Arrangement for attitude control and stabilization of a three ax

Details Arrangement for attitude control and stabilization of a three ax Arrangement for attitude control and stabilization of a three ax

1996-08-12

1999-08-03

Barefoot, Galen L.

Aeronautics and astronautics

Spacecraft

Attitude control

701 13, B64G 128

Patent

active

059314214

ABSTRACT:
An arrangement for attitude control and stabilization of a three-axis stabilized, bias momentum spacecraft which is equipped with a spin wheel arrangement that is capable of generating an angular momentum vector in a predeterminable direction, as well as control torques about all three axes of a spacecraft fixed system of coordinates, independently of one another. The control arrangement is equipped with an attitude sensor, which measures the attitude deviation about a first lateral axis (roll axis) oriented perpendicularly to the predetermined direction, with actuators for generating external control torques. A decoupling controller uses the deviations signal (roll angle phi) and takes into account the magnitude of the angular momentum generated by the spin wheel momentum arrangement, to provide a control signal which causes unidirectional decoupling of the roll dynamics from the yaw dynamics, for the spin wheel arrangement for generating a control torque about a second lateral axis (yaw axis) which is orthogonal to the predeterminable direction and to the first lateral axis.

REFERENCES:
patent: 3999729 (1976-12-01), Muhlfelder et al.
patent: 4230294 (1980-10-01), Pistiner
patent: 5012992 (1991-05-01), Salvatore
patent: 5201833 (1993-04-01), Goodzeit et al.
patent: 5269483 (1993-12-01), Flament
patent: 5279483 (1994-01-01), Blancke et al.
Okanuma, Toru et al "Yaw Attitude Error Estimation of the Three-Axes Stablized satellite by State Observer", Transactions of the Society of Instrument and Control Engineers (Japan), vol. 19, No. 11, pp. 66-71.
Schrempp, W., et al "Eureca Aocs Design and Flight Experience" Advances in the Astronautical Sciences, 1994, Pub 1, by Univelt Inc., San Diego, CA, pp. 103-118.

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