基于运行数据的国产民机动态维修任务间隔优化

doi:10.12305/j.issn.1001-506X.2023.04.33

摘要/Abstract

摘要：

为了提升国产民机的基于运行数据的计划维修任务间隔优化技术，丰富国产民机维修大纲维修间隔优化理论，针对不同维修任务的部件寿命特点，提出了基于运行数据的最佳失效分布动态维修间隔优化方法。收集相应维修任务的例行检查与非计划检查维修记录；然后结合任务部件的完整失效数据与右删失数据，采用极大似然估计进行置信区间内的失效分布参数拟合，得到维修任务的部件寿命分布函数；结合民航局咨询通告对不同维修任务的可靠度要求，考虑部件的累计飞行小时分析维修任务的动态维修间隔。研究表明在给定维修任务可靠度条件下，动态维修任务的维修间隔可随部件可靠性寿命规律而变化，反映相应部件的寿命特点，有助于在保障任务可靠度的基础上为缩短或延长维修任务间隔提供建议，为维修任务的维修间隔优化提供理论参考。

关键词: 国产民机, 维修任务间隔优化, 任务失效分布, 极大似然估计, 累计飞行小时

Abstract:

To improve the planned maintenance task interval optimization technology of domestic civil aircraft based on operational data and enrich the maintenance interval optimization theory of domestic civil aircraft maintenance outline, a dynamic maintenance interval optimization method of optimal failure distribution based on operational data for the component life characteristics of different maintenance tasks is proposed. The routine inspection and unscheduled inspection maintenance records of the corresponding maintenance tasks are collected. Then the complete failure data and right deletion data of the task components are combined, and the failure distribution parameters within the confidence interval are fitted using the great likelihood estimation to obtain the component life distribution function of the maintenance tasks. The dynamic maintenance intervals of the maintenance tasks are analyzed by considering the accumulated flight hours of the components in conjunction with the reliability requirements of the Civil Aviation Authority advisory circular for different maintenance tasks. The study shows that under the condition of given maintenance task reliability, the maintenance interval of dynamic maintenance tasks can vary with the reliability life law of components, which reflects the life characteristics of corresponding components and helps to provide suggestions for shortening or extending the maintenance task interval on the basis of guaranteeing the task reliability, and provides theoretical reference for the maintenance interval optimization of maintenance tasks.

Key words: domestic civil aircraft, maintenance task interval optimization, task failure distribution, maximum likelihood estimation (MLE), cumulative flight hours

中图分类号:

V267

冯蕴雯, 潘维煌, 路成, 刘佳奇. 基于运行数据的国产民机动态维修任务间隔优化[J]. 系统工程与电子技术, 2023, 45(4): 1231-1238.

Yunwen FENG, Weihuang PAN, Cheng LU, Jiaqi LIU. Optimization of dynamic maintenance task interval for domestic civil aircraft based on operation data[J]. Systems Engineering and Electronics, 2023, 45(4): 1231-1238.

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故障影响类别	任务描述	检查门槛值/FH	重复检查间隔/FH
9	详细检查后货舱门滑轨机构及锁定机构	3 200	3 200

飞机序号	状态 S/F	来源	累积使用小时/FH	数据类型
1	F	例行定检	2 412	完整数据
1	F	例行定检	2 599	完整数据
2	F	例行定检	5 657	完整数据
2	F	例行定检	6 127	完整数据
2	F	例行定检	8 912	完整数据
2	F	例行定检	9 263	完整数据
⋮	⋮	⋮	⋮	⋮

参数	分布类型
参数	威布尔	Loglogistic	指数
AD	19.070 9	19.076 5	19.357 8

故障影响类别	任务描述	检查门槛值/FH	重复检查间隔/FH
8	操作检查应急出口滑道灯	500	500

飞机序号	状态S/F	来源	累积使用小时/FH	数据类型
1	S	例行定检	1 844.47	右删失
1	S	例行定检	1 844.47	右删失
2	F	非计划检查	1 954.62	完整数据
2	F	非计划检查	358.13	完整数据
2	S	例行定检	3 604.1	右删失
2	S	例行定检	1 291.35	右删失
⋮	⋮	⋮	⋮	⋮