南京航空航天大学学报（英文版）2025，Vol.42Issue(6)：693-709,17.DOI:10.16356/j.1005-1120.2025.06.001
柔性望远镜航天器压电作动器降耦合最优布局优化
Coupling-Reduced Optimal Placement of Piezoelectric Actuators for Spacecraft with Flexible Telescope
摘要
Abstract
The oscillation of large space structure(LSS)can be easily induced because of its low vibration frequency.The coupling effect between LSS vibration control and attitude control can significantly reduce the overall performance of the control system,especially when the scale of flexible structure increases.This paper proposes an optimal placement method of piezoelectric stack actuators(PSAs)network which reduces the coupling effect between attitude and vibration control system.First,a spacecraft with a honeycomb-shaped telescope is designed for a resolution-critical imaging scenario.The coupling dynamics of the spacecraft is established using finite element method(FEM)and floating frame of reference formulation(FFRF).Second,a coupling-effect-reducing optimal placement criterion for PSAs based on coupling-matrix enhanced Gramian is designed to reduce the coupling effect excitation while balancing controllability.Additionally,a laddered multi-layered optimizing scheme is established to increase the speed and accuracy when solving the gigantic discrete optimization problem.Finally,the effectiveness of the proposed method is illustrated through numerical simulation.关键词
大型空间结构/挠性航天器控制/作动器布局优化/振动控制/刚柔耦合航天器Key words
large space structure(LSS)/flexible spacecraft control/optimal placement of actuator/vibration control/rigid-flexible coupling spacecraft分类
航空航天引用本文复制引用
郭延宁,邓宇辰,冉光滔,刘付成..柔性望远镜航天器压电作动器降耦合最优布局优化[J].南京航空航天大学学报（英文版）,2025,42(6):693-709,17.基金项目
This work was supported by National Natural Science Foundation of China(No.U23B6001). （No.U23B6001）
