PAPER TITLE :GRAVITY GRADIENT SATELLITE STABILISATION WITH ACTIVE DAMPER USING OPTIMAL CONTROL

JOURNAL Of SUSTAINABLE TECHNOLOGY | VOLUME 3 NUMBER 1 2012

Paper Details

  • Author(s) : AHMED, O.D. ONOGU, M.I. and OMIZEGBA, E.E
  • Abstract:

The major challenge of passive attitude control for small satellite are the lack of accuracy and the inability to effectively damp oscillations associated with attitude reorientation due to the presence of external disturbances on the satellite. To reduce these undesired oscillations, passive dampers may be used, but they take a long time to achieve the required results. A study of an active damper that applies a magnetic torque is presented as an alternative control strategy of small satellites to produce the needed moments to counteract the external disturbances. Linear Quadratic Gaussian (LQG) controller was designed for the attitude control of small satellites, incorporating active magnetic damping. Results show that both the attitude reorientation and active damping were achieved in less than 30s.