Cooperative control structures and methods for satellite spin axis control
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United States of America Patent
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Mar 7, 2000
Grant Date -
N/A
app pub date -
Feb 12, 1998
filing date -
Feb 12, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Structures and methods are provided to effect satellite maneuvers in the presence of disturbance torques with enhanced fuel efficiency. A thruster control loop is combined with a wheel control loop in which the wheels respond to an estimate of the disturbance torques (e.g., an angular acceleration estimate, a thruster torque command or a filtered thruster torque command) to create a counteracting gyroscopic torque. Simulations of the invention's methods have shown they have the authority of all-thruster control systems and fuel efficiency that rivals that that of all-wheel control systems.
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