机械系统概念设计自动化方法

NOVEL AUTOMATIC CONCEPTUAL DESIGN METHOD FOR MECHANICAL DEVICES

给出了一种基于设计规则的机械系统概念设计自动化方法。该方法体现了发散思维创新设计思想,依赖符号方案推理器来实现。符号推理器主要由设计规则定义、图形载体库、构件相似性判定及符号推理四部分组成。通过定义设计规则,选择图形载体,对图形载体进行并、或、非的逻辑运算,邻接、重叠、拓扑性的关系运算,系统可以自动地获得概念设计符号方案。镶嵌于推理器内部的构件相似性分析组元,对图形载体各构件进行相似性分析,避免了冗余方案的产生,能够得到符合设计规则要求的全部设计方案。通过细化设计规则,使概念设计具有收敛性,并且可以得到优化的设计方案。该方法适用于一般复杂机械系统的概念设计。

An automatic method is presented for conceptual design of mechanical devices based on reasoning of the design rules. After defining the design rules of problems, selecting the type of graphical carriers, and doing 'adjacent', 'overlap', 'topological' logical calculations and doing 'and', 'or', 'no' logical reasoning for the selected carrier according to the design rules, the system can generate conceptual design solutions automatically. The similarity analyzer enchased in per step of reasoning can efficiently avoid redundancy solutions to produce. Through programming of the design rules, the solution process of creative conceptual design of problems is convergent, and optimized conceptual solutions will be given out. The examples show that this method is fit for automatic conceptual design to complicated mechanical systems.