Research ArticleOpen AccessGoogle Scholar indexed
Time-Frequency Entropy Analysis of Arc Signal in Non-Stationary Submerged Arc Welding
- 1
- 2
- 3
- 4
Copy link · social · email
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.
KeywordsNon-Stationary SignalSubmerged Arc WeldingTime-Frequency EntropyStability
- D. S. Tusek, “Mathematical Modeling of Melting Rate in Twin-Wire Welding,” Journal of Materials Processing Tech-nology, Vol. 100, No. 1-3, 2000, pp. 250-256. doi:10.1016/S0924-0136(99)00485-9
- L. Yi, “Application of Joint Time-Frequency Analysis to Electrical Signals of CO2 Arc Welding,” Transactions of the China Welding Institution, Vol. 28, No. 2, 2007. pp. 75-78.
- L. Cohen, “Time Frequency Analysis: Theory and Applications,” Prentice Hall, New Jersey, 1995.
- J. H. Dong, H. M. Gu and X.Zhang, “A Comparison of Time-Frequency Analysis Methods and Their Applications,” Chinese Journal of Engineering Geophysics, Vol 4, No. 4, 2007, pp. 312-316.
- Z. Q. Tian and Y. Zhou, “The Certification of the Fundamental Properties of Comentropy,” Journal of Inner Mongolia Normal University (Natural Science Edition), Vol. 31, No. 4, 2002, pp.347-350.
- J. Lin and L. S. Qu, “Application of Time-Frequency Entropy to Crack Identification,” Journal of Mechanical Transmission, Vol. 22, No. 2, 1998, pp. 37-39.
- D. J. Yu, W. Zhang and J. S. Cheng, “Application of Time-Frequency Entropy to Gear Fault Diagnosis Based on Emd,” Journal of Vibration and Shock, Vol. 24, No. 5, 2005, pp. 26-29.