Satellite spin vector control with sun sensor
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United States of America Patent
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-
Mar 23, 1999
Grant Date -
N/A
app pub date -
Mar 18, 1996
filing date -
Mar 18, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
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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