行为结构变型方法研究

APPROACH TO CREATE AND SEARCH THE OPTIMUM BEHAVIOR TRUCTURE

行为在基于功能-行为-结构(FBS)的概念设计过程模型中起着承上启下的重要作用,在行为层次进行执行机构系统的创新的研究具有重要的意义。从实现功能的角度,分析行为,提出用位移、速度、加速度、角位移、角速度和角加速度等刚体运动学参数描述行为;根据功能描述的模糊性特点,提出在行为描述中增加作用力参数和参数模糊系数。在分析行为关系的基础上,提出行为集合分组规则和分组评价规则,并由此提出行为结构创新方法-行为分组法。该方法通过重复调用简单易行的分组规则和评价规则,将行为集合逐步分解,形成一系列行为结构变型,辅助创新。应用实例说明该方法进行计算机辅助实现行为结构寻优和创新的有效性。

Motion behavior plays an important role in FBS conceptual design process model. Behavior is represented by displace, velocity, acceleration, angle displacement, angle velocity, angle acceleration, action force and parameter fuzzy coefficient. A series of rules are established for dividing the set of behaviors into subsets and evaluating the subsets. To create and search the optimum behavior structure, an behavior grouping approach based on the grouping rules, which is much easier to be realized by a computer, is proposed and is illustrated to be effective by an example.