外文翻译航空发动机状态监测系统设计研究.docx

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

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],PCcandisplaythedatainrealtimeagainatthesametimetosave