基于增强现实ar装配系统研究

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1、AcomprehensivesurveyofaugmentedrealityassemblyresearchAbstractprovideaconciseoverviewofthetechnicalfeatures,characteristicsandbroadrangeofapplicationsofARbasedassemblysystemspublishedbetween1990and2015.Introduction1.traditionalcomputer-aidedassemblytechnology：requirtoid

2、entifyconstraintinformationbetweenthematingparts；difficulttoforeseetheimpactofindividualmatingspecificationsonotheraspectsoftheassemblyprocess；lacksdirectinteractionbetweenusersandthecomponents.2.VRassemblysystem：lackingofrealisticexperience，decreasingthefidelityandc

3、redibility；noteasytofullyandaccuratelymodelthereal-timeandactualworkingenvironments.3.ARassemblysystem：doesnotneedtheentirerealworldtobemodeled；enhancestheinteractionbetweenthesystemsandtheusers，manipulatetheobjectsnaturally.SixfunctionalmodulesofARassemblysystemThreema

4、incategoriesARassemblysystem120articles，39.47%116articles，38.16%68articles，22.37%ARmulti-mediaandinteractiveinstructionsDisadvantage：focussolelyonprovidingstep-basedinstructions，overlookinguser’sneedoftimelyguidanceinassemblyoperations；couldnotkeeptrackoftheassemblystatu

5、sinreal-timeandrecognizeerrorsandcompletionstates；whenassistingcomplexassemblyprocesses，time-consumingauthoringprocedures,integrationwithenterprisedata；theinteractionschememaydisturborinterruptuser’son-goingassemblytask.Target:detectingandrecognizingtheusers’actionsinord

6、ertoprovideanindustrialrobusthandsfreeinteraction.examinetheappropriatenessofARguidanceformorecomplex,multi-stepassemblytasks.Context-awarenessandauthoringARassemblysystemkeepstrackofthestatusofusersinreal-time,automaticallyrecognizingmanualerrorsandcompletionateachassem

7、blystepanddisplayingmultimediainstructionscorrespondingtotherecognizedstates.ARassemblyauthoringsystemshavebeenenabledtocopewithmanualassemblyoperationsefficiently;Disadvantage：time-consumingtobuild‘‘adhoc’’systems.needmanualinput.Target:tobemoretask-adaptive,suiteforawi

8、derangeofdifferenttasks.considertheimplementationissuesofsensors.becomesmartenoughtounderstandauser’sin