Multigrid optimization schemes that solve optimal control problems with bilinear elliptic partial differential equations are presented. For the solution of the control-unconstrained and control-constrained problems, finite difference discretization is utilized. To solve the control-unconstrained case, multigrid for optimization (MGOPT) method is considered and for the control-constrained case, MGOPT with gradient projection method is applied to solve the problem. Numerical experiments show the efficiency of these techniques. [PUBLICATION ABSTRACT]
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