On Representations and Integrability of Mathematical Structures in Energy-Conserving Physical Systems

Authors

Abstract

In the present paper we elaborate on the underlying Hamiltonian structure of interconnected energy-conserving physical systems. It is shown that a power-conserving interconnection of port-controlled generalized Hamiltonian systems leads to an implicit generalized Hamiltonian system, and a power-conserving partial interconnection to an implicit port-controlled Hamiltonian system. The crucial concept is the notion of a (generalized) Dirac structure, defined on the space of energy-variables or on the product of the space of energy-variables and the space of flow-variables in the port-controlled case. Three natural representations of generalized Dirac structures are treated. Necessary and sufficient conditions for closedness (or integrability) of Dirac structures in all three representations are obtained. The theory is applied to implicit port-controlled generalized Hamiltonian systems, and it is shown that the closedness condition for the Dirac structure leads to strong conditions on the input vector fields.

Citation

Journal: SIAM Journal on Control and Optimization
Year: 1998
Volume: 37
Issue: 1
Pages: 54–91
Publisher: Society for Industrial & Applied Mathematics (SIAM)
DOI: 10.1137/s0363012996312039

BibTeX

@article{Dalsmo_1998,
  title={{On Representations and Integrability of Mathematical Structures in Energy-Conserving Physical Systems}},
  volume={37},
  ISSN={1095-7138},
  DOI={10.1137/s0363012996312039},
  number={1},
  journal={SIAM Journal on Control and Optimization},
  publisher={Society for Industrial & Applied Mathematics (SIAM)},
  author={Dalsmo, Morten and van der Schaft, Arjan},
  year={1998},
  pages={54--91}
}

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References

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