大口徑空間Sic反射鏡檢測中重力和應(yīng)力解耦技術(shù)研究.pdf

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過的研究成果，也不包含我為獲得任何教育機構(gòu)的學(xué)位或?qū)W歷而使用過的材料。與我一同工作的同事對本學(xué)位論文做出的貢獻均已在論文中作了明確的說明。學(xué)位論文使用授權(quán)聲明日南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容，可以向有關(guān)部門或機構(gòu)送交并授權(quán)其保存、借閱或上網(wǎng)公布本學(xué)位

2、論文的部分或全部內(nèi)容。對于保密論文，按保密的有關(guān)規(guī)定和程序處理。研究生簽名：兇1]年3月1日AbstractThelargeapertureopticalelement，thatbeusedinspace，requiresthatthegroundtestaccuracviscOnsistentwiththeopticalaccuracyofspaceuseDuringprocessing，underthecombinedactiono

3、fthegravitationalfield，thetemperaturefield，theclampingstressandSOon，the1argeapertureopticalelementsarepronetandomchangesintheshapeofthesurfaceThiskindofchange，thatiscoupledwiththemachiningerror，isverydifficulttoseparatef

4、romtheactualen舊rInthedifferentmeasuringmethodsandmeasuringprocess，thedifferenceofthepose趾dpositionofthemirrorwillaffecttheuncertaintyofthemeasurementresultsIt1Sa11importantfoundationtoensurethequalityofthelargeaperturemi

5、rrorinspacebylmprovlngthereliabilityofthemeasurement，andobtainingthetrueerrorofthemirrorsurfacebydecouplinganalysisthemeasuringerrorthatcausedbymultifactors，resolvingtheconsistencyofthemirrorstateunderthecouplingofvariou

6、sfactorsInthispaper，theSic(siliconcarbide)asphericprimarymirroroflmdiameteristakenastheobjectofstudy，andthemechanicalmodelisestablishedbyfiniteelementanalysisTheeffectsofgravityandsupportingstressontheprimarymirrordeform

7、ationareanalyzedZerocompensationtestprincipleoftheverticalandhorizontalplacementof咖measurementprogramsforsurfacedetectionByusingthefiniteelementmethodandthemechanicalmodel，thesupportingschemeof6pointfloatingsupportoftheo

8、pticalaxisissimulatedandanalyzed，andthesupportingstructureof6pointfloatingsupportistestedandverifiedexperimentallyByusingthemethodofmultianglerotation，themathematicalmodelofgravityerrorseparationisestablishedbyZemikepoly

9、nomialsurfaceerroranalysis，andthemethodofseparationofgravityerrorbywavefrontreconstructionisdesignedThesupportstructureandthegravityrotationmeasurementcanbeseenthatthesixpointfloatingsupportstructureeffectivelyavoidsthei

10、nfluenceofthesupportingstressonthesurfaceshapeofthereflectingprimarymirror，andCanensurethat，inthemeasurementprocess，TheangleoftheprimarymirrorCanbeusedtoobtainthecorrectmeasurementresult，whichcarleffectivelyreducethesupp

11、ortstressandtheinfluenceofgravityontheprimarymirrorreflectionprocessAtthesametime，almdiameterSicreflectionprimarymirrorerrortestopticalpathisbuiltupThetwomethodsoftheopticalaxisverticalplacementandtheopticalaxishorizonta

12、lplacementareusedtodetectthemirrorshapeoftheprimarymirror，andthedetectionresultsofthetwomethodsarecomparedAnalysis，afterthecomparativeanalysis，thefinalselectionoftheprimarymirrortopositionthemirrortodetectthereflectionof