设计了基于CCD视觉传感的焊缝背面熔宽控制系统,获得了清晰的焊缝背面图像,通过图像处理提取了背面熔宽特征参数,并以熔宽和熔宽的变化量作为输入,实时调整焊接电流,保证焊缝背面熔宽均匀一致,从而确保焊缝质量的稳定性。该技术已成功应用于运载火箭贮箱的焊接,效果良好。 Based on the CCD vision sensor, the welding width control system of the weld back was designed, the back surface of the weld image was clearly obtained, the backside melting width characteristic parameters were extracted by image processing, and the changes of melting width and melting width were taken as input. Adjust the welding current to ensure that the back of the weld melt width uniform, so as to ensure the stability of the weld quality. The technology has been successfully applied to the launch vehicle tank welding, the effect is good.