Secure Event-Based Consensus Control for Multi-Agent Systems Under DoS Attacks and Input Saturation

The secure consensus problem is addressed for multiagent systems (MASs) suffering from saturated control input and denial-of-service (DoS) attacks. The communication networks’ open setting and sharing nature give rise to security issues and impact the performance of MASs. Malicious DoS attacks attempt to disrupt the information exchange and undermine consensus by compromising the availability of transmitted data. Moreover, the control input can be saturated as a result of physical device limitations or safety concerns. To tackle these challenges, a state-prediction-based dynamic event-triggered mechanism (DETM) control protocol is designed to guarantee the secure consensus of MASs while reducing redundant communication, avoiding continuous monitoring of adjacent states, and ensuring effective utilization of limited bandwidth resources. Zeno behavior is eliminated by confirming the existence of a positive lower bound on interevent intervals. Sufficient conditions are established for the co-design of the DETM and controller to accomplish the desired goal. Finally, a simulation is conducted to substantiate the effectiveness and validity of the proposed control protocol.