模糊模式识别理论的空间实体最佳表达研究  

Research on the Optimal Expression of Space Entities Based on Fuzzy Pattern Recognition Theory

作　　者：卓丽云 顾立志[2] ZHUO Li-yun;GU Li-zhi(College of Mechanical and Manufacturing Engineering,Xiamen University of Technology,Fujian Xiamen 361022,China;College of Mechanical Engineering and Automation,Huaqiao University,Fujian Xiamen 361012,China)

机构地区：[1]厦门工学院机械与制造工程学院,福建厦门361022 [2]华侨大学机电及自动化学院,福建厦门361012

出　　处：《机械设计与制造》2021年第8期126-131,共6页Machinery Design & Manufacture

基　　金：福建省高等学校学科带头人培养计划资助力;厦门工学院教学改革研究项目资助(JG2017006)。

摘　　要：为了寻找和确定空间实体的最佳表达,提出符合实体三维表达的基本条件和评价指标,包括图形清晰性、立体感、易作图性和可度量性。为着具体化清晰性和立体感的评价指标,提出和构建投影角方法和轴向伸缩系数比方法。运用模糊模式识别空间实体的三维最佳表达方案,系统阐述和确定空间实体表达的具体方法和实际步骤。采用贴近度算法和层次因素分析方法构建模糊关系矩阵,进而得到最佳表达方案。以叉架类零件为例进行模糊模式识别和计算,结果表明,提出的理论方法有效实用。In order to find and determine the best expression of the space entity,the basic conditions and evaluation indexes conforming to the three-dimensional expression of the entity are proposed,including the clarity,stereoscopic sense,easiness of drawing and measurability.The method of projection Angle and the ratio of axial expansion coefficient’method are proposed and constructed for the evaluation index of specificity and stereoscopic sense.By using the fuzzy pattern recognition to identify the best expression of 3D spatial entity,the concrete methods and practical steps of spatial entity expression are expounded and determined systematically.The fuzzy relation matrix is constructed by using the nearness degree algorithm and hierarchical factor analysis method,and then the best expression scheme is obtained.The results show that the proposed method is effective and practical.

关 键 词：空间实体 最佳表达 投影角ε1ε2方法 轴向伸缩系数比 模糊模式识别 

分 类 号：TH16[机械工程—机械制造及自动化] TH164