Methodology for Satellite Formation-Keeping in the Presence of System Uncertainties
Methodology for Satellite Formation-Keeping in the Presence of System Uncertainties
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DOI：
10.2514/1.g000317
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发表时间：
2014-09
影响因子：
2.6
通讯作者：
F. Udwadia;T. Wanichanon;Hancheol Cho
中科院分区：
文献类型：
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作者：
F. Udwadia;T. Wanichanon;Hancheol Cho
提出了一种两步编队保持控制方法，包括姿态和轨道控制的不确定性存在的要求。基于标称系统模型，提供了最好的评估现实生活中的不确定环境，非线性控制器，满足所需的姿态和轨道的要求。该控制器允许非线性标称系统精确地跟踪期望的姿态和轨道要求，而无需进行任何线性化/近似。在第二步中，一个新的附加的封闭形式的附加连续控制器的开发。这些连续控制器补偿卫星物理模型和卫星可能受到的力的不确定性。他们解决了喋喋不休的问题。标称系统的期望轨迹被用作跟踪信号，并且这些控制器是基于滑动表面的概念的概括。跟踪的误差范围由于...
A two-step formation-keeping control methodology is proposed that includes both attitude and orbital control requirements in the presence of uncertainties. Based on a nominal system model that provides the best assessment of the real-life uncertain environment, a nonlinear controller that satisfies the required attitude and orbital requirements is first developed. This controller allows the nonlinear nominal system to exactly track the desired attitude and orbital requirements without making any linearizations/approximations. In the second step, a new additional set of closed-form additive continuous controllers is developed. These continuous controllers compensate for uncertainties in the physical model of the satellite and in the forces to which it may be subjected. They obviate the problem of chattering. The desired trajectory of the nominal system is used as the tracking signal, and these controllers are based on a generalization of the concept of sliding surfaces. Error bounds on tracking due to the ...