面向系统健康度的网络节点重要度评估  

Health-based network node importance assessment

作　　者：刘剑慰[1] 姜斌[1] 杨蒲[1] LIU Jianwei;JIANG Bin;YANG Pu(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学自动化学院,江苏南京211106

出　　处：《物联网学报》2021年第3期21-26,共6页Chinese Journal on Internet of Things

基　　金：江苏省物联网与控制技术重点实验室基金资助项目(No.NS2017017);国防科技重点实验室基金资助项目(No.6142605200402);国家重点研发计划(No.2020AAA0109305);民航飞机健康监测与智能维护重点实验室开放基金资助项目(No.NJ2018012)。

摘　　要：针对网络系统中关键节点确认问题,提出了一种基于健康度的节点重要度评估方法。首先,分析系统健康度定义,然后根据网络节点间的连接关系,建立邻接矩阵,计算节点在正常情况和故障降级情况下的网络容量变化,建立系统健康度和节点重要度的关系模型。最后,将该方法应用于一个运输网络系统。仿真案例表明,该方法能够有效确定系统中的关键节点,有助于提高系统可靠性。For the identification of key nodes in network systems,a node importance assessment method based on the system health state was proposed.Firstly,the definition of the system health degree was analyzed.Then,according to the connection relationship between network nodes,the adjacency matrix was established to calculate the network capacity change under normal conditions and fault degradation conditons.And the relationship model between the system health degree and the node importance degree was established.Finally,simulations of network systems showed that this method could effectively identify the key nodes in the system and improve the reliability of the network.

关 键 词：健康评估 节点重要度 网络拓扑 邻接矩阵 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]