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Line-of-sight stabilization of an underactuated satellite controlled by wheels

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The challenging issue of stabilizing the attitude of an underactuated satellite using two wheels in the non-zero angular momentum mode is investigated in this paper. Considering that this kind of satellite cannot be stabilized by time-invariant smooth control laws to an arbitrary equilibrium point unless it meets some constraint conditions, a nonlinear singular controller is presented, which can drive the line-of-sight of the satellite to an inertia direction from any initial attitude. Several simulation results show the asymptotical stability of the proposed controller under the conservation of the total angular momentum, what's more, the controller is not sensitive to the initial attitude.

Original languageEnglish
Pages (from-to)57-65
Number of pages9
JournalYuhang Xuebao/Journal of Astronautics
Volume38
Issue number1
DOIs
StatePublished - 30 Jan 2017

Keywords

  • Attitude control
  • Line-of-sight
  • Nonlinear
  • Singular controller
  • Underactuated

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