DocumentCode :
852338
Title :
Stability of multiloop LQ regulators with nonlinearities--Part I: Regions of attraction
Author :
Joshi, S.M.
Author_Institution :
NASA Langley Research Center, Hampton, VA, USA
Volume :
31
Issue :
4
fYear :
1986
fDate :
4/1/1986 12:00:00 AM
Firstpage :
364
Lastpage :
367
Abstract :
The closed-loop stability of linear, time-invariant systems controlled by linear quadratic (LQ) regulators is investigated when there are nonlinearities in the control channels which lie outside the ( 
) stability sector in regions away from the origin (i.e., saturation-type nonlinearities). An estimate of the region of attraction is obtained which provides methods for selecting the performance function weights for more robust LQ designs.
) stability sector in regions away from the origin (i.e., saturation-type nonlinearities). An estimate of the region of attraction is obtained which provides methods for selecting the performance function weights for more robust LQ designs.Keywords :
Linear-quadratic control; Nonlinearities; Stability, linear systems; Aerodynamics; Automatic control; Control nonlinearities; Control systems; Entropy; Nonlinear control systems; Regulators; Robustness; Stability; Symmetric matrices;
fLanguage :
English
Journal_Title :
Automatic Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9286
Type :
jour
DOI :
10.1109/TAC.1986.1104272
Filename :
1104272
Link To Document :
