ON VECTOR-VALUED APPROXIMATION OF STATE CONSTRAINED OPTIMAL CONTROL PROBLEMS FOR NONLINEAR HYPERBOLIC CONSERVATION LAWS

摘要

We study one class of nonlinear fluid dynamic models with controls in the initial condition and the source term. The model is described by a nonlinear inhomogeneous hyperbolic conservation law with state and control constraints. We consider the case when the greatest lower bound of the cost functional can be unattainable on the set Ξ of admissible pairs or the set Ξ is possibly empty. Using the methods of vector-valued optimization theory, we show that this optimal control problem admits the existence of the so-called weakened approximate solution which can be interpreted as generalized solution to some vector optimization problem of special form.