Fixed-Time Practical Group Consensus for Dynamic Event-Triggered Nonlinear Multi-Agent Systems

For multi-agent systems (MAS) with limited communication resources, external bounded disturbances and non-linearity, the practical group consensus problem with fixed time is studied. A dynamic event-triggered control strategy is proposed. By adding auxiliary parameters to dynamically change the threshold value, Solves the constraints that only relates to the state of the system and its neighbor agents in the strategy, and the trigger conditions of MAS are more operable. Based on the strategy, a practical group consensus control protocol with fixed time is designed, which can further reduce the communication cost. MAS affected by nonlinear terms and external bounded disturbances can achieve practical group consensus under any initial conditions by changing the grouping parameters in a fixed-time. Combined with Lyapunov stability theory and algebraic diagrams, it is demonstrated that MAS can achieve group consistency in fixed-time and strictly exclude Zeno behavior. Finally, the results is verified to be effective by simulation examples.