鎢極氬弧焊熔池三維面形傳感系統(tǒng)設計研究.pdf

1、分類號:UDC:密級:學號:滬么刀口字osl沁鄉(xiāng)南昌大學碩士學位論研究生文鎢極氫弧焊熔池三維面形傳感系統(tǒng)設計研究AVisualSensorSystemDesignedForThreenDimensionalSensingofWeldingPoolSurfaeeInGTAW艾孝譜培養(yǎng)單位(院、系):物理系指導教師姓名、職稱:劉南生教授申請學位的學科門類:工學學科專業(yè)名稱:光學工程論文答辯日期:_、一二一械八評閱人:2011年6月‘日ABS

2、TRACTABSTRACTThevisualshaPeandsubst一rfaeedefeetofareweldingseamandassessthesit、lationofinnerfming15refleeteddireetlybytheinfmationofareweldingPool.Therefe，thesensorfinformationofweldingPool15signifieanttothefmingeontrolf

3、orintelligentizedarewelding.WeldingPool15dynamie，there15strongare，hightemPerattlreandPoolsurfaeesPeeularrefleetion，PoolsurfaeetoPography15hardtodetected.AnewmeasurementsystemwhiehbasedonactiveoPtiealvisualsensorfthree一di

4、mensionalweldingPoolsurfaceshaPe15designed.ThesensingPrineiPleofthissystem15introdueed:abunehoffringestrueturelinght15ProjeetedonthePoolsurfaeebyProjeetionsystermcomeintobeingdefmedstriPes，aCCDeamerawasusedtoobservetheim

5、ageswhieheontainabundantinformationofweldingPool.Thissystemhastwomoveableloadingarms，thevariouseomPonentsoftheProjeetionsystemshootsystemwereinstalledonthem.ThLLsyoueaneasilyadjusttheangle，distaneeeasilytePlaeementdeviee

6、初thdifferentmethodsfshootingintheexPeriment.RefleetioneharaeteristiesofthelaserandareontheweldPoolsurfaeeandsPatialfilteringsystemfunetionwreanalyzed，amathematiealmodelofoPtiealimagingsystemwasgaven.Thenadiseussion15give

7、ninordertogtlidetheexPerimentsofPoolimageaequisition.InthisPaper，304stainlesssteelwiththeGTAWweldingProeess，4fsPatialfllteringsystemwasusedtoobtainlaserstriPeimagesrefleetionfromweldingPoolsurfaee.Theweldingeurrent，laser

8、Power，Projectionangleandweldingdireetionwereehangedtoobtainimagesindi價rentParameters.Theeftbetsoftheseehangeshavebeenanalysised.APProPriateProjeetionanglesystemParametersarefoundtogetbetterimages.obtainingweldingPoolimag

9、esbyeameradireetlyandimagingPanelalsohavebeenused.TheeharaeteristiesandresultsofdifferentmethodsforimageaequisitionhavebeenanalysisedandeomPared.Seleet4fsPatialfilteringsystem，undersueheireurlstanees，clearweldPoolsurfaee