| Patent Number |
Title Of Patent |
Date Issued |
| 6860451 |
Spacecraft spin axis reorientation method |
March 1, 2005 |
| A reorientation controller for a satellite includes a slew rate command generator that generates a slew rate command signal (.omega..sub.r.sub..sub.-- .sub.cmd) in response to an attitude error signal. The attitude error signal corresponds to the difference between an initial attitud |
| 6062512 |
Wobble and nutation control, and spin stabilization for a spacecraft using momentum conserving d |
May 16, 2000 |
| 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 |
| 6032903 |
Cooperative control structures and methods for satellite spin axis control |
March 7, 2000 |
| 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 |
