JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleDemonstration of 2-D antenna deployment using SMA actuator for solar power satellite
Author(jpn)青木 秀行; 金子 聰; 田中 孝治; 佐々木 進
Author(eng)Aoki, Hideyuki; Kaneko, Tsutomu; Tanaka, Koji; Sasaki, Susumu
Author Affiliation(jpn)東京理科大学; 東京理科大学; 宇宙航空研究開発機構 宇宙科学研究本部; 宇宙航空研究開発機構 宇宙科学研究本部
Author Affiliation(eng)Tokyo University of Science; Tokyo University of Science; Japan Aerospace Exploration Agency Institute of Space and Astronautical Science; Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Issue Date2006-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第25回宇宙エネルギーシンポジウム 平成17年度
The Twenty-fifth Space Energy Symposium March 10, 2006
Start page59
End page63
Publication date2006-06
Abstract2-D development of the panel antenna using smart actuators has been studied. This actuator that employs a shape memory alloy (SMA) has several advantages as; (1) Simple and light-weight structure as compared with motor system. (2) Deployment speed is well controlled to minimize the effect on the attitude of the system and to suppress the shock when the panel is fully deployed. (3) The shape of the antenna panels can be controlled using two types of SMA actuators, (this function can be used to compensate the thermal deformation of the panels). (4) Oscillation of the panels can be suppressed using super elastic state of the SMA actuator. We have fabricated the two dimensional unfolded panel that consisted of 4 x 8 sub-panels with the SMA hinges, batteries and control circuits. The size of the sub-panel is around 12 x 24 cm. SMA generates heat when electric power is provided. Temperature of the SMA can be controlled by switching electric power on and off. The demonstration model is equipped with a latch mechanism using the magnet. In the laboratory test, it is confirmed that the hinge with the SMA coils work well as expected. Control of the shape of the panel surface using angle sensor and smart actuator is still remained for future work.
Keywordsshape memory alloy; large space structure; solar power satellite; microwave power beaming; deployment; antenna design; slot antenna; space solar power system; attitude control; structural vibration; actuator; 形状記憶合金; 大型宇宙構造物; 太陽発電衛星; マイクロ波パワービーミング; 展開; アンテナ設計; スロットアンテナ; 宇宙太陽光利用システム; 姿勢制御; 構造振動; アクチュエータ
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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