By Topic

Robust near-optimal output feedback control of nonlinear systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
El-Farra, N.H. ; Dept. of Chem. Eng., California Univ., Los Angeles, CA, USA ; Christofides, P.D.

This work proposes a robust near-optimal nonlinear output feedback controller design for a broad class of nonlinear systems with time-varying uncertain variables. Through combination of a high-gain observer with a robust optimal state feedback controller, a dynamic robust output feedback controller is constructed that enforces exponential stability and robust asymptotic output tracking with arbitrary degree of attenuation of the effect of uncertainty on the output of the closed-loop system, for initial conditions and uncertainty in arbitrarily large compact sets, provided that the observer gain is sufficiently large. Utilizing the inverse optimal control approach and singular perturbation techniques, the controller is shown to be near-optimal in the sense that its performance can be made arbitrarily close to the optimal performance of the robust optimal state feedback controller on the infinite time-interval by selecting the observer gain to be sufficiently large

Published in:

American Control Conference, 2000. Proceedings of the 2000  (Volume:6 )

Date of Conference: