PSD激光三角測距系統(tǒng)設計.pdf

1、華中科技大學碩士學位論文PSD激光三角測距系統(tǒng)設計姓名：普晉亞申請學位級別：碩士專業(yè)：光電信息工程指導教師：楊克成20080604IIAbstractTherapiddevelopmentofmodernindustryputfwardincreasinglyhighdemsonrangingmeasurement.Asshtrangehighprecisionhighspeeddynamicmeasuringcompactvolume

2、etc.whichbelongtotraditionalrangingmeasurementarehardtosatisfiedbynowadaysmeasuringtechniques.Thusitisstrategicpragmatictoresearchonshtrangedynamiclasermeasuring.Theprecisionofnoncontactmeasuringbasedontheprincipleofopti

3、caltriangulationisimprovingmeanwhilethemeasuringsystemhasbeenfrequentlyusedinthemeasurementofobjectsurfaceoutlinegeometrydimensionssoon.Additionallyithasbecomeanimptantmethodinmeasuring.Thepaperdiscussedthedesignoflasert

4、riangulationmeasuringsystem.Basedonthetheyoflasertriangulationtherequirementsofprojectweanalyzemeasuringprincipledesignonekindofadvancedlasertriangulationmeasuringsystemthroughmathematicsimulationanalysisweprovethefeasib

5、ilityofthesystem.Besidesthatweanalyzethefactsincludingparametersofopticalconstructionacteristicsofobjectsurfacewhichmayhaveinfluenceonthemeasuringprecision.Thenwediscussthepositionaldifferencebetweenradiationcentroidcent

6、erofdiffusionspotonPSDanalyzetheinfluenceonsystemmeasuringprecisionfrompositionaldifferencereceivingopticalpower.Accdingtotheeticalcalculationsonsystematicalmeasuringabilitywefindinterrelationamongsystematicalparameters.

7、Takingfullaccountoftheprojectsizelimitswechoosethemultipassasopticalstructurethenchoosesystematicalcomponentsdesignmechanicalprototype.Finallywehaveexperimentsontheprototype.Bychangingreceivinglensapertureopticalpowertar

8、getcolweverifythatthesystemhastheabilityoftargetrangemeasuring.Themeasuringprecisionoftheprototypecansatisfytherequirementsoftheprojectthroughsignalprocessingcircuitsoptimizingalgithm.Keywds:advancedlasertriangulationmea