Author(s)

Kuanfang He, Siwen Xiao, Jigang Wu, Guanbin Wang

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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.

Non-Stationary Signal, Submerged Arc Welding, Time-Frequency Entropy, Stability

K. He, S. Xiao, J. Wu and G. Wang, "Time-Frequency Entropy Analysis of Arc Signal in Non-Stationary Submerged Arc Welding," Engineering, Vol. 3 No. 2, 2011, pp. 105-109. doi: 10.4236/eng.2011.32013.