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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability >Enhanced diagnosis of faults using the digraph approach applied to a dynamic aircraft fuel system
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Enhanced diagnosis of faults using the digraph approach applied to a dynamic aircraft fuel system

机译：使用有向图方法将故障诊断应用于动态飞机燃油系统

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摘要

Malfunctions within commercial aircraft can considerably increase both the financial cost of downtime and the disruption caused to passenger travel. For this reason prompt detection, diagnosis, and rectification of faults is imperative to the successful operation of such a system. In this paper the fault diagnostic problem is tackled based on the application of the digraph procedure. Digraphs model the information flow, and hence fault propagation, through a system. A computational method has been successfully developed to conduct the fault diagnostics process and produce a list of the fault combinations determined. The scope of the method has been demonstrated by consideration of two modes of operation to the application of a commercial aircraft fuel system, namely that of a Boeing 777. In addition the paper highlights the contribution of the development of a reduction method to enhance the likelihood of identifying the possible failure causes in three ways from different viewpoints. The three methods provide the option of determining the component at fault, the most probable failure mode cause, and also evidence for a particular component fault.
机译：商用飞机内部的故障可能会大大增加停机的财务成本以及对旅客旅行造成的干扰。因此，迅速检测，诊断和纠正故障对于这种系统的成功运行至关重要。本文基于有向图程序的应用解决了故障诊断问题。有向图对信息流进行建模，从而对通过系统的故障传播进行建模。已经成功开发了一种计算方法来进行故障诊断过程并生成确定的故障组合列表。通过考虑两种运行模式对商用飞机燃油系统的应用，即波音777的使用，证明了该方法的范围。此外，本文重点介绍了减少方法的发展对提高可能性的贡献。从不同角度以三种方式确定可能的故障原因。这三种方法提供了确定发生故障的组件，最可能的故障模式原因以及特定组件故障的证据的选项。

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