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A Posteriori Error Estimates for an Optimal Control Problem with a Bilinear State Equation

Author

Listed:
  • Francisco Fuica

    (Universidad Técnica Federico Santa María)

  • Enrique Otárola

    (Universidad Técnica Federico Santa María)

Abstract

We propose and analyze a posteriori error estimators for an optimal control problem that involves an elliptic partial differential equation as state equation and a control variable that enters the state equation as a coefficient; pointwise constraints on the control variable are considered as well. We consider two different strategies to approximate optimal variables: a fully discrete scheme in which the admissible control set is discretized with piecewise constant functions and a semi-discrete scheme where the admissible control set is not discretized; the latter scheme being based on the so-called variational discretization approach. We design, for each solution technique, an a posteriori error estimator and show, in two- and three-dimensional Lipschitz polygonal/polyhedral domains (not necessarily convex), that the proposed error estimator is reliable and efficient. We design, based on the devised estimators, adaptive strategies that deliver optimal experimental rates of convergence for the performed numerical examples.

Suggested Citation

  • Francisco Fuica & Enrique Otárola, 2022. "A Posteriori Error Estimates for an Optimal Control Problem with a Bilinear State Equation," Journal of Optimization Theory and Applications, Springer, vol. 194(2), pages 543-569, August.
    • Handle: RePEc:spr:joptap:v:194:y:2022:i:2:d:10.1007_s10957-022-02039-6
    DOI: 10.1007/s10957-022-02039-6
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    References listed on IDEAS

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    1. Olaf Benedix & Boris Vexler, 2009. "A posteriori error estimation and adaptivity for elliptic optimal control problems with state constraints," Computational Optimization and Applications, Springer, vol. 44(1), pages 3-25, October.
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