Satellite spin vector control with sun sensor

Aeronautics and astronautics – Spacecraft – Attitude control

Patent

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244170, 244171, 701 13, B64G 126, B64G 136, B64G 138

Patent

active

058848690

ABSTRACT:
A method for simultaneously controlling satellite nutation, sun angle and attitude walk using a dual-slit sun sensor and thrusters. The sun angle and nutation angles are computed from sun sensor data, and the thrusters are fired when their use improves both sun angle and nutation. Precession around the sun line is controlled by constraining firing, in the simplest case, firing only when the angular momentum is precessed directly toward or away from the sun. Precession maneuvers are implemented by commanding a new sun angle and precession plane spin phase.

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Wertz, James R., "Spacecraft Attitude Determination and Control," D. Reideal Publishing, 1978, Sections 7.1.1 and 16.3.2 and Figs. 22.2 and 22.3.
Taylor, Javin M. et al., "Use of Precession Modulation for Nutation Control Spin-Stablized Spacecraft," J. Spacecraft, vol. 12, No. 5, May 1975, pp. 259-260.
Smay, John W., "Attitude Control for the Westar/Palapa Recovery Mission," SAE Aerospace Control and Guidance Committee, Mar. 1985.
Cope, Paul, "Guidance and Control of Meteosat, Second Generation," ESA GNC Conference, Apr. 1994.
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