Bilinear optimal control of a reaction-diffusion equation: overcoming boundedness constraints on controls

Iranian Journal of Numerical Analysis and Optimization

مقاله 6، دوره 15، Issue 2 - شماره پیاپی 33، شهریور 2025، صفحه 570-599   

نوع مقاله: Research Article

شناسه دیجیتال (DOI): 10.22067/ijnao.2025.90287.1538

نویسندگان

R. El Mezegueldy^* ؛ Y. Ouakrim؛ M. Ouzahra

Laboratory MMPA, Department of Mathematics and Informatics, ENS, University of Sidi Mohamed Ben Abdellah, Fez, Morocco.

چکیده

We study an optimal control problem for bilinear reaction-diffusion equa-tions. The novelty of our approach lies in considering controls from the space of essentially bounded functions without imposing a priori bounds on the admissible set. We introduce an auxiliary problem with controls in Lp spaces $(p > 1 + N /2, where N $ is the spatial dimension) and demon-strate that both formulations are equivalent in terms of optimal solutions. Under suitable assumptions on the system parameters, we establish the ex-istence of optimal controls and derive first-order optimality conditions. Our theoretical findings are supported by numerical simulations that validate the practical effectiveness of the proposed approach. This work provides a new framework for handling bilinear control problems without artificial constraints, offering potential applications in population dynamics and eco-logical management.

کلیدواژه‌ها

Bilinear optimal control؛ Reaction-diffusion equations؛ Essen-tially bounded controls؛ Optimality conditions

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