基于OWL的零件特征知识表示和知识库分析

摘要

针对当前各CAD系统之间缺乏统一的零件表示方法的问题,提出一种零件特征分层模型,并运用本体论知识,使用OWL DL描述逻辑语言对零件特征类及类的属性、类的关系进行了形式化描述.基于Protégé,以矩形台阶类零件为例,构建矩形台阶类零件知识库,证明了运用本体论知识构建零件特征知识库的可行性.%Abstract:To solve the problem of lacking of an uniform part representation method among different CAD systems,a part feature hierarchical model is presented,and then the Ontology knowledge and description logic language are used to formally descript part feature classes,attributes and relationship of the classes.Finally,based on the tool Protégé,take the rectangular step part for example,a rectangular stepped part knowledge base is built,the feasibility of part feature knowledge base is proved by using the ontology knowledge.