论文标题
$ L_2 $ L_2 $ HARO轨道的电台保存在采样数据模型预测控制下
Station-keeping of $L_2$ halo orbits under sampled-data model predictive control
论文作者
论文摘要
该论文介绍了改进的模型预测控制方案的设计，以在地球系统中的$ L_2 $点附近实现排量轨道上的站点。通过多速率采样数据轨迹计划器，可以简化模型预测控制器的优化问题，同时确保可行性和收敛到所需的轨道，从而获得了改进。多速率计划者的设计基于初步非线性调节反馈下的动态模型的简化模型。所提出的控制方案显示出在不同情况下跟踪误差和能量支出方面，均优于最新站点的非线性模型预测控制设计。最后，对与计算时间有关的方面进行了简要研究，从而强调了对现代硬件实时实施的可能性。
The paper deals with the design of an improved model predictive control scheme for achieving station-keeping in a quasi Halo orbit around the $L_2$ point in the Earth-Moon system. The improvement is obtained thanks to a multi-rate sampled-data trajectory planner that allows for simplifying the optimization problem of the model predictive controller while guaranteeing feasibility and convergence to the desired orbit. The multi-rate planner is designed based on a simplified model of the dynamics under a preliminary nonlinear regulation feedback. The proposed control scheme is shown to outperform recent station-keeping nonlinear model predictive control designs both in terms of tracking error and energy expenditures in different situations. Finally, a brief study of aspects pertaining to computational time are carried out so highlighting the possibility for real time implementation on modern hardware.
