Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A 5-DOF Ground Testbed for Developing Rendezvous/Docking Algorithm of a Nano-satellite

초소형 위성의 랑데부/도킹 알고리즘 개발을 위한 5자유도 지상 테스트베드

  • Received : 2015.08.25
  • Accepted : 2015.11.03
  • Published : 2015.12.01
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Abstract

This paper describes a 5-dof ground testbed which emulates micro-gravity environment for developing Rendezvous/docking algorithm of a nano-satellite. The testbed consists of two parts, the low part which eliminates friction force with ground and the upper part which has 3-dof rotational motion with respect to the low part. For Vison-based autonomous navigation algorithm, we use camera, LIDAR and AHRS as sensors and eight cold gas thrusters and three axis directional reaction wheels as actuators. All system software are implemented with C++ based on on-board computer and Linux OS.

이 논문은 지상에서 초소형 위성의 랑데부/도킹 알고리즘 개발을 위하여 미세중력환경을 모사해주는 5자유도 지상 테스트베드에 관하여 기술한다. 테스트베드는 지면과의 마찰력을 없애주는 하부와 이 하부에 연결되어 3자유도의 회전운동을 하는 상부로 구성된다. 영상기반의 항법알고리즘 개발을 위하여 카메라와 LIDAR, AHRS 센서를 사용하였고 액추에이터로는 8개의 냉가스 추력기와 3축 방향의 반작용 휠을 사용하였다. 모든 시스템 소프트웨어는 온보드와 리눅스를 기반으로 C++을 사용하여 구현되었다.

Keywords

References

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