relation: http://eprints.imtlucca.it/475/
title: Event-driven optimization-based control of hybrid systems with integral continuous-time dynamics
creator: Di Cairano, Stefano
creator: Bemporad, Alberto
creator: Júlvez, Jorge
subject: QA75 Electronic computers. Computer science
subject: TA Engineering (General). Civil engineering (General)
description: In this paper we introduce a class of continuous-time hybrid dynamical systems called integral continuous-time hybrid automata (icHA) for which we propose an event-driven optimization-based control strategy. Events include both external actions applied to the system and changes of continuous dynamics (mode switches). The icHA formalism subsumes a number of hybrid dynamical systems with practical interest, e.g., linear hybrid automata. Different cost functions, including minimum-time and minimum-effort criteria, and constraints are examined in the event-driven optimal control formulation. This is translated into a finite-dimensional mixed-integer optimization problem, in which the event instants and the corresponding values of the control input are the optimization variables. As a consequence, the proposed approach has the advantage of automatically adjusting the attention of the controller to the frequency of event occurrence in the hybrid process. A receding horizon control scheme exploiting the event-based optimal control formulation is proposed as a feedback control strategy and proved to ensure either finite-time or asymptotic convergence of the closed-loop.
publisher: Elsevier Science Limited
date: 2009
type: Article
type: PeerReviewed
identifier:   Di Cairano, Stefano and Bemporad, Alberto and Júlvez, Jorge  Event-driven optimization-based control of hybrid systems with integral continuous-time dynamics.  Automatica, 45 (5).  pp. 1243-1251.       (2009)  
relation: http://www.sciencedirect.com/science/article/pii/S0005109809000247
relation: 10.1016/j.automatica.2008.12.011