Development of shape monitoring system using SMA dipole antenna on a deployable membrane structure
Development of shape monitoring system using SMA dipole antenna on a deployable membrane structure
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DOI：
10.1016/j.actaastro.2019.04.007
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发表时间：
2019-07
影响因子：
3.5
通讯作者：
A. Torisaka;D. Hayashi;S. Kawasaki;N. Nishii;Y. Terada;S. Yokoyama;H. Sakamoto
中科院分区：
文献类型：
--
作者：
A. Torisaka;D. Hayashi;S. Kawasaki;N. Nishii;Y. Terada;S. Yokoyama;H. Sakamoto
本文提出了使用具有形状恢复功能的带状材料来消除在轨道上的使命设备（例如贴片天线）的折叠图案中在膜中产生的卷曲，其中方向性是重要的。本文采用形状记忆合金（SMA）作为材料，研究了形状记忆合金的形状恢复对褶皱的影响。此外，通过将SMA材料用于天线的辐射部分，提出了通过评估由于SMA的形状变化而引起的天线增益的变化来进行形状监测的方法。本研究采用一种工作原理和结构最简单的偶极天线。研制了一种使用SMA材料和数据采集电路板的偶极子天线，以确定SMA形状变化引起的接收功率变化。此外，通过获得天线的输入特性和辐射方向图，研究了使用薄偶极子天线实现形状监测的可行性。最后总结了该系统在实际卫星上应用的可能性。
This paper proposes the use of a strip material with shape recovery function for removing the curl generated in the membrane in the folding pattern of mission devices in orbit, such as patch antenna, where directionality is important. Shape memory alloy (SMA) is adopted as the material in this study, and the distinction of wrinkles caused by its shape recovery is studied. Furthermore, by utilizing the SMA material for the radiating part of the antenna, a method of shape monitoring by evaluating the change in antenna gain due to the shape-change of the SMA is proposed. A dipole antenna with the simplest operation principle and structure was used in this research. A dipole antenna using the SMA material and a circuit board for data acquisition was developed to determine the change in received power caused by the shape change of the SMA. Further, the feasibility of realizing shape monitoring using a thin dipole antenna was investigated by obtaining the input characteristics and radiation pattern of the antenna. Finally, the possibility of employing this system in an actual satellite was summarized.