面向民用飞机排故的增强型符号有向图
收稿日期: 2016-01-08
修回日期: 2016-05-09
网络出版日期: 2016-06-12
基金资助
国家自然科学基金（51465047）；航空科学基金（2014ZD56009）
ESDG approach for troubleshooting of civil aircraft
Received date: 2016-01-08
Revised date: 2016-05-09
Online published: 2016-06-12
Supported by
National Natural Science Foundation of China (51465047); Aeronautical Science Foundation of China (2014ZD56009)
周虹 , 陈志雄 . 面向民用飞机排故的增强型符号有向图[J]. 航空学报, 2016 , 37(12) : 3821 -3831 . DOI: 10.7527/S1000-6893.2016.0146
Aimed at the dynamic characteristics and maintenance mechanism for the faults of civil aircraft,an enhanced signed directed graph (ESDG) model whose structure and parameters can be adjusted according to the working conditions is proposed by introducing the dynamic elements to the signed directed graph (SDG) model and incorporating the system structure model. Then, compatible rooted tree search algorithm and hierarchical diagnosis strategy based on the fault dependency matrix are proposed, which solves the problem that the diagnosis information is missing since part of the status is not measured in actual troubleshooting. This approach is able to meet the requirements for different diagnosis accuracy in hierarchical maintenance. The comprehensive diagnosis for several working conditions further improves the reasoning resolution. Finally, the validity of this approach is illustrated by taking the example of the engine bleed system of certain civil aircraft.
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