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Magnetic momentum management for a geostationary satellite platform

Magnetic momentum management for a geostationary satellite platform

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The attitude control system of three-axis stabilised geostationary platforms is usually based on a set of reaction wheels, the operation of which requires periodic desaturation manoeuvres in order to dump the angular momentum accumulated because of external secular disturbance torques. The need for such manoeuvres can be minimised by careful design of the satellite platform. In this paper, the control issues associated with the adoption of a magnetic actuator for (partial) momentum dumping on a geostationary platform are discussed, with specific reference to the robustness issues arising due to the highly uncertain space environment at geostationary earth orbit altitude.

Inspec keywords: robust control; vehicle dynamics; torque control; electromagnetic actuators; attitude control; artificial satellites

Other keywords: geostationary satellite platform; three-axis stabilised geostationary platforms; magnetic actuator; external secular disturbance torque; magnetic momentum management; attitude control system; momentum dumping; periodic desaturation manoeuvres

Subjects: General aspects of aircraft, space vehicles and satellites; Control gear and apparatus; Control technology and theory (production); Spatial variables control; Other final control equipment; Vehicle mechanics; Aerospace control; Stability in control theory; Mechanical variables control

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