한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)

한국해양공학회 (Korean Society of Ocean Engineers)
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Control Gas Metal Arc Welding System Using Decentralized Method

  • Ngo, Manh Dung (Dept. of Electric-Electronic of Ho Chi Minh City University of Technology) ;
  • Phuong, Nguyen Thanh (Dept. of Electric-Electronic of Ho Chi Minh City University of Technology) ;
  • Duy, Vo Hoang (Dept. of Electric-Electronic of Ho Chi Minh City University of Technology) ;
  • Kim, Hak-Kyeong (Dept. of Mechanical Eng., College of Eng., Pukyong National University) ;
  • Kim, Sang-Bong (Dept. of Mechanical Eng., College of Eng., Pukyong National University)
  • 발행 : 2006.11.16
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초록

This paper presents a new way achieving better welding results of gas mental arc welding (GMAW) system by using a decentralized control method. In this paper, the GMAW system is considered as two separated subsystems such as a power source of GMAW (PS-GMAW) and a wire feed unit (WFU). The mathematical modeling of PS-GMAW and WFU are presented. Based on the modeling of two subsystems, a sliding mode controller and a proportional controller is designed for controlling the PS-GMAW and the WFU, respectively. Two decentralized controllers have to be designed to control the out welding arc of the GMAW to be stable and tracking the setting value accurately during the welding process. Furthermore, the simulation and experimental results are shown to prove the effectiveness of the proposed controllers.

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