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Title: Hybrid Dynamic Optimization for Cruise Speed Control
Authors: Jorge, Tiago R.
Lemos, João M.
Barão, Miguel
Bemporad, Alberto
Keywords: Control
Hybrid Systems
Automotive Control
Issue Date: Aug-2011
Publisher: Elsevier
Citation: T. Jorge, J. Lemos, M. Barão, A. Bemporad, "Hybrid Dynamic Optimization for Cruise Speed Control", Proceedings of the 18th IFAC World Congress, Milan, 2011.
Abstract: The cruise control problem of transferring the speed of a vehicle between two values in a fixed interval of time using a predefined sequence of gears is solved in this paper. This is a hybrid dynamic optimization problem since the control variables include both a continuous variable (fuel flow) and a discrete variable (the gear to apply at each instant). The solution is given in the form of a hybrid optimal control algorithm that computes the optimal switching times between gears using Dynamic Programming and the optimal fuel profile between successive gear boundaries using a gradient algorithm to approximate the optimum conditions. In order to reduce the search of the optimal switching times to a search in a finite dimension graph, a procedure based on a changing grid is used. The algorithm is illustrated by a simulation using a diesel one-dimensional car model.
Type: article
Appears in Collections:INF - Artigos em Livros de Actas/Proceedings

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