Resilient leader-following consensus control approach for generic linear multi-agent systems under input saturation and DoS cyberattacks

The paper investigates the resilient leader-following consensus of linear multi-agent systems (MASs) in the presence of input saturation and denial-of-service (DoS) cyberattacks. The present work ensures the leader-following consensus of MASs despite input saturation and DoS attacks, unlike conventional consensus control schemes that cannot address input saturation. In earlier works, large control inputs were applied to recover MASs from DoS attacks, which can lead to saturation of actuators. The saturation of actuators can assist attackers in carrying out their malicious activities. To address this problem, the saturation properties are incorporated in the design to consider a region of stability (RoS) under DoS attacks. The proposed approach uses buffers for improving the security of MASs, and it also estimates the allowable DoS frequency and DoS duration for a sustainable operation. Furthermore, the proposed work establish a region of initial conditions that guarantees the secure consensus under input saturation. The present scheme also reduce the computational complexity by converting the results into a solvable form using the properties of the Kronecker product. Finally, a numerical example is provided to verify the resultant scheme.