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Necessary and sufficient optimality conditionsfor elliptic control problemswith finitely many pointwise state constraints

Published online by Cambridge University Press:  21 December 2007

Eduardo Casas
Eduardo Casas*
Affiliation:
Dpt. Matemática Aplicada y Ciencias de la Computación, E.T.S.I.I y T., Universidad de Cantabria, Av. Los Castros s/n 39005 Santander, Spain; [email protected]
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Abstract

The goal of this paper is to prove the first and second orderoptimality conditions for some control problems governed bysemilinear elliptic equations with pointwise control constraintsand finitely many equality and inequality pointwise stateconstraints. To carry out the analysis we formulate a regularityassumption which is equivalent to the first order optimalityconditions. Though the presence of pointwise state constraintsleads to a discontinuous adjoint state, we prove that the optimalcontrol is Lipschitz in the whole domain. Necessary and sufficientsecond order conditions are proved with a minimal gap betweenthem.

Keywords

Elliptic control problemspointwise state constraintsPontryagin's principlesecond order optimality conditions
Type
Research Article
Information
ESAIM: Control, Optimisation and Calculus of Variations , Volume 14 , Issue 3 , July 2008 , pp. 575 - 589
Copyright
© EDP Sciences, SMAI, 2007

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