eprintid: 528 rev_number: 14 eprint_status: archive userid: 7 dir: disk0/00/00/05/28 datestamp: 2011-07-27 08:45:16 lastmod: 2011-08-05 13:48:46 status_changed: 2011-07-27 08:45:16 type: book_section metadata_visibility: show contact_email: alberto.bemporad@imtlucca.it item_issues_count: 0 creators_name: Lazar, Mircea creators_name: Heemels, W.P.M.H. creators_name: Weiland, Siep creators_name: Bemporad, Alberto creators_id: creators_id: creators_id: creators_id: alberto.bemporad@imtlucca.it title: On the stability of quadratic forms based model predictive control of constrained PWA systems ispublished: pub subjects: QA subjects: QA75 divisions: CSA full_text_status: none keywords: Lyapunov function; Lyapunov stability; S-procedure technique; asymptotic stability; closed-loop system; constrained PWA systems; constraint set method; discrete-time PWA systems; hybrid systems; linear matrix inequalities; mixed integer quadratic programming problem; model predictive control; online optimization problem; piecewise affine systems; piecewise polyhedral positively invariant sets; quadratic cost; quadratic forms; terminal cost method; Lyapunov methods; asymptotic stability; discrete time systems; integer programming; linear matrix inequalities; piecewise polynomial techniques; predictive control; quadratic programming abstract: In this paper we investigate the stability of discrete-time PWA systems in closed-loop with quadratic cost based Model Predictive Controllers (MPC) and we derive a priori sufficient conditions for Lyapunov asymptotic stability. We prove that Lyapunov stability can be achieved for the closed-loop system even though the considered Lyapunov function and the system dynamics may be discontinuous. The stabilization conditions are derived using a terminal cost and constraint set method. An S-procedure technique is employed to reduce conservativeness of the stabilization conditions and a linear matrix inequalities set-up is developed in order to calculate the terminal cost. A new algorithm for computing piecewise polyhedral positively invariant sets for PWA systems is also presented. In this manner, the on-line optimization problem associated with MPC leads to a mixed integer quadratic programming problem, which can be solved by standard optimization tools. date: 2005-06 publication: American Control Conference publisher: IEEE place_of_pub: 8th-10th June 2005 pagerange: 575-580 event_title: American Control Conference, 2005 event_location: 8th-10th June 2005 event_dates: Portland, OR id_number: 10.1109/ACC.2005.1470018 refereed: TRUE isbn: 0-7803-9098-9 book_title: American Control Conference official_url: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1470018&isnumber=31519 citation: Lazar, Mircea and Heemels, W.P.M.H. and Weiland, Siep and Bemporad, Alberto On the stability of quadratic forms based model predictive control of constrained PWA systems. In: American Control Conference. IEEE, 8th-10th June 2005, 575-580 . ISBN 0-7803-9098-9 (2005)