Predefined-time consensus tracking of high-order multiagent system with deception attack

This paper solves predefined-time consensus tracking issue for high-order multiagent system (MAS) under deception attack. A distributed observer is designed to observe the leader's states within prescribed time under deception attack. Then, a predefined-time leader-follower consensus control protocol is proposed to offset the unmatched disturbances arisen from deception attack and realize practical predefined-time leader-following consensus. It is proved that the presented distributed observer gives the leader's states estimation within prescribed time and the constructed predefined-time controller achieves practical predefined-time leader-following consensus. Finally, simulation example certifies the validity of the developed control strategy.