Robust control for spacecraft rendezvous system with actuator unsymmetrical saturation: a gain scheduling approach
Robust control for spacecraft rendezvous system with actuator unsymmetrical saturation: a gain scheduling approach
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DOI：
10.1080/00207179.2017.1313451
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发表时间：
2018-06
影响因子：
2.1
通讯作者：
Qian Wang;A. Xue
中科院分区：
文献类型：
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作者：
Qian Wang;A. Xue
摘要针对航天器交会对接系统，考虑了参数不确定性和执行器非对称饱和的影响，提出了一种基于离散增益调度的鲁棒控制方法。通过改变变量，将执行器非对称饱和控制问题转化为对称饱和控制问题。该方法的主要优点是提高闭环系统的动态性能，并具有尽可能大的吸引区。利用李雅普诺夫方法和调度技术，以线性矩阵不等式的形式给出了容许控制器的存在条件。数值仿真验证了该方法的有效性。
ABSTRACT This paper has proposed a robust control for the spacecraft rendezvous system by considering the parameter uncertainties and actuator unsymmetrical saturation based on the discrete gain scheduling approach. By changing of variables, we transform the actuator unsymmetrical saturation control problem into a symmetrical one. The main advantage of the proposed method is improving the dynamic performance of the closed-loop system with a region of attraction as large as possible. By the Lyapunov approach and the scheduling technology, the existence conditions for the admissible controller are formulated in the form of linear matrix inequalities. The numerical simulation illustrates the effectiveness of the proposed method.