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针对大规模航天器集群飞行构形控制问题,提出了一种基于滑模变结构控制与改进人工势场法相结合的控制方法。集群航天器相对运动采用非线性动力学方程描述,人工势场法可以避免集群航天器之间的碰撞,滑模变结构控制对摄动干扰和模型不确定性具有鲁棒性,可以实现构形的精确控制。利用Lyapunov稳定性理论,证明了控制系统的全局渐进稳定性。通过仿真算例,验证了控制方法的可行性。
Aiming at the control of large-scale spacecraft flight configuration control, a control method based on sliding mode variable structure control and improved artificial potential field method is proposed. The relative motion of the cluster spacecraft is described by the nonlinear dynamic equations. The artificial potential field method can avoid the collision between the cluster spacecraft. The sliding mode variable structure control is robust to perturbation disturbance and model uncertainty, Precise control. Using Lyapunov stability theory, the global asymptotic stability of the control system is proved. Through the simulation example, the feasibility of the control method is verified.