IMT Institutional Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T15:06:04ZEPrintshttp://eprints.imtlucca.it/images/logowhite.pnghttp://eprints.imtlucca.it/2011-07-29T10:53:06Z2012-07-09T09:32:53Zhttp://eprints.imtlucca.it/id/eprint/741This item is in the repository with the URL: http://eprints.imtlucca.it/id/eprint/7412011-07-29T10:53:06ZHybrid dynamic optimization for cruise speeed controlThe 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.Tiago JorgeJoao M. LemosMiguel BarĂ£oAlberto Bemporadalberto.bemporad@imtlucca.it