高速采样下含网络攻击的信息物理系统H_/H_(∞)故障检测  

H_/H_(∞) fault detection of cyber-physical systems with cyber attacks under high speed sampling

作　　者：杜峥 刘孟凯 周建勋 张端金[1] DU Zheng;LIU Meng-kai;ZHOU Jian-xun;ZHANG Duan-jin(School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学信息工程学院,郑州450001

出　　处：《控制与决策》2022年第5期1395-1401,共7页Control and Decision

基　　金：国家自然科学基金项目(61471323)。

摘　　要：研究高速采样情况下,含有网络攻击的信息物理系统多目标故障检测问题.考虑系统同时存在时变时延、执行器网络攻击和传感器网络攻击,基于Delta算子对上述系统进行离散化处理,建立在高速采样的条件下,故障与攻击并存的离散时间模型.构造H_/H_(∞)故障检测滤波器,使系统具有对随机扰动的鲁棒性,且具有对检测信号的高灵敏性.采用Lyapunov-Krasovskii泛函和线性矩阵不等式的方法,提出系统具有渐近稳定性以及H_/H_(∞)性能的充分条件.仿真结果验证了所提方法的可行性和有效性.This paper studies the problem of multi-target fault detection for cyber-physical systems(CPSs)with cyber attacks under the condition of high speed sampling.The CPSs with time-varying delay,actuator cyber attack and sensor cyber attack is considered,and the system is discretized based on the Delta operator.Then a discrete-time model with fault and attack is established under high speed sampling.The H_/H_(∞)fault detection filter is constructed,which makes the system robust to random disturbances and highly sensitive to the detected signals.The sufficient conditions which can guarantee the asymptotic stability and H_/H_(∞)performance of the system are proposed by using the Lyapunov-Krasovskii functional and linear matrix inequalities(LMIs)approach.Simulation results show the feasibility and effectiveness of the proposed method.

关 键 词：信息物理系统 攻击 故障检测 高速采样 鲁棒性 灵敏性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]