University of Tokyo Graduate School of Engineering
University of Tokyo Graduate School of Engineering
University of Tokyo Graduate School of Engineering
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
平成16年度アストロダイナミクスシンポジウム:講演後刷り集
雑誌名(英)
ISAS proceedings of 14th Workshop on Astrodynamics and Flight Mechanics 2004: A Collection of Technical Papers
On-orbit services such as repairing failed satellites and assembling space structures are expected to be important space missions in near future. Tethered Retriever is proposed as an agent of retrieving failed satellites or assembling parts. This Tethered Retriever, TR for short, is a small satellite tethered to the Service Satellite, which can repair parts or supply expendables to the satellites to be served (it is called the Target). The TR is released from the Service Satellite, flies toward the Target, captures it, and comes back to the Service Satellite. During the travel to the Target, the Service Satellite controls tension of the tether to decelerate the TR. And after capturing, the Service Satellite rolls up the tether to retrieve the TR and the target. By making use of tether in TR system, there can be benefit especially in the point that the fuel consumption will be much reduced. Besides, the TR will not be lost even when some critical failures occur in the TR due to the physical connection. In this paper, discussed is the collaborative control of tension of the Service Satellite and thruster of the TR, mainly in the approach phase to the Target. Performed are numerical simulations as well as experiments using air-bearing test bed. Through the results of this study, it was shown that the proposed control algorithm is stable and robust against various kinds of errors.
Guidance and control of Tethered Retriever for on-orbit service missions
