Research on Evaluation of Process Stability of Aluminum Alloy Dual-Pulse MIG Welding by Current Sample Entropy

Contrary to the characteristics of difficult to assess the heat input welding quality of aluminum alloy dual pulse welding, an evaluation method based on current sample entropy is proposed. Designing an evaluation system based on current sample entropy, using parameters such as sample entropy standard deviation to make a reasonable and effective analysis of the smoothness of the current signal. Through experiments, using sample entropy algorithm for experimental analysis, the reliability of the influence of current stability on the quality of welding by sample entropy analysis is verified.