Sampled-Data Control for Relative Position Holding of Spacecraft Rendezvous With Thrust Nonlinearity
Sampled-Data Control for Relative Position Holding of Spacecraft Rendezvous With Thrust Nonlinearity
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DOI：
10.1109/tie.2011.2161659
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发表时间：
2012-02
影响因子：
7.7
通讯作者：
Xuebo Yang;Xibin Cao;Huijun Gao
中科院分区：
文献类型：
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作者：
Xuebo Yang;Xibin Cao;Huijun Gao
研究了具有有限推力和推力非线性的航天器相对位置保持采样控制问题。基于Clohessy-Wiltshire方程建立了相对动力学模型。扇区非线性被用来描述追逐者推力器的非线性行为。将相对位置保持问题转化为采样输出跟踪控制问题，并考虑了闭环系统的干扰抑制问题。利用李雅普诺夫方法，将控制器的设计转化为凸优化问题.仿真结果表明了所提出的控制器设计方法的有效性和优越性。
This paper investigates the sampled-data control problem for spacecraft relative positional holding with limited thrust and thrust nonlinearity. The relative dynamic model is established based on the Clohessy-Wiltshire equations. Sector nonlinearity is employed to describe the nonlinear behavior of the chaser's thruster. The relative position holding problem is regarded as a sampled-data output tracking control problem, and the disturbance attenuation for the closed-loop system is considered. By a Lyapunov approach, the controller design is cast into a convex optimization problem. Simulation results show the effectiveness and advantage of the proposed controller design method.