Cooperative control structures and methods for satellite spin ax

Details Cooperative control structures and methods for satellite spin ax Cooperative control structures and methods for satellite spin ax

1998-02-12

2000-03-07

Poon, Peter M.

Aeronautics and astronautics

Spacecraft

Attitude control

244164, 244169, B64G 128, B64G 126

Patent

active

060329033

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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Lorell, Kenneth, et al., An Automatic Mass-Trim System for Spinning Spacecraft, AIAA Journal, vol. 10, No. 8, Aug., 1972, pp. 10-13.

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