Ara es mostren els items 13-20 de 20

    • Orbits of controllable and observable systems 

      Clotet Juan, Josep; García Planas, María Isabel (1999)
      Article
      Accés obert
      Let a time-invariant linear system $\left .\aligned \dot x(t)&=Ax(t)+Bu(t)\\y(t)&=Cx(t)\endaligned \right \}$ corresponding to a realization of a prescribed transfer function matrix can be represented by triples of ...
    • Perturbation of quadrics 

      Clotet Juan, Josep; Magret Planas, Maria dels Dolors; Puerta Coll, Xavier (2000)
      Article
      Accés obert
      The aim of this paper is to study what happens when a slight perturbation affects the coefficients of a quadratic equation defining a variety (a quadric) in R^n. Structurally stable quadrics are those a small perturbation ...
    • Second order generalized linear systems. A geometric approach 

      Clotet Juan, Josep; García Planas, María Isabel (2004)
      Article
      Accés obert
      Let (E;A1;A2;B) be a quadruple of matrices representing a two-order generalized time-invariant linear system, E¨x = A1 ˙ x + A2x + Bu. We study the controllability character under an algebraic point of view.
    • Some considerations about reachability of switched linear singular systems 

      Clotet Juan, Josep; Magret Planas, Maria dels Dolors (2015-11-30)
      Article
      Accés obert
      No necessary and sufficient condition for reachability of switched linear singular systems has been found, exceptuating the case of the so-called “equisingular systems”. Such a condition is not valid in the general case, ...
    • Standardizable generalized systems under discrete derivative feedback 

      Clotet Juan, Josep; García Planas, María Isabel (2002)
      Article
      Accés obert
      Given a quadruple of matrices $(E,A,B,C)$ representing a generalized discrete time-invariant system $Ex(k+1)=Ax(k)+Bu(k), y(k)=Cx(k)$, we obtain necessary and sufficient conditions for which the system can be standardized ...
    • 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 ...
    • Switched singular linear systems and reachability 

      Clotet Juan, Josep; Magret Planas, Maria dels Dolors (2011-10)
      Report de recerca
      Accés obert
      We consider switched singular linear systems and conditions for such a system to be reachable/controllable in the cases where some hypotheses hold.
    • Upper bounds for the distance between a controllable switched linear system and the set of uncontrollable ones 

      Clotet Juan, Josep; Magret Planas, Maria dels Dolors (2013-05-28)
      Article
      Accés obert
      he set of controllable switched linear systems is an open and dense set in the space of all switched linear systems. Therefore it makes sense to compute the distance from a controllable system to the nearest uncontrollable ...