TITLE:
Time-Frequency Entropy Analysis of Arc Signal in Non-Stationary Submerged Arc Welding
AUTHORS:
Kuanfang He, Siwen Xiao, Jigang Wu, Guanbin Wang
KEYWORDS:
Non-Stationary Signal, Submerged Arc Welding, Time-Frequency Entropy, Stability
JOURNAL NAME:
Engineering,
Vol.3 No.2,
March
18,
2011
ABSTRACT: The use of time-frequency entropy to quantitatively assess the stability of submerged arc welding process considering the distribution features of arc energy is reported in this paper. Time-frequency entropy is employed to calculate and analyze the stationary current signals, non-stationary current and voltage signals in the submerged arc welding process. It is obtained that time-frequency entropy of arc signal can be used as arc stability judgment criteria of submerged arc welding. Experimental results are provided to confirm the effectiveness of this approach.