外文翻译航空发动机状态监测系统设计研究Word下载.docx

外文翻译航空发动机状态监测系统设计研究Word下载.docx

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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

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