The existence and characteristics of self-sustained oscillations were studied in the Large Space Telescope (LST) system due to the presence of nonlinear gimbal friction in the control moment gyroscopes (CMG's). A continuous data single-axis model of the LST is considered. A solid friction model is used to represent CMG gimbal friction. A rigorous mathematical model is derived for use in a continuous describing function analysis. Conditions for self-sustained oscillations are then determined.
Limit cycle analysis of large space telescope with CMG nonlinearity
AIAA and Control of Flight Conf. ; 1974 ; Anaheim, CA, United States
1975-06-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
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