Open AccessApproximate entropy analysis of current in short-circuiting arc welding
Author(s) -
Cao Biao,
Lü Xiao-Qing,
Min Zeng,
Wang Zhen-Min,
Huang Shi-sheng
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.1696
Subject(s) - entropy (arrow of time) , short circuit , welding , mechanics , gas metal arc welding , nonlinear system , arc welding , voltage , materials science , thermodynamics , physics , composite material , quantum mechanics
Based on the approximate entropy theory and related algorithm, approximate entropy analysis of current in short-circuiting arc welding in CO2 shielding gas are performed from the point of view of nonlinear time sequences. Calculation and comparison of approximate entropy of current under different wire-feeding speeds, setting voltages and different gas flow rates show that approximate entropy of current can be taken as a creterion of stability of short-circuiting transfer. The results show that greater approximate entropy and less fluctuation indicate a more stable welding process.