During the CO2 Short-Circuiting Transfer Welding control process, there are a lot of phenomena such as nonlinear, time-variation, time-delay, and strong coupling and so on.

• CO2短路过渡焊接过程是一个非线性、时变、滞后和强耦合的现象，经典控制理论和现代控制理论难以达到理想的控制效果，而采用模糊控制仍是一种简单有效的控制方法。