Global robust output regulation of output feedback systems with unknown high-frequency gain sign

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

67 Scopus Citations
View graph of relations



Original languageEnglish
Pages (from-to)625-631
Journal / PublicationIEEE Transactions on Automatic Control
Issue number4
Online published10 Apr 2006
Publication statusPublished - Apr 2006
Externally publishedYes


The global robust output regulation problem for nonlinear systems in output feedback form has been solved under a key assumption that the high-frequency gain sign is known. This note shows that this assumption can be removed by incorporating the Nussbaum gain technique into the existing framework for handling the robust output regulation problem. © 2006 IEEE.

Research Area(s)

  • Adaptive control, Nonlinear systems, Output regulation