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Finite-time distributed hierarchical control for satellite cluster with collision avoidance

机译:卫星群体的有限时间分布式分层控制,避免碰撞

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In this paper, a novel distributed hierarchical control method for small satellites with multiple disturbances and input constraints is investigated by combining formation flying and satellite cluster. First, a finite-time convergent extended state observer (FTCESO) is developed to estimate the external disturbance with high precision, and a non-singular fast terminal sliding mode controller (NFTSMC) is proposed to maintain the specific configuration of leader-satellites and the finite time convergence is theoretically proved. Then, an improved artificial potential field method with collision avoidance and damping characteristics is proposed for the follower-satellite, so that the follower-satellite can keep a collision-avoidance relative distance from corresponding leader-satellite with the desired communication range. Finally, numerical simulations are performed to demonstrate the effectiveness of the proposed method. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译:本文通过组合飞行飞行和卫星簇来研究一种具有多种干扰和输入约束的小型卫星的新型分布式分配控制方法。 首先,开发了有限时间收敛的扩展状态观察者(FTCESO)以估计高精度的外部干扰,并且提出了非奇异的快速终端滑模控制器(NFTSMC)以维持领导者卫星的特定配置和 理论上证明了有限时间融合。 然后,提出了一种改进的具有碰撞避免和阻尼特性的人工潜在场方法,使得从动卫星,从而使从动卫星可以保持与所需通信范围的相应通讯卫星的碰撞相对距离。 最后,进行数值模拟以证明所提出的方法的有效性。 (c)2021 Elsevier Masson SAS。 版权所有。

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