Nonlinear modelling and control of full-penetration dual bypass gas metal arc welding of aluminium

X. Liu, Y. S. Liu, K. Qian, Y. M. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Dual bypass gas metal arc welding (DB-GMAW) is a novel welding process which is capable of achieving different full penetration level by adjusting bypass current while keeping the total welding current constant for a constant mass input. In this paper, an experimental system is constructed to implement DB-GMAW and full penetration weld is produced on aluminum. To describe the relationship between bypass current (input) and full penetration level (output), a nonlinear model is proposed, identified, and validated based on process analysis and through experiments. To assure the desired full penetration level be produced under varying welding conditions, the parameters are on-line identified/updated and an adaptive control algorithm is proposed. Experiments verified the effectiveness of the developed adaptive nonlinear control system.

Original languageEnglish
Title of host publicationProceedings of the 13th IFAC Symposium on Information Control Problems in Manufacturing, INCOM'09
Number of pages6
Edition4 PART 1
StatePublished - 2009

Publication series

NameIFAC Proceedings Volumes (IFAC-PapersOnline)
Number4 PART 1
ISSN (Print)1474-6670

Bibliographical note

Copyright 2021 Elsevier B.V., All rights reserved.


  • Adaptive control
  • Image processing
  • Nonlinear modeling
  • Penetration
  • Welding

ASJC Scopus subject areas

  • Control and Systems Engineering


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