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Modeling and intelligent control of a robotic gas metal arc welding system

Sayyaadi, H ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2008
  3. Abstract:
  4. Welding is an important manufacturing process that can be automated and optimized. This paper focuses on the development of a robotic arc welding system, wherein a three-degree-of-freedom Selective Compliance Assembly Robot Arm (SCARA) is interfaced to a Gas Metal Arc Welding (GMAW) process. The entire system is composed of a robot linked to a GMAW system. Set points are derived using the desired mass and heat input, along with the weld speed. The stick-out and the current of the welding process are controlled using an Adaptive Neural Network Controller (ANNC). The trajectory of the robot or the weld profile is also controlled by implementing a Mixed Fuzzy-GA Controller (MFGAC) on a three-axis SCARA robot. The system is, then, analyzed and the results show adequate improvement in the efficiency and performance of the proposed controller in welding a curvilinear weld profile. © Sharif University of Technology, February 2008
  5. Keywords:
  6. Intelligent control ; Adaptive neural network controller (ANNC) ; Robotic gas metal arc welding system ; Selective compliance assembly robot arm (SCARA) ; Adaptive control systems ; Degrees of freedom (mechanics) ; Fuzzy control ; Gas metal arc welding ; Intelligent control ; Neural networks ; Optimization ; Robotics ; Efficiency measurement ; Fuzzy mathematics ; Modeling ; Performance assessment ; Welding
  7. Source: Scientia Iranica ; Volume 15, Issue 1 , 2008 , Pages 75-93 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2977.html