To increase controllability of a large flexible antenna by modal optimization

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Wang, Feng^1 ; Wang, Pengpeng^1 ; Jiang, Wenjian^1

Xian Institute of Space Ratio Technology, Xian, China^1

关键词: Flexible antennas;    Large deployable antenna;    Modal characteristics;    Modal optimizations;    Moment of inertia;    Scanning mechanisms;    Stability control;    Support structures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012050/pdf
DOI  :  10.1088/1757-899X/274/1/012050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Large deployable antennas are widely used in aerospace engineering to meet the envelop limit of rocket fairing. The high flexibility and low damping of antenna has proposed critical requirement not only for stability control of the antenna itself, but also for attitude control of the satellite. This paper aims to increase controllability of a large flexible antenna by modal optimization. Firstly, Sensitivity analysis of antenna modal frequencies to stiffness of support structure and stiffness of scanning mechanism are conducted respectively. Secondly, Modal simulation results of antenna frequencies are given, influences of scanning angles on moment of inertia and modal frequencies are evaluated, and modal test is carried out to validate the simulation results. All the simulation and test results show that, after modal optimization the modal characteristic of the large deployable antenna meets the controllability requirement well.