考虑连接非线性的大型桁架天线分散协调控制

刘付成; 朱东方

doi:10.7527/S1000-6893.2020.24890

航空学报 >

2021 , Vol. 42 >Issue 11: 524890 - 524890

DOI: https://doi.org/10.7527/S1000-6893.2020.24890

论文

考虑连接非线性的大型桁架天线分散协调控制

刘付成 ,
朱东方

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1. 上海航天技术研究院, 上海 201109;
2. 上海航天控制技术研究所, 上海 201109;
3. 上海市空间智能控制技术重点实验室, 上海 201109

收稿日期: 2020-10-19

修回日期: 2020-11-30

网络出版日期: 2021-01-26

基金资助

国家自然科学基金（61903245，61803258）；上海市青年科技启明星计划（19QB1402100，20QA1404400）

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Distributed coordinated control for large flexible truss antenna considering connection nonlinearity

LIU Fucheng ,
ZHU Dongfang

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1. Shanghai Academy of Spaceflight Technology, Shanghai 201109, China;
2. Shanghai Aerospace Control Technology Institute, Shanghai 201109, China;
3. Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109, China

Received date: 2020-10-19

Revised date: 2020-11-30

Online published: 2021-01-26

Supported by

National Natural Science Foundation of China (61903245, 61803258); Shanghai Rising-Star Program (19QB1402100, 20QA1404400)

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摘要

针对含非线性连接的大型桁架式天线，考虑铰链非线性所产生的影响，基于连接子结构模态综合建模方法，建立其低阶非线性动力学模型。在此基础上，将动力学模型转换为分散参数化模型，并考虑状态变量不完全可测因素，设计适用于一致性理论的最优观测器。然后基于图论的思想提出桁架式天线的一致性形面保持控制方法，不仅实现了桁架式天线的高精度形面保持控制，同时对作动执行机构的失效具有容错性。仿真结果表明了所提控制方法的有效性。

关键词： 桁架式天线; 非线性连接; 分散协调控制; 一致性; 鲁棒控制

本文引用格式

刘付成 , 朱东方 . 考虑连接非线性的大型桁架天线分散协调控制[J]. 航空学报, 2021 , 42(11) : 524890 -524890 . DOI: 10.7527/S1000-6893.2020.24890

Abstract

A dynamic model is established for the large space flexible structure with nonlinear connections based on the theory of dynamic substructure. On this basis, the dynamic model of the flexible structure vibration subsystem is converted into a distributed-parametric system model. Considering the states of the structure cannot be directly measured by any type of sensor, an optimum consensus observer is designed to estimate the main system's modal coordinates. Using the graph theory, a new leader-follower-based consensus vibration controller is proposed to actively suppress the oscillations in distributed parameter flexible structures. The proposed control method can realize high-precision shape maintaining control of large space flexible structure, and is robust to the failure of the structure control elements. The simulation results show the effectiveness of the proposed control method.

Key words： truss antenna; nonlinear connection; distributed coordinated control; consistency; robust control

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