基于节点免疫策略的装备保障网络级联失效模型

Cascading failure model of equipment support networks based on intelligent node

针对实际装备保障网络中各保障实体均具备智能性的特点,在传统复杂网络的"负荷—容量"级联失效模型基础上,结合agent建模仿真方法,建立了装备保障网络遭受攻击后的"故障—传播—修复—免疫"级联失效模型。将载荷重分配范围内的节点划分为完好节点、传播节点、恢复节点和免疫节点四类。其中免疫节点是指节点修复后一定概率获得攻击免疫功能,模拟真实保障实体在得到协同保障进行修复后,在自身学习能力下一定概率躲避再次攻击的能力。最后通过解析计算与模型仿真,分析了改进模型在随机保障、定点保障和伴随保障三种保障模式对应的随机免疫、目标免疫和主动免疫策略下保障网络中节点的演化关系,证明了模型的合理性和有效性。

Considering the support entity in actual equipment support network all own some intelligence,this paper established a“failure-disseminate-recovered-immune”cascading failure model based on the improved“load-capacity”model,combining with the complex network and agent based modeling and simulation method.The nodes in the equipment support network could be divided into four categories,the intact node,the disseminate node,the recovered node and the immune node.The immune node could get certain probability to avoid the next attack when it was recovered,which could simulate the study capability for the support entity.Finally this paper analyzed the three tactics of stochastic immunization,target immunization and active immunization under the corresponding three support tactics of random support,site support and accompanying support.It gives the evolutionary relationships of nodes in the support network and certificates the rationality and validity of the model.