基于信息公理的设计方案模糊评价方法研究

针对现有模糊信息公理方案评价方法在指标确定和隶属函数选择方面存在的不足,提出了一种改进的设计方案评价方法. 首先根据公理设计原理,建立了目标域与指标域间之字形映射模型,确定了产品设计方案综合评价指标体系;其次根据指标值与设计范围的关系不同,将评价指标划分为不同类型,并采用正态模糊分布曲线描述各自隶属度,提出了相应的指标信息量计算方法;最后给出了基于信息公理设计方案模糊评价方法流程. 通过机械式停车设备的方案评价验证了该方法的可行性和有效性.

Fuzzy Evaluation for Design Scheme Based on Information Axiom

Aiming at shortage of index identified and membership function selected in existing evaluation, a new method of fuzzy evaluation for design scheme base on information axiom is proposed. First, a zigzag mapping model is designed between target area and index area following the principle of axioms design and a comprehensive evaluation index system is established for product design scheme. Second, according to the different relations between index and design range, the evaluation indexes are divided into different types whose membership grade can be described by the normal fuzzy distribution curve. The calculation method is given for the corresponding information of index and can be applied in the scheme evaluation of the mechanical parking system. Last, the process of fuzzy evaluation is modeled based on information axiom.