关键词: 装配, 设计意图, 语义表示, 资源描述框架, 本体

Abstract: Based on the traditional Computer Aided Design (CAD) representations for assembly design intent information, a semantic representation framework for assembly design based on ontology and Resource Description Framework (RDF) expression mode was proposed. By ontology definitions of domain concepts and property relationships and RDF description with instantiated concepts, the hierarchical composition intent of assembly, connection relation intent, coordination precision and space constraint relationship intent in assembly design was formally represented. The automatic and manual semantic annotation methods for final CAD product assembly model were discussed. By an example of semantic representation for a simple assembly, the RDF / eXtensible Markup Language (XML) document was established, which laid foundation for semantic reasoning, inquiry and intelligent understanding of assembly design information.

Key words: assembly, design intent, semantics representation, resource description framework, ontology