Ara es mostren els items 1-20 de 59

  • Adaptive backstepping control of a class of hysteretic systems 

    Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (SPIE Press. The International Society for Optical Engineering, 2003-08-01)
    Capítol de llibre
    Accés obert
    A backstepping-based adaptive control is designed for a class of one degree of freedom hysteretic system. The true hysteretic behavior does not need to be known for the controller design. A polynomial description is assumed ...
  • Adaptive backstepping control of some uncertain nonlinear oscillators 

    Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (IEEE Press. Institute of Electrical and Electronics Engineers, 2003-12)
    Capítol de llibre
    Accés obert
    A backstepping-based adaptive controller is designed for a class of uncertain second orded nonlinear systems under the strict-feedback form. It is shown that the closed loop is globally uniformly ultimately bounded and we ...
  • An analytic-numerical method of computation of the Liapunov and period constants derived from their algebraic structure 

    Gasull Embid, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (1996)
    Article
    Accés obert
    We consider the problem of computing the Liapunov and the period constants for a smooth differential equation with a non degenerate critical point. First, we investigate the structure of both constants when they are ...
  • An explicit expression of the first Liapunov and period constants with applications 

    Gasull Embid, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (1996)
    Article
    Accés obert
    In this paper, we study systems in the plane having a critical point with pure imaginary eigenvalues, and we search for effective conditions to discern whether this critical point is a focus or a center; in the case of it ...
  • A presentation on periodic solutions of 2-periodic Lyness difference equations 

    Bastien, Guy; Mañosa Fernández, Víctor; Rogalski, Marc (2012-07-27)
    Presentació
    Accés obert
  • A route to chaos in the Boros-Moll map 

    Gardini, Laura; Mañosa Fernández, Víctor; Sushko, Iryna (2018-04-18)
    Report de recerca
    Accés obert
    The Boros-Moll map appears as a subsystem of a Landen transformation associated to certain rational integrals and its dynamics is related to the convergence of them. In the paper, we study the dynamics of a one-parameter ...
  • Basin of attraction of triangular maps with applications 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2013-07-25)
    Report de recerca
    Accés obert
    We consider some planar triangular maps. These maps preserve certain fibration of the plane. We assume that there exists an invariant attracting fiber and we study the limit dynamics of those points in the basin of attraction ...
  • Basin of attraction of triangular maps with applications 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2014-03)
    Article
    Accés obert
    We consider planar triangular maps that preserve certain fibration of the plane. We assume that there exists an invariant attracting fiber and we study the limit dynamics of those points in the basin of attraction of ...
  • Bifurcation of 2-periodic orbits from non-hyperbolic fixed points 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2017-07-21)
    Report de recerca
    Accés obert
    We introduce the concept of 2-cyclicity for families of one-dimensional maps with a non-hyperbolic fixed point by analogy to the cyclicity for families of planar vector fields with a weak focus. This new concept is useful ...
  • Bifurcation of 2-periodic orbits from non-hyperbolic fixed points 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2018-01)
    Article
    Accés restringit per política de l'editorial
    We introduce the concept of 2-cyclicity for families of one-dimensional maps with a non-hyperbolic fixed point by analogy to the cyclicity for families of planar vector fields with a weak focus. This new concept is useful ...
  • Bounded and dissipative solutions of the Bouc-Wen model for hysteretic structural systems 

    Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (2004-06)
    Capítol de llibre
    Accés obert
    The aim of this paper is to give the conditions on the hysteretic Bouc-Wen model so that (i) it has the property of being bounded input bounded output (BIBO), and (ii) it dissipates energy (or is passive). This study leads ...
  • Centre and isochronicity conditions for systems with homogeneous nonlinearities 

    Gasull Embid, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (1995)
    Article
    Accés obert
    We study the centre-focus problem for systems with homogeneous nonlinearities. In the centre case we study the characterization of the isochronous centres. More explicitly, we derive six necessary conditions to be a ...
  • Continua of periodic points for planar integrable rational maps 

    Gasull Embid, Armengol; Llorens, Mireia; Mañosa Fernández, Víctor (Research India Publications, 2016-09)
    Article
    Accés obert
    We present three alternative methodologies to find continua of periodic points with a prescribed period for rational maps having rational first integrals. The first two have been already used by other authors and apply ...
  • Continua of periodic points for planar integrable rational maps. 

    Gasull Embid, Armengol; Llorens, Mireia; Mañosa Fernández, Víctor (2015-11-30)
    Report de recerca
    Accés obert
    We present three alternative methodologies to find continua of periodic points with a prescribed period for rational maps having rational first integrals. The first two have been already used for other authors and apply ...
  • Decentralized H-infinity control of systems with information structure constraints 

    Rossell Garriga, Josep Maria; Palacios Quiñonero, Francisco; Luo, Ningsu; Mañosa Fernández, Víctor (2011)
    Text en actes de congrés
    Accés obert
    The paper deals with a class of continuous-time statedelayed uncertain systems considering H-infinity control. The main objective is to design static output feedback controllers satisfying three requirements simultaneously: ...
  • Different approaches to the global periodicity problem 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor; Mañosas, Francesc (2013-07-25)
    Report de recerca
    Accés obert
    t Let F be a real or complex n-dimensional map. It is said that F is globally periodic if there exists some p ∈ N + such that Fp(x) = x for all x, where F k = F ◦ F k−1, k ≥ 2. The minimal p satisfying this property is ...
  • Dynamics of integrable birational maps preserving genus 0 foliations 

    Llorens, Mireia; Mañosa Fernández, Víctor (2014-10-03)
    Altres
    Accés obert
  • Global periodicity conditions for maps and recurrences via Normal Forms 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2012-05-04)
    Altres
    Accés obert
    We face the problem of characterizing the periodic cases in parametric families of (real or complex) rational diffeomorphisms having a fixed point. Our approach relies on the Normal Form Theory, to obtain necessary conditions ...
  • Global periodicity conditions for maps and recurrences via normal forms 

    Cima Mollet, Anna; Gasull Embid, Armengol; Mañosa Fernández, Víctor (2013-11)
    Article
    Accés obert
    We face the problem of characterizing the periodic cases in parametric families of rational diffeomorphisms of K, where K is ℝ or ℂ, having a fixed point. Our approach relies on the Normal Form Theory, to obtain necessary ...
  • Identification of one-parameter bifurcations giving rise to periodic orbits, from their period function. 

    Gasull Embid, Armengol; Mañosa Fernández, Víctor; Villadelprat Yagüe, Jordi (Universitat Politècnica de Catalunya. Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2009)
    Text en actes de congrés
    Accés obert