Optimal control of convective FitzHugh-Nagumo equation

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Uzunca M., Kucukseyhan T., YÜCEL H., KARASÖZEN B.

COMPUTERS & MATHEMATICS WITH APPLICATIONS, cilt.73, sa.9, ss.2151-2169, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 9
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.camwa.2017.02.028
  • Dergi Adı: COMPUTERS & MATHEMATICS WITH APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2151-2169
  • Anahtar Kelimeler: FitzHugh-Nagumo equation, Traveling waves, Sparse controls, Second order optimality conditions, Discontinuous Galerkin method, DISCONTINUOUS GALERKIN METHODS, OPTIMAL BOUNDARY CONTROL, SPARSE OPTIMAL-CONTROL, DIFFUSION EQUATIONS, ERROR ANALYSIS, CONTROL CONSTRAINTS, BLOOD-COAGULATION, ELLIPTIC PROBLEMS, SIPG METHOD, MODEL
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We investigate smooth and sparse optimal control problems for convective FitzHugh Nagumo equation with traveling wave solutions in moving excitable media. The cost function includes distributed space time and terminal observations or targets. The state and adjoint equations are discretized in space by symmetric interior point Galerkin (SIPG) method and by backward Euler method in time. Several numerical results are presented for the control of the traveling waves. We also show numerically the validity of the second order optimality conditions for the local solutions of the sparse optimal control problem for vanishing Tikhonov regularization parameter. Further, we estimate the distance between the discrete control and associated local optima numerically by the help of the perturbation method and the smallest eigenvalue of the reduced Hessian. (C) 2017 Elsevier Ltd. All rights reserved.