Now showing items 21-40 of 60

  • Discrete-time integral MRAC with minimal controller synthesis and parameter projection 

    Montanaro, Umberto; Olm Miras, Josep Maria (2015-09-25)
    Article
    Open Access
    Model reference adaptive controllers with Minimal Control Synthesis are effective control algorithms to guarantee asymptotic convergence of the tracking error to zero not only for disturbance-free uncertain linear systems, ...
  • Examen final 

    Herranz Sotoca, Javier; Boza Rocho, Santiago; Olm Miras, Josep Maria; Alonso Alonso, María Teresa (Universitat Politècnica de Catalunya, 2019-01-22)
    Exam
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  • Examen final 

    Herranz Sotoca, Javier; Boza Rocho, Santiago; Olm Miras, Josep Maria; Alonso Alonso, María Teresa (Universitat Politècnica de Catalunya, 2018-06-06)
    Exam
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  • Examen MQ 

    Herranz Sotoca, Javier; Boza Rocho, Santiago; Olm Miras, Josep Maria; Alonso Alonso, María Teresa (Universitat Politècnica de Catalunya, 2018-04-06)
    Exam
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  • Examen MQ 

    Herranz Sotoca, Javier; Boza Rocho, Santiago; Olm Miras, Josep Maria; Alonso Alonso, María Teresa (Universitat Politècnica de Catalunya, 2018-10-29)
    Exam
    Restricted access to the UPC academic community
  • Existence of periodic solutions with nonconstant sign in a class of generalized abel equations 

    Olm Miras, Josep Maria; Ros Oton, Xavier (2013-04)
    Article
    Open Access
    This article provides sufficient conditions for the existence of periodic solutions with nonconstant sign in a family of polynomial, non-auto-nomous, firrst-order diferential equations that arise as a generalization of the ...
  • Experimental validation of a continuous-time MCSI algorithm with bounded adaptive gains 

    Montanaro, Umberto; Costa Castelló, Ramon; Olm Miras, Josep Maria; Larco Barros, Ciro (2019-08-01)
    Article
    Restricted access - publisher's policy
    Model reference adaptive control algorithms with minimal controller synthesis have proven to be an effective solution to tame the behaviour of linear systems subject to unknown or time-varying parameters, unmodelled dynamics ...
  • Experimental validation of the discrete-time MCS adaptive strategy 

    di Bernardo, Mario; di Gaeta, Alessandro; Montanaro, Umberto; Olm Miras, Josep Maria; Santini, S. (2013-06)
    Article
    Open Access
    This paper is concerned with the implementation and experimental validation of a discrete-time model reference adaptive control strategy, known as Minimal Control Synthesis(MCS)algorithm. After discussing the proof of ...
  • Fixed frequency sliding mode-based robust inversion with a full-bridge current DC-link buck-boost 

    Olm Miras, Josep Maria; Biel Solé, Domingo; Fossas Colet, Enric; Cardoner Parpal, Rafel (2014-01)
    Article
    Restricted access - publisher's policy
    The substitution of the original switches by a full bridge in a Non-Inverting Buck-Boost converter results in an inverter capable of carrying out step-down and step-up tasks as well under sliding mode control. The control ...
  • Galerkin method and approximate tracking in a non-minimum phase bilinear system 

    Fossas Colet, Enric; Olm Miras, Josep Maria (American Institute of Mathematical Sciences, 2007-01)
    Article
    Open Access
    The tracking control of non-minimum phase systems is nowadays an open and challenging field, because a general theory is still not available. This article proposes an indirect control strategy in which a key role is played ...
  • Harmonic balance-based control of a boost DC/AC converter 

    Olm Miras, Josep Maria; Biel Solé, Domingo; Spinetti Rivera, Mario de Jesús; Fossas Colet, Enric (2012-08)
    Article
    Open Access
    The achievement of step-up inversion with a boost DC/AC converter requires appropriate periodic references for inductor currents, which have to satisfy ordinary differential equations (ODE) of the Abel type. These are ...
  • Implementación de un controlador en modo deslizante a frecuencia de conmutación fija en un convertidor elevador 

    Repecho del Corral, Víctor; Biel Solé, Domingo; Olm Miras, Josep Maria (2017)
    Conference report
    Restricted access - publisher's policy
    En este trabajo se muestra la aplicación de una técnica para la regulación de frecuencia en controladores desli- zantes en un convertidor elevador. Dicha estrategia, la cua l había sido propuesta teóricamente para sistemas ...
  • Integral MRAC with Minimal Controller Synthesis and bounded adaptive gains: The continuous-time case 

    Montanaro, Umberto; Olm Miras, Josep Maria (2016-12-01)
    Article
    Open Access
    Model reference adaptive controllers designed via the Minimal Control Synthesis (MCS) approach are a viable solution to control plants affected by parameter uncertainty, unmodelled dynamics, and disturbances. Despite its ...
  • Iterative approximation of unstable limit cycles for a class of Abel equations 

    Fossas Colet, Enric; Olm Miras, Josep Maria; Sira-Ramírez, Hebertt (2007)
    External research report
    Open Access
    This report considers the analytical approximation of unstable limit cycles that may appear in Abel equations written in the normal form. The procedure uses an iterative approach that takes advantage of the contraction ...
  • Linear robust output regulation in a class of switched power converters 

    Olm Miras, Josep Maria; Biel Solé, Domingo (2010-07-15)
    Article
    Open Access
    This article addresses the robust output regulation problem for a class of nonlinear switched power converters after its linearization by means of a change of the control vector variable. The methodology employs a dynamic ...
  • Modelling and control for bounded synchronization in multi-terminal VSC-HVDC transmission networks 

    Dòria Cerezo, Arnau; Olm Miras, Josep Maria; di Bernardo, Mario; Nuño, Emmanuel (2016-06-01)
    Article
    Open Access
    The extension and size of the power grid is expected to increase in the near future. Managing such a system presents challenging control problems that, so far, have been approached with classical control techniques. However, ...
  • Model reference adaptive control of a full-bridge buck inverter with minimal controller synthesis 

    Salvi, Alessandro; Santini, Stefania; Biel Solé, Domingo; Olm Miras, Josep Maria; di Bernardo, Mario (2013)
    Conference report
    Restricted access - publisher's policy
    The rejection of the undesirable effects of sudden load changes undergone by power inverters requires control techniques able to recover regular operation with a low transient error, in a short number of periods and ...
  • Model reference adaptive control of discrete-time piecewise linear systems 

    di Bernardo, Mario; Montanaro, Umberto; Olm Miras, Josep Maria; Santini, Stefania (2013-06-01)
    Article
    Open Access
    This article presents a switched model reference adaptive controller for discrete-time piecewise linear systems. In the spirit of the work by Landau in the late seventies, proof of asymptotic stability of the closed-loop ...
  • Non-uniform sampling in digital repetitive control systems: An LMI stability analysis 

    Ramos Fuentes, Germán Andrés; Olm Miras, Josep Maria; Costa Castelló, Ramon (2009-03)
    External research report
    Open Access
    Digital repetitive control is a technique which allows to track periodic references and/or reject periodic disturbances. Repetitive controllers are usually designed assuming a fixed frequency for the signals to be ...
  • Odd-harmonic repetitive control of an active filter under varying network frequency: a small-gain theorem-based stability analysis 

    Olm Miras, Josep Maria; Ramos Fuentes, Germán Andrés; Costa Castelló, Ramon; Cardoner Parpal, Rafel (2010)
    Conference report
    Restricted access - author's decision
    This work deals with the design and analysis of a controller for a shunt active power filter. The design is based on combined feedforward and feedback actions, the last using repetitive control, and aims at the obtention ...