Optimal control of an eddy current problem with a dipole source

Abstract

This paper is concerned with the analysis of a class of optimal control problems governed by a time-harmonic eddy current system with a dipole source, which is taken as the control variable. A mathematical model is set up for the state equation where the dipole source takes the form of a Dirac mass located in the interior of the conducting domain. A nonstandard approach featuring the fundamental solution of a curl curl −Id operator is proposed to address the well-posedness of the state problem, leading to a split structure of the state field as the sum of a singular part and a regular part. The aim of the control is the best approximation of desired electric and magnetic fields via a suitable L 2 -quadratic tracking cost functional. Here, special attention is devoted to establishing an adjoint calculus which is consistent with the form of the state variable and in this way first order optimality conditions are eventually derived.

Optimal control of parameterized stationary Maxwell's system: Reduced basis, convergence analysis, and a posteriori error estimates

“…For completeness, we mention that the optimal control problems governed by the non-parameterized Maxwell systems have attracted a great deal of attention from many scientists in the last decades. For surveys on the subject, we refer the reader to, e.g., [7,10,31,35,36,40,41,42,43,44] and the references therein. The construction of the reduced basis methods for parameterized Maxwell systems can be found in [6,11,12,20,21,22].…”