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Approximate entropy analysis of current in short-circuiting arc welding

Cao Biao Lü Xiao-Qing Zeng Min Wang Zhen-Min Huang Shi-Sheng

Approximate entropy analysis of current in short-circuiting arc welding

Cao Biao, Lü Xiao-Qing, Zeng Min, Wang Zhen-Min, Huang Shi-Sheng
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  • Received Date:  08 August 2005
  • Accepted Date:  26 October 2005
  • Published Online:  20 April 2006

Approximate entropy analysis of current in short-circuiting arc welding

  • 1. 华南理工大学机械工程学院,广州 510640

Abstract: 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.

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