An active control strategy to suppress nonlinear vibrations of large space membranes

作者：Shi, Hang; Wang, Chao; Liu, Lilan; Gao, Zenggui; Xie, Yangmin^*

来源：Acta Astronautica, 2019, 155: 80-89.

DOI：10.1016/j.actaastro.2018.11.042

• Large space membrane
• Active vibration suppression
• Nonlinear vibration

Large space membranes have been widely used in many space projects to develop extremely large and lightweight SAR antennas, solar arrays and solar sails, and the nonlinear structural vibrations induced by on-orbit disturbances should be suppressed to satisfy the mission requirements. In this paper, the nonlinear dynamic behaviors of a typical large space membrane, which can not be accurately described by natural frequencies and mode shapes, are investigated by the trustworthy iterative membrane property modeling approach. Based on the discussions of the controller design challenges from such nonlinearity, this paper proposes a distributed control strategy to actively suppress the nonlinear membrane vibration, and comparatively evaluates three different actuating and sensing placements to obtain superior vibration suppression performance. Very promising results numerically demonstrate that the proposed control strategy is theoretically feasible and has great potential to be used in the design of active vibration suppression systems for large space membrane applications.

• 出版日期2019-2
• 单位上海宇航系统工程研究所; 上海大学