面向民用飞机排故的增强型符号有向图  

ESDG approach for troubleshooting of civil aircraft

作　　者：周虹[1] 陈志雄[2] ZHOU Hong CHEN Zhixiong(College of Aeronautic Transportation, Shanghai University of Engineering Science, Shanghai 201620, China College of Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China)

机构地区：[1]上海工程技术大学航空运输学院,上海201620 [2]上海工程技术大学汽车工程学院,上海201620

出　　处：《航空学报》2016年第12期3821-3831,共11页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51465047);航空科学基金(2014ZD56009)~~

摘　　要：针对民用飞机故障的动态特性及维修体制,在符号有向图(SDG)模型中引入动态元素,并融合系统结构模型,提出一种结构和参数能随工况变化而调整的增强型有向图(ESDG)模型。进而提出基于故障依赖矩阵的相容根树搜索算法与分层诊断策略,能解决实际排故中常常因部分状态未测量而造成诊断信息缺失的问题。该方法能满足分级维修中不同诊断精度的要求。多个工况的综合诊断进一步提高了推理分辨率。最后以某民机发动机引气系统为实例说明了该方法的有效性。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.

关 键 词：民用飞机排故 符号有向图 故障依赖矩阵 未测节点 相容根树 

分 类 号：V245.3[航空宇航科学与技术—飞行器设计] TP277[自动化与计算机技术—检测技术与自动化装置]