Method to reorient a spacecraft using only initial single axis a

Aeronautics and astronautics – Spacecraft – Attitude control

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

244164, 244171, B64G 126

Patent

active

060682175

ABSTRACT:
A method for inertially aligning a spacecraft along an axis, comprising the steps of using quaternion feedback control to reorient the spacecraft, and during the step of reorienting, using rate integrating gyroscopes in a pulse rebalance loop. The method operates to orient the spacecraft along an inertial direction of interest by the steps of operating a sensor to provide an initial fix on the inertial direction of interest; repetitively determining a difference between a commanded quaternion and a quaternion estimated based on sensed angular rates; and selectively applying torques to the spacecraft so as to drive the difference towards zero such that a spacecraft vector is aligned with the inertia direction of interest, thereby orienting the spacecraft. One mode of operation maintains the spacecraft fixed in orientation, while another mode of operation rotates the spacecraft about the direction of interest by using a bias-rate blind quaternion propagation technique.

REFERENCES:
patent: 4084772 (1978-04-01), Muhlfelder
patent: 4489383 (1984-12-01), Schmidt, Jr.
patent: 4521855 (1985-06-01), Lehner et al.
patent: 4599697 (1986-07-01), Chan et al.
patent: 4684084 (1987-08-01), Fuldner et al.
patent: 4725024 (1988-02-01), Vorlicek
patent: 4758957 (1988-07-01), Hubert et al.
patent: 4759517 (1988-07-01), Clark
patent: 4767084 (1988-08-01), Chan et al.
patent: 4848706 (1989-07-01), Garg et al.
patent: 4931942 (1990-06-01), Garg et al.
patent: 5058835 (1991-10-01), Goodzeit et al.
patent: 5109346 (1992-04-01), Wertz
patent: 5140525 (1992-08-01), Shankar et al.
patent: 5184790 (1993-02-01), Fowell
patent: 5222023 (1993-06-01), Liu et al.
patent: 5349532 (1994-09-01), Tilley et al.
patent: 5400252 (1995-03-01), Kazimi et al.
patent: 5452869 (1995-09-01), Basuthakur et al.
patent: 5459669 (1995-10-01), Adsit et al.
patent: 5473746 (1995-12-01), Pritt et al.
patent: 5508932 (1996-04-01), Achkar et al.
patent: 5608634 (1997-03-01), Goodzeit et al.
"Quaternion Feedback for Spacecraft Large Angle Maneuvers", Bong Wie et al., J. Guidance, vol. 8 No. 3, May, Jun. 1985, pp. 360-365.
"Attitude Stabilization of Flexible Spacecraft During Stationkeeping Maneuvers", Bong Wie et al., J. Guidance, vol. 7, No.4, pp. 430-436, Jul.-Aug. 1984.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method to reorient a spacecraft using only initial single axis a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method to reorient a spacecraft using only initial single axis a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to reorient a spacecraft using only initial single axis a will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1904819

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.