Inhalt des Dokuments
Preprint 06-2017
Port-Hamiltonian descriptor systems
Author(s) :
Christopher Beattie
,
Volker Mehrmann
,
Hongguo Xu
,
Hans Zwart
Preprint series of the Institute of Mathematics, Technische Universität Berlin
Preprint 06-2017
MSC 2000
- 93A30 Mathematical modeling
-
93B11 System structure simplification
Abstract :
The modeling framework of port-Hamiltonian systems is systematically extended to constrained dynamical systems (descriptor systems, differential-algebraic equations). A new algebraically and geometrically defined system structure is derived. It is shown that this structure is invariant under equivalence transformations, and that it is adequate also for the modeling of high-index descriptor systems. The regularization procedure for descriptor systems to make them suitable for simulation and control is modified to deal with the port-Hamiltonian structure. The relevance of the new structure is demonstrated with several examples.
Keywords :
port-Hamiltonian system, descriptor system, differential-algebraic equation, passivity, stability, system transformation, differentiation-index, strangeness-index, skew-adjoint operator