TY - JOUR
T1 - Closed-loop control of weld penetration using front-face vision sensing
AU - Zhang, Y. M.
AU - Kovacevic, R.
AU - Wu, L.
PY - 1993
Y1 - 1993
N2 - Feedback control of weld penetration based on a front-face sensor is a challenging problem in the field of welding. A novel vision-based approach is proposed in the paper for full penetration control of the gas tungsten arc welding (GTAW). Owing to the relationship between the front-face weld geometry and back-face weld width (representation of the full penetration state), which has been reported earlier by the present authors, it is possible to use the front-face geometry as feedback of full penetration. Based on the dynamic modelling and the analysis of accepted adaptive control algorithms, an adaptive predictive decoupling controller is developed. Simulations and experiments under a variety of welding conditions have been conducted to verify the effectiveness of the proposed approach and controller.
AB - Feedback control of weld penetration based on a front-face sensor is a challenging problem in the field of welding. A novel vision-based approach is proposed in the paper for full penetration control of the gas tungsten arc welding (GTAW). Owing to the relationship between the front-face weld geometry and back-face weld width (representation of the full penetration state), which has been reported earlier by the present authors, it is possible to use the front-face geometry as feedback of full penetration. Based on the dynamic modelling and the analysis of accepted adaptive control algorithms, an adaptive predictive decoupling controller is developed. Simulations and experiments under a variety of welding conditions have been conducted to verify the effectiveness of the proposed approach and controller.
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U2 - 10.1243/PIME_PROC_1993_207_312_02
DO - 10.1243/PIME_PROC_1993_207_312_02
M3 - Article
AN - SCOPUS:0027831456
SN - 0959-6518
VL - 207
SP - 27
EP - 34
JO - Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering
JF - Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering
IS - 1
ER -