Limit cycle analysis of large space telescope with CMG nonlinearity

Details Limit cycle analysis of large space telescope with CMG nonlinearity Limit cycle analysis of large space telescope with CMG nonlinearity

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7531965s&link_type=abstract

Presented at the AIAA and Control of Flight Conf., Anaheim, Calif., 5-9 Aug. 1974

Mathematics

Functional Analysis

Control Moment Gyroscopes, Hubble Space Telescope, Friction, Functional Analysis, Mathematical Models, Nonlinearity, Self Oscillation

Scientific paper

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.

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