This paper is dedicated to the switched systems suffering asynchronous denial-of-service (DoS) attacks that compromise sensor–controller and controller–actuator channels independently. By taking into account the energy constraints, the duration of DoS attacks has different maximum bounds for different channels. To eliminate the negative effect of DoS attacks, an active control strategy consisting of a predictor mechanism and a buffer mechanism is devised. In such a strategy, the controller sends a sequence of control signals to the actuator to guarantee the system energy does not increase too fast, even if the sensor–controller and the controller–actuator channels are attacked simultaneously. Furthermore, the mismatch of the controller and the subsystem is addressed due to the presence of event-triggered scheme and DoS attacks. It is shown that the systems’ states allow a bounded divergency over mismatched interval. To this end, the switching signal is designed in connection with the properties of DoS attacks, event-triggered scheme and system parameters. Finally, an example is carried out to verify the effectiveness of the theoretical results.

本文专门针对遭受异步拒绝服务 (DoS) 攻击的交换系统，这些攻击会独立破坏传感器-控制器和控制器-执行器通道。考虑到能量限制，DoS 攻击的持续时间对于不同的通道有不同的最大界限。为了消除DoS攻击的负面影响，设计了一种由预测机制和缓冲机制组成的主动控制策略。在这种策略中，控制器向执行器发送一系列控制信号，以保证系统能量不会增加太快，即使传感器-控制器和控制器-执行器通道同时受到攻击。此外，由于存在事件触发方案和 DoS 攻击，解决了控制器和子系统的不匹配问题。结果表明，系统的状态允许在不匹配的区间内存在有限的分歧。为此，结合DoS攻击的特性、事件触发方案和系统参数设计了切换信号。最后通过算例验证了理论结果的有效性。