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簡介：西北工業(yè)大學(xué)碩士學(xué)位論文航空電源故障特征提取與故障診斷研究姓名黃根全申請學(xué)位級別碩士專業(yè)控制理論與控制工程指導(dǎo)教師張涇周20050301西北工業(yè)大學(xué)碩士學(xué)位論文AIRCRAFTELECTRICPOWERSOURCESYSTEMAEPSSISANIMPORTANTEQUIPMENTTRANSFORMINGTHEENGINEENERGYTOELECTRICENERGYFORALLELECTROEQUIPMENTSINAIRPLANEITSRIGHTWORKINGSTATEISAKEYTOENSURENORMALANDSECURERIGHTOFAIRPLANECONDITIONDETECTIONANDFAULTDIAGNOSISISAMAINRESEARCHINFIELDOFAIRCRAFTELECTRICPOWERSOURCESYSTEMAIRCRAFTELECTRICPOWERSOURCEISUSUALLYCONSTITUTEDBYTHREEGRADESOFGENERATORBUTITISDIFFICULTTOBUILDFAULTMODELFORITSCOMPLEXITYSTRUCTUREATPRESENTEXAMINEANDREPAIRONTHEGROUNDDEPENDSONSOMETRADITIONALINSTRUMENTSANDROUTINEEXAMINEWHOSEDISADVANTAGESAREFEWINSPECTINGITEMSANDLOWEFICIENCYTHISOFLINETESTINGMETHODCANNOTEXACTLYGETIMPORTANTSTATESANDPARAMETERSOFFAULTSINTHISPAPERACONDITIONDETECTIONANDFAULTDIAGNOSISSYSTEMSIMULATING“ONLINE“ONTHEGROUNDOFTHEAIRCRAFTELECTRICPOWERSOURCESYSTEMISDESIGNEDWHICHBASEDONMULTISENSORINFORMATIONFUSIONTECHNIQUEANALYZEDTHREEKINDSOFFAMILIARELECTRICFAULTSOFAIRCRAFTELECTRICPOWERSOURCEGENERALINSPECTINGITEMSARECONFIRMEDFORDIFFERENTDATAOFMULTISENSORDIFERENTSIGNALPROCESSINGMETHODSEXTRACTFAULTFEATURESANDIMPROVESNRTHEFOUNDATIONOFFAULTFEATUREDATABASEPROVIDESAGOODBASEFORFAULTDIAGNOSISANDCLASSIFYINGEVIDENCEREASONINGISUSEDINFAULTDIAGNOSISANDCLASSIFYINGOFTHEAIRCRAFTELECTRICPOWERSOURCESYSTEMTHEORYOFEVIDENCEANDDEMPSTERSRULEAREINTRODUCEDANDTHEMETHODGETTINGPROBABILITYEVALUATEISSTUDIEDTHERESULTSOFTHESIMULATIONSSHOWTHEEFECTIVENESSOFEVIDENCEREASONINGMETHODANDTHECONDITIONDETECTIONANDFAULTDIAGNOSISSYSTEMONTHEGROUNDWORDSAIRCRAFTELECTRICPOWERSOURCEFEATUREEXTRACTIONFAULTDIAGNOSISINFORMATIONFUSIONEVIDENCEREASONING11

簡介：中圖分類號V23191學(xué)科分類號082502論文編號1028702100021碩士學(xué)位論文航空發(fā)動(dòng)機(jī)輪盤標(biāo)準(zhǔn)載荷譜編制方法研究研究生姓名學(xué)科、專業(yè)研究方向指導(dǎo)教師周楠航空宇航推進(jìn)理論與工程結(jié)構(gòu)強(qiáng)度與振動(dòng)宋迎東教授南京航空航天大學(xué)研究生院能源與動(dòng)力學(xué)院二。一。年三月K◆●NANJINGUNIVERSITYOFAERONAUTICSANDASTRONAUTICSTHEGRADUATESCHOOLCOLLEGEOFENERGYANDPOWERENGINEERINGRESEARCHONTHEMETHODOFASTANDARDIZEDFATIGUETESTLOADINGSEQUENCEFORAIRCRAFTCOLDSECTIONENGINEDISCSATHESISINAEROSPACEPROPULSIONTHEORYANDENGINEERINGBYNAMEZHOUNANADVISEDBYPROFSONGYINGDONGSUBMITTEDINPATTIALFULFILLMENTOFTHEREQUIREMENTSFORTHEDEGREEOFMASTEROFENGINEERINGMARCH，2010

簡介：西北工業(yè)大學(xué)碩士學(xué)位論文噪聲分析系統(tǒng)在航空發(fā)動(dòng)機(jī)試車臺的應(yīng)用研究姓名黃晶晶申請學(xué)位級別碩士專業(yè)環(huán)境工程環(huán)境信息處理指導(dǎo)教師雷勇20060301萬P≯士摯碩士學(xué)位論文英文摘要RESEARCHOFNOISEANALYSISSYSTEMINAEROENGINETESTABSTFACTTHISPAPERPRESENTSASYSTEMEXPLOITINGWAYBASED0NDIGITALTECHNOLOGYANDVIRTUALDISPLAKWHICHCANBEAPPLIEDINENGINEERINGFIELDASYSTEMWASDESIGNEDTOANALYZINGNOISESIGNALUTILIZINGNISOFTWARETOOLINVISUALC十ENVIRONMENTTHISSYSTEMSUPPLIESAIGST，EXACTANAVISUALWAY，WHICHCANCOLLECTANDANALYZESIGNALITREALIZESALOTOFFMLCTIONSSUCHASDECIBEDMETERCALIBRATIONANDDIMENSIONCONVERSION，THECOLLECTIONANDSAVEDOFNOISESIGNAL，WINDOWFUNCTIONS，F(xiàn)ILTERS，AVERAGETIMES，POWERSPECTRUM，CEPSTRUM，THIRDOCTAVEBAND，ANDSOONTHISSYSTEMWASUSEDTOCOLLECTEDANDANALYZEDNOISESIGNALOFTURBOJET一7，TURBOPROP一6，TURBOFANJETTTISSTRESSEDINTHISPAPERTHATTHEANALYSISMETHODSOFPOWERSPECTRUMANDTHIRDOCTAVEBAND，ACCORDINGTOTHEANALYSISONNOISESIGNALOFABOVEAEROENGINESOPERATIONSTATUSMESSAGESOFAEROENGINESWEREAVAILABLE，MEASURINGANDANALYZINGTHENOISEOFINSIDEANDOUTSIDEOFAEROENGINETEST，WHICHPROVIDESTHEFOUNDATIONOFTHEAEMENGINETESTDESIGN，EVALUATETHENOISEENVIRONMENTINAEROCNGINETEST，ITINDICATESTHATNOISEMEASUREMENTISNOTONLYTHEREQUIREMENTOFREDUCINGENGINENOISEBUTALSOANASSISTANTINSTRUMENTOFENGINECONFIGURATIONANDFAILUREDIAGNOSISKEDUORDSNOISE，DIGITALSIGNALPROCESSING，POWERSPECTRUMFL矗RDOCTAVEBAND，AEMENGINE1J