Knowledge Information Processing System for Conceptual Design Support Based on Function - Structure Analyses

本研究旨在构建支持概念设计任务的知识信息处理系统，主要研究成果如下：1.通过引入价值工程中的功能分析方法，从目的论、因果论和经济性三个方面对设计对象进行分析，实现了设计对象的多层次建模。基于这种分析方法和一种称为基于解释的泛化的机器学习方法，提出了一种从设计对象中获取各种设计知识的方法，并用逻辑编程语言实现了该方法。分析了所获取知识的可操作性与知识获取方式的关系，从而为所获取的每一块知识找到最适合的设计阶段。基于公理设计方法的思想，对上述知识获取系统进行了扩展，使其能够从对设计对象的分析中提取出战略性设计知识，从而有效地指导设计过程。参考基于解释的泛化和基于事例的推理方法，提出了一种对上述知识进行检索和索引的方法。并结合设计要求，介绍了对设计对象进行修改和组合的方法。为了为支持系统建立有效的人机界面，提出了一种对设计模型进行修改和组合的表示方法，使设计者(用户)能够掌握修改的本质效果和组合的一致性。

This research has been done with the purpose of constructing Knowledge information processing systems to support conceptual design tasks.Main results are summarized as follows :1. By introducing the functional analysis methods in Value Engineering, a way of analyzing designed objects from the teleological, causal and economical rationalities, which result in multilayered modeling of designed objects.2. Based on this method of analysis and a machine learning method called Explanation-Based Generalization, a way of acquiring varied design knowledge from designed objects is introduced and implemented using a logic programming language.3. The operationality of the acquired knowledge is analyzed in relation to the mode of knowledge acquisition, by which we can find the most suited phase of design for each piece of the acquired knowledge.4. Based on the idea of Axiomatic Design Approach, the above knowledge acquisition system is extended so that it can also extract strategic design knowledge from the analyses of designed objects, by which design processed are efficiently guired.5. A way of searching and indexing for the above acquired knowledge is introduced by referring to the methods of Explanation-Based Generalization and Case-Based Reasoning. Also, a way of modifying and combining designed objects is introduced in relation to design requirements.6. In order to build effective human interfaces for the support system, a representational method of modification and combination of design models is introduced, by which a designer (user) can grasp the essential effects of modification and the consistency of the combination.