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1、哈爾濱T稃人學(xué)碩十學(xué)位論文摘要無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)避開(kāi)了因陀螺動(dòng)態(tài)范圍小而引起的一系列難題,其缺點(diǎn)是計(jì)算量大。在慣導(dǎo)系統(tǒng)中的應(yīng)用DSP可解決這個(gè)難題。本文主要研究基于DSP的無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)的實(shí)現(xiàn)。本文首先介紹了DSP在捷聯(lián)導(dǎo)航系統(tǒng)中應(yīng)用的必要性和研究現(xiàn)狀,敘述了系統(tǒng)的總體方案設(shè)計(jì)及芯片的選型過(guò)程,并對(duì)數(shù)字信號(hào)處理器的結(jié)構(gòu)和特點(diǎn)作了概述。本文重點(diǎn)介紹了無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)軟硬件的設(shè)計(jì)。DSP采用TMS320(;6713,TI的32位高速DSP,支持雙精度浮點(diǎn)運(yùn)算。硬件設(shè)計(jì)包括電源模塊、時(shí)鐘模塊、電源監(jiān)測(cè)復(fù)位模塊、系統(tǒng)的數(shù)據(jù)采集模塊、外部存儲(chǔ)器接口模塊及與Pc機(jī)通信模塊,同時(shí)
2、介紹了CPLD的設(shè)計(jì)。軟件設(shè)計(jì)部分包括各模塊的編程和無(wú)陀螺導(dǎo)航算法的編程。本文詳細(xì)介紹了印制板的布局與布線的過(guò)程及遵守的原則,重點(diǎn)介紹了硬件電路的信號(hào)完整性原理,并提出了提高無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)信號(hào)完整性的具體措施。本文最后介紹了程序的二次裝載和代碼的固化。到目前為止,由DSP(TMS320C6713)作為無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)的核心數(shù)據(jù)處理器,實(shí)現(xiàn)了系統(tǒng)所要求的基本功能,提高了系統(tǒng)的集成度和運(yùn)算速度,減小了體積,降低了成本,提高整個(gè)系統(tǒng)的性能價(jià)格比,使無(wú)陀螺捷聯(lián)慣導(dǎo)系統(tǒng)能在實(shí)際工程中得以應(yīng)用。關(guān)鍵詞:無(wú)陀螺捷聯(lián)慣導(dǎo);DSP;CPLD;硬件電路設(shè)計(jì);信號(hào)完整性哈爾濱丁程人學(xué)碩十
3、學(xué)位論文ABSTRACTAseriesofdifficultiescausedbythenarrowdynamicoperatingrangeofgyroscopescanbeavoidedinGFSINS(gyroscopefreestrapdowninertiMnavigationsystem),butanotabledisadvantageisagreatdealofcalculation.SINSbasedOilDSPsolvedthisproblem.TheemphasisofthispaperishardwaredesignofGFSD噶basedonDSP.
4、11learticlefirstbriefednecessityofDSPapplicationinSINSandr鼯earchpresentstate,narratedtheprocessofsystemprojectdesignandchipselection,summarizedstructureandcharacterofDSP.ThearticlefocusedonintroductionofhardwareandsoftwaredesignofGFSINS.ThesystememployedTMS320C6713ofTI勰digitalsignalproc部s
5、or,whichis32-bit,floating-point,high-pefformanceDSPwithdoublefloating-pointcalculation.Thepartofhardwarecircuitdesignincludedpowersupplyunit,clockunit,powermonitorandfesetunit,dataacquisitionunit,externalmemoryinterfaceunit,communicationtopcunitanddesignofCPLD.Thepartofsoftwaredesigninclu
6、dedprogramofallhardwareunitsandtransplantofGFSINSalgorithmroutine.Thispaperin仃oducedtheprocessofPCBplacementandrouteandfollowedruleindetail,theprinciplesignalintegrityandproposeddetailedmeasuresenhancedSIperformanceofGFSINS.Thepaperfinallyintroducedsecond-stagebootloadertorainandcodeburnt
7、oflash.TheGFSINSwithTMS320C6713ascorald/gitalsignalprocessorrealizedbasicfunctionrequiredbysystembyfar,enhancedintegrityandcalculationspeed,whilevolumeandcostwerereducedandtheratiobetweencapabilityandpricewasimproved,whichmadeGFSINScouldbeappliedinthepracticalengine