Relaxation approximation of optimal control problems and applications to traffic flow models

Giacomo Albi, Michael Herty, Lorenzo Pareschi
(10/3/2018, AIP Conference Proceedings 1975, 020001 (2018))

In this paper we are interested in the numerical solution of optimal control problems for non-linear hyperbolic conservation laws. To this aim, we consider relaxation approximations to the conservation laws coupled with the optimal control problem.
Following a semi–Lagrangian interpretation of the hyperbolic relaxation system, and its adjoint counterpart, we solve efficiently the time discretization introducing a multi–step scheme in the class of BDF methods. Computational results illustrating the theoretical findings with applications to traffic flow models are presented.