Resilient Global Practical Fixed-Time Cooperative Output Regulation of Uncertain Nonlinear Multiagent Systems Subject to Denial-of-Service Attacks

This paper investigates the problem of resilient global practical fixed-time cooperative output regulation of uncertain nonlinear multi-agent systems subject to denial-of-service attacks. A novel distributed resilient adaptive fixed-time control strategy is proposed, which consists of a novel distributed resilient fixed-time observer with a chain of nonlinear filters and a novel distributed resilient adaptive fixed-time controller. It is shown that the problem of resilient global practical fixed-time cooperative output regulation can be solved by the proposed control strategy. More specifically, the proposed distributed control strategy ensures the global boundedness of all the signals in the resulting closed-loop system and the global convergence of the regulated outputs to a tunable residual set in a fixed time. A simulation example is finally provided to illustrate the efficacy of the proposed control strategy.