Ara es mostren els items 1-20 de 49

    • A characterization of hysteresis systems 

      Ikhouane, Fayçal (2012)
      Comunicació de congrés
      Accés restringit per decisió de l'autor
      Hysteresis is a nonlinear phenomenon exhibited by systems stemming from various science and engineering areas. To detect experimentally the presence of hysteresis in a system, the graph output versus input of the system ...
    • A data-driven hysteresis model 

      Ikhouane, Fayçal (Wiley, 2022-09-12)
      Article
      Accés obert
      Hysteresis is a special type of behavior encountered in various fields of science and engineering. In civil engineering and smart structures, the Bouc–Wen model has been used extensively to represent materials with hysteresis. ...
    • A Hysteresis dynamic mathematical model approach to parametric estimation system 

      Ponce de León Puig, Nubia Ilia; Acho Zuppa, Leonardo; Rodellar Benedé, José (Hindawi, 2021-02-14)
      Article
      Accés obert
      The main contribution of this paper is the proposal of a recent hysteresis dynamic model which is successfully employed within a posited signal modulator. The modulation of signals is a commonly required stage in many ...
    • A survey of the hysteretic Duhem model 

      Ikhouane, Fayçal (2018-11-01)
      Article
      Accés obert
      The Duhem model is a simulacrum of a com- plex and hazy reality: hysteresis. Introduced by Pierre Duhem to provide a mathematical representation of thermodynamical irreversibility, it is used to ...
    • 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
      Accés obert
      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 ...
    • A velocity based active vibration control of hysteretic systems 

      Pozo Montero, Francesc; Pujol Vázquez, Gisela; Acho Zuppa, Leonardo; Rodriguez Tsouroukdissian, Arturo; Vidal Seguí, Yolanda (2011)
      Text en actes de congrés
      Accés obert
    • A velocity based active vibration control of hysteretic systems 

      Pujol Vázquez, Gisela; Acho Zuppa, Leonardo; Pozo Montero, Francesc; Rodriguez, Arturo; Vidal Seguí, Yolanda (2011-01)
      Article
      Accés obert
      Hysteresis is a property of systems that do not instantly follow the forces applied to them, but react slowly, or do not return completely to their original state. A velocity based active vibration control, along with a ...
    • Anàlisi de la influència de les condicions operatives del pneumàtic a la resistència al rodolament 

      Marcet Fortuny, Pol (Universitat Politècnica de Catalunya, 2010-10)
      Projecte/Treball Final de Carrera
      Accés obert
      Avui en dia, una de les primeres vies d‟investigació per al desenvolupament sostenible dins el sector de l'automoció és la reducció del consum energètic del vehicle, sent la reducció de la resistència al rodolament un ...
    • Causal canonical decomposition of hysteresis systems 

      Ikhouane, Fayçal (2020-10-01)
      Article
      Accés obert
      Hysteresis is a special type of behavior found in many areas including magnetism, mechanics, bi-ology, economics, etc. One of the characteristics of hysteresis systems is that they are approximatelyrate independent for ...
    • Delayed recovery of the tropical rain belt 

      Moreno Chamarro, Eduardo (Springer, 2022-01)
      Article
      Accés obert
      The climate system might respond in different ways to reducing atmospheric CO2 concentrations. Work now shows a delayed recovery (hysteresis) of the tropical rainbelt with widespread implications for water resources.
    • Design and experimental implementation of a hysteresis algorithm to optimize the maximum power point extracted from a photovoltaic system 

      Ponce de León Puig, Nubia Ilia; Acho Zuppa, Leonardo; Rodellar Benedé, José (2018-07-17)
      Article
      Accés obert
      In the several last years, numerous Maximum Power Point Tracking (MPPT) methods for photovoltaic (PV) systems have been proposed. An MPPT strategy is necessary to ensure the maximum power efficiency provided to the load ...
    • Design of a multi-phase hysteretic regulator for low voltage applications 

      Cruz Vaquer, Juan (Centre de Publicacions del Campus Nord SCCL (CPET), 2009)
      Text en actes de congrés
      Accés obert
    • Diseño y simulación de un regulador de histéresis con frequencia de conmutación fija 

      Lozano Nieto, Jose Manuel (Universitat Politècnica de Catalunya, 2007-06-30)
      Projecte/Treball Final de Carrera
      Accés obert
      Los requisitos para la alimentación de los microprocesadores de última generación existentes en el mercado, han influido notablemente en el gran auge de los convertidores DC/DC. Este proyecto intenta solucionar estas ...
    • Effects of cycling on lithium-ion battery hysteresis and overvoltage 

      Ovejas Benedicto, Victòria Júlia; Cuadras Tomàs, Àngel (Nature, 2019-10-16)
      Article
      Accés obert
      Currently, lithium-ion batteries are widely used as energy storage systems for mobile applications. However, a better understanding of their nature is still required to improve battery management systems (BMS). Overvoltages ...
    • Estudi i implementació de reguladors d'hitèresi multifase 

      Arrufat Bordell, Jordi Ramon (Universitat Politècnica de Catalunya, 2008-02-12)
      Projecte/Treball Final de Carrera
      Accés obert
      En el llarg de la nostra vida, hem pogut veure la constant evolució dels ordinadors, en els quals en comprem un d’última generació avui, i demà aquest ja està obsolet i desfasat amb l’aparició al mercat de màquines i ...
    • Fixed switching frequency sliding mode control using an hysteresis band controller 

      Repecho del Corral, Víctor; Biel Solé, Domingo; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a hysteresis band controller in charge of fixing the switching frequency of a sliding mode controller. The proposed control measures the switching period of the control signal and modifies the hysteresis ...
    • Fixed Switching Period Discrete-Time Sliding Mode Current Control of a PMSM 

      Repecho del Corral, Víctor; Biel Solé, Domingo; Arias Pujol, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-25)
      Article
      Accés obert
      A fixed switching period sliding mode control (SMC) for Permanent Magnet Synchronous Machines (PMSMs) is presented. The aim of the paper is to design a SMC that improves the traditional PI based Field Oriented Control (FOC) ...
    • Fluidic active flow control of boundary layer separation on supercritical airfoil 

      Jurado Chillida, Jordi (Universitat Politècnica de Catalunya, 2019-07-15)
      Treball Final de Grau
      Accés obert
      Presently, during critical phases of flight like takeoff, landing or approach, aircrafts need systems as flaps or slats that helps them to improve lift. Those, hydraulic or mechanical, are deployed during these phases in ...
    • Hysteresis based vibration control of base-isolated structures 

      Rodellar Benedé, José; García, Guillem; Vidal Seguí, Yolanda; Acho Zuppa, Leonardo; Pozo Montero, Francesc (2017-10-13)
      Article
      Accés obert
      An active control strategy for base-isolated structures is proposed in this work. The key idea comes from the observation that passive base isolation systems are hysteretic. Thus, an hysteresis based vibration control is ...
    • Hysteresis loop of the LuGre model 

      Fuad Mohammad Naser, Mohammad; Ikhouane, Fayçal (2015-09-01)
      Article
      Accés obert
      The LuGre friction model is used in the current literature to describe the friction phenomenon for mechanical systems. In this paper, we focus on the hysteresis behaviour of the model. More precisely, we describe analytically ...