基于事例推理的点焊工艺参数的智能求解  

An intelligent inference for resistance spot welding procedure parameters on CBR

作　　者：曹海鹏[1] 赵熹华[1] 赵蕾[1] 

机构地区：[1]吉林大学材料学院,长春130025

出　　处：《焊接学报》2003年第6期1-3,14,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50175048)

摘　　要：通过深入分析点焊工艺过程,结合基于事例推理的特点,将点焊工艺事例属性划分为两类:事例特征Ⅰ和事例特征Ⅱ。设计了相似点焊工艺事例的检索策略:在事例特征Ⅰ的约束下,以事例特征中Ⅱ所包含的材质的热物理性质和板厚作为检索相似事例的依据。应用模糊推理的方法对检索到相应的相似事例库中所含有的工艺知识、规则进行提取、总结,进而指导对新的点焊工艺事例的求解,从而较好的解决了点焊工艺设计中基于事例推理时,难以建立合适的模型对检索到的相似事例进行修正的难点,使点焊工艺参数的智能求解过程更加符合领域专家的思维,过程更加灵活,具有开放性。Characters of resistance spot welding procedure case are divided into two kinds: charactersⅠof case and charactersⅡof case by analyzing resistance spot welding and the CBR(case based reasoning ). The retrieving strategy is proposed, that is, under the limit of charactersⅠthermal physical properties of material and thickness of plate in charactersⅡof case are taken as indexes. The knowledge and rules of spot welding procedure that are drawn out from the retrieved cases database with fuzzy inference are used to guide the solution of new procedure case. It gives a good method to solve the problem that it is difficult to build an appropriate model to revise the similar retrieved cases on CBR. In this way, the intelligent solution to spot welding parameters resembles to the way of experts in this field and has more flexibilities.

关 键 词：点焊 工艺参数 事例推理 模糊推理 人工智能 

分 类 号：TG453.9[金属学及工艺—焊接] TP18[自动化与计算机技术—控制理论与控制工程]