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arXiv · 2611.06080

Descriptor representations of geometric port-Hamiltonian systems on Hilbert spaces

Anna Fischer·Timo Reis
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Abstract

We establish conversions in both directions between geometric and descriptor representations of linear port-Hamiltonian systems on infinite-dimensional Hilbert spaces. For the geometric-to-descriptor conversion, we represent the possibly multivalued inverse Dirac relation by a skew-adjoint operator on enlarged Hilbert spaces, retaining the original operator-domain restrictions. The construction accommodates internal and external ports. We show that the conversions preserve trajectories and the power balance. An incompressible Kelvin--Voigt solid illustrates the results.

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Anna Fischer, Timo Reis. 2026-11-04. Descriptor representations of geometric port-Hamiltonian systems on Hilbert spaces. https://arxiv.org/abs/2611.06080

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