| 速度信息缺失的平动点轨道交会预设性能控制 |
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| 引用本文： | 郑丹丹,罗建军,殷泽阳,袁建平.速度信息缺失的平动点轨道交会预设性能控制[J].宇航学报,2019,40(5):508-517. |
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| 作者姓名： | 郑丹丹 罗建军 殷泽阳 袁建平 |
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| 作者单位： | 1. 西北工业大学航天学院，西安 710072；2. 航天飞行动力技术重点实验室，西安 710072 |
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| 基金项目： | 国家自然科学基金（61690211，11472213）;航天飞行动力学重点实验室开放基金（2015afdl014,2015afdl017） |
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| 摘 要： | 以平动点轨道的交会对接为研究背景，基于高阶积分链微分器和预设性能控制理论提出了一种仅需相对位置信息的平动点轨道近程交会控制律。首先利用高阶积分链微分器估计两航天器的相对速度状态，并设计预设性能控制器使得两航天器的相对运动状态在预设的边界内渐近收敛到期望状态。然后利用李雅普诺夫函数证明相对运动状态存在扰动时控制器的稳定性。该方法为闭环控制，且与模型无关，容易在线操作。仿真结果表明，在平动点轨道航天器存在未知扰动以及导航制导等不确定的情况下，利用所提交会控制律能够实现追踪航天器与目标航天器交会任务的高精度实时控制，具有较强鲁棒性。
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| 关 键 词： | 圆型限制性三体问题 平动点轨道 高阶积分链微分器 低复杂度预设性能控制 |
| 收稿时间： | 2018-07-09 |
Prescribed Performance Control for Libration Orbit Rendezvous Without Velocity Measurement |
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| ZHENG Dan dan,LUO Jian jun,YIN Ze yang,YUAN Jian ping.Prescribed Performance Control for Libration Orbit Rendezvous Without Velocity Measurement[J].Journal of Astronautics,2019,40(5):508-517. |
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| Authors: | ZHENG Dan dan LUO Jian jun YIN Ze yang YUAN Jian ping |
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| Affiliation: | 1. School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China; 2. Science and Technology on Aerospace Flight Dynamics Laboratory, X’an 710072, China |
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| Abstract: | The libration point rendezvous and docking with a non-cooperative target is investigated based on the high-order integral-chain differentiator and the prescribed performance control theory. Just knowing the relative position states, this paper proposes a new control law for spacecraft rendezvous during the terminal phase. Firstly, the high-order integral chain differentiator is used to estimate the relative velocity states of the two spacecraft, and a mode-free prescribed performance controller is designed, which makes the relative motion states of the two spacecraft asymptotically converge to the desired state within the prescribed boundaries. Then the Lyapunov function is used to prove the stability of the system when there are disturbances in the relative motion states. This method is of closed-loop control and independent of the model parameters, thus it is easy to be employed online. The simulation results show that even though there exist uncertainties such as the unknown disturbances and navigation and guidance errors, the proposed control law can achieve high-precision, real-time control of the spacecraft when tracking the non-cooperative target, and shows strong robustness.
The libration point rendezvous and docking with a non-cooperative target is investigated based on the high-order integral-chain differentiator and the prescribed performance control theory. Just knowing the relative position states, this paper proposes a new control law for spacecraft rendezvous during the terminal phase. Firstly, the high-order integral chain differentiator is used to estimate the relative velocity states of the two spacecraft, and a mode-free prescribed performance controller is designed, which makes the relative motion states of the two spacecraft asymptotically converge to the desired state within the prescribed boundaries. Then the Lyapunov function is used to prove the stability of the system when there are disturbances in the relative motion states. This method is of closed-loop control and independent of the model parameters, thus it is easy to be employed online. The simulation results show that even though there exist uncertainties such as the unknown disturbances and navigation and guidance errors, the proposed control law can achieve high-precision, real-time control of the spacecraft when tracking the non-cooperative target, and shows strong robustness. |
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| Keywords: | Circular restricted three body problem Libration point orbit High order integral chain differentiator Low complexity prescribed performance control |
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