Predictive control for manual plasma arc pipe welding

Xiangrong Li, Yu Ming Zhang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Plasma arc welding (PAW) has several advantages over traditional gas tungsten arc welding (GTAW) process. However, due to its sensitivity to welding parameters, this process has not been widely used in industry, especially for manual welding applications where variations in welding parameters are substantial. This paper introduces and implements a model predictive control (MPC) method to adjust welding current in order to compensate the effects from these variations during manual plasma welding operation. A linear model with adequate accuracy has been selected for the design of control system. Closed-loop control experiments verified the effectiveness of developed control system.

Original languageEnglish
Article number041017
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Issue number4
StatePublished - Aug 2014


  • manual pipe welding
  • plasma arc welding
  • predictive control
  • process control
  • trajectory tracking

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering


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