基于粗糙集的案例推理在民机结构MSG-3分析中的应用  

Civil Aircraft MSG-3 Analysis Based on Rough Set and Case Based Reasoning

作　　者：吴昊 WU Hao(Shanghai Aircraft Design and Research Institute,Commercial Aircraft Corporation of China Ltd,Shanghai,200232,China)

机构地区：[1]中国商用飞机有限责任公司上海飞机设计研究院

出　　处：《南京航空航天大学学报》2019年第3期403-409,共7页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：确定飞机结构偶然损伤检查任务和间隔是制定飞机结构维修大纲的关键问题之一。在国内缺乏相关使用数据的前提下,本文将基于粗糙集的案例推理应用于民用飞机MSG-3(Maintenance steering group)分析过程。本文从民用飞机MSG-3分析的需求出发,分析了基于案例推理的MSG-3分析基本过程,讨论了民用飞机MSG-3分析案例库的构建、案例表达、案例检索、匹配、案例修改、维修任务和间隔的确定等关键技术。同时,本文应用粗糙集理论,对MSG-3分析的特征属性进行权重分配,从而避免了人的主观性对案例检索准确性的不良影响。最后通过对某重要结构项目进行偶然损伤实例分析,效果良好。One of the most important things in developing aircraft structure maintenance program is to determine the inspection task and intervals for structure accidental damage.Given the lack of using datum,the method of using rough set and case based reasoning(CBR)is introduced to civil aircraft MSG-3 analysis.According to the requirement of civil aircraft MSG-3(Maintenance steering group)analysis,the research into the method of civil aircraft MSG-3 analysis using CBR is conducted and key techniques,including the case base development,case representation,case retrieval,maintenance task and interval determination,are investigated.Meanwhile,to avoid human’s subjectivity influence,rough set is used to allocate the weight of the MSG-3 analysis factors.Finally,we use the significant structure item of aircraft as an example to verify the method.

关 键 词：粗糙集 案例推理 民用飞机 维修大纲 维修任务 

分 类 号：V267[航空宇航科学与技术—航空宇航制造工程]