机械产品模糊可重构设计原理与方法

为了解决可重构设计理论和方法存在的局限性问题,实现快速设计新产品,在分析设计需求的模糊性、设计域关系的模糊性和设计过程的模糊性基础上,将模糊集理论引入可重构设计中,提出了机械产品模糊可重构设计原理与方法.以350 km/h高速列车转向架总体设计为例,运用质量屋工具构建转向架模糊矩阵,求解出目标参数及其重要度,给出了转向架主要性能参数的隶属度函数,并采用距离贴近度模糊相似度识别.研究结果表明: 300 km/h高速列车转向架的距离贴近度为0.91,与设计目标最相似,进一步通过参数竞争性分析确定出修改设计方向,快速实现了转向架的资源重用和设计创新. 

Fuzzy Reconfigurable Design Principles and Methods of Complex Mechanical Products

In order to overcome the limitations of the existing theories and methods for reconfigurable design and achieve a rapid design of new products, fuzzy reconfigurable design principles and methods of mechanical products are proposed by introducing the fuzzy set theory into the reconfigurable design after analysis of the fuzziness in design inputs, mapping relationships between design domains, and design solution procedures. Taking the overall design of a 350 km/h high-speed train bogie as an example, the house of quality (HOQ) tools are used to build a fuzzy matrix for the bogie to solve for the target parameters and their importance. The membership functions of main performance parameters of bogie are given, and a similarity degree identification of bogie is made using distance closeness degree. The results show the 300 km/h bogie, with a distance closeness degree of 0.91, is closet to the design goal. Furthermore, the direction of design modification is determined by parameters competitive analysis, so the reuse of resources and design innovation of bogie can be achieved rapidly.