DocumentCode
2390230
Title
Bounded linear stability margin analysis of nonlinear hybrid adaptive control
Author
Nguyen, Nhan T. ; Boskovic, Jovan D.
Author_Institution
Intell. Syst. Div., NASA Ames Res. Center, Moffett Field, CA
fYear
2008
fDate
11-13 June 2008
Firstpage
3638
Lastpage
3643
Abstract
This paper presents a bounded linear stability analysis for a hybrid adaptive control that blends both direct and indirect adaptive control. Stability and convergence of nonlinear adaptive control are analyzed using an approximate linear equivalent system. A stability margin analysis shows that a large adaptive gain can lead to a reduced phase margin. This method can enable metrics-driven adaptive control whereby the adaptive gain is adjusted to meet stability margin requirements.
Keywords
adaptive control; approximation theory; convergence; linear systems; nonlinear control systems; stability; approximate linear equivalent system; bounded linear stability margin analysis; convergence analysis; nonlinear hybrid adaptive control; reduced phase margin; Adaptive control; Control system analysis; Control systems; Error correction; Linear approximation; Programmable control; Robust control; Robust stability; Stability analysis; Uncertainty;
fLanguage
English
Publisher
ieee
Conference_Titel
American Control Conference, 2008
Conference_Location
Seattle, WA
ISSN
0743-1619
Print_ISBN
978-1-4244-2078-0
Electronic_ISBN
0743-1619
Type
conf
DOI
10.1109/ACC.2008.4587058
Filename
4587058
Link To Document