Gegenstand dieser Arbeit ist die Erweiterung der Theorie der port-gesteuerten dissipativen Hamiltonschen Systeme, oder kurz port-Hamiltonschen Systeme, auf Modelle offener thermodynamischer Systeme. Die port-Hamiltonschen Systeme sind eine wohlbekannte und gut untersuchte Systemklasse für die Modellierung…
We study port-control for metriplectic systems. Using the well-known representation of metriplectic systems as dissipative Hamiltonian systems with the exergy as Hamiltonian function, the corresponding port-controlled Hamiltonian systems are considered as exergy-controlled metriplectic systems. The applicability…
The definition of conservative-irreversible functions is extended to smooth manifolds. Local representation of these functions is studied and reveals that they can not necessarily be given as the weighted product of almost Poisson brackets, but as the sum of such. The biquadratic functions induced by…
We give insight in the structure of port-Hamiltonian systems as control systems in between two closed Hamiltonian systems. Using the language of category theory, we identify systems with their behavioural representation and view a port-control structure with desired structural properties on a given closed…
We study the geometric structure of port-Hamiltonian systems. Starting with the intuitive understanding that port-Hamiltonian systems are “in between” certain closed Hamiltonian systems, the geometric structure of port-Hamiltonian systems must be “in between” the geometric structures of the latter systems.…
The present work is a successor of Ilchmann and Kirchhoff (Math Control Signals Syst 33:359–377, 2021) on generic controllability and of Ilchmann and Kirchhoff (Math Control Signals Syst 35:45–76, 2022) on relative generic controllability of linear differential-algebraic equations. We extend the result…
The present work is a successor of Ilchmann and Kirchhoff (Math Control Signals Syst 33:359–377, 2021. https://doi.org/10.1007/s00498-021-00287-x), Ilchmann and Kirchhoff (Math Control Signals Syst 35:45–76, 2023. https://doi.org/10.1007/s00498-021-00287-x) on (relative) generic controllability of unstructured…
Irreversible Port Hamiltonian Systems are a deviation from Port Hamiltonian Systems which embeds the definition of the irreversible phenomena taking place in the system. They are defined with respect to a quasi-Poisson bracket which ensures the positiveness of the entropy generation and is expressed…