Satellite Attitude Acquisition by a Momentum Bias System
This paper discusses a simple method for satellite attitude acquisition from any orientation by a momentum bias system. First, earth is acquired using the Pulsewidth Pulse Frequency Modulator(PWPFM) controllers, followed by yaw attitude acquisition by the momentum bias system. The delayed pulse logic controller with offset torquing for roll-yaw control is not efficient for all class of satellites, particularly when the nutation frequency is not much greater than the orbital frequency. A control scheme is evolved wherein, the directions of the bias momentum and the offset torque pulses are suitably adjusted to make the nutation clockwise, which keeps the roll error around a small band while controlling the yaw error from any value.
KeywordsOrbital Frequency Pitch Axis Nutation Frequency Indian Remote Sense Attitude Acquisition
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- Goel, P.S.,and P. Kudva: 1982, ‘A Delayed Pulse Roll/Yaw Controller for a Momentum Biased Spacecraft’, Proc. Joint IFAC/ESA, Symposium on Automatic Control in Space, Noordwijkerhout, The Netherlands.Google Scholar