Distributed Event-triggered Group Attitude Coordinated Control of Multi-spacecraft with Undirected Topology

Group attitude coordinated control of multi-spacecraft is investigated with the distributed event-triggered mechanism. The communication topology of the system is an undirected graph. An auxiliary variable is designed, and event-triggered functions for every spacecraft are constructed. The control input is proposed with the information of the neighbor at the triggering instant. It is proved that the multi-spacecraft system can reach group attitude coordination, and for every spacecraft, the triggering interval has a positive lower bound, thus Zeno behavior is avoided. The effectiveness of the control input proposed is verified with simulation results.