| 摘要: |
| “未发现故障”(NFF)是近年来困扰航空界的一大难题，无论
是新机的电子设备还是老机的机械、线路系统，NFF逐渐成为一种新的多发故障模式，影响
飞机正常使用，增加了维修成本。从NFF的定义入手，具体分析其产生的原因。在对比国内
外NFF诊断与预防技术的基础上，采用基于本质参数测量的NFF诊断与排除方法来减少NFF故
障发生率，提出相应诊断与预防的流程。以某型飞机“发动机降转”故障为例验证了该
方法的有效性，并对当前NFF的现状提出几点对策与建议。 |
| 关键词: 航空装备 未发现故障 故障重现 故障诊断 本质参数 |
| DOI： |
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| 基金项目: |
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| Diagnosis and troubleshooting of “no fault found” in aviation equipment |
| MENG Fei,YANG Ji-en |
| () |
| Abstract: |
| NFF(No Fault Found) is a big puzzle in aviation group in these y
ears no matter the electronic equipment of new planes or circuitry system of age
d planes. NFF has become a newly excessive occurrence gradually. NFF lowers the
reliability so
as to influence missions of aircraft and increase the costs of maintenance. Th
is paper analyses the cause of NFF starting with its definitio
n. Through comparing diagnosis and prevention technique both home and abroad, it
uses the method of NFF diagnosis and elimination based on essence parameters
m
easurement to reduce the failure rate and brings out the flow of NFF diagnoses a
nd prevention. This method is validated by taking the failure “rotate speed fal
l” of a plane as example. Finally it gives some countermeasures and advices acc
ording to the actuality of NFF. |
| Key words: aviation equipment no fault found(NFF) failure replay failure diagnosis esse
nce parameter |
《电讯技术》编辑部 