On the momentum transfer maneuver for initial acquisition using multi-wheels - Its analysis and application

Details On the momentum transfer maneuver for initial acquisition using multi-wheels - Its analysis and application On the momentum transfer maneuver for initial acquisition using multi-wheels - Its analysis and application

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gnc..conf.1583d&link_type=abstract

IN: AIAA Guidance, Navigation and Control Conference, Hilton Head Island, SC, Aug. 10-12, 1992, Technical Papers. Pt. 3 (A92-551

Astronomy and Astrophysics

Astronomy

Automatic Control, Control Stability, Liapunov Functions, Momentum Transfer, Spacecraft Maneuvers, Spacecraft Stability, Astro Missions (Sts), Kinetic Energy, Scientific Satellites, X Ray Astronomy, X Ray Telescopes

Scientific paper

This paper proposes a control law that stabilizes momentum transfer maneuver using multiwheels. The law is proved analytically via Liapunov's direct method. As another consequence, this paper point out equilibrium 'singular states' which closed momentum transfer control may fall into, and from which any evasive path cannot be found. Sufficient conditions are provided so that such singular states can be circumvented by an appropriate control law proposed. It is revealed that six singular points including trivial target state exist in general. It is also shown that appropriate choice of a control law reduces the number of 'singular states'. As a practical application, numerical examples are shown which are related to the scientific X-ray telescope satellite ASTRO-D, to be launched in February, 1993.

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