Characterisation for exponential stability of port-Hamiltonian systems

Authors

Sascha Trostorff, Marcus Waurick

Abstract

Given an energy-dissipating port-Hamiltonian system, we characterise the exponential decay of the energy via the model ingredients under mild conditions on the Hamiltonian density \( \)\mathcal{H}\( \) . In passing, we obtain generalisations for sufficient criteria in the literature by making regularity requirements for the Hamiltonian density largely obsolete. The key assumption for the characterisation (and thus the sufficient criteria) to work is a uniform bound for a family of fundamental solutions for some non-autonomous, finite-dimensional ODEs. Regularity conditions on \( \)\mathcal{H}\( \) for previously known criteria such as bounded variation are shown to imply the key assumption. Exponentially stable port-Hamiltonian systems with densities in L _∞ only are also provided.

Citation

• Journal: Israel Journal of Mathematics
• Year: 2025
• Volume:
• Issue:
• Pages:
• Publisher: Springer Science and Business Media LLC
• DOI: 10.1007/s11856-025-2831-1

BibTeX

@article{Trostorff_2025,
  title={{Characterisation for exponential stability of port-Hamiltonian systems}},
  ISSN={1565-8511},
  DOI={10.1007/s11856-025-2831-1},
  journal={Israel Journal of Mathematics},
  publisher={Springer Science and Business Media LLC},
  author={Trostorff, Sascha and Waurick, Marcus},
  year={2025}
}

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