中文摘要：

分析现有基于实例推理的产品设计系统，针对其缺乏对实例功能、行为等描述的缺点提出面向实例推理的产品设计本体模型，并利用本体技术建立基于实例推理的产品设计实例本体及产品设计实例本体模型。依照产品设计特点研究产品设计实例本体模型的重要性质，依据实例推理的产品设计给出基于本体的产品设计实例本体检索机制。在检索中利用本体模型的EDCOM数组，通过相似度算法进行匹配找出合适的产品设计实例，在本体模型库维护中给出本体模型的集成算法。最后以汽车零部件企业为实例，并利用本体技术开发了基于实例推理的产品设计原型系统，通过设计系统的产品设计要求、检索实例等功能模块实现了基于实例推理的产品设计。

英文摘要：

The existing product design system based on case reasoning is analyzed. Aiming at the shortages of the design system that couldn＇t depict the function and deed of product design case well, a product design ontology model based on case reasoning is proposed. Product design case ontology and model are established in terms of ontology technologies. According to the characteristics of product design based on case reasoning, the important attributes of ontology model are studied. The searching method of product design case provided after product design based on case reasoning is analyzed. In the method the appropriate product design case is searched through EDCOM array and similar degree. In the process of maintenance of ontology warehouse the method on the integration of ontology is given. Finally a product design prototype system based on case reasoning and ontology technology is developed for auto parts enterprise. Through designing requirement, case searching and other functional models, this system realizes product design based on case reasoning.