基于模糊灰色关联的航空公司机队可靠性指标的优选

机队是航空公司运输能力的关键,机队可靠性是航空公司安全保障的重要环节之一。鉴于影响航空公司机队可靠性指标具有多模糊性和随机性等灰色系统特征,结合模糊灰色关联特性,建立了机队可靠性指标模糊灰色关联分析优选模型。同时为了提高关联度分辨力和满足关联分析更符合实际,对分辨系数取值做了合理的判定。以航空公司机队可靠性统计数据为例,计算得出机队可靠性指标与可靠性等级的关联度和关联序,确定影响机队可靠性指标主要相关因素,找出了机队可靠性最佳优先控制指标。该研究为确定机队可靠性优先控制指标的选取提供了一种较为科学的定量化依据,有助于掌握机队可靠性规律提供支持,对于提高航空公司机队可靠性管理水平具有现实的意义。

Optimization for index of airline fleet reliability based on fuzzy grey association

Fleet is vital to keep the capability of airline transportation.Fleet reliability is an important part of safety control of airline.In consideration of that the indexes affecting fleet reliability have features on fuzzy and random of grey system,the optimization model of fuzzy-grey association on fleet reliability was set up according to feature of fuzzy-grey association.To improve the discriminative ability of relational degree analysis and make it coincide with the actual situation well,the coefficient was identified reasonably.Based on data and statistics on fleet reliability of airline,the grey association degree and grey correlative order of reliability index and grade were obtained and the main factors on affecting fleet reliability were determined.Finally,control key index on fleet reliability was put up.The research provides a more scientific quantitative method for determination of choosing controlled index of fleet reliability,and is beneficial for reaching laws of it.It is practical to enhance the level of management of airline fleet reliability.