欺骗攻击下网络化系统事件触发安全控制

针对网络控制系统受欺骗攻击问题，提出了事件触发器与安全控制器协同设计策略。提出了离散事件触发机制，克服了连续事件触发机制需要新增专用硬件且需要复杂计算避免芝诺现象局限。建立了有机融合欺骗攻击、事件触发机制、网络诱导延时及外部扰动多约束参数的闭环系统时滞模型，推导出了欺骗攻击下事件触发控制系统渐近稳定的充分条件，得到了事件触发器与安全控制器的协同设计条件。仿真验证了方法的有效性。

Event-Triggered Secure Control for Networked Systems Under Deception Attacks

As for networked control systems under deception attacks, a co-design strategy of event-triggered mechanism and secure controller is proposed. Firstly, a discrete-time event-triggered mechanism is introduced, which overcomes limits of continuous-time event-triggered mechanism requiring dedicated hardware and complex Zeno-avoidance computation. Secondly, a time-delay closed-loop system model is built, which integrates parameters of deception attacks, event-triggered mechanism, network-induced delays and external disturbances in a unified framework. Then, sufficient conditions for asymptotic stability of the attacked event-triggered systems are derived, and the co-design scheme of event-triggered mechanism and secure controller is presented. Finally, simulation confirms the proposed methods.