Model predictive control and Extended Command Governor for improving robustness of relative motion guidance and control
Model predictive control and Extended Command Governor for improving robustness of relative motion guidance and control
复制标题
模型预测控制和扩展命令调速器，用于提高相对运动引导和控制的鲁棒性
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
I. Kolmanovsky
中科院分区：
文献类型：
--
作者：
C. Petersen;A. Jaunzemis;Morgan Baldwin;M. Holzinger;I. Kolmanovsky
本文介绍了两种提高航天器相对运动制导与控制的星上鲁棒性的方法。第一种方法是基于模型预测控制（MPC），本文证明了其强大的轨迹执行能力，通过改变环境与突然出现的障碍物沿着其路径。第二，新颖的方法使用扩展命令总督（ECG），增加了标称LQ控制器。当有必要避免约束违反时，ECG修改内环LQ控制器的命令设定点。仿真是用来比较这两种方法和MPC的实验结果，基于一个omnibot系统开发的航天器相对运动控制算法的验证，报告。
The paper describes two approaches to improving on-board robustness of spacecraft relative motion guidance and control. The first approach is based on Model Predictive Control (MPC), and this paper demonstrates its capability for robust trajectory execution by changing the environment with a sudden obstacle appearing along its path. The second, novel approach uses an Extended Command Governor (ECG) that augments a nominal LQ controller. The ECG modifies commanded set-points to the inner loop LQ controller when it becomes necessary to avoid constraint violation. Simulations are used to compare the two approaches and experimental results of MPC, based on an omnibot system developed for validation of spacecraft relative motion control algorithms, are reported.