Reference
N. Groot, B. De Schutter, and H. Hellendoorn, "Integrated model predictive
traffic and emission control using a piecewise-affine approach,"
IEEE Transactions on Intelligent Transportation Systems, vol.
14, no. 2, pp. 587-598, June 2013.
Abstract
This paper addresses the computational intractability of traffic control when
applying the integrated METANET freeway traffic model and the VT-macro emission
model in a model-based predictive control (MPC) framework. In order to
facilitate real-time implementation, a piecewise-affine (PWA) approximation of
the nonlinear METANET model is proposed. While a direct MPC approach based on
the full PWA model is intractable for on-line applications, a conversion to a
mixed-logical dynamic (MLD) model description is made instead. The resulting
MLD-MPC problem, written as a mixed-integer linear program, can be solved much
more efficiently as it does not explicitly state all model equations for each
particular region. As a benchmark, the computational efficiency and accuracy of
the MLD-MPC approach is tested on a case study including variable speed limits
and a metered on-ramp while optimizing the total time spent, as well as taking
into account emissions and fuel consumption of the vehicles. The performance is
evaluated against the original nonlinear and nonconvex MPC problem and shows an
improved computational speed at the cost of some deviation in the cost function
values.
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BibTeX
@article{GroDeS:13-003,
author = {Groot, Noortje and De Schutter, Bart and Hellendoorn, Hans},
title = {Integrated Model Predictive Traffic and Emission Control Using a
Piecewise-Affine Approach},
journal = {IEEE Transactions on Intelligent Transportation Systems},
volume = {14},
number = {2},
pages = {587--598},
month = jun,
year = {2013}
}