Recent Submissions

  • Convolutional codes under control theory point of view. Analysis of output-observability 

    García Planas, María Isabel; Souidi, El Mamoun; Um, Laurence Emilie (WSEAS Press, 2013)
    Part of book or chapter of book
    Open Access
    In this work we make a detailed look at the algebraic structure of convolutional codes using techniques of linear systems theory. The connection between these concepts help to better understand the properties of ...
  • Factorization of the transfer matrix of a singular linear systems 

    García Planas, María Isabel; López Cabeceira, M. Montserrat (IPACS Electrinic Library, 2011)
    Part of book or chapter of book
    Restricted access - publisher's policy
    Given a linear dynamic time invariant represented by x + ( t ) = Ax ( t ) Bu ( t ) , y ( t ) = Cx ( t ) , we analyze con- ditions for obtention of a coprime factorization of trans- fer matrices of ...
  • Learning automation to teach mathematics 

    Ferrer Llop, Josep; Peña Carrera, Marta; Ortiz Caraballo, Carmen (InTech, 2012-07)
    Part of book or chapter of book
    Open Access
  • Input Observability Analysis of Fixed Speed Wind Turbine 

    García Planas, María Isabel; Domínguez García, José Luís; Mediano Valiente, Begoña (WSEAS Press, 2012-04)
    Part of book or chapter of book
    Open Access
    This paper deals with the concept of input observability in a fixed speed wind turbine. A linear system has been calculated from the nonlinear equations of the squirrel cage induction generator, supposing it connected directly ...
  • Output observability of time-invariant singular linear systems 

    García Planas, María Isabel; Tarragona Romero, Sonia (IPACS Electrinic Library, 2011)
    Part of book or chapter of book
    Open Access
    In this paper finite-dimensional singular linear discrete-time-invariant systems in the form Ex(k + 1) = Ax(k) + Bu(k), y(k) = Cx(k) where E;A 2 M = Mn(C), B 2 Mn£m(C), C 2 Mp£n(C), describing convolutional codes are ...
  • Solving disturbance decoupling for singular systems by p&d-feedback and p&d-output injection 

    García Planas, María Isabel (IPACS Electrinic Library, 2011)
    Part of book or chapter of book
    Open Access
    Singular systems are an important class of systems from both point of view theoretical and practical. In this paper we analyze the problem of constructing feedbacks and/or output injections that suppress this disturbance in ...
  • Perturbation analysis of eigenvalues of polynomial matrices smoothly depending on parameters 

    García Planas, María Isabel; Tarragona Romero, Sonia (Wseas Press, 2011-07)
    Part of book or chapter of book
    Open Access
    Let P(¸) = Pk i=0 ¸iAi(p) be a family of monic polyomial matrices smoothly dependent on a vector of real parameters p = (p1; : : : ; pn). In this work we study behavior of a multiple eigenvalue of the monic polynomial family P(¸).
  • Controllability of time-invariant singular linear systems 

    García Planas, María Isabel; Tarragona Romero, Sonia; Díaz, Adolfo (World Scientific, 2010)
    Part of book or chapter of book
    Restricted access - publisher's policy
    We consider triples of matrices (E; A;B), representing singular linear time invariant systems in the form Ex_ (t) = Ax(t)+Bu(t), with E;A 2 Mn(C) and B 2 Mn£m(C), under proportional and derivative feedback. Structural ...
  • An alternative complete system of invariants for matrix pencils under strict equivalence 

    García Planas, María Isabel; Díaz, Adolfo (WSEAS Press. World Scientific and Engineering Academy and Society, 2009-12)
    Part of book or chapter of book
    Restricted access - publisher's policy
    We consider triples of matrices (E; A;B), representing singular linear time invariant systems in the form Ex_ (t) = Ax(t) + Bu(t), with E;A 2 Mp£n(C) and B 2 Mn£m(C), un- der proportional and derivative feedback. Using ...
  • Sensivity and stability of singular systems under proportional and derivative 

    García Planas, María Isabel (WSEAS Press. World Scientific and Engineering Academy and Society, 2009-12)
    Part of book or chapter of book
    Restricted access - publisher's policy
    We consider triples of matrices (E; A;B), representing singular linear time invariant systems in the form Ex_ (t) = Ax(t) + Bu(t), with E;A 2 Mp£n(C) and B 2 Mn£m(C), un- der proportional and derivative feedback. Using ...

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