A study on development of an H-infinity robust control system for arc welding

Research output: Contribution to journalArticle

Abstract

Arc welding is a complex process, the dynamics of which are affected by many manufacturing conditions that typically vary during welding or vary from application to application. Further, the modeling of the dynamics and design of the feedback control system require both advanced control theory and deep understanding of welding process principles. The feedback control system should be designed such that it can tolerate the variations in manufacturing conditions and the resultant process dynamics. This implies that robust control is a potential solution to address the conflict between the increasing demand of quality welds and the limited number of qualified personnel. Hence, this study develops a mathematical frame of robust control of welding processes for welding engineers who understand welding process principles and have elementary feedback control background. The control of the weld geometry is used as an example to demonstrate the details of the robust control principle and its implementation.

Original languageEnglish
Pages (from-to)140-150
Number of pages11
JournalJournal of Manufacturing Systems
Volume21
Issue number2
DOIs
Publication statusPublished - 2002 Jan 1

Fingerprint

Electric arc welding
Robust control
Welding
Control systems
Feedback control
Welds
Control theory
Personnel
Engineers
Geometry

Keywords

  • Arc welding
  • H-infinity control system
  • Linear fractional
  • Uncertainty model
  • Weld geometry

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Hardware and Architecture
  • Industrial and Manufacturing Engineering

Cite this

A study on development of an H-infinity robust control system for arc welding. / Jou, Min.

In: Journal of Manufacturing Systems, Vol. 21, No. 2, 01.01.2002, p. 140-150.

Research output: Contribution to journalArticle

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