Nonlinear interval model control of the double sided arc welding process

B. Losch, Y. M. Zhang

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

1 Scopus citations

Abstract

The Double Sided Arc Welding (DSAW) process developed at the University of Kentucky provides many advantages over both conventional arc welding and laser arc welding processes. A nonlinear model was chosen to represent the dynamics of the DSAW method based on experimental analysis of the procedure. Due to the highly dynamic nature of the DSAW process, the model parameters determined via least squares method from a series of experiments were varied. It was determined that the parameters of the nonlinear model were uncertain, but bounded in a given interval. To determine the intervals, a number of experiments were carried out using the same operating parameters. Each experiment provided a set of model parameters, and the interval ranges were determined by the minimum and maximum calculated values for each parameter over the set of experiments. A series of closed-loop control experiments were run to verify the validity and robustness of the interval model control.

Original languageEnglish
Title of host publicationTrends in Welding Research - Proceedings of the 7th International Conference
Pages693-696
Number of pages4
StatePublished - 2005
Event7th International Conference on Trends in Welding Research - Pine Mountain, GA, United States
Duration: May 16 2005May 20 2005

Publication series

NameASM Proceedings of the International Conference: Trends in Welding Research
Volume2005

Conference

Conference7th International Conference on Trends in Welding Research
Country/TerritoryUnited States
CityPine Mountain, GA
Period5/16/055/20/05

Keywords

  • Double sided arc welding
  • Keyhole
  • Nonlinear system
  • Predictive control

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanical Engineering

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