大型薄膜衍射太空望远镜的压电振动主动控制  

Piezoelectric Active Vibration Control of Large Membrane Diffraction Space Telescope

作　　者：王展鸿 喻恒 蔡国平[1] 周徐斌[2] 杜冬[2] WANG Zhanhong;YU Heng;CAI Guoping;ZHOU Xubin;DU Dong(Department of Engineering Mechanics,MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]上海交通大学工程力学系,水动力学教育部重点实验室,上海200240 [2]上海卫星工程研究所,上海201109

出　　处：《力学季刊》2024年第2期309-318,共10页Chinese Quarterly of Mechanics

基　　金：中央高校基本科研业务费专项基金(USCAST2021-12)。

摘　　要：随着航天技术的发展,大型薄膜衍射太空望远镜以其质量体积小、成像分辨率高、易折展等优点获得广泛的关注与研究.本文对大型薄膜衍射太空望远镜结构进行振动控制研究,给出基于压电作动器的振动控制方案.首先采用有限元方法建立结构的动力学模型,然后根据可控性准则进行作动器位置寻找,之后基于模糊Proportional-Derivative (PD)算法设计控制律,最后通过数值仿真验证本文研究方法的有效性.本文中,还通过数值仿真研究了压电作动器数量与控制稳定所需时间的对应关系,另外还进行了控制律鲁棒性的研究.With the development of aerospace technology,large membrane diffraction space telescopes have gained widespread attention and research due to their advantages such as small mass and volume,high optical imaging capability,and ease of folding and unfolding.In this paper,we conduct vibration control research on a large membrane diffraction space telescope and provide a vibration control strategy based on piezoelectric actuators.Firstly,the finite element method is used to establish the dynamic model of the structure.Then,the position of the actuator is studied based on the controllability criterion.The control law is designed based on the fuzzy proportional-derivative(PD)algorithm.Finally,the effectiveness of the proposed method in this paper is verified through numerical simulation.In this paper,the corresponding relationship between the number of piezoelectric actuators and the stability time is studied through numerical simulation,and the robustness of the control law is also investigated.

关 键 词：太空望远镜 压电作动器 模糊比例-微分 鲁棒性 

分 类 号：O322[理学—一般力学与力学基础] V476[理学—力学]