基于雙模冗余的立方星高可靠星載計(jì)算機(jī)設(shè)計(jì).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(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過(guò)的研究成果，也不包含我為獲得任何教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過(guò)的材料。與我一同工作的同事對(duì)本學(xué)位論文做出的貢獻(xiàn)均已在論文中作了明確的說(shuō)明。研究生簽名：／1刀矧裼沙肜年鄉(xiāng)月膨Ft學(xué)位論文使用授權(quán)聲明南京理工大學(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?jī)?nèi)容，可以向有關(guān)部門或機(jī)構(gòu)送

2、交并授權(quán)其保存、借閱或上網(wǎng)公布本學(xué)位論文的部分或全部?jī)?nèi)容。對(duì)于保密論文，按保密的有關(guān)規(guī)定和程序處理。一虢固p形年弓月／g日AbsⅡ∞t碩士學(xué)位論文AbstractWiththespacemissiontendtobediversifiedthecubesatwhichhaSthecharacteristicsoflowcost，highintegration，shortdevelopmentcycleisbecominganewhots

3、potofaerospaceresearchandwidelyusedintechnicalverification，tothegroundobservation，communicationrelayandSOonAsthecenterofthecubesat，thedesignofonboardcomputer(OBC)notonlymeetthelowcosteasyexpansionandothercharacteristicsb

4、elongstocubesat，butalsotomeetthebasicreliabilityofaspacecraftBasedont11echaracteristicsofcubesat，thispaperanalysesthedesignofcubesatelectronicsystemInaddition，thepaperintroducesaseriesoffaulttolerancetechniquesonhardware

5、andsoftwareCombinedwiththedesigncaseofothercubesatwhichhasbeenonorbit，thepaperproposesadesignmethodforaOBConhighreliabilitywhichissuitofthecubesatdevelopmentThismethodisbasedontheduplicationredundancy，andtakescoldbackupm

6、echanismThepaperdesignarbitrationmoduleandEDACmoduleinFPGAtopreventthetotalionizingdose(TID)andsingleeventeffect(SEE)，andrealizesthedetectionofCPUswitchinganderrordetectionandcorrection(EDAC)ofmemoryConsideringtheacc啪ula

7、tionofSEE，thepaperaddsrefreshmechanismintoEDACSOastOimprovetheabilityofpreventingfromSEEIntllematterofsoftwarefaulttolerant，F(xiàn)irstlythispaperfocusesontheprotectionofcriticaldataprocedure，functionstackandproposescorrespond

8、ingprotectmeasuresSecond，thepaperbuildsthesoftwarevotingsystemtoavoidarithmeticerrorinrunning，anddesignsthetasklevelsynchronizationmechanismandexpertvotingsystemtosolvethereal‘timeproblemalldtheshortofsinglevotingstrateg

9、yInaddition，thispaperdesignadualbackupbussvstem肌drealizethebusfaultnodelocalizationandswitchingthroughestablishingthenodemutIlaImonitoringmechanismInordertosolvethedatatransmissioncontinuouslywhileswitchingnodes，thispape

10、ralinkorientedtransportlayerprotocollSdesignedtoensurethereliabilityofdatatransmissionFinallythepaperevaluatestheperformanceofpreventSEUthroughfaultinjectiontestTheresuItsshowthatthesystemhasacertainfaulttoleranceforsing