DocumentCode :
852346
Title :
Stability of multiloop LQ regulators with nonlinearities--Part II: Regions of ultimate boundedness
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 :
367
Lastpage :
370
Abstract :
This note investigates the closed-loop stability of linear time-invariant systems controlled by linear quadratic (LQ) regulators when there are nonlinearities in the loops which escape the ( 
) stability sector in a bounded region containing the origin. An estimate of the region of ultimate boundedness is obtained, which provides methods for selecting the performance function weights to get better regulator designs.
) stability sector in a bounded region containing the origin. An estimate of the region of ultimate boundedness is obtained, which provides methods for selecting the performance function weights to get better regulator designs.Keywords :
Nonlinearities; Stability, linear systems; Actuators; Control nonlinearities; Control systems; Hysteresis; Linear systems; Optimal control; Regulators; Riccati equations; Stability; Symmetric matrices;
fLanguage :
English
Journal_Title :
Automatic Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9286
Type :
jour
DOI :
10.1109/TAC.1986.1104273
Filename :
1104273
Link To Document :
