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Robustness of constant-delay predictor feedback for in-domain stabilization of reaction-diffusion PDEs with time- and spatially-varying input delays
- Source :
- Automatica, 2021, vol. 123, p. 109347
- Publication Year :
- 2020
-
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 $C_0$-semigroup on a weighted space of square integrable functions over a compact interval; and 2) is self-adjoint with compact resolvent.<br />Comment: Accepted for publication in Automatica as a brief paper
Details
- Database :
- arXiv
- Journal :
- Automatica, 2021, vol. 123, p. 109347
- Publication Type :
- Report
- Accession number :
- edsarx.2002.09200
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.automatica.2020.109347