Title :
Comments on the robust stability analysis of adaptive controllers using normalizations
Author :
Khargonekar, Pramod P. ; Ortega, Romeo
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
4/1/1989 12:00:00 AM
Abstract :
Some results on robustness to unmodeled dynamics of adaptive controllers using normalization factors are analyzed. It is shown that the proofs given by various authors fail to establish that the proposed adaptive controllers provide a nonvanishing robustness margin for the class of unmodeled dynamics considered.<>
Keywords :
adaptive control; control system analysis; stability; adaptive controllers; normalisations; robustness; stability analysis; unmodeled dynamics; Adaptive control; Control systems; Equations; Force control; Parameter estimation; Programmable control; Robust control; Robust stability; Transfer functions; Upper bound;
Journal_Title :
Automatic Control, IEEE Transactions on
