Refined Metamodel Disturbance Observer-Based Control for Coarse Pointing Assembly Under Constraints  

作　　者：Yongjian Yang Zeyu Bao Jianzhong Qiao Yukai Zhu Lei Guo 

机构地区：[1]School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,P.R.China [2]School of Astronautics,Beihang University,Beijing 100191,P.R.China

出　　处：《Guidance, Navigation and Control》2024年第4期37-57,共21页制导、导航与控制(英文)

基　　金：supported by the Project of China Aerospace Science and Technology Corporation under Grant YF-ZZYF-2022-088

摘　　要：The target tracking performance of the coarse pointing assembly(CPA) is a critical factor in determining the data transmission efficiency of the inter-satellite laser communication. However, under the influence of multiple disturbances, such as gimbal coupling torque, friction, and satellite-transmitted vibration, the angle tracking performance of the CPA can be decreased,which then affects the safety of the system in terms of angular velocity. To address the performance and safety requirements of the CPA, this paper proposes a refined metamodel disturbance observer-based state constraints controller. First, a refined metamodel disturbance observer is proposed to achieve accurate disturbance estimation by combining the data-driven state-space Kriging metamodeling method with a refined disturbance observer. Both disturbance numerical data and partially known information(e.g. vibration frequency and structure)are fully utilized to reduce estimation conservatism. Second, based on the observer, a state constraint controller is designed to ensure the angle tracking performance and angular velocity constraints. Finally, the effectiveness and robustness of the proposed control method are validated through numerical simulations, indicating an enhanced angle tracking performance compared to the traditional disturbance observer-based control method.

关 键 词：Laser communication coarse pointing assembly METAMODELING disturbance observer-based control state constraints 

分 类 号：TN929.1[电子电信—通信与信息系统] TP273[电子电信—信息与通信工程] V443.1[自动化与计算机技术—检测技术与自动化装置]