A Novel DoS-Attack-Aware Event-Triggered Synchronization Control for Discrete-Time Fuzzy Complex Networks Under...

Area of Science:

• Control Systems Engineering
• Network Science
• Cybersecurity

Background:

• Discrete-time fuzzy complex networks (FCNs) face synchronization challenges due to coupling effects and cyber attacks.
• Limited communication resources necessitate efficient data transmission protocols.
• Denial-of-Service (DoS) attacks pose a significant threat to network stability and control.

Purpose of the Study:

• To investigate the event-triggered (ET) synchronization control problem for discrete-time FCNs under cyber attacks.
• To develop a robust control scheme that mitigates the impact of DoS attacks and communication constraints.
• To improve control performance while minimizing controller update frequency.

Main Methods:

• Introduction of a round-robin (RR) protocol to manage communication order among coupled nodes.
• Proposal of the average dwelling time ratio (ADTR) for evaluating DoS attack models.
• Development of a DoS-attack-aware ET mechanism with a dynamically adjusted threshold.
• Co-design of anti-attack security control and ET mechanism.
• Establishment of Lyapunov functions to derive synchronization criteria.

Main Results:

• Sufficient criteria for the synchronization of discrete-time FCNs were obtained.
• A controllable range for the ADTR was calculated.
• The proposed scheme demonstrated improved control performance compared to existing methods.
• Controller update frequency was significantly reduced.

Conclusions:

• The developed DoS-attack-aware ET control scheme based on the RR protocol is effective for FCN synchronization.
• The integrated approach successfully addresses coupling effects, cyber attacks, and communication limitations.
• The findings offer a more general and flexible solution against DoS attacks.