Title :
Disturbance instabilities in an adaptive system
Author :
Riedle, Bradley ; Cyr, Bernie ; Kokotovic, Petar V.
Author_Institution :
Univ. of Illinois, Urbana, IL, USA
fDate :
9/1/1984 12:00:00 AM
Abstract :
Two types of disturbance instability of simple adaptive schemes are analyzed. A drift equation shows how stable equilibria are forced to infinity by infrequent but persistent switches of a constant disturbance. The σ-modification proposed by P. Ioannou counteracts these instabilities.
Keywords :
Adaptive control, linear systems; Asymptotic stability, linear systems; Stability, linear systems; Adaptive control; Adaptive systems; Ellipsoids; Equations; Force feedback; Frequency; H infinity control; Lyapunov method; Robustness; Stability;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.1984.1103662
