Search: (WFRF:(Christiansson Anna Karin 1947 )) srt2:(2010-2014)
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Stereo vision for p...
Stereo vision for path correction in off-line programmed robot welding
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- Ryberg, Anders, 1973- (author)
- Högskolan Väst,Avd för industriell produktion,PTW
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- Ericsson, Mikael, 1975- (author)
- Högskolan Väst,Avd för industriell produktion,PTW
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- Christiansson, Anna-Karin, 1947- (author)
- Högskolan Väst,Avd för industriell produktion,PTW
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- Eriksson, Kenneth, 1952- (author)
- Högskolan Väst,Avd för lantmäteriteknik och matematik,PTW
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- Nilsson, Jim, 1983- (author)
- Högskolan Väst,Institutionen för ingenjörsvetenskap,PTW
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- Larsson, Matthias (author)
- Högskolan Väst,Institutionen för ingenjörsvetenskap,PTW
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(creator_code:org_t)
- 2010
- 2010
- English.
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In: Proceedings of the IEEE International Conference on Industrial Technology. ; , s. 1700-1705
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The paper describes a versatile machine vision system for correcting off-line programmed nominal robot trajectories for advanced welding. Weld trajectory corrections are needed due to slight variations in weld joints. Such variations occur naturally because of varying tolerances in parts and to heat induced deformations during earlier weld sequences. The developed system uses one camera and a weld tool mounted on the robot hand. As a first step, the whole system, including the camera, is calibrated. Then the system takes images of the weld joint from different positions and orientations, and determines the weld joint geometry in 3D using a stereo vision algorithm and a novel camera model. The weld trajectory is then updated in the robot control system, and weld operation is performed. These steps are repeated for all weld sequences of the work piece. The strategy has successfully been demonstrated for a standard industrial welding robot and a standard FireWire CMOS camera. The maximum deviation of the trajectory found by the system compared to a reference (coordinate measuring machine) is 0.7 mm and the mean deviation is 0.23 mm. Thus, the system shows high potential for industrial implementation. ©2010 IEEE.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Keyword
- Camera model; CMOS camera; Firewires; Heat-induced deformation; High potential; Industrial implementation; Machine vision systems; Mean deviation; One camera; Robot control systems; Robot hand; Robot trajectory; Robot welding; Stereo vision algorithms; System use; Trajectory correction; Weld joints; Welding robots; Whole systems; Work pieces
- Other technology
- Övriga teknikvetenskaper
- Manufacturing and materials engineering
- Produktions- och materialteknik
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- kon (subject category)
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