Authors

Till Preuster, Bernhard Maschke, Manuel Schaller

Abstract

We analyze infinite-dimensional Hamiltonian systems corresponding to partial Differential equations on one-dimensional spatial domains formulated with formally skew-adjoint Hamiltonian operators and non-quadratic Hamiltonian density. In various applications, the Hamiltonian density can depend on spatial derivatives of the state such that these systems can not straightforwardly be formulated as boundary port-Hamiltonian system using a Stokes-Dirac structure. In this work, we show that any Hamiltonian system of the above class can be reformulated as a Hamiltonian system on the jet space, in which the Hamiltonian density only depends on the extended state variable itself and not on its derivatives. Consequently, well-known geometric formulations with Stokes-Dirac structures are applicable. Additionally, we provide a similar result for dissipative systems. We illustrate the developed theory by means of the the Boussinesq equation, the dynamics of an elastic rod and the Allen-Cahn equation.

Keywords

port-Hamiltonian systems; jet spaces; distributed parameter systems

Citation

  • Journal: IFAC-PapersOnLine
  • Year: 2024
  • Volume: 58
  • Issue: 6
  • Pages: 298–303
  • Publisher: Elsevier BV
  • DOI: 10.1016/j.ifacol.2024.08.297
  • Note: 8th IFAC Workshop on Lagrangian and Hamiltonian Methods for Nonlinear Control LHMNC 2024- Besançon, France, June 10 – 12, 2024

BibTeX

@article{Preuster_2024,
  title={{Jet space extensions of infinite-dimensional Hamiltonian systems}},
  volume={58},
  ISSN={2405-8963},
  DOI={10.1016/j.ifacol.2024.08.297},
  number={6},
  journal={IFAC-PapersOnLine},
  publisher={Elsevier BV},
  author={Preuster, Till and Maschke, Bernhard and Schaller, Manuel},
  year={2024},
  pages={298--303}
}

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References