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Temporal Lagrangian decomposition of Model Predictive Control for hybrid systems
(2004)2004 43rd IEEE Conference on Decision and Control (CDC)Given a model predictive control (MPC) problem for a hybrid system in the mixed logical dynamical (MLD) framework, a temporal decomposition scheme is proposed that efficiently derives the control actions by performing Lagrangian decomposition on the prediction horizon. The algorithm translates the original optimal control problem into a temporal sequence of independent subproblems of smaller dimension. The solution of the Lagrangian problem ...Conference Paper -
Stability analysis of hybrid systems with a linear performance index
(2004)2004 43rd IEEE Conference on Decision and Control (CDC)We consider the constrained finite time optimal control (CFTOC) problem for the class of discrete-time linear hybrid systems. For a linear performance index the solution to the CFTOC problem is a time-varying piecewise affine function of the state. However, when a receding horizon control strategy is used stability and/or feasibility of the closed-loop system is not guaranteed. In this paper we present an algorithm that by analyzing the ...Conference Paper -
A multiscale approximation scheme for explicit model predictive control with stability, feasibility, and performance guarantees
(2009)Proceedings of the 48th IEEE Conference on Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009Conference Paper -
System Identification with Missing Data Via Nuclear Norm Regularization
(2009)ECC' 09 : European Control Conference, August 23 - 26, 2009, Budapest, Hungary : conference proceedingsConference Paper -
Autonomous Vehicle Steering Using Explicit LPV-MPC
(2009)ECC' 09 : European Control Conference, August 23 - 26, 2009, Budapest, Hungary : conference proceedingsConference Paper -
Explicit model predictive control of the boost DC-DC converter
(2006)IPV-IFAC Proceedings Volume ~ Analysis and Design of Hybrid Systems 2006dc converter boost circuit topology. The same control problem formulation is maintained but a simpler piecewise affine approximation of the system dynamics is derived and employed to obtain an explicit solution whose complexity renders it viable for implementation on a realistic circuit setup. Copyright© 2006 IFAC.Conference Paper -
Application of model predictive control to a cascade of river power plants
(2008)IFAC Proceedings Volumes ~ Proceedings of the 17th IFAC World CongressRiver power plants are important contributors to the over 19% of world electricity produced by hydro-electric plants. Built in the natural course of a river, they produce energy by manipulating the water discharge through their facilities. They therefore introduce fluctuations in the river's natural water level and flow, which might conflict with various constraints imposed for environmental and operational purposes. Motivated by these ...Conference Paper -
Online-tuned multi-mode resonant piezoelectric shunt for broadband vibration suppression
(2004)IFAC Proceedings Volumes ~ Mechatronic Systems 2004: A Proceedings Volume from the 3rd IFAC Symposium on Mechatronic SystemsBroadband structural vibration can be suppressed through the connection of an electrical impedance to the terminals of a bonded piezoelectric transducer. This is referred to as piezoelectric shunt damping. Good nominal damping performance has been obtained with resonant shunts, but these shunts are highly sensitive to variations in structural resonance frequencies. In this paper, we present an online tuned multi-mode resonant shunt ...Conference Paper -
Optimizing control of variable cycle time simulated moving beds
(2007)IFAC Proceedings Volumes ~ 8th International IFAC Symposium on Dynamics and Control of Process Systems. ProceedingsSimulated moving bed (SMB) is a cost-efficient chromatographic technique employed for difficult separation tasks. SMB processes exhibit complex dynamics, e.g., its hybrid nature due to the inlet/outlet port switches with nonlinearities and delays. The novel feature presented in this work is the extension of the ‘cycle to cycle’ control concept to make use as manipulated variables, of the four sectional flow rates and the switch time. Its ...Conference Paper -
Optimizing control of hot blast stoves in staggered parallel operation
(2008)IFAC Proceedings Volumes ~ Proceedings of the 17th IFAC World CongressAn optimizing control scheme is designed for the minimization of the energy consumption in the hot blast stoves. By an appropriate selection of the control structure, the problem of energy minimization at steady-state in the presence of constraints is formulated as a constrained optimal control problem. A model predictive control (MPC) scheme is designed based on a simple linear control model, which is obtained from step response experiments ...Conference Paper