多航天器系统分布式姿态协同预设性能控制

Distributed Attitude Cooperative Prescribed Performance Control for Multi-Spacecraft Systems

得益于在执行空间飞行任务中具有较高的灵活性和可靠性,多航天器编队系统受到广泛关注。针对航天器编队系统姿态协同控制问题,提出了一种固定时间收敛的分布式姿态协同预设性能控制方法。首先,基于修正罗德里格斯参数构建航天器的相对姿态动力学模型,并采用固定时间收敛的预设性能函数包络定量描述姿态误差方程的瞬稳态性能;其次,在预设性能控制框架下设计了多航天器姿态协同控制器,并给出控制器的稳定性证明;最后,通过多航天器姿态协同稳定算例与姿态跟踪控制算例仿真验证了所提方法的可行性与有效性。

Multi-spacecraft formation systems have received widespread attention due to their high flexibility and reliability in executing space flight missions.This paper addresses the attitude coordination control problem of spacecraft formation systems and proposes a distributed attitude coordination prescribed performance control method with fixed-time convergence.Firstly,the relative attitude dynamics model of spacecraft is constructed based on modified Rodrigues parameters,and the fixed-time convergence preset performance function envelope is adopted to quantitatively describe the transient performance of the attitude error equation.Secondly,within the framework of preset performance control,a multi-spacecraft attitude coordination controller is designed,and the stability of the controller is demonstrated.Finally,the feasibility and effectiveness of the proposed method are verified through the simulation of two sets of multi-spacecraft attitude coordination stability and tracking control examples.