TY  - CHAP
EP  - 5087
PB  - IFAC
SP  - 5082
A1  - Jorge, Tiago
A1  - Lemos, Joao M.
A1  - Barão, Miguel
A1  - Bemporad, Alberto
T2  - Proceedings of the 18th IFAC World Congress, 2011
AV  - none
ID  - eprints741
TI  - Hybrid dynamic optimization for cruise speeed control
UR  - http://www.ifac-papersonline.net/Detailed/49149.html
KW  - Nonlinear and optimal automotive control; Intelligent driver aids
SN  - 978-3-902661-93-7
Y1  - 2011///
M1  - 18
N1  - This work has been performed within the framework of activity 2.4.1 ? Smart drive control of project SE2A - Nanoelectronics for Safe, Fuel Efficient and Environment Friendly Automotive Solutions, ENIAC initiative.
N2  - 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.
ER  -