Secure Consensus for Switched Multiagent Systems Under DoS Attacks: Hybrid Event-Triggered and Impulsive Control...

Area of Science:

• Control Systems Engineering
• Networked Systems
• Cybersecurity

Background:

• Nonlinear multiagent systems (MASs) face challenges with switching topologies, denial-of-service (DoS) attacks, and unknown external disturbances.
• Existing control methods struggle to address the combined threats of aperiodic DoS attacks and instantaneous environmental disturbances.

Purpose of the Study:

• To address the leader-following secure consensus problem in nonlinear MASs under DoS attacks and external disturbances.
• To develop a robust control strategy that ensures system stability and consensus despite security threats and environmental uncertainties.

Main Methods:

• An impulsive-based switching network structure was proposed to manage unknown instantaneous disturbances.
• A novel hybrid event-triggered and impulsive control protocol was designed to counter DoS attacks.
• Lyapunov theory was employed to rigorously prove the stability of the closed-loop system and exclude Zeno behavior.

Main Results:

• The developed hybrid control protocol effectively guarantees secure consensus in nonlinear MASs.
• The proposed method demonstrates resilience against aperiodic DoS attacks and external instantaneous disturbances.
• The control strategy conserves resources by utilizing discontinuous sampled states, outperforming continuous control methods.

Conclusions:

• The presented methodology offers a viable solution for achieving secure consensus in complex nonlinear multiagent systems.
• The hybrid event-triggered and impulsive control approach enhances system robustness and resource efficiency.
• The study validates the effectiveness of the proposed technique through a practical example.