南京航空航天大学学报（英文版）2025，Vol.42Issue(z1)：26-37,12.DOI:10.16356/j.1005-1120.2025.S.003
基于多观测器的挠性航天器预设时间保证性能姿态跟踪控制
Predefined-Time Guaranteed Performance Attitude Tracking Control of Flexible Spacecraft Based on Multi-observers
摘要
Abstract
To overcome external environmental disturbances,inertial parameter uncertainties and vibration of flexible modes in the process of attitude tracking,a comprehensively effective predefined-time guaranteed performance controller based on multi-observers for flexible spacecraft is proposed.First,to prevent unwinding phenomenon in attitude description,the rotation matrix is used to represent the spacecraft's attitude.Second,the flexible modes observer which can guarantee predefined-time convergence is designed,for the case where flexible vibrations are unmeasurable in practice.What's more,the disturbance observer is applied to estimate and compensate the lumped disturbances to improve the robustness of attitude control.A predefined-time controller is proposed to satisfy the prescribed performance and stabilize the attitude tracking system via barrier Lyapunov function.Finally,through comparative numerical simulations,the proposed controller can achieve high-precision convergence compared with the existing finite-time attitude tracking controller.This paper provides certain references for the high-precision predefined-time prescribed performance attitude tracking of flexible spacecraft with multi-disturbance.关键词
挠性航天器/保证性能/预设时间控制/多观测器Key words
flexible spacecraft/guaranteed performance/predefined-time control/multi-observers引用本文复制引用
邓兴婷,张子扬,王北超,王国华,李芳芳,李爽..基于多观测器的挠性航天器预设时间保证性能姿态跟踪控制[J].南京航空航天大学学报（英文版）,2025,42(z1):26-37,12.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(No.12472045)and the Shanghai Aerospace Science and Technology Innova-tion Fund(No.SAST2022-036). （No.12472045）
