The robustness properties of collocated direct velocity feedback controllers used for damping enhancement in large, flexible space structures are investigated. It is proved that the closed-loop system using such controllers is asymptotically stable when: (1) unmodeled linear time-invariant dynamics (such as sensors/actuators) are present, provided that the phase angle of such dynamics is between - 90 and 90 , (2) time-varying or invariant nonlinearities lying in the first and the third quadrant are present, or (3) sector-type nonlinearities following first-order stable dynamics are present in the feedback loop.
Robustness of velocity feedback controllers for flexible spacecraft
Unempfindlichkeit von Geschwindigkeitsreglern fuer flexible Raumfahrzeuge
IEEE Transactions on Aerospace and Electronic Systems ; AES-21 , 1 ; 2-7
1985
6 Seiten, 11 Quellen
Aufsatz (Zeitschrift)
Englisch