Event-trigger-based cluster coordinated control of spacecraft swarm under switching topology

Abstract

This paper investigates the cluster coordination problem of spacecraft swarms with non-negative defined directed communication topology in the context of multi-mission parallel operations. In this design, an intrinsic plasticity based echo state network is established to approximate the nonlinear term of relative attitude dynamics, and an improved event-triggered transmission mechanism is proposed to decrease the redundant communication among spacecraft. A novel cluster coordination control law under fixed non-negative topology is developed based on the echo state neural network and the event-triggered transmission mechanism. Furthermore, an extended cluster coordinated control law is proposed for the switching topology case. By using Lyapunov stability theory and graph theory, it is demonstrated that intra-cluster attitude coordination can be achieved under the proposed control laws and Zeno behavior can be excluded. Finally, numerical examples are given to illustrate the validity and superiority of our results.