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ID:36424889
大小:6.52 MB
页数:119页
时间:2019-05-10
《提高激光跟踪三维坐标测量精度的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、天津大学博士学位论文提高激光跟踪三维坐标测量精度的研究姓名:赵树忠申请学位级别:博士专业:测试计量技术及仪器指导教师:张国雄20070701AbstractInrecentyears,moreandmore3Dcoordinatemeasurementrequirementshaveappearedinthefieldssuchasindustry,nationaldefense,etc,thereforevariouskindsmeasuringsystemshavebeendeveloped.Amongthesesystems
2、,moreandmoreattentionshavebeenpaidtothelasertracking3Dcoordinatemeasuringsystembasedonmulti-laterationprincipleforitsadvantagessuchashighaccuracy,largemeasuringrange,flexibility,dynamicmeasurement,in—situmeasurement,self-calibration,lostinformationrecovery.Withthefina
3、ncialsupportfromtheNationalNaturalScienceFoundationofChina(projectcontractNo.59875064),afour-beamlasertracking3DcoordinatemeasuringsystemhasbeendevelopedbyOurresearchgroup.Inthisdissertation,astudyontheenhancementofthecoordinatemeasurementaccuracyofthesystemiscarriedo
4、n.Themainworkandcreativeresearchfulfilledinthedissertationinclude:1.Extensiveinvestigationsontheprogressandstatusquobothathomeandaboardabout3Dcoordinatemeasuringtechniques,especiallyaboutlasertracking3Dcoordinatemeasuringtechniques,arecarriedout.Workingprincipleandmai
5、nfunctionalcharacteristicsofthefour-beamlasertracking3Dcoordinatemeasuringsystemaleanalyzed.Designconsiderationsofthemainsubassembliesofthesystemareintroduced.2.The2ndand3rdgenerationsofthefolk.supportingtrackingmechanismwithasingletrackingmirrorandtwoindependentdrive
6、saredesigned.Byimprovingtheprinciple,structuresandtechniques,theaccuracyofthetrackingmechanismisenhanced.3.Ahemisphere—supportingtrackingmechanismwithasingletrackingmirrorandtwOindependentdrivesisdesigned.Asteelballwhichhashighformaccuracyisusedtoproducethehemispherea
7、ndcomponentstoadjustthemirroreccentricityandthepositionofthelaserspotisconfigured.Thesemeasuresenhancetheaccuracyofthetrackingmechanismsignificantly.4.Theideathatmeasuringopticalell'Orofthecat’seyeretro—reflectorandthencompensatingitintheprocessofself-calibrationandco
8、ordinatemeasurementaccordingtothemeasuredresultisproposed.AsimpleandpracticalmeasuringmethodtomeasuretheopticalelTorofthecat
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