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在双波长滤光片正面实时检测焊缝熔宽技术的基础上建立了焊缝熔宽模糊控制系统。本文对熔宽模糊控制器的结构以及模糊控制变量的选择进行了讨论，在此模糊控制系统中采用双输入单输出的模糊控制器模型，即采用熔宽的变化及其变化率作为模糊控制器的两输入量，采用焊接电流作为模糊控制器的输出量。本文给出了熔宽模糊控制的系统结构图并详细介绍了熔宽模糊控制器的设计过程，根据用双波长滤光片正面实时检测焊缝熔宽技术得到的焊接电流对焊缝熔宽影响的实测结果，对各模糊量的模糊化过程以及量化过程进行了讨论，给出了模糊控制状态表，据此状态表制定出模糊控制作用表。以焊接电流为控制量，可以根据此控制作用表对焊缝熔宽进行实时控制。
Based on the real-time detection of the weld width at the front of the dual-wavelength filter, a fuzzy control system for weld width is established. In this paper, the structure of fuzzy controller and the choice of fuzzy control variables are discussed. In this fuzzy control system, the dual input and single output fuzzy controller model is adopted, that is, the change of melting width and its rate of change are used as the fuzzy controller Of the two inputs, using the welding current as the fuzzy controller output. In this paper, the system structure of the fused-width fuzzy control is given and the design process of the fused-width fuzzy controller is introduced in detail. According to the real-time detection of the weld width by the dual-wavelength filter, The fuzzy results and the quantification process are discussed. The fuzzy control state table is given. Based on the state table, the fuzzy control action table is established. To welding current control volume, according to the control effect of the weld bead weld real-time control.