Computer Science – Performance
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980fmet.symps....c&link_type=abstract
In its Fifth Ann. Flight Mech./Estimation Theory Symp. 19 p (SEE N81-11070 02-13)
Computer Science
Performance
Hubble Space Telescope, Magnetic Control, Momentum, Pointing Control Systems, Reaction Wheels, Torquers, Astrodynamics, Dynamic Control, Feedback Control, Magnetic Dipoles, Onboard Data Processing, Spacecraft Motion
Scientific paper
Techniques appropriate for implementation onboard the space telescope and other spacecraft to manage the accumulation of momentum in reaction wheel control systems using magnetic torquing coils are described. Generalized analytical equations are derived for momentum control laws that command the magnetic torquers. These control laws naturally fall into two main categories according to the methods used for updating the magnetic dipole command: closed loop, in which the update is based on current measurements to achieve a desired torque instantaneously, and open-loop, in which the update is based on predicted information to achieve a desired momentum at the end of a period of time. Physical interpretations of control laws in general and of the Space Telescope cross product and minimum energy control laws in particular are presented, and their merits and drawbacks are discussed. A technique for retaining the advantages of both the open-loop and the closed-loop control laws is introduced. Simulation results are presented to compare the performance of these control laws in the Space Telescope environment.
Chen Li-Chyong
Davenport P. B.
Sturch Conrad R.
No associations
LandOfFree
Spacecraft momentum management procedures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spacecraft momentum management procedures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spacecraft momentum management procedures will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-948232