基于改进FPPN的飞控系统故障传播路径分析方法  

A fault propagation path analysis method for flight control system based on improved FPPN

作　　者：张晓瑜 张凤琪 郭润夏 吴军[2] ZHANG Xiaoyu;ZHANG Fengqi;GUO Runxia;WU Jun(School of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China;School of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300 [2]中国民航大学航空工程学院,天津300300

出　　处：《北京航空航天大学学报》2024年第6期1829-1841,共13页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(62173331,52005500);天津市教委科研计划(2018KJ238,2020KJ013)。

摘　　要：针对飞控系统多冗余、多闭环的结构特性,结合有向图模型和模糊Petri网(FPN)模型,构建飞控系统故障传播模糊概率Petri网(FPPN)模型,以解决飞控系统特定结构下的故障传播路径问题。改进的FPPN模型包含飞控系统有向图模型、故障传播特性量化计算模型和故障传播FPPN模型3个部分。采用面向对象技术分析飞控系统的功能行为和物理结构,综合复杂网络理论,构建系统故障传播有向图模型;引入Floyd算法,开展系统耦合关联分析,基于节点的度和边介数定义系统故障传播特性;在有向图模型的基础上,提出相应的结构映射规则,构建飞控系统故障传播FPPN模型,融合改进后的参数量化方法,设定2种推理算法对系统多冗余、闭环结构特性下的故障传播路径进行有效分析。通过数值分析与实例验证,获取飞控系统典型故障传播路径及路径上相关节点的状态值,验证所提方法的有效性。In view of the multi-redundancy and multi-closed-loop structural characteristics of the flight control system,the directed graph model and the fuzzy Petri net(FPN)model were used,and a fuzzy probability Petri net(FPPN)model for fault propagation of the flight control system was constructed,so as to solve the fault propagation path of the flight control system with a specific structure.The improved FPPN model consisted of three parts:directed graph model of flight control system,quantitative calculation model for fault propagation characteristics,and FPPN model for fault propagation.A directed graph model of system fault propagation was built by analyzing the functional behavior and physical structure of the flight control system through object-oriented technology and utilizing complex network theory.The Floyd algorithm was introduced to carry out the system coupling correlation analysis,and the system fault propagation characteristics were defined based on the two indicators of node degree and edge betweenness.On the basis of the directed graph model,the corresponding structure mapping rules were proposed.The FPPN model for fault propagation of the flight control system was constructed.With the improved parameter quantization method,two reasoning algorithms were set to effectively analyze the fault propagation paths of the system with multi-redundancy and closed-loop structure characteristics.Through numerical analysis and example verification,the typical fault propagation path of the flight control system and the status value of the relevant nodes on the path were obtained,so as to verify the effectiveness of the proposed method.

关 键 词：飞控系统 复杂网络理论 有向图模型 模糊概率Petri网模型 故障传播路径分析 

分 类 号：V249[航空宇航科学与技术—飞行器设计]