Volume 25, 2019
|Number of page(s)||21|
|Published online||18 October 2019|
Insensitizing control for linear and semi-linear heat equations with partially unknown domain*
Ceremade, Université Paris-Dauphine, CNRS UMR 7534, PSL,
2 CNRS, Université Pierre et Marie Curie (Univ. Paris 6), UMR 7598, Laboratoire Jacques-Louis Lions, 75005 Paris, France.
3 Laboratoire LAMI, Université Ouaga 1 Professeur Joseph Ki-Zerbo, 01 BP 7021 Ouaga 01, Burkina Faso.
** Corresponding author: email@example.com
Accepted: 19 May 2018
We consider a semi-linear heat equation with Dirichlet boundary conditions and globally Lipschitz nonlinearity, posed on a bounded domain of ℝN (N ∈ ℕ*), assumed to be an unknown perturbation of a reference domain. We are interested in an insensitizing control problem, which consists in finding a distributed control such that some functional of the state is insensitive at the first order to the perturbations of the domain. Our first result consists of an approximate insensitization property on the semi-linear heat equation. It rests upon a linearization procedure together with the use of an appropriate fixed point theorem. For the linear case, an appropriate duality theory is developed, so that the problem can be seen as a consequence of well-known unique continuation theorems. Our second result is specific to the linear case. We show a property of exact insensitization for some families of deformation given by one or two parameters. Due to the nonlinearity of the intrinsic control problem, no duality theory is available, so that our proof relies on a geometrical approach and direct computations.
Mathematics Subject Classification: 35K05 / 35K55 / 49K20 / 93B05
Key words: Shape deformation / insensitizing control / linear and semi-linear heat equation
© EDP Sciences, SMAI 2019
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