基于分布式剪刀构型控制力矩陀螺的大尺寸空间结构振动抑制  

Vibration Suppression of Large Space Structure Based on Distributed V-Gimbaled CMG

作　　者：郭川东 胡权[1] 方丽萍 张景瑞[1] 张军[2] 李公军[2] GUO Chuan-dong;HU Quan;FANG Li-ping;ZHANG Jing-rui;ZHANG Jun;LI Gong-jun(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;Beijing Institute of Control Engineering,Beijing 100094,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]北京控制工程研究所,北京100094

出　　处：《宇航学报》2022年第3期310-318,共9页Journal of Astronautics

基　　金：国家自然科学基金(11872011)。

摘　　要：针对柔性航天器上大尺寸柔性结构的振动抑制问题,提出在结构上分布安装剪刀构型的微型控制力矩陀螺(CMG),实现空间柔性结构的振动抑制。首先建立携带分布式剪刀构型CMG的约束边界大尺寸空间结构的动力学方程,然后基于Lyapunov方法设计剪刀构型CMG的框架轴操纵律,结合工程实际的“死区”现象,对所设计操纵律进行改进。最后,以安装有剪刀构型CMG的柔性桁架为仿真对象,通过数值算例验证控制策略的有效性。结果表明,所设计避“死区”操纵律可以较好实现桁架振动抑制,其改善了振动抑制的性能。Aiming at the vibration suppression of large-scale flexible structures on a flexible spacecraft,a set of distributed V-gimbaled control moment gyros(CMG)in an arbitrary configuration is taken into consideration.The dynamics equations of a large-scale flexible structure with distributed V-gimbaled CMG are established firstly.Then the steering law of the V-gimbaled CMG is designed based on the Lyapunov method,which is improved with consideration of the“dead zone”phenomenon in engineering practice.Finally,numerical examples are presented for a flexible truss with distributed V-gimbaled CMG,to verify the effectiveness of the proposed control strategies.The results show that designed steering law can achieve better vibration suppression of the truss and improve the performence of vibration suppression.

关 键 词：大尺寸空间结构 剪刀构型CMG 振动抑制 操纵律 

分 类 号：V488.2[航空宇航科学技术]