Volume 42 Issue 4
Apr.  2016
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ZHAO Guowei, ZHANG Xingmin, TANG Bin, et al. Properties of pendulum motion of tether tugging system and its stable control[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 694-702. doi: 10.13700/j.bh.1001-5965.2015.0286(in Chinese)
Citation: ZHAO Guowei, ZHANG Xingmin, TANG Bin, et al. Properties of pendulum motion of tether tugging system and its stable control[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(4): 694-702. doi: 10.13700/j.bh.1001-5965.2015.0286(in Chinese)

Properties of pendulum motion of tether tugging system and its stable control

doi: 10.13700/j.bh.1001-5965.2015.0286
Funds:  National Natural Science Foundation of China (11572016)
  • Received Date: 06 May 2015
  • Rev Recd Date: 11 Sep 2015
  • Publish Date: 20 Apr 2016
  • Taking account of the attitude motion of tethered system, mission satellite and abandoned satellite, dynamics and control models of tethered system are established. According to the flight process under a constant thrust in the tangential direction, an attitude control of mission satellite is adopted on the basis of thrusters and momentum wheels; then, the characteristics of the oscillation of abandoned satellite, the pendulum motion of tethered system and the attitude motion of mission satellite are studied and effects among each other are analyzed. In order to ensure the flight safety of tethered system, the tether tension control which includes damp control law and position-keeping control law, and mission satellite attitude control are adopted. Numerical simulation results indicate that the regular oscillation of abandoned satellite at a specific angular frequency which caused by the offset of hanging position may arouse high order pendulum motion of tethered system during deorbiting under a constant thrust. Furthermore, the attitude motions of satellites are the main factors which bring disturbance torque to mission satellite. In addition, the oscillation of abandoned satellite is damped out and the distance between satellites is maintained by the adopted tension controller, which guarantees the flight safety and stability of tethered system combining with mission satellite attitude control and also reduces energy consuming of mission satellite.

     

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