• Adaptive finite-time stabilization of chaotic flow with a single unstable node using a nonlinear function-based global sliding mode 

      Mobayen, Saleh; Ma, Jun; Pujol Vázquez, Gisela; Acho Zuppa, Leonardo; Zhu, Quanmin (2019-07)
      Article
      Accés obert
      This article presents a novel adaptive finite-time stabilization technique based on global sliding mode for disturbed chaotic flow with a single unstable node. The considered chaotic flow has unusual characteristics ...
    • Another look at principal curves and surfaces 

      Delicado Useros, Pedro Francisco (2001-03)
      Article
      Accés obert
      Principal curves have been defined as smooth curves passing through the “middle” of a multidimensional data set. They are nonlinear generalizations of the first principal component, a characterization of which is the basis ...
    • 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 ...
    • Linearization of class C1 for contractions on Banach Spaces 

      Munhoz Rodrigues, Hildebrando; Solà-Morales Rubió, Joan de (2003)
      Report de recerca
      Accés obert
      In this work we prove a C1-linearization result for contraction diffeomorphisms, near a fixed point, valid in infinite dimensional Banach spaces. As an intermediate step, we prove a specific result of existence of invariant ...
    • Minor loops of the Dahl and LuGre models 

      Ikhouane, Fayçal; Mañosa Fernández, Víctor; Pujol Vázquez, Gisela (2018-12-01)
      Report de recerca
      Accés obert
      Hysteresis is a special type of behavior encountered in physical systems: in a hysteretic system, when the input is periodic and varies slowly, the steady-state part of the output-versus-input graph becomes a loop called ...
    • On babuška's model for asymmetric hysteresis 

      Ikhouane, Fayçal (2021-04-01)
      Article
      Accés obert
      Hysteresis is a complex phenomenon that occurs in many areas of science and engineering. To model hysteresis, scientists combine first laws of physics with fictitious equations to obtain phenomenological models that aim ...