外文翻译航空发动机状态监测系统设计研究.docx
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外文翻译航空发动机状态监测系统设计研究.docx
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外文翻译航空发动机状态监测系统设计研究
外文翻译--航空发动机状态监测系统设计研究
沈阳航空航天大学毕业设计
外文翻译
学院
自动化学院
专业
运载器这测试技术
班级
94070301
学号
2009040510011
姓名
李万峰
指导教师
崔建国
负责教师
崔建国
沈阳航空航天大学
2013年6月
Aeroengineconditionmonitoringsystemdesignstudy
Designresearchabstract:
theaircraftengineconditionmonitoringsystemforacertaintypeofaircraftengineastheresearchobject,discussedtheenginestatemonitoringsystemdesignandimplementation,thispapermainlydiscussesthestatusmonitoringsystemoftheoveralldesign,systemsoftwareandhardwaredevelopmentandtestingandredundancydesign,andinthedesignofenginestatemonitoringsystem,introducedtheembeddedPC/104modules.Inordertomakethestatemonitoringsystemhasabetterscalabilityandadaptability,thesystemdesignedcanworkinthreeways:
airborneoperationmode,dataplaybackmodeandgroundtestrunmode,throughthesewayforautomaticmonitoringofenginestateparameter,forthestateoftheenginetrendanalysis,faultdiagnosis,andastoprovidescientificbasisformaintenance.
Keywords:
theengineconditionmonitoring;PC/104;Redundantdesign.
1.Theintroduction
Asthepowersourceoftheairplaneflight,aircraftengineresearchisaverycomplexprocess,theaircraftenginetestasthedevelopmentofthethreepillars(calculation,manufactureandtest),oneofitsimportanceisself-evident,itturnsout,mainlyconsistedofenginetest,ratherthanbycalculationandanalysis.Forthedevelopmentofanaircraftenginegroup,isflat,howwecandecidethehowdevelopedhorizontalengine.Foraircraftenginemanufacture,conditionmonitoringisanimportantexaminationmethodofengineperformance,byconditionmonitoringandtestingworkistoadjusttheengineperformanceandbreak-in,checkthemanufacturingoroverhaulquality,finallygivestheenginefactoryperformancereportpurpose,thereforetheaccurateandreliabletestmethodforstatemonitoringtoensurethequalityoftheenginehasthevitalsignificance.Asweallknow,theenginevibrationandhighnoiseintheprocessofworkandthestrongjammingsignal,allparameterstothevarietyofthemonitoringsystemputsforwardhigherrequirements.Especiallywiththeimprovementofengineperformance,real-timemonitoringoftheparametersneededforconditionmonitoringisbecomingmoreandmorepeoplecontinuetoexplorenewtestingtechnologyformanyyears,toadapttotheincreasinglydevelopmentofenginetesttechnologyrequirements.
1.Theconditionmonitoringsystemoveralldesign
Theconditionmonitoringsystemisdesignedforacertaintypeofturbofanengine,theenginemonitoringsystemoftheinputsignalispartofatotalof17analog,3road16wayswitchfrequencyandquantity,including17analog,3roadfrequencyquantitythroughthesignalconditioningcircuitintoastandardsignalconditioning,tolowerplacemachine;Under16wayswitchquantityafteradoptingthelightintoamachine.Inthedataprocessingpartoftheneedforcontinuousmonitoringofstateparametersoftheengine,sointheneedforsignalprocessing,storageandtransmission,theuppermachineatthesametime,accordingtotheneedtoreceivethesignalinrealtimeandifsamplesvaluesmorethanitsupperandlowergivealarm,includingbuzzerlowerplacemachineandsuperordinationmachinescreenalarm;PCthedatadisplaymodeincludingcurvedisplay,digitaldisplay,simulationtabledisplayandrecordthebrowsing;Thedatacommunicationbetweenuppermachineandlowermachinewayusingserialcommunication.Inordertoimprovetheextensibilityandadaptabilityofenginestatemonitoringsystem,thesystemdesignedcanworkinthreeways:
airborneoperationmode,dataplaybackmodeandgroundtestmode,includingairborneoperationmodecanbePC/104modulesseparatelyintheformoftheairbornelaunchduringtherealflighttest,becauseofthePC/104modules,smallvolume,highreliability,hightemperatureresistanceandresistancetoadverseconditions,welladaptedtotheflightenvironment,tothepartsoftheflightstateandparametersintheflightdetailsandaccurateacquisition,dataprocessingandatthesametime,allthedataarestoredinthesolidplate,inordertoperformdataplaybackandanalysisofengineperformanceinthefuture;DataplaybackmodecanbekeptinaflighttestdatasenttothePCviaaserialportcommunication,PCreceivesthedatareal-timedisplay,includingusingdigitalwatchdisplaythedataintheformofclear,atthesametimealsotosimulateimage,intheformoftableofdata,andinadditionyoucanalsochoosetousedisplaymodewiththecurvewillbetestingthestateparameterofdynamicdisplay,andfinallytothereceiveddatastoredinharddisk;Groundtestmethodsorganiccombinationoftheairborneplaybackmode,operationmodeanddatawillbecollectedintheprocessofenginetestparametersareprocessed,thenreal-timetransmittingthemviaaserialporttothePC[4],PCcandisplaythedatainrealtimeagainatthesametimetosavethem.Inordertoimprovethereliabilityofthesystem,makethesystemself-checkfunctionandredundantYuJiegou,accordingtothesystemfaultconditionstochangethemodulationcircuitordowntime.Accordingtotherequirementsofaircraftenginetestof20analogquantityandfrequency,andquantityof16wayswitchsamplingfrequencyissetto20ms,analogsignalprocessingprecisionfor12,andallrecuperatedinto0~5V.Syntheticallyconsideringthefactors,thesystem'suppermachineandlowermachineUSESthemicrocomputer,andselectsthematurityoftheA/DconversionboardanddigitalI/Oboardtocollectsignals,anddesignedthesignaldisposalcircuitofsignalisolation,filteringandamplificationprocessing,transformationintoAstandardsignal.Softwareusedtodevelopwaystomeetthesystemrequirements.Accordingtotheworkingenvironmenttemperature,humidity,vibrationresistanceandanti-interferencerequirements,choosethePC/104bus,andlowerplacemachineandperipheralboardshavetochoosethePC/104module,inordertomeettheaircraftairborneequipmentrequirementfortheweight,volume,etc.
2.conditionmonitoringsystemhardwaredesign
Basedonthesystemoveralldesign,thewholemonitoringsystemhardwareisshowninfigure1USEShardwarestructureclassifiers,byAP4PCandAPC/104intoAunit,underthelowermachineandPC/104motherboard,peripheralinterfacecard,andallkindsofcircuit,andvariousperipheralinterfacecardcircuitincluding:
3PC/104A/Dconversionboard,2piecesofPC/104digitalI/Oboard,light1PC/104multi-functionacquisitionboard,terminalboard,signaldisposalcircuitswitchingcircuitandfield/testing.PC/104motherboards,PC/104A/DconversionboardandPC/104digitallighteveryI/OboardimplementationofenginesimulationsignalmeasureandfrequencyA/Dconversionandcollection,aswellastotheamountofenginedigitalsignalisolation,andsignaldataprocessingofcollection,storageandtransmission.PC/104multi-functionacquisitionboardsandself-inspection/sceneswitchingcircuitisusedtoimplementthesystemself-checkingandsitedataacquisitionofswitching,andsendingself-checkingvoltage.Signalconditioningcircuittoisolation,filtering,amplifyingthesignal,theytransformintostandardsignal,andthenintoamachine.PCareusedtoimplementthedataacquisitionmachinebysendingdatareceiving,storage,displayandalarm.
3.conditionmonitoringsystemsoftwaredesign
Oftheconditionmonitoringsystemsoftwaremodule'sgoalistodevelopasetofapplicabletotheaircraftengineconditionmonitoringplatformsystem,itcanreal-timehighpressureintheengineworkingprocessspeed,throttleAngle,displacement,oilinjectionnozzlelocation,thefuelflowrate,vibrationofX,Y,atmospherictemperature,T,5,7Ttemperature,oiltemperature,oiltemperature,hydraulictemperature,carframeunderstaticpressure,thestaticpressure,highpressure,fueloilpressure,oilpressureandhydraulicoilpressure,etc.17analogand3road,frequency,and16wayswitchfordataacquisition,processing,storage,operation,suchascommunication,statusdisplayandalarmsoftwarerunningontheuppermachineandlowermachinerespectively,systemspecificfeaturesinclude:
3.1stateparameterreal-timecollectionandprocessing
Inthesystem,completeenginevariousreal-timeacquisitionofstateparameter,andtheassociatedwiththestateparameterofprocessingandcalculation,andthedeviationsfromthenormalrangeofstateparametersonthetag,toanalyzetheengineworkingcondition.
3.2real-timestatusparametersandplaybackdatatransmissionOnthesurfaceofthetestmodeandonlinedataplaybackmode,amachineunderthePC/104collectedstatusparametersviaaserialportinreal-timetransmissiontothePC,andsavetothedatabaseonaPC.
3.3statusmonitoringandreal-timedatacontrolsandrelatedtouse
ofdrawingtoolstosimulatetheacquisitionstateparametersofthedigitaldisplayandthetableshows,anddrawthetimecurvesothattheobservationparameteroftheparametersofthedynamicchangeandtrendofthefuture,whichcanmonitortheworkingstateoftheengineatdifferenttimes,toachievethepurposeofconditionmonitoring.
3.4alarmoutputandprint
Whenthecollectiontothestateoftheparametervaluesdeviatefromnormalrangeafter,throughthevoicewarningcolortooperatingpersonnel,location,anddisplayalarminginformation,andallthewarningpointdatacanbeextractedfordisplay,analysisandprinting.
4self-checkingsystemandredundancydesign
4.1self-checkingsystemsignaldisposalsystemisanimportantpartofgener
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