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首页> 外文期刊>Acta astronautica >Relative position coordinated control for spacecraft formation flying with communication delays
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Relative position coordinated control for spacecraft formation flying with communication delays

机译：具有通信延迟的航天器编队飞行的相对位置协调控制

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摘要

This study addresses a relative position coordinated control problem for spacecraft formation flying subject to directed communication topology. Two different kinds of communication delay cases, including time-varying delays and arbitrarily bounded delays are investigated. Using the backstepping control technique, two virtual velocity control inputs are firstly designed to achieve coordinated position tracking for the kinematic subsystem. Furthermore, a hyperbolic tangent function is introduced to guarantee the boundedness of the virtual controller. Then, a finite-time control algorithm is designed for the dynamic subsystem. It can guarantee that the virtual velocity can be followed by the real velocity after finite time. It is theoretically proved that the proposed control scheme can asymptotically stabilize the closed-loop system. Numerical simulations are further presented that not only highlight closed-loop performance benefiting from the proposed control scheme, but also illustrate its superiority in comparison with conventional formation control schemes.
机译：这项研究解决了定向通信拓扑下航天器编队飞行的相对位置协调控制问题。研究了两种不同的通信时延情况，包括时变时延和任意界时延。使用反步控制技术，首先设计了两个虚拟速度控制输入，以实现运动子系统的协调位置跟踪。此外，引入了双曲正切函数以保证虚拟控制器的有界性。然后，为动态子系统设计了一个有限时间控制算法。可以保证在有限的时间后，虚拟速度可以跟随实际速度。理论上证明了所提出的控制方案能够渐近稳定闭环系统。还提供了数值模拟，不仅突出了受益于所提出的控制方案的闭环性能，而且还展示了其与常规地层控制方案相比的优越性。

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