On composition of Dirac structures and its implications for control by interconnection

  • Joaquín Cervera
  • Arjan J. van der Schaft
  • Alfonso Baños
Conference paper
Part of the Lecture Notes in Control and Information Sciences book series (LNCIS, volume 281)


Network modeling of complex physical systems leads to a class of nonlinear systems, called Port-Controlled Hamiltonian Systems (PCH systems). These systems are geometrically defined by a state space manifold of energy variables, a power-conserving interconnection formalized as a Dirac structure, together with the total stored energy and a resistive structure. Basic features of these systems include their compositionality properties (a power-conserving interconnection of PCH systems is again a PCH system), and their stability and stabilizability properties exploiting the energy function and the Casimir functions.

In the present paper we further elaborate on the compositionality properties of Dirac structures by providing an explicit parametrization of all achievable closed-loop Dirac structures in terms of their constituent parts. Amongst others this opens up the way to a complete characterization of the class of PCH systems which are stabilizable by interconnection with a PCH controller.


Resistive Structure Star Product Compositionality Property Dirac Structure Casimir Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Joaquín Cervera
    • 1
  • Arjan J. van der Schaft
    • 2
  • Alfonso Baños
    • 1
  1. 1.Departamento de Informática y SistemasUniversidad de MurciaSpain
  2. 2.Fac. of Mathematical SciencesUniversity of TwenteEnschedeThe Netherlands

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