提高激光跟踪三维坐标测量精度的研究

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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