基于3M特征的设计知识表达模型

Design knowledge representation model based on 3M features

针对目前支持创新设计的知识多是分类表达和管理,缺乏统一的知识表达和管理模型的问题,提出了一种基于3M(multi-attribute multi-dimensional multi-hierarchy,多属性多维度多层次)特征的知识统一表达与管理方法。根据支持创新设计的知识需求,将知识属性分为创新属性和基本属性两大类:创新属性是对知识内容的抽象化提取并实现知识间的多属性关联,包括知识的功能、输入输出流、TRIZ原理、领域属性;基本属性是对多学科知识物理属性的具体表述,包含背景、功能、原理、结构属性。通过建立基于知识创新属性和基本属性统一架构的知识表达模板,实现对不同类型知识的综合表达与交叉迁移,并根据该方法构建了相应知识库原型系统。以核反应堆堆下结构改进设计为例,说明了知识库的应用流程。结果表明此知识模型能够实现对设计知识的统一表达和管理,有利于知识的查找和应用,能有效地辅助设计者进行创新设计。

Aiming at the problem that knowledge for supporting innovative design was classified representation and management , and lack of unified knowledge representation and management model , a kind of unified knowledge representation and management method based on 3M （multi-attribute multi-dimensional multi-hierarchy） features was put forward .According to the knowl-edge demand for innovative design , knowledge attributes were divided into innovation attributes and basic attributes . The innovation attributes were the abstraction of knowledge and realized multi attribute correlation between knowledge,including the function,input and output f low, TRIZ principle,field attributes of knowledge .The basic attributes were the specific description of the physical attributes of the multidisciplinary knowledge,including the background, function, principle,and structural attributes .With the establishment of knowledge representation template based on the unified framework of knowledge innovation attributes and basic attributes , the com-prehensive representation and cross transferring of different types of knowledge could be realized , and the corresponding knowledge base prototype system was constructed .The application processof the knowledge repository was demonstrated by the example of the improved design of the nu-clear reactor under stack structure, which indicated that this knowledge model could represent and manage design knowledge uniformly,and could assist designers with knowledge search and application in innovative design effectively .