Title
A general approach to precise tracking of nonlinear systems subject to non-vanishing uncertainties
Abstract
In this work we introduce a new and systematic methodology for precise tracking control of normal-form nonlinear systems subject to non-vanishing/non-parametric uncertainties. We propose a general solution to achieving robust tracking with a rate of convergence that can be pre-assigned as fast as desired (e.g. super exponential or even closer to a pre-specified finite time). The key design tool is the utilization of a time-varying feedback gain through a time-varying scaling function that satisfies certain conditions. Our method also features with complete rejection (rather than partial attenuation) of uncertainties/disturbances and regulation of the tracking error to zero. A generic and analytical procedure to construct the time-varying rate function is provided, extending and generalizing the existing results in the literature.
Year
DOI
Venue
2019
10.1016/j.automatica.2019.05.008
Automatica
Keywords
Field
DocType
Nonlinear systems,Time-varying feedback,Pre-specified convergence rate,Super-exponentials
Nonlinear system,Exponential function,Control theory,Generalization,Design tool,Rate of convergence,Scaling,Rate function,Mathematics,Tracking error
Journal
Volume
Issue
ISSN
106
1
0005-1098
Citations 
PageRank 
References 
1
0.35
0
Authors
2
Name
Order
Citations
PageRank
Yujuan Wang124611.57
Yong-Duan Song21949108.61