This paper studies the attitude tracking control problem of the rigid spacecraft with parametric uncertainties and unknown bounded disturbances. Firstly, an ideal generalized predictive controller (GPC) containing unknown items is constructed, which can optimize the receding horizon performance index and ensure the optimal performance of the closed-loop system. Afterward, in an attempt to estimate and compensate the lump model uncertainties, an extended state observer is proposed by using the hyperbolic tangent function. Meanwhile, the explicit tuning rules for observer parameters are derived on account of the stability analysis. And then, it is fully proved in Lyapunov framework that all closed-loop signals invariably keep bounded and the attitude tracking error ultimately converges to a little neighborhood of zero. Lastly, the simulation results show the high efficiency and precision of the proposed control method.

中文翻译：

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基于双曲正切扩张态观测器的航天器姿态广义预测跟踪控制


研究了参数不确定、有界扰动未知的刚性航天器姿态跟踪控制问题。首先，构建了包含未知项的理想广义预测控制器（GPC），可以优化后退性能指标，保证闭环系统的最优性能。随后，为了估计和补偿集总模型的不确定性，利用双曲正切函数提出了扩展状态观测器。同时，通过稳定性分析，推导了观测器参数的显式调整规则。然后，在Lyapunov框架中充分证明了所有闭环信号始终保持有界，姿态跟踪误差最终收敛于零邻域。最后，仿真结果表明了所提出的控制方法的高效性和精度。