Method and apparatus for stepping space craft mechanisms at...

Details Method and apparatus for stepping space craft mechanisms at... Method and apparatus for stepping space craft mechanisms at...

2005-07-12

2005-07-12

Nguyen, Thu V. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

C244S173300, C318S114000

Reexamination Certificate

active

06917861

ABSTRACT:
A method and system for reducing the stepping disturbances generated by a stepping mechanism is disclosed. The method is to select a desired stepping rate to step the stepping mechanism. The method further selects two desired disturbance stepping rates, one fast stepping rate and one slow stepping rate to alternate stepping of the mechanism with the two stepping rates to generate an average stepping rate that is required for the mechanism, and thereby the stepping mechanism will not significantly excite the spacecraft structural mode, and the stepping disturbance is significantly reduced while the mechanism still perform nominally its desired stepping maneuvers.

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patent: 5520359 (1996-05-01), Merhav et al.
patent: 5610848 (1997-03-01), Fowell
patent: 6003817 (1999-12-01), Basuthakur et al.
patent: 6311929 (2001-11-01), Kazimi et al.
patent: 6311931 (2001-11-01), Smay

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