Ara es mostren els items 66-81 de 81

    • Regularity of the Brunovsky-Kronecker stratification 

      Ferrer Llop, Josep; García Planas, María Isabel; Puerta Sales, Ferran (1998)
      Article
      Accés obert
      We study the partition of the set of pairs of matrices according to the Brunovsky- Kronecker type. We show that it is a constructible stratification, and that it is Whitney regular when the second matrix is a column matrix. ...
    • Salutació 

      Ferrer Llop, Josep (Càtedra UNESCO a la UPC de Sostenibilitat, 2005-05)
      Article
      Accés obert
    • Salutació 

      Ferrer Llop, Josep (Càtedra UNESCO de Sostenibilitat de la UPC, 2003-05)
      Article
      Accés obert
    • Salutació 

      Ferrer Llop, Josep (Càtedra Unesco de Sostenibilitat de la UPC, 2004-05)
      Ressenya
      Accés obert
    • State canonical form for a class of uncontrollable linear systems 

      Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Taylor & Francis, 2019-10-16)
      Article
      Accés obert
      We tackle the obtaining of canonical forms for classifying linear control systems with regard to changes in the state variables. Although it was solved in the 1980s for controllable systems, it is still an open problem for ...
    • Stratification and bundle structure of the set of conditioned invariant subspaces in the general case 

      Ferrer Llop, Josep; Puerta Sales, Ferran; Puerta Coll, Xavier (2000)
      Article
      Accés obert
      We extend some known results about the smooth stratification of the set of conditioned invariant subspaces for a general pair $(C,A)\in\w C^n\times\w C^{n+m}$ without any assumption on the observability. More precisely ...
    • Stratification and bundle structure of the set of conditioned invariant subspaces in the general case 

      Ferrer Llop, Josep; Puerta Sales, Ferran; Puerta Coll, Xavier (2003)
      Article
      Accés obert
      We extend some known results about the smooth stratification of the set of conditioned invariant subspaces for a general pair $(C,A)\in\w C^n\times\w C^{n+m}$ without any assumption on the observability. More precisely ...
    • Stratification and bundle structure of the set of general (A,B)-invariant subspaces 

      Ferrer Llop, Josep; Puerta Sales, Ferran; Puerta Coll, Xavier (1998)
      Article
      Accés obert
      Given (A,B) in Hom(C^(n+m) C^n), we prove that the set of (A,B)-invariant subspaces having a fixed Brunovsky-Kronecker structure is a submanifold of the corresponding grassman manifold, and we compute its dimension. Also, ...
    • Structural stability of planar bimodal linear systems 

      Ferrer Llop, Josep; Peña Carrera, Marta; Susín Sánchez, Antonio (2014-01-01)
      Article
      Accés obert
      Structural stability ensures that the qualitative behavior of a system is preserved under small perturbations. We study it for planar bimodal linear dynamical systems, that is, systems consisting of two linear dynamics ...
    • Structural stability of planar bimodal linear systems 

      Ferrer Llop, Josep; Peña Carrera, Marta; Susín Sánchez, Antonio (American Institute of Physics (AIP), 2013)
      Text en actes de congrés
      Accés obert
      We consider bimodal linear dynamical systems consisting of two linear dynamics acting on each side of a given hyperplane, assuming continuity along the separating hyperplane. Focusing in the planar case, we describe which ...
    • Switched singular linear systems 

      Clotet Juan, Josep; Ferrer Llop, Josep; Magret Planas, Maria dels Dolors (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-06)
      Text en actes de congrés
      Accés obert
      We consider switched singular linear systems and determine the set of reachable/controllable states. We derive necessary and sufficient conditions for such a system to be reachable/controllable when an “equisingularity ...
    • TEORIA DE SISTEMES LINEALS // SISTEMES DE CONTROL LINIAL (Examen 2n quadrim) 

      Ferrer Llop, Josep (Universitat Politècnica de Catalunya, 1999-06-10)
      Examen
      Accés restringit a la comunitat UPC
    • TEORIA DE SISTEMES LINEALS // SISTEMES DE CONTROL LINIAL (Examen 2n quadrim) 

      Ferrer Llop, Josep (Universitat Politècnica de Catalunya, 1998-06-11)
      Examen
      Accés restringit a la comunitat UPC
    • TEORIA DE SISTEMES LINEALS // SISTEMES DE CONTROL LINIAL (Examen 2n quadrim) 

      Ferrer Llop, Josep (Universitat Politècnica de Catalunya, 1999-06-10)
      Examen
      Accés restringit a la comunitat UPC
    • Use of reduced forms in the disturbance decoupling problem 

      Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Elsevier, 2009-03)
      Article
      Accés restringit per política de l'editorial
      Specific algorithms, such as those involving the supremal of the invariant subspaces contained in a suitable subspace, are known to be able to test whether a disturbance decoupling problem (DDP) is solvable. Here, by ...
    • Versal deformations of invariant subspaces 

      Ferrer Llop, Josep; Puerta Sales, Ferran (Elsevier, 2001)
      Article
      Accés obert
      We describe a miniversal deformation of invariant subspaces (with regard to a fixed endomorphism) by means of a technique which can be applied to obtain explicitly miniversal deformations in a general orbit space. In ...