Adaptive output feedback control of a class of uncertain nonlinear systems with unknown time delays

Abstract

This article studies the adaptive output feedback control problem of a class of uncertain nonlinear systems with unknown time delays. The systems considered are dominated by a triangular system without zero dynamics satisfying linear growth in the unmeasurable states. The novelty of this article is that a universal-type adaptive output feedback controller is presented to time-delay systems, which can globally regulate all the states of the uncertain systems without knowing the growth rate. An illustrative example is provided to show the applicability of the developed control strategy.

Keywords:

• nonlinear systems
• uncertain systems
• output feedback control
• time-delay

Acknowledgements

This study was supported in part by the Funds of LiaoNing Education Department Plan Projects of China (Grant No. L2010426).