Development of an automatic arc welding system using an adaptive sliding mode control

This paper develops an automatic welding control scheme for alternating current shielded metal arc welding (SMAW) system. A mathematical model of the welding control system is derived and the system parameters identified. An adaptive sliding mode controller is designed to estimate the bound of the s...

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Bibliographic Details
Published inJournal of intelligent manufacturing Vol. 21; no. 4; pp. 355 - 362
Main Authors Wu, Cheng-Yu, Tung, Pi-Cheng, Fuh, Chyun-Chau
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.08.2010
Springer Nature B.V
Subjects
Analysis
Business and Management
Control
Control systems
Controllers
Electrodes
Labor costs
Machines
Manufacturing
Mathematical models
Mechatronics
Power supply
Processes
Production
Robotics
Studies
Welding
Sliding surface
Adaptive sliding mode
Variable structure control
Shielded metal arc welding
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Summary:This paper develops an automatic welding control scheme for alternating current shielded metal arc welding (SMAW) system. A mathematical model of the welding control system is derived and the system parameters identified. An adaptive sliding mode controller is designed to estimate the bound of the system uncertainties and to modulate the electrode feed rate in such a way that the desired arc length and arc current are maintained as the electrode melts during the welding process. The proposed control method is suitable for any consumed electrode welding technique. The simulation and experimental results show that the automatic welding control system successfully maintains the magnitude of the arc current at the desired value and preserves the arc stability, thereby obtaining an enhanced SMAW control system performance.
ISSN:0956-5515
1572-8145
DOI:10.1007/s10845-008-0184-3