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In this note, robust stabilization and tracking performance of operator based nonlinear feedback control systems are studied by using robust right coprime factorization. Specifically, a new condition of robust right coprime factorization of nonlinear systems with unknown bounded perturbations is derived. Using the new condition, a broader class of nonlinear plants can be controlled robustly. When the spaces of the nonlinear plant output and the reference input are different, a space change filter is designed, and in this case this note considers tracking controller design using the exponential iteration theorem.
Nonlinear feedback control
robust right coprime factorization
Digital Object Identifier: 10.1109/TAC.2006.872758
Published with permission from the copyright holder. This is the institute's copy, as published in Automatic Control, IEEE Transactions on, April 2006, Volume 51, Issue 4, Pages 645-648.
Copyright © 2006 IEEE. All rights reserved.
IEEE Transactions on Automatic Control
IEEE Control Systems Society