航空装备“未发现故障”的诊断与排除  

Diagnosis and Troubleshooting of "No Fault Found" in Aviation Equipment

作　　者：孟飞[1] 杨继恩[1] 

机构地区：[1]空军第一航空学院航空仪电工程系,河南信阳464000

出　　处：《电讯技术》2012年第6期1042-1046,共5页Telecommunication Engineering

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。NFF（No Fault Found） is a big puzzle in aviation group in these years no matter the electronic equip- ment of new planes or circuitry system of aged 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. This pa- per analyses the cause of NFF starting with its definition. Through comparing diagnosis and prevention technique both home and abroad, it uses the method of NFF diagnosis and elimination based on essence parameters mea- surement to reduce the failure rate and brings out the flow of NFF diagnoses and prevention. This method is vali- dated by taking the failure ＂rotate speed fall＂ of a plane as example. Finally it gives some countermeasures and advices according to the actuality of NFF.

关 键 词：航空装备 未发现故障 故障重现 故障诊断 本质参数 

分 类 号：TN06[电子电信—物理电子学] V24[航空宇航科学与技术—飞行器设计]