Computer-based control system for keyhole plasma arc welding

Chuanbao Jia, Chuansong Wu, Yuming Zhang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A new kind of control system for keyhole plasma arc welding (K-PAW) was developed based on the computer and the Graphics Language-LabVIEW. It can set and output the required current waveforms with desired decreasing slopes so that the corresponding opening and closing of keyhole can occur periodically. With this control strategy of welding current waveforms, the workpiece is fully penetrated while no burn-through occurs. Keyhole plasma arc welding experiments were conducted to verify the stability and reliability of the developed system.

Original languageEnglish
Pages (from-to)7-10
Number of pages4
JournalChina Welding (English Edition)
Issue number4
StatePublished - Dec 2007


  • Control system
  • Keyhole
  • Plasma arc welding

ASJC Scopus subject areas

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering


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