Ara es mostren els items 424-443 de 454

    • Tachyons in the Galilean limit 

      Batlle Arnau, Carles; Gomis Torné, Joaquin; Mezincescu, Luca; Townsend, Paul K. (2017-04-20)
      Article
      Accés obert
      The Souriau massless Galilean particle of “colour” k and spin s is shown to be the Galilean limit of the Souriau tachyon of mass m = ik and spin s. We compare and contrast this result with the Galilean limit of the Nambu-Goto ...
    • Teaching model-based fault detection and isolation using project-based learning on a three-tank system 

      Costa Castelló, Ramon; Puig Cayuela, Vicenç; Blesa Izquierdo, Joaquim (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Model-based fault detection and isolation is nowadays a well established and mature eld. It starts to become part of the curricula of graduate or post-graduate students. However, the lack of good teaching materials makes ...
    • Teaching, Analyzing, Designing and Interactively Simulating of Sliding Mode Control 

      Costa Castelló, Ramon; Carrero Candelas, Niliana Andreina; Dormido Bencomo, Sebastián; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2018-03-10)
      Article
      Accés obert
      This paper introduces an interactive methodology to analize, design, and simulate sliding model controllers for R2 linear systems. This paper reviews sliding mode basic concepts and design methodologies and describes an ...
    • Teixeira singularities in 3D switched feedback control systems 

      Colombo, A.; Di Bernardo, Mario; Fossas Colet, Enric; Jeffrey, M.R. (2010-10)
      Article
      Accés restringit per política de l'editorial
      This paper is concerned with the analysis of a singularity that can occur in three-dimensional discontinuous feedback control systems. The singularity is the two-fold — a tangency of orbits to both sides of a switching ...
    • Test de interrupción de la humidificación para la diagnosis en pilas PEM 

      Primucci, Mauricio Ariel; Serra, Maria; Riera, Jordi (Riera Colomer) (APPICE, 2008)
      Text en actes de congrés
      Accés obert
      One of the most demanding research topics related to the Polymer Electrolyte Membrane Fuel Cell concerns its reliability. Apart from the security aspects, it is basic to have a diagnosis of the internal state of the fuel ...
    • Test de interrupción de la humidificación para la diagnosis en pilas PEM 

      Primucci, Mauricio Ariel; Serra, Maria; Riera, Jordi (Riera Colomer) (2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Uno de los principales temas de investigación relacionados con las pilas de combustible del tipo de membrana de electrolito polimérico es su fiabilidad. Además de los aspectos de seguridad, es básico hacer una diagnosis ...
    • Técnica ZAD aplicada a un convertidor "buck": análisis de estabilidad y de transición al caos 

      Angulo García, Fabiola; Fossas Colet, Enric; Olivar, Gerard (Comité Español de Automática, 2005-10)
      Article
      Accés obert
      En este trabajo se presentan algunos resultados obtenidos al analizar el convertidor buck controlado mediante un modulador de anchura de pulsos (PWM) centrado. El ciclo de trabajo se calcula obligando a que una salida, ...
    • Técnicas de control avanzadas para la mejora de la operación de convertidores VSI conectados a la red eléctrica 

      Orellana Barceló, Marcos; Griñó Cubero, Robert (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      El objetivo principal de esta tesis doctoral es el desarrollo de una metodología para la concepción de controladores de tiempo discreto especialmente diseñ~ados para mejorar la operación de convertidores VSI conectados a ...
    • The ideal sliding dynamics of a stand alone synchronous generator 

      Dòria Cerezo, Arnau; Fossas Colet, Enric; Muñoz Aguilar, Raúl Santiago (2011)
      Text en actes de congrés
      Accés obert
      The closes loop dynamics of a sliding-mode controlled stand alone synchronous generator with a resistive load is stuided in this paper. The resulting dynamics is piecewise continous, robust in front of parameter and load ...
    • Theory and experimental results of two dynamic energy routers 

      Ramirez, Victor; Ortega, Romeo; Griñó Cubero, Robert; Sánchez-Squella, Antonio; Bethoux, Olivier (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Efficient regulation of the energy transfer between generating, storage and load subsystems is a topic of current practical interest. A new strategy to achieve this objective, together with its corresponding power ...
    • Thermal modelling approach and model predictive control of a water-cooled PEM fuel cell system 

      Rojas Fernández, José David; Ocampo-Martínez, Carlos; Kunusch, Cristian (2013)
      Text en actes de congrés
      Accés obert
      In this paper, a modular thermal modelling approach for a water-cooled Proton Exchange Membrane fuel cell (PEM-FC) stack is proposed. The resultant model is based on the heat flux inside the stack and has been validated ...
    • Three-phase phase-locked loop algorithms based on sliding modes 

      Dòria Cerezo, Arnau; Repecho del Corral, Víctor; Biel Solé, Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
      Article
      Accés obert
      This article proposes a family of phase-locked loop schemes based on sliding modes. The use of sliding mode algorithms ensures fast response and global stability. In particular, two new algorithms are presented, both based ...
    • Topological analysis of powertrains for refusecollecting vehicles based on real routes – Part I: Hybrid hydraulic powertrain 

      Soriano Alfonso, Franciso; Moreno Eguilaz, Juan Manuel; Álvarez Flórez, Jesús Andrés; Riera, Jordi (Riera Colomer) (2016-10-03)
      Article
      Accés obert
      In this two-part paper, a topological analysis of powertrains for refuse-collecting vehicles (RCVs) based on the simulation of different architectures (internal combustion engine, hybrid electric, and hybrid hydraulic) on ...
    • Topological analysis of powertrains for refusecollecting vehicles based on real routes – Part II: Hybrid electric powertrain 

      Soriano Alfonso, Franciso; Moreno Eguilaz, Juan Manuel; Álvarez Flórez, Jesús Andrés; Riera, Jordi (Riera Colomer) (2016-10-03)
      Article
      Accés obert
      In this two-part paper, a topological analysis of powertrains for refuse-collecting vehicles (RCVs) based on simulation of different architectures (internal combustion engine, hybrid electric, and hybrid hydraulic) on real ...
    • Torque ripple minimization for a Switched Reluctance Motor 

      Blanqué Molina, Balduino; Dòria Cerezo, Arnau (2009-09-01)
      Text en actes de congrés
      Accés obert
      This paper presents the desired current references in order to minimize the torque ripple for a Switched Reluctance Motor. From the torque equation, and using switch on and switch off angles, the desired current waveforms ...
    • Traffic flow-oriented design and analysis of an adaptive cruise control system 

      Benedito Benet, Ernest; Dòria Cerezo, Arnau; Kunusch, Cristian; Olm Miras, Josep Maria (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper we present a state feedback-based adaptive cruise control strategy for an autonomous vehicle able to operate in an effective and safe manner between speed regulation and position control, depending on the ...
    • Transient analysis of RF cavities under beam loading 

      Hassanzadegan, Hooman; Griñó Cubero, Robert; Einfeld, Dieter (2009-05-08)
      Comunicació de congrés
      Accés obert
      The conventional electrical model analogy of a RF cavity is a shunt RLC circuit supplied by two current sources representing the RF amplifier and the beam. In the literature, the impedance of the cavity is often calculated ...
    • Transition from periodicity to chaos in a PWM-controlled buck converter with ZAD strategy 

      Angulo García, Fabiola; Fossas Colet, Enric; Olivar, Gerard (World Scientific Publishing, 2005-10-31)
      Article
      Accés obert
      The transition from periodicity to chaos in a DC-DC Buck power converter is studied in this paper. The converter is controlled through a direct Pulse Width Modulation (PWM) in order to regulate the error dynamics at zero. ...
    • Two different control strategies for the multi-step forward-dynamic simulation of running gait 

      Pàmies Vilà, Rosa; Dòria Cerezo, Arnau; Font Llagunes, Josep Maria (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • Two Families of Sliding Mode Controllers for a Doubly-Fed Induction Generator in a Isolated Generation System 

      Galindo Orozco, René; Cotoregea Pfeifer, María; Biel Solé, Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2007-05)
      Article
      Accés obert
      En este artículo se considera el control en modo de deslizamiento (SMC1) de un generador de inducción doblemente alimentado (DFIG) que suministra a una carga RL aislada, en un sistema de generación de velocidadvariable/f ...