外部干扰和随机DoS攻击下的网联车安全H∞队列控制

Secure H∞ Platooning Control for Connected Vehicles Subject to External Disturbance and Random DoS Attacks

针对网联车队列系统易受到干扰和拒绝服务(Denial of service, DoS)攻击问题,提出一种外部干扰和随机DoS攻击作用下的网联车安全H∞队列控制方法.首先,采用马尔科夫随机过程,将网联车随机DoS攻击特性建模为一个随机通信拓扑切换模型,据此设计网联车安全队列控制协议.然后,采用线性矩阵不等式(Linear matrix inequality, LMI)技术计算安全队列控制器参数,并应用Lyapunov-Krasovskii稳定性理论,建立在外部扰动和随机DoS攻击下队列系统稳定性充分条件.在此基础上,分析得到该队列闭环系统的弦稳定性充分条件.最后,通过7辆车组成的队列系统对比仿真实验,验证该方法的优越性.

In response to the vulnerability of connected vehicle platoon systems to disturbances and denial of ser-vice(DoS)attacks,a secure H∞platooning control approach is proposed for connected vehicles subject to external disturbances and random DoS attacks.Utilizing Markov random processes,the characteristics of random DoS at-tacks on connected vehicles are modeled as a stochastic communication topology switching model,based on which a protocol for secure platooning control is designed.Next,the parameters of the secure queue controller are computed using linear matrix inequality(LMI)techniques,and the Lyapunov-Krasovskii stability theory is applied to estab-lish sufficient conditions for stability of the platoon system under the external disturbances and random DoS at-tacks.On this basis,the sufficient conditions for the string stability of the closed-loop system of the platoon are ob-tained.Finally,the superiority of the results presented in this paper is verified through comparative simulation ex-periments on a platoon system composed of seven vehicles.