基于共生进化原理的功能结构设计

从生物的共生进化模式得到启发,从设计认知的高度,系统地总结了基于共生进化原理的共生功能之间的关系,包括“提供作用条件”关系,“消除有害副作用”关系和“消除有害环境影响”关系三类。这些关系为系统地解决创新设计中基于可行原理解的功能结构设计问题奠定了基础。在此基础上提出了集成原理方案设计和功能结构设计的计算机辅助概念设计的进程模型。该进程模型能根据实际创新设计环境以及候选原理解的作用条件、副作用和环境影响,在求解过程中动态地生成待求产品的功能结构,符合设计师的思维习惯。最后给出了模型应用实例。

FUNCTIONAL STRUCTURE DESIGN MODEL BASED ON THE SYMBIOTIC EVOLUTIONARY THEORY

Referring to the symbiotic theory of organisms, functional relations are systematically classified at a cognitive level as to supply necessary action conditions, to remove harmful side effects and to prevent or smooth away adverse impacts from environment. These relations are employed to guide designers to further develop the total functional structure of a desired product for creative design after the feasible principle solution to its purpose function is retrieved from the knowledge base. Then a symbiotic theory based process model for computer aided conceptual design is proposed, comprising the sub-processes of both functional structure design and principle conceptual design. According to the action conditions, side effects and environmental impacts of the retrieved principle solution candidate, this design model can dynamically and flexibly yield a total functional structure feasible for the desired product. An illustrative design case demonstrates that the proposed model is prone to successful development of creative products and consistent with the design cognitive model.