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Designing of a static frequency observer for GMAW process in the globular transfer mode

Khalili, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1109/ICCAS.2010.5670297
  3. Publisher: 2010
  4. Abstract:
  5. In the welding process, droplet detachment regularity is important for a good welding quality. The frequency of detachment is one of influential indices for assessing the quality of GMAW in the globular transfer mode. In this paper, a relationship is estimated for measuring droplet detachment frequency in the globular GMAW. The droplet detachment frequency is estimated with a curve fitting by the least squares error (LSE) method. By using short time frequency transform (STFT) we can extract the frequency contents from the mass of drop that is one of the states in the welding model
  6. Keywords:
  7. Least squares error ; Short time frequency transform ; Droplet detachment ; Frequency contents ; Globular ; Globular transfer ; GMWW ; Least squares errors ; Static frequency ; Time frequency transform ; Welding model ; Welding process ; Welding quality ; Curve fitting ; Drop formation ; Electric arc welding ; Signal filtering and prediction ; Welding ; Condition monitoring
  8. Source: ICCAS 2010 - International Conference on Control, Automation and Systems, 27 October 2010 through 30 October 2010, Gyeonggi-do ; 2010 , Pages 286-289 ; 9781424474530 (ISBN)
  9. URL: http://ieeexplore.ieee.org/document/5670297