Global Stabilization of a Class of Feedforward Nonlinear Systems with Unknown Growth Rate and Input Delay by Output Feedback

Ho-Lim CHOI  Jin-Soo KIM  Jae-Seung YOUN  Kwon Soon LEE  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E92-A   No.11   pp.2932-2935
Publication Date: 2009/11/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E92.A.2932
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Systems and Control
nonlinear system,  output feedback,  unknown linear growth rate,  unknown delay,  global asymptotic stabilization,  

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We consider a problem of global asymptotic stabilization of a class of feedforward nonlinear systems that have the unknown linear growth rate and unknown input delay. The proposed output feedback controller employs a dynamic gain which is tuned adaptively by monitoring the output value. As a result, a priori knowledge on the linear growth rate and delay size are not required in controller design, which is a clear benefit over the existing results.