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基于STEP的CAD/CAM知识模型和表达的研究
引用本文:刘乃若. 基于STEP的CAD/CAM知识模型和表达的研究[J]. 计算机工程, 2002, 28(9): 70-72,79
作者姓名:刘乃若
作者单位:清华大学计算机系,北京,100080
摘    要:讨论了EXPERSS标准语言的知识表达能力,给出了采和EXPRESS表达的知识模型以及建模规则,根据CAD/CAM产品模型的特点,提出了基于特征的知识,并给出了建模的约束规则表达,以及与知识库的集成.

关 键 词:STEP CAD CAM 知识模型 知识表达 知识库
文章编号:1000-3428(2002)09-0070-03

Research on Model and Expression of STEP-based CAD/CAM Knowledge
LIU Nairuo. Research on Model and Expression of STEP-based CAD/CAM Knowledge[J]. Computer Engineering, 2002, 28(9): 70-72,79
Authors:LIU Nairuo
Abstract:This paper discusses the ability on knowledge expression of the standard language, EXPRESS, and gives a knowledge model and its rules, which is expressed by EXPRESS. On view of the character of CAD/CAM product model, it proposes a feature model of CAD/CAM knowledge, and gives an expression of rules and constraints in the knowledge lib. A method that the model is integrated with knowledge lib is given in the end.
Keywords:Knowledge expression  Knowledge feature model  EXPRESS  Rule and constraint  
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