Spacecraft spin axis reorientation method
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United States of America Patent
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Mar 1, 2005
Grant Date -
N/A
app pub date -
Nov 21, 2003
filing date -
Nov 21, 2003
priority date (Note) -
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Abstract
A reorientation controller for a satellite includes a slew rate command generator that generates a slew rate command signal (.omega..sub.r.sub..sub.-- .sub.cmd) in response to an attitude error signal. The attitude error signal corresponds to the difference between an initial attitude and a target attitude. The slew rate command generator may introduce a phase lead (.theta..sub.L) into the slew rate command signal (.omega..sub.r.sub..sub.-- .sub.cmd). The controller may perform a spin phase synchronization when the target attitude is unsynchronized in spin phase with the initial attitude. The satellite may perform a reorientation maneuver in response to the slew rate command signal (.omega..sub.r.sub..sub.-- .sub.cmd).
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