Title
Robustness of constant-delay predictor feedback for in-domain stabilization of reaction–diffusion PDEs with time- and spatially-varying input delays
Abstract
This paper discusses the in-domain feedback stabilization of reaction–diffusion PDEs with Robin boundary conditions in the presence of an uncertain time- and spatially-varying delay in the distributed actuation. The proposed control design strategy consists of a constant-delay predictor feedback designed based on the known nominal value of the control input delay and is synthesized on a finite-dimensional truncated model capturing the unstable modes of the original infinite-dimensional system. By using a small-gain argument, we show that the resulting closed-loop system is exponentially stable provided that the variations of the delay around its nominal value are small enough. The proposed proof actually applies to any distributed-parameter system associated with an unbounded operator that 1) generates a C0-semigroup on a weighted space of square integrable functions over a compact interval; and 2) is self-adjoint with compact resolvent.
Year
DOI
Venue
2021
10.1016/j.automatica.2020.109347
Automatica
Keywords
DocType
Volume
Delayed distributed actuation,Spatially-varying delay,Distributed parameter systems,Predictor feedback,Reaction–diffusion equation
Journal
123
Issue
ISSN
Citations 
1
0005-1098
1
PageRank 
References 
Authors
0.35
0
3
Name
Order
Citations
PageRank
Lhachemi, H.1228.90
Christophe Prieur21037129.96
Robert Shorten329360.79