航空动力学
Abstract
Abstract
11hetechniqueoflabyrinthsealislttconventionalnon-contactsealingtechnology,
towhichiswidelyusedinllcl'ocngilic.Thedearaneeoflabyrinthisrelated
acapabili哆ofaaroclrlgirlc.Soitisnecessarytoaccuratelymcasuretheclearanceoflabyrinthinthe
011processofdevising,ameliorating,producingandmaintainingengines。刃搿study
measuringtheclearanceofJabyrinthnOWisattheinfantstage
studies
which1tilathomo.确ispaperaccuratemeasuringsystembasedOnPMACmotioncontroller’sstructure,eanbeusedtomeasuringthedearaneeoflabyrinttL
OnThemainresearchesofthispaperfile猫followings.Basedtheanalysesof
variousmethodandlabyrinthsealofaeroenginetahecharacteristicsof,reflectinglightintensitymeasurementWillsselected.Afiber-opticsensorwhichsatisfiedthemeasureaccuracyofthesystemandthesystemofdatameasur锄aentsystem,includingPCIhigh-speeddataacquisitionear,t,amplifier,A/Deonvensionand
ThehardwarestructureofthesystemSOon,weredesigned.motioncontroller’sw鹬determined.WimPMAC
straeture黼thecore,thesystemis
ofdualCPUaprecisemotioneontroll'ssystemwhichWaSconsistflame砸mPMACandIPC笛the
toUl埘OWncomputerandBAYSIDE’s≥讼NOM睨姆INmotor.According
ll莉warcstructt聪,thet,rineiplethetestdataandthecharacteristicsofsystem'sandthemethodtoauto-calibratethelabyrintlameasurementsystemⅥ埕略determined.athePIDcontrolprincipleaboutPMACmotioncontroller’sstructureandthePIDparametersettingofPMACinthesystemWCreputforwardindetail.Finally,thosottwareofthesystemWaSprogrammed,includingthenon-real-timesottwareofuppercomputerandtherealtimesott'wareoflowercomputer.11瓣uppercomputersottwareisdevelopedbymeansofVC++6.0includingPMACparametersetting
datacollectionPMACmotioncontrolsystem'sauto-calibrationafsystemandtheandinformationprocessingofclearanceoflabyriath.Thelowercomputersottwareisfinishedmainlybyusingthebuilt-infunctionlibraryofPMACcontrolier'sstructureintheVC}卜6.0environment.theprogramofrealtimemotionwasprogrsmmedusingPLClanguage.
曩lecaptivetestandtheresultsofanalysisindicatedthattheprincipleofthislI