eprintid: 741
rev_number: 17
eprint_status: archive
userid: 7
dir: disk0/00/00/07/41
datestamp: 2011-07-29 10:53:06
lastmod: 2012-07-09 09:32:53
status_changed: 2012-07-09 09:32:53
type: book_section
metadata_visibility: show
item_issues_count: 0
creators_name: Jorge, Tiago
creators_name: Lemos, Joao M.
creators_name: Barão, Miguel
creators_name: Bemporad, Alberto
creators_id: 
creators_id: 
creators_id: 
creators_id: alberto.bemporad@imtlucca.it
title: Hybrid dynamic optimization for cruise speeed control
ispublished: pub
subjects: TJ
subjects: TL
divisions: CSA
full_text_status: none
pres_type: paper
keywords: Nonlinear and optimal automotive control; Intelligent driver aids
note: 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.
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.
date: 2011
date_type: published
volume: 18
publisher: IFAC
pagerange: 5082-5087
event_title: 18th IFAC World Congress
event_location: Milano, Italy
event_dates: August 28 - September 2, 2011
event_type: conference
id_number: 10.3182/20110828-6-IT-1002.01146
refereed: TRUE
isbn: 978-3-902661-93-7
book_title: Proceedings of the 18th IFAC World Congress, 2011
official_url: http://www.ifac-papersonline.net/Detailed/49149.html
related_url_type: org
citation:   Jorge, Tiago and Lemos, Joao M. and Barão, Miguel and Bemporad, Alberto  Hybrid dynamic optimization for cruise speeed control.   In:  Proceedings of the 18th IFAC World Congress, 2011.   IFAC, pp. 5082-5087.  ISBN 978-3-902661-93-7      (2011)