With the satellite now Nadir pointing (ie the imager aperture and antennas continuously faces in the direction of Earth), our communication with the satellite has improved further. The next step is to start commissioning the various attitude sensors so that we can activate full three-axis control on the satellite.All other systems continue to operate within nominal limits.
03 October 2009
The ADCS computer now runs a Y-momentum wheel controller that stabilizes the satellite with near-zero roll and yaw angles using data from the coarse sun sensors and a magnetorquer nutation damping controller. The main solar panel faces the sun in this control mode. The Y-wheel is controlled to track a reference pitch angle (as close as possible to zero).
Posted by Sunspace Administrator at 10/03/2009 11:50:00 AM