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Simulation on Dynamic Characteristic of Negative Resistance Arc in Pulsed TIG Welding

机译:脉冲TIG焊中负阻电弧动态特性的仿真

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摘要

A mathematical model is established on the basis of the physical characteristic of the negative resistance arc when a low current of 0—50 A is applied in pulsed TIG welding. The simulation model converted from the mathematical model is run in MATLAB environment, and the discussion is focused on the way the peak current ranging from 29 A to 50 A and the time constant of arc in the span of 0.003—0.006 s influence the simulating results and the dynamic characteristic. The simulating data are close to that of welding experiments and correspond to the theoretical conclusion.
机译:在脉冲TIG焊接中施加0-50 A的低电流时,基于负电阻电弧的物理特性建立数学模型。由数学模型转换而来的仿真模型在MATLAB环境下运行,讨论的重点是峰值电流29 A至50 A和电弧时间常数在0.003-0.006 s范围内对仿真结果的影响。和动态特性。模拟数据接近于焊接实验,与理论结论相符。

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