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2016 №12 (05) DOI of Article
2016 №12 (07)

The Paton Welding Journal 2016 #12
TPWJ, 2016, #12, 34-37 pages
Mathematical model of welding circuit in robotic consumable electrode arc welding

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #12, 2016 (December)
Pages                      34-37
G.A. Tsybulkin
E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
In the article the mathematical model of dynamic processes, running in the welding circuit during robotic gas-shielded arc welding using consumable electrode, is investigated The welding circuit is considered as a self-stabilizing system with a feedback by the electrode melting rate. Unlike the known mathematical models, in the investigated model the dependence of the electrode melting rate on actual values of welding current and arc voltage is taken into account. The basic aim of the article is the study of reaction of welding circuit on external disturbances arising in the process of arc welding. In the frames of the developed model the criteria for asymptotic stability were established, which in addition to the already known criteria impose certain limits on the parameters of arc welding mode itself, which is important from the practical point of view. Using the computer modeling a good correlation of this model with the real processes, running in welding circuit, was illustrated. 14 Ref., 4 Figures.
Keywords: robotic arc welding, consumable electrode, welding circuit, mathematical model, stability of welding processes
Received:                06.09.16
Published:               24.01.17
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