Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1997-08-27
2000-05-16
Eldred, J. Woodrow
Aeronautics and astronautics
Spacecraft
Attitude control
244165, B64G 138
Patent
active
060625120
ABSTRACT:
A method of damping nutation and removing wobble of a spacecraft provided with first and second momentum sources having linearly independent momentum components in the plane transverse to the given axis. The method includes sensing angular velocities of the spacecraft along orthogonal first and second axes in the transverse plane, and generating velocity signals representative of the angular velocities. The velocity signals are processed to form control signals representative of desired torques for driving the momentum sources. The desired torques have a first additive component proportional to the angular velocities for removing the wobble and a second additive component proportional to the first derivatives of the angular velocities for damping the nutation.
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John E. White and Rush D. Robinnet III, Sandia National Laboratories, Albuquerque, New Mexico, Title: "Principal Axis Misalignment Control for Deconing of Spinning Spacecraft", vol. 17, No. 4, Jul.-Aug. 1994, Journal of Guidance, Control and Dynamics, pp. 823 to 830.
Barsky Michael F.
Wang Qinghong W.
Eldred J. Woodrow
Grunebach Georgann
Gudmestad Terje
Hughes Electronics Corporation
Sales Michael W.
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