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Robust H-infinity output feedback control for attitude stabilization of a flexible spacecraft

机译:强大的H无限输出反馈控制,可稳定挠性航天器的姿态

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摘要

Current spacecraft is always equipped with large flexible appendages and payloads, and the high-precision attitude control is therefore a challenging problem. This paper addresses the robust output feedback control to achieve attitude stabilization of a flexible spacecraft. The Lagrange-like model of attitude dynamics is firstly proposed. Then a LMI-based output feedback controller is designed in the presence of disturbances. The stability of closed-loop system is discussed by the Lyapunov method. To deal with the model uncertainties, the convex optimization algorithm is presented. Numerical simulations are finally provided to illustrate the performance of the proposed controllers.
机译:当前的航天器总是配备有较大的柔性附件和有效载荷,因此高精度姿态控制是一个具有挑战性的问题。本文讨论了鲁棒的输出反馈控制,以实现挠性航天器的姿态稳定。首先提出了姿态动力学的拉格朗日式模型。然后在存在干扰的情况下设计基于LMI的输出反馈控制器。用Lyapunov方法讨论了闭环系统的稳定性。针对模型的不确定性,提出了凸优化算法。最后提供了数值模拟,以说明所提出控制器的性能。

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