We show that the so-called low-regret (or least-regret) control by J. L. Lions [8] fits on the control of ill-posed problems. At each time, we give the characterization of the so-called no-regret control by means of singular optimality systems. For the backward heat ill-posed problem, no Slater hypothesis is assumed on the admissible set of controls . This work is two pieces, and two methods are considered : the regularization method and the null-controllability method. For the first method, a zero order corrector is used, while for the second method, the passage to the limit is easy. The results presented here generalize the works in [2,3] to the no-regret control.
@article{EP_2007_17_a5,
author = {R. Dorville and O. Nakoulima and A. Omrane},
title = {On the control of ill-posed distributed parameter systems},
journal = {ESAIM. Proceedings},
pages = {50--66},
year = {2007},
volume = {17},
doi = {10.1051/proc:071705},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:071705/}
}
TY - JOUR
AU - R. Dorville
AU - O. Nakoulima
AU - A. Omrane
TI - On the control of ill-posed distributed parameter systems
JO - ESAIM. Proceedings
PY - 2007
SP - 50
EP - 66
VL - 17
UR - http://geodesic.mathdoc.fr/articles/10.1051/proc:071705/
DO - 10.1051/proc:071705
LA - en
ID - EP_2007_17_a5
ER -
%0 Journal Article
%A R. Dorville
%A O. Nakoulima
%A A. Omrane
%T On the control of ill-posed distributed parameter systems
%J ESAIM. Proceedings
%D 2007
%P 50-66
%V 17
%U http://geodesic.mathdoc.fr/articles/10.1051/proc:071705/
%R 10.1051/proc:071705
%G en
%F EP_2007_17_a5
R. Dorville; O. Nakoulima; A. Omrane. On the control of ill-posed distributed parameter systems. ESAIM. Proceedings, Tome 17 (2007), pp. 50-66. doi: 10.1051/proc:071705