Results 41 to 50 of about 40,737 (213)

A Structural Observation on Port-Hamiltonian Systems

open access: yesSIAM Journal on Control and Optimization, 2023
We study port-Hamiltonian systems on a familiy of intervals and characterise all boundary conditions leading to $m$-accretive realisations of the port-Hamiltonian operator and thus to generators of contractive semigroups. The proofs are based on a structural observation that the port-Hamiltonian operator can be transformed to the derivative on a ...
Picard, Rainer H.   +3 more
openaire   +2 more sources

Port Hamiltonian formulation of infinite dimensional systems I. Modeling [PDF]

open access: yes, 2004
In this paper, some new results concerning the modeling of distributed parameter systems in port Hamiltonian form are presented. The classical finite dimensional port Hamiltonian formulation of a dynamical system is generalized in order to cope with the ...
Macchelli, A.   +3 more
core   +4 more sources

A Rosenbrock framework for tangential interpolation of port-Hamiltonian descriptor systems

open access: yesMathematical and Computer Modelling of Dynamical Systems, 2023
We present a new structure-preserving model order reduction (MOR) framework for large-scale port-Hamiltonian descriptor systems (pH-DAEs). Our method exploits the structural properties of the Rosenbrock system matrix for this system class and utilizes ...
Tim Moser, Boris Lohmann
doaj   +1 more source

Explicit Simplicial Discretization of Distributed-Parameter Port-Hamiltonian Systems [PDF]

open access: yes, 2013
Simplicial Dirac structures as finite analogues of the canonical Stokes-Dirac structure, capturing the topological laws of the system, are defined on simplicial manifolds in terms of primal and dual cochains related by the coboundary operators.
Scherpen, Jacquelien M. A.   +2 more
core   +4 more sources

Notch filters for port-Hamiltonian systems [PDF]

open access: yes2012 American Control Conference (ACC), 2012
In this paper a standard notch filter is modeled in the port-Hamiltonian framework. By having such a port-Hamiltonian description it is proven that the notch filter is a passive system. The notch filter can then be interconnected with another (nonlinear) port-Hamiltonian system, while preserving the overall passivity property.
Dirksz, Danny   +3 more
openaire   +4 more sources

Practical fixed-time stabilization for discrete-time impulsive switched port-controlled Hamiltonian systems

open access: yesNonlinear Analysis
This paper is concerned with practical fixed-time (FT) stabilization problem of discretetime impulsive switched port-controlled Hamiltonian systems (DISPCH).
Xiangyu Chen   +3 more
doaj   +1 more source

The Ghost Operator and Its Applications to Reveal the Physical Meaning of Reactive Power for Electrical and Mechanical Systems and Others

open access: yesIEEE Access, 2017
In science and engineering, many concepts are introduced without a clear physical meaning, e.g., imaginary numbers in mathematics and reactive power in electrical engineering.
Qing-Chang Zhong
doaj   +1 more source

Geometric Modeling for Control of Thermodynamic Systems

open access: yesEntropy, 2023
This paper discusses the way that energy and entropy can be regarded as storage functions with respect to supply rates corresponding to the power and thermal ports of the thermodynamic system. Then, this research demonstrates how the factorization of the
Arjan van der Schaft
doaj   +1 more source

Well-posedness and Stability for Interconnection Structures of Port-Hamiltonian Type

open access: yes, 2019
We consider networks of infinite-dimensional port-Hamiltonian systems $\mathfrak{S}_i$ on one-dimensional spatial domains. These subsystems of port-Hamiltonian type are interconnected via boundary control and observation and are allowed to be of distinct
Augner, Björn
core   +1 more source

Passive Sliding Mode Control Strategy for PCHD Model of MMC in Unbalanced Power Grid

open access: yesZhongguo dianli, 2023
When the voltage of the power grid is unbalanced, the DC transmission and distribution system using modular multilevel converters (MMC) as converter devices will encounter problems such as AC current asymmetry and secondary pulsation of active and ...
Daobing LIU   +5 more
doaj   +1 more source

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