摘要
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 research of real-time measuring the weld pool width with a dual wavelength optical filter,a fuzzy control system of welding pool width has been developed.The structure of fuzzy controller and fuzzy variables are discussed in this paper. A fuzzy controller with two input variables and one output variable is considered to be suitable to control weld pool width.The input variables of the fuzzy controller are the variation of the welding pool width and its rate,and the output variable is the welding currert. In this paper, the designing process is described in detail. The testing result about the effect of welding current on the real-time measured welding pool width is used to build the fuzzy control relation and the control function forms.Based on these fuzzy control forms, weld pool width is easily controlled by adjusting welding current.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1999年第1期61-67,共7页
Transactions of The China Welding Institution
