面向概念设计的机构知识表达与组织

Knowledge Representation and Organization of Mechanism for Conceptual Design

知识是一些事实或事实的抽象,是对客观事物某方面属性的概括,知识是具有一定目的的信息。知识也是进行计算机辅助概念设计自动化的前提和基础,涉及机构概念设计求解的知识较多,需要对它们进行合理地表达及组织,知识表达是后续推理过程的一个基础和关键,是计算机推理求解的前提。首先对功能知识、约束行为、机构元知识进行表达,提出面向对象的机构知识表达和组织策略,然后利用关系数据库表对它们进行存储并建立它们之间的联系,最后阐述了其映射推理过程,对于进一步开发计算机辅助设计软件系统具有一定的意义和价值。

Knowledge is some of the facts or the of facts,also is the summary of certain properties of the objective things and the information for a certain purpase.It is also the foundation for the automated computer-aided conceptual design.The knowledge that is involved in the mechanism conceptual design is large in amount that it is necessary to represent and organize it effectively.Knowledge representa- tion is the basis and the key for subsequent reasoning process and the premise for computer reasoning. Firstly,the representation model on function,restriction, mechanism knowledge is proposed,and then the strategy of object-oriented knowledge representation and organization on mechanism is presented,stored by relation database and the relationship among them is established,and finally the map reasoning process is clarified,which is helpful and valuable to the further-development of the CAD software system.