基于熵权法和FMEA的舰船信息流网络关键节点识别  

Identification of key nodes in ship information flow network based on entropy weight method and FMEA

作　　者：刘幸运 王全虎 王军[1] 沈乃君 LIU Xingyun;WANG Quanhu;WANG Jun;SHEN Naijun(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China;Shanghai Zhongchuan Nerc-Sdtco.,Ltd,Shanghai 200000,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]上海中船船舶设计技术国家工程研究中心有限公司,上海200000

出　　处：《指挥控制与仿真》2023年第4期87-91,共5页Command Control & Simulation

摘　　要：舰船系统作为一种典型的信息物理系统(CPS),随着其信息化程度的不断提高,CPS信息安全事件频发。现有针对复杂网络的关键节点识别方法多是针对电力系统网络,基于这些网络的评价指标难以应用于电力系统之外的CPS网络。针对现有的关键节点识别方法在CPS中的不足,提出一种基于熵权法和FMEA的信息网络关键节点识别方法。将有效影响范围这个概念加入失效模式与影响分析(FMEA)的指标定性中,利用熵权法对FMEA中的指标进行客观赋权。结合主观性较强的FMEA中的风险顺序数,以风险顺序数中的三个评估指标作为熵权法中决策矩阵的指标。最后,通过舰船保障任务信息流节点网络案例验证该方法的正确性和可行性,分析结果表明,基于熵权法对三种指标综合赋权后的排序比单一的指标要更加合理。As a typical cyber-physical system(CPS),ship system,with the continuous improvement of its informatization degree,CPS information security incidents occur frequently.Most of the existing key node identification methods for complex networks are aimed at power system networks,and the evaluation indicators based on these networks are difficult to apply to CPS networks outside the power system.Aiming at the shortcomings of the existing key node identification methods in CPS,this paper proposes an information network key node identification method based on entropy weight method and FMEA.The concept of effective influence range is added to the indicator characterization of failure mode and effects analysis(FMEA),and the entropy weight method is used to objectively weight the indicators in FMEA.Combined with the risk sequence number in the FMEA with strong subjectivity,the three evaluation indicators in the risk sequence number are used as the indicators of the decision matrix in the entropy weight method.Finally,the correctness and feasibility of the method are verified by the case of ship support mission information flow node network.The analysis results show that the comprehensive weighted ranking of the three indicators based on the entropy weight method is more reasonable than a single indicator.

关 键 词：熵权法 失效模式与影响分析(FMEA) 关键节点 信息物理系统 

分 类 号：U674.7[交通运输工程—船舶及航道工程]