基于域结构模板的机械产品概念设计方案生成

在公理化设计（Axiomatic design）理论的基础上，研究了机械产品要领设计方案生成的几个关键技术。讨论了要领设计的顾客需求驱动问题，提出了一种解决策略；针对公理化设计理论的不足，提出了域结构模板的概念，对公理化设计进行了扩展，并在此基础上构造了概念空间和概念推理网络；通过约束推理从概念推理网络中提取出有效概念空间，并给出了有效概念空间的分解算法；基于概念图（Conceptual graphs）分析了方案中设计实体之间的功能联系。以高速链式平缝机为例对所述概念设计方案生成方法进行了验证。

GENERATION OF MECHANICAL PRODUCT CONCEPTUAL DESIGN SCHEMES BASED ON DOMAINS STRUCTURE TEMPLATE

On the basis of Axiomatic design (AD) theory, several key techniques for generating conceptual design schemes of mechanical products are studied. Customer-driven issue of conceptual design is discussed. It proposes a strategy for establishing the mapping from customer domain to functional domain. The concept of Domains Structure Template which is directed against the defects of AD is proposed to extend AD, and concept space and concept reasoning network are constructed. Effective Concept Space is filtered out by restraint reasoning from concept reasoning network, and effective concept space resolving algorithm is symbolically described The functional relationships between design entities involved in individual scheme are analyzed based on conceptual graphs. A high speed chainstitch sewing machine is used as a case study to show the effectiveness of the proposed method and associated algorithms.