：碩士學(xué)位論文士學(xué)位論文航空遠距離傾斜攝影相機掃描穩(wěn)像及像移補償技術(shù)研究RESEARCHONSCANNINGMOTIONCOMPENSATIONOFAIRBNECAMERAFLONGRANGEOBLIQUEPHOTOGRAPHY李福東李福東哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2015年7月CLASSIFIEDINDEXV2435UDC6213DISSERTATIONFTHEMASTERDEGREEINENGINEERINGRESEARCHONSCANNINGMOTIONCOMPENSATIONOFAIRBNECAMERAFLONGRANGEOBLIQUEPHOTOGRAPHYCIDATELIFUDONGSUPERVISPROFGUANYINGZIACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALITYSPACECRAFTDESIGNAFFILIATIONSCHOOLOFASTRONAUTICSDATEOFDEFENCEJULY2015DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：中國民用航空學(xué)院碩士學(xué)位論文BP網(wǎng)絡(luò)與航空發(fā)動機模型在間隙對性能影響研究中的應(yīng)用姓名馬曉剛申請學(xué)位級別碩士專業(yè)航空宇航推進理論與工程指導(dǎo)教師白杰李書明20040110中國民用航空學(xué)院碩士學(xué)位論文ABSTRACTTHISPAPEROPTIMIZEDANDANALYZEDTHEDATAOFASSEMBLYTOLERANCESINTEGRATEDWITHTHEFACTDURINGAEROENGINEMAINTENANCE，ANDASSEMBLEDAMODELTORESEARCHTHERELATIONSHIPBETWEENTHETOLERANCESOFKEYENGINECOMPONENTSINCLUDINGTIPCLEMANCESOFROTATINGCOMPONENTSANDENGINEPERFORMANCETHROUGHTHECOMBINEDUSEOFBPARTIIKIALNEURALNETWORKANDCONVENTIONALTHEORETICMODELOFAEROENGINEINTHERESULTOFTHISPAPER，SOMERULESAREGIVENTOOUTLINETHESERELATIONSHIPSTHATISVERYUSEFULTOCONTROLTHEASSEMBLYTOLERANCESANDACHIEVEHIGHLEVELSOFENGINEPERFORMANCEAFTERSERVICINGDATAOFASSEMBLYTOLERANCESDISCUSSEDINTHISPAPERARESTATICTOLERANCEBEFORETESTANDEMPHASIZEPARTICULARLYOILINVESTIGATINGTHERELATIONSHIPBETWEENCLEARANCESOFASSEMBLYBLADESANDTHEENGINEPERFORMANCEBESIDES，BPARTIFICIALNEURALNETWORKANDWORKINGCONDITIONEQUATIONOFTHEENGINEAREADOPTEDINTHISPAPERTOFORECASTTHEEFFECTOFTIPCLEARANCEONPARAMETERSOFENGINESUCHASEFFICIENCYOFPRESSURECOMPRESSOGEFFICIENCYOFTURBINE，THETEMPERATUREINTHEFRONTOFTURBINEANDEXHAUSTGASTEMPERATUREBECAUSEOFTHELIMITATIONOFTHEANALYTICALMETHODOFMATHEMATICS，THERELATIONSHIPOFTOLERANCERECORDEDDURINGMAINTAININGANDENGINEPERFORMANCEDESCRIBEDINTHISPAPERCORRESPONDSTOTHESPECIFICSERVICINGCONDITIONANDMODELBUTTHEMETHODCANAPPLYTODEALWITHOTHERENGINEMODELTHEDATAINTHISPAPERARECOLLECTEDFROMACIVILTURBINEFANENGINEWITHAFAN，TWOAXIALCOMPRESSORS，ANAXIALHIGHPRESSURETURBINEHPRLL，ANDANAXIALLOWPRESSURETURBINELPTCANREPRESENTCOMMONMODELTHROUGHANALYZINGINTHISPAPERWEVERIFIEDTHATTIPCLEARANCESAFFECTSENGINEPERFORMANCEANDOPERABILITYATTHESAMETIMESOMEOTHERTOLERANCESHAVEEFFECTSTOENGINEPERFORMANCESOMECONCLUSIONDRAWNINTHISRESEARCHCANOFFERREFERENCETELEVANTRESEARCHERFINALLY，ANAPPLICATIONPROGRAMPW4000ASSEMBLYTOLERANCESANDENGINEPERFORMANCEANALYSISSYSTEMWASDEVELOPEDINVCLANGUAGEANDODBCDATABASETHROTLGHANALYSISANDPREDICTIONEMPLOYEDTHISSYSTEMTHEVALIDITYOFTHERESEARCHAPPROACHESINTHISPAPERWASVERIFIEDKEYWORDSAEROENGINE，PERFORMANCE，TOLERANCE，BPANN

簡介：碩士學(xué)位論文碩士學(xué)位論文基于貝葉斯網(wǎng)絡(luò)的航天器健康管理系統(tǒng)THESPACECRAFTHEALTHMANAGEMENTSYSTEMBASEDONBAYESIANWKS張力元張力元哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2015年6月CLASSIFIEDINDEXV467UDC681513DISSERTATIONFTHEMASTER’SDEGREEINENGINEERINGTHESPACECRAFTHEALTHMANAGEMENTSYSTEMBASEDONBAYESIANWKSCIDATEZHANGLIYUANSUPERVISASSOCIATEPROFYIGUOXINGACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALITYCONTROLSCIENCEENGINEERINGAFFILIATIONSCHOOLOFASTRONAUTICSDATEOFDEFENCEJUNE2015DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：合肥工業(yè)大學(xué)碩士學(xué)位論文航空軸承性能試驗測試控制系統(tǒng)的研制姓名劉蘇亞申請學(xué)位級別碩士專業(yè)機械工程指導(dǎo)教師尹志強徐同申20040401THERESEARCHINGANDMANUFACTURINGOFCONTR0IIINGANDTESTSYSTEMFORAVIATIORBERINGTESTERABSTRACTTHEAVIATIONBEARING‘‘661701”ISDEVELOPEDASINTERVENINGBEARINGWHICHISALSOCALLEDONEWAYBEARINGOFAVIATIONENGINEFORTHE608RESEARCHINSTITUTEOFAVIATIONINDUSTRYBYLUOYANGBEARINGSCIENCEANDTECHNOLOGYCD．，LTD．THEPERFORMANCEOFTHEBEARINGISDIRECTLYASSOCIATEDWITHTHESTARTUP．THEREFOR，ITISVERYIMPORTANTTOTESTTHEONEWAYBEARING“66I701”。TWOELECTRICSPINDLESAREUSED，ONESIMULATESTHESTARTERMOTOR，THEOTHERSIMULATESENGINETODRIVEBEARING．INTHETEST，THESPEEDOFREVOLUTION，TEMPERATURE，OILSUPPLYPRESSUREANDOTHERPARAMETERAREMEASUREDBYTHEINDUSTRYCONTROLCOMPUTER。ATTHESAMETIME，ITDETAILEDDEMONSTRATEANDCARRYOUTTHEWAY，WHICHAPPLYHOUSINGELECTRICSPINDLESATGENERATIONSTATETOCARRYOUTHOUSINGTOQUELOADINGINTHEJOINTTESTINGANDINDIRECTLYESTIMATIONHOUSINGTORQUELOADINGBYTHEELECTROMAGNETISMTORQUEOFINNERTUBEELECTRICSPINDLES．THUS，THETECHNICALPROBLEMTHATTHEHIGHSPEEDSHAFTINGTORQUELOADINGDEVICEANDTORQUESENDERAREDIFFICULTTOINSTALLISSOLVEDANDITSAVESASETOFEXPENSIVEHIGHSPEEDSHAFTINGTORQUELOADINGANDMEASURINGDEVICE．THEOUTCOMEFILLTHEBLANKINTHEDOMESTICFIELDOFTORQUELOADINGFORHIGHSPEEDONEWAYBEARINGTEST．ANDITREACHESADVANCEDLEVELINOURCOUNTRY。THEPARAMETRICSELFADJUSTINGONLINEINTERPOLATIONFUZZYCONTROLISFORMEDBYTHEAPPLYINGPRACTICALINTERPOLATIONMETHODANDPARAMETRICSELFADJUSTINGMETHODTOROUTINEFUZZYCONTROLSYSTEMTHESYSTEMLOWERTHESTATICERRORANDAVOIDTHEFLUTTEROFROUTINEFUZZYCONTROLLER．THESIMULATIONRESULTSPROVETHATTHISSYSTEMHASRAPIDDYNAMICRESPONSESPEEDANDHIGHSTEADYSTATE，ASWELLASGOODFOLLOWINGCAPABILITYANDSTRONGROBUSTNESS．

簡介：華中科技大學(xué)博士學(xué)位論文航天繼電器觸簧系統(tǒng)接觸彈跳及其影響因素研究姓名熊軍申請學(xué)位級別博士專業(yè)電氣工程指導(dǎo)教師何俊佳20081107II最后，本文針對某型航天繼電器的觸頭彈跳模型進行校驗，利用ANSYS建立其電磁系統(tǒng)模型結(jié)合ADAMS建立的接觸系統(tǒng)模型進行觸頭彈跳的動力學(xué)仿真，并與理論計算結(jié)果和實驗結(jié)果進行比較，以驗證模型的有效性。關(guān)鍵詞航天繼電器觸簧系統(tǒng)接觸彈跳多體動力學(xué)理論激光三角原理

簡介：東南大學(xué)碩士學(xué)位論文加強政府航空安全管理對策研究姓名陳忠躍申請學(xué)位級別碩士專業(yè)公共管理指導(dǎo)教師袁久紅20110930ABSTRACTTITLETHESTRATEGYFORTHEGOVERNMENTTOSTRENGTHENAVIATIONSAFETYMANAGEMENTNAMECHENZHONGYUESUPERVISORYUANJIUHONGUNIVERSITYSEUSOUTHEASTUNIVERSITYALONG霄ITHTHERAPIDDEVELOPMENTOFCIVILAVIATIONINDUSTRYOFCHINA。THEDEMANDOFAIRTRANSPORTHASBEENDRAMATICALLYINCREASINGTHECONFLICTBETWEENTHERAPIDGROWTHOFTHEFLIGHTTRAFFICANDTHERELATIVELYWEAKSAFETYBASISISMORESERIOUSTHISPAPERFIRSTANALYZESTHEPRESENTSITUATION8NDCHARACTERISTICSOFTHECIVILAVIATIONSAFETYMANAGEMENTTHENFROMTHESTATISTICALANALYSISOFTHECRASHINTHEPASTTWODECADES，WEOBTAINTHEMAINMANAGEMENTFACTORSFORAVIATIONSAFETYBASEDONTHEABOVEMANAGEMENTFACTORS，霄EANALYZESTHEMAINSECURITYMANAGEMENTPROBLEMSINTHEAVIATIONINDUSTRYFROMTHEPLANNING，ORGANIZATIONCOORDINATIONANDCONTROLFUNCTIONSWEPROVETHATTHE90VER咖ENTNEEDENHANCETHEAVIATIONSAFETYMANAGEMENTFROMSCIENTIFICPLANNING。MACROCONTROL，INSTITUTIONALCHANGE，STRENGTHENINGPRODUCTIONSAFETYRESPONSIBILITY，STRENGTHENINGEMERGENCYMANAGEMENTANDSOONTHEGOVERNMENTISTHEMOSTIMPORTANTAVIATIONSAFETYREGULATORTHISARTICLEPROVIDESTHESTRATEGYFORTHEGOVERNMENTSTRENGTHENINGAVIATIONSECURITYMANAGEMENTTHESTUDYPROVIDESAGOODREFERENCEFORTHEGOVERNMENTTOENHANCETHEAVIATIONSAFETYMANAGEMENTKY的RD8GOVER珊ENT；CIVILAVIATION；SAFETY艙NAGEMENT№NAGEMENTSYSTEM

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文基于隨機PETRI網(wǎng)的航空電子綜合系統(tǒng)數(shù)據(jù)總線建模分析姓名耿修堂申請學(xué)位級別碩士專業(yè)系統(tǒng)工程指導(dǎo)教師吳勇20040301西北工業(yè)大學(xué)碩卜論文基于隨機PETRI網(wǎng)的航空電F綜合系統(tǒng)數(shù)據(jù)總線的建模分析ABSTRACTTHETHESISCONTENTISMODELLINGANDANALYSISOFINTEGRATEDAVIONICSSYSTEMDATABUSWITHSTOCHASTICPETRINETTHEPURPOSEISOPTIMIZINGBUSTRANSMISSIONSYSTEMBYTHEANALYSISOFINTEGRATEDAVIONICSSYSTEMDATABUSCAPABILITYPARAMETERUTILIZINGTIMEDPETRINETSTOCHASTICPETRINETMODELLINGTOOLANDCOMPUTERTOOLSIMULATINGANDANALYZINGINTEGRATEDAVIONICSSYSTEMDATABUSANDATTAININGSYSTEMTIMECAPABILITYPARAMETERARETHESTUDYINGMETHODOFTHETHESISASARESULTOFSTUDYINGWEGAINTHREESYSTEMTIMECAPABILITYPARAMETEROFMONOLAYERBUSFRAMEWORKANDTWODOUBLEBUSFRAMEWORKDATABUSUTILIZATIONLENGTHOFTHEDATAWAITINGQUEUEANDTIMEOFSYSTEMTIMEDBASINGONFIXEDBCCONTROLSEASONALREPERTOIRETIMEDPETRINETANDSTOCHASTICPETRINETWEALSOTAKETWOCONCLUSIONSBYFOREGOINGRESULTFIRSTOFALLTHESYSTEMBECOMESMOREANDMORECOMPLEXTHESYSTEMDATABUSUTILIZATIONCOPYRESULTTIMEOFSYSTEMTIMEDANDLENGTHOFTHENEWSWAITINGQUEUEBECOMEMOREANDMOREPRECISEBASINGONSTOCHASTICPETRINETATTHESAMETIMETHEMODELISVISUALVIVIDCONCISEANDCURRENTSECONDLYWHENITISTWODOUBLEBUSFRAMEWORKTHEUTILIZATIONOFDATABUSANDLENGTHOFTHEDATAWAITINGQUEUEWILLFALLQUICKLYKEYWORDSINTEGRATEDAVIONICSSYSTEMSTOCHASTICPETRINET1553BDATABUSTIMEDPETRINET

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文航空高壓直流稀土永磁無刷電機控制技術(shù)研究姓名梅彥平申請學(xué)位級別碩士專業(yè)電機與電器指導(dǎo)教師馬瑞卿20050301西北工業(yè)大學(xué)碩士學(xué)位論文ABSTRACTABSTRACTRESPONDTOTHEREQUIREMENTOFANAVIATIONDEPARTMENTTHESPEEDCONTROLTECHNIQUESANDTHERELATIVEAPPLIANCETECHNIQUESOFRAREEARTHPERMANENTMAGNETBRUSHLESSDCMOTORBLDCMWHICHWORKSFORTHENEWHIGHVOLTAGEPOWERSUPPLYSYSTEMOFPLANEISRESEARCHEDINTHISPAPERTHEPAPERMAINLYINCLUDESTHREEPARTSFIRSTBASEONTHECOMPREHENSIVEANALYSISANDSTUDYABOUTTHESTRUCTUREPRINCIPLESANDCONTROLRULESOFBLDCMOTORCONTROLSYSTEMITSCONTROLMETHODTHATUSEDFORHVDCSYSTEMISRESEARCHEDINORDERTEALIZETHEMOTORS“SOFTSTART“ANIDEALSTARTPROCESSIONASOFTWAREPROGRAMANDASTRATEGYOFSPEEDANDCURRENTDOUBLECLOSELOOPCONTROLSYSTEMTIMETHESPEEDAREINTRODUCEDTOLIMITITSSTARTCURRENTATTHESAMECLOSELOOPSYSTEMARESIMULATEDSECONDDEPENDONTHESTUDYOFTHEPRINCIPLESANDTECHNIQUESOFTHEMINIATUREHIGHFREQUENCYSINGLEENDEDFLYBACKSWITCHINGPOWERSUPPLYESPECIALLYTHEPRINCIPLESOFTHESINGLECONTROLCHIPOFSWITCHINGPOWERSUPPLYTOP224YANDTHECALCULATIONANDDESIGNOFHIGHFREQUENCYTRANSFORMER，ASWITCHINGPOWERSUPPLYWHOSECONTROLCHIPISTOP224YISDESIGNEDWHICHACCOMPLISHTHEPOWERTRANSFORMATIONFROM270VDCTO5VDCAND15VDCINTHEMEANINGTIMETHEPROBLEMOFEMCISRESEARCHEDANDSOMEMETHODSTOREDUCETHEINFLUENCESOFEMCAREPUTFORWARDLASTBASEONALLTHOSERESEARCHESABOVEACONTROLLERWHICHUSETHEMICROCONTROLLERCHIPAT89C51ISDESIGNEDITUSESTHESIGNALSTHATCOMEFROMTHEROTORPOSITIONSENSORTOGETTHEMOTORSSPEEDINDIRECTLYANDUSESSOFTWARETOACCOMPLISHTHESIGNALSOFPWMWAVEANDTHESTRATEGYOFSPEEDCLOSELOOPCONTROLTHESIMULATIONABOUTTHECONTROLTHEORYISVERIFIEDBYTHEEXPERIMENTTHISCONTROLLERGUARANTEESTHEMOTORWORKSIN4KINDSOFPATTERNSSAFELYANDTHEWORKSSTABILITYISENSUREDTHROUGHSEVERALKINDSOFANTIDISTURBANCETECHNIQUESTHEEXPERIMENTRESULTSSHOWSTHATTHESWITCHINGPOWERSUPPLYPROVIDEAPERFECTQUALITYPOWERFORTHECONTROLLERTHEMOTORSSPEEDCANBESTABILIZEDORADJUSTEDINCESSANTLYIN4KIND