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
Abstract :
Some results on the robustness to unmodeled dynamics of adaptive controllers using normalization factors are analyzed. It is shown that the proofs in several recently published papers fail to establish that the proposed adaptive controllers provide a nonvanishing robustness margin for the considered class of unmodeled dynamics
Keywords :
adaptive control; control system analysis; stability; adaptive controllers; normalizations; robust stability analysis; robustness; unmodeled dynamics; Adaptive control; Control systems; Equations; Frequency; Parameter estimation; Programmable control; Robust control; Robust stability; Transfer functions; Upper bound;
Conference_Titel :
Decision and Control, 1988., Proceedings of the 27th IEEE Conference on
Conference_Location :
Austin, TX
DOI :
10.1109/CDC.1988.194315
