Now showing items 1-20 of 104

    • A black-box model for neurons 

      Roqueiro, Nestor; Claumann, Carlos; Guillamon Grabolosa, Antoni; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Open Access
      We explore the identification of neuronal voltage traces by artificial neural networks based on wavelets (Wavenet). More precisely, we apply a modification in the representation of dynamical systems by Wavenet which decreases ...
    • A feedback-based L-2-norm limiter for periodic signals 

      Griñó Cubero, Robert; Ortega, Romeo; Fossas Colet, Enric (2011-01)
      Article
      Restricted access - publisher's policy
      Limiting the rms value (L2 norm) of periodic signals can be a necessity in some controllers for power electronic devices. The prevailing existing solution is simply to compute, off-line, the L2 norm and then to multiply ...
    • A Fixed-Frequency Quasi-Sliding Control Algorithm: Application to Power Inverters Design by Means of FPGA Implementation 

      Ramos Lara, Rafael Ramón; Biel Solé, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2003-01-31)
      Article
      Open Access
      In this paper a fixed-frequency quasi-sliding control algorithm based on switching surface zero averaged dynamics (ZAD) is reported. This algorithm is applied to the design of a Buck-based inverter, and implemented in a ...
    • A new estimation of the lower error bound in balanced truncation method 

      Ha Binh, Minh; Batlle Arnau, Carles; Fossas Colet, Enric (2014-08-01)
      Article
      Open Access
      For a single-input/single-output (SISO) linear time-invariant dynamical system, the standard H-infinity-norm lower error bound of balanced truncation method is parallel to G(s) - G(r)(s)parallel to(H infinity) >= sigma(r+1), ...
    • A sliding mode control for a wound rotor synchronous generator with an isolated RL load 

      Muñoz Aguilar, Raúl Santiago; Dòria Cerezo, Arnau; Fossas Colet, Enric (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Conference lecture
      Open Access
      In this paper a sliding mode controller for the stator voltage amplitude of a stand-alone wound rotor synchronous generator is presented. The standard dq-model of the electrical machine connected to an isolated inductive ...
    • A sliding mode controlled three wheeled narrow vehicle 

      Fossas Colet, Enric; Roqueiro, Nestor; Gaudezi de Faria, Marcelo (2013)
      Article
      Restricted access - publisher's policy
      This paper presents a sliding mode controller for a narrow tilting three-wheeled vehicle. The vehicle is modelled as a dynamic eighteen-order system with two inputs and two outputs, however, a simple third-order model of ...
    • A unified approach to explain contrary effects of hysteresis and smoothing in nonsmooth systems 

      Bonet Revés, Carles; Martínez-Seara Alonso, M. Teresa; Fossas Colet, Enric; Jeffrey, Mike R. (2017-09-01)
      Article
      Open Access
      Piecewise smooth dynamical systems make use of discontinuities to model switching between regions of smooth evolution. This introduces an ambiguity in prescribing dynamics at the discontinuity: should the dynamics be given ...
    • Acte acadèmic de graduació de la facultat de Nàutica de Barcelona 2015-2016 

      Ordás Jiménez, Santiago; Fossas Colet, Enric; Cobos Delgado, Ismael; Bailón Díaz, Pedro (2016-10-14)
      Audiovisual
      Open Access
    • Acte de graduació de la Promoció 2016-2017 de la Facultat de Nàutica de Barcelona 

      Martín Mallofré, Agustí; Mata Enrich, Elvira; Fossas Colet, Enric; Mas Borrell, Xiqui (2017-11-09)
      Audiovisual
      Open Access
    • An algebraic parameter estimation approach to the adaptive observer-controller based regulation of the boost converter 

      Sira-Ramírez, Hebertt; Fossas Colet, Enric; Spinetti Rivera, Mario (Institute of Electrical and Electronics Engineers, 2007-06)
      Conference report
      Open Access
      In this article, a new approach is proposed for the problem of output voltage reference trajectory tracking in a boost converter with unknown, piecewise constant, load resistance values, under the restriction of noisy ...
    • An extension of the unity vector control method 

      Roqueiro, Nestor; Do Carmo, L. M. M.; Silveira, H. B.; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      In this work, Unity Vector Control is revisited based on the results by V. Utkin and co-workers. The approach here presented extends the one reported by V. Utkin and co-workers so that independent feedback gains may be ...
    • Analysis and control of an hybrid system: a doubly-fed induction machine and a back-to-back converter 

      Batlle Arnau, Carles; Dòria Cerezo, Arnau; Fossas Colet, Enric (Universitat Politècnica de Catalunya. Institut d'Organització i Control de Sistemes Industrials, 2005-09)
      External research report
      Open Access
      This report describes the port interconnection of two subsystems: a power elec- tronics subsystem (a back-to-back AC/AC converter (B2B), coupled to a phase of the power grid), and an electromechanical subsystem (a ...
    • Analysis of a bidirecctional coupled-inductor Cuk converter operating in sliding mode 

      Martínez Salamero, Luis; Calvente Calvo, Francisco Javier; Giral, Roberto; Poveda López, Alberto; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 1998-04-30)
      Article
      Open Access
      Analytic models for a bidirectional coupled-inductor Cuk converter operating in sliding mode are described. Using a linear combination of the converter four state variable errors as a general switching surface, the expression ...
    • Application of Sliding Mode Control to the design of a Buck-based sinusoidal Generator 

      Biel Solé, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco; Alarcón Cot, Eduardo José; Poveda López, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2001-06)
      Article
      Open Access
      This paper is devoted to the design of a sliding-mode control scheme for a buck-based inverter, with programmable amplitude, frequency, and dc offset, with no external sinusoidal reference required. A general procedure for ...
    • Application of sliding-mode control to the design of a buck-based sinusoidal generator 

      Biel Solé, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco; Alarcón Cot, Eduardo José; Poveda López, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2001-06)
      Article
      Open Access
      This paper is devoted to the design of a sliding-mode control scheme for a buck-based inverter, with programmable amplitude, frequency, and DC offset, with no external sinusoidal reference required. A general procedure for ...
    • Arxius genèrics 

      Costa Castelló, Ramon; Fossas Colet, Enric (Universitat Politècnica de Catalunya, 2014)
      Software
      Open Access
    • Averaged dynamics of a coupled-inductor boost converter under sliding mode control using a piecewise linear complementarity model 

      Carrero Candelas, Niliana Andreina; Batlle Arnau, Carles; Fossas Colet, Enric (2016-04-12)
      Article
      Open Access
      An averaged model of a coupled-inductor boost converter using the piecewise complementarity model of the converter under sliding motions is obtained. The model takes into account the idealized voltage–current characteristic ...
    • Bifurcation analysis of a Lyapunov-based controlled boost converter 

      Spinetti Rivera, Mario de Jesús; Olm Miras, Josep Maria; Biel Solé, Domingo; Fossas Colet, Enric (2013-11)
      Article
      Restricted access - publisher's policy
      Lyapunov-based controlled boost converters have a unique equilibrium point, which is globally asymptotically stable, for known resistive loads. This article investigates the dynamic behaviors that appear in the system when ...
    • Big-bang bifurcations in a first order system with a relay 

      Fossas Colet, Enric; Granados, Albert (2011)
      Conference report
      Restricted access - publisher's policy
      In this work we describe the bifurcation scenario found in a general first order system when a relay based proportional control is considered. We show the existence of a big bang bifurcation causing the existence of an ...
    • Bounding the output error in a buck power converter using perturbation theory 

      Angulo García, Fabiola; Fossas Colet, Enric; Seara, Tere M.; Olivar, Gerard (Hindawi, 2008-07)
      Article
      Open Access
      We show the main results obtained when applying the average theory to Zero Average Dynamic control technique in a buck power converter with pulse-width modulation (PWM). In particular, we have obtained the bound values for ...