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Abstract |
Design of an Efficient Algorithm for Fuel-optimal Look-ahead Control
A fuel-optimal control algorithm is developed for a heavy diesel
truck that utilizes information about the road topography ahead of the
vehicle when the route is known. A prediction model is formulated
where special attention is given to properly include gear shifting.
The aim is an algorithm with sufficiently low computational
complexity. To this end, a dynamic programming algorithm is tailored,
and complexity and numerical errors are analyzed. It is shown that it
is beneficial to formulate the problem in terms of kinetic energy in
order to avoid oscillating solutions and to reduce linear
interpolation errors. A residual cost is derived from engine and
driveline characteristics. The result is an on-board controller for an
optimal velocity profile and gear selection.
Erik Hellström, Jan Åslund and Lars Nielsen
Control Engineering Practice, 2010
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Senast uppdaterad: 2021-11-10
