Results 101 to 110 of about 39,101 (206)

On switched Hamiltonian systems [PDF]

, 2002
In this paper we study the well-posedness and stability of a class of switched linear passive systems. Instrumental in our approach is the result, also of interest in its own right, that any linear passive input-state-output system with strictly positive
Gerritsen, K.M., Heemels, W.P.M.H., Schaft, A.J. van der   +2 more
core   +1 more source

Exponential stability for infinite-dimensional non-autonomous port-Hamiltonian Systems

, 2019
We study the non-autonomous version of an infinite-dimensional port-Hamiltonian system on an interval $[a, b]$. Employing abstract results on evolution families, we show $C^1$-well-posedness of the corresponding Cauchy problem, and thereby existence and ...
Augner, Björn, Laasri, Hafida
core   +1 more source

Decoding pH‐Driven Phase Transition of Lipid Nanoparticles

Small, Volume 22, Issue 14, 6 March 2026.
Ionizable aminolipids govern lipid nanoparticle (LNP) function through environment‐dependent protonation. Constant‐pH molecular dynamics reveal intrinsic, apparent, and surface pKa${\rm pK}_{\text{a}}$ values within LNP‐mimetic membranes, demonstrating that the LNP lipid environment induces a pronounced downward pKa${\rm pK}_{\text{a}}$ shift exceeding
Marius F.W. Trollmann, Rainer A. Böckmann   +1 more
wiley   +1 more source

Trade costs, infrastructure, and dynamics in a global economy

International Journal of Economic Theory, Volume 22, Issue 1, Page 40-62, March 2026.
Abstract This study develops a dynamic two‐country model with trade costs linked to international infrastructure stock. With variable markups and firm heterogeneity, the welfare impact of trade costs depends on firms' cost distribution. Governments engage in a dynamic public investment game, leading to multiple steady states. The dynamic equilibrium of
Akihiko Yanase
wiley   +1 more source

Port-Hamiltonian Systems: Network Modeling and Control of Nonlinear Physical Systems [PDF]

, 2004
It is shown how port-based modeling of lumped-parameter complex physical systems (multi-body systems, electrical circuits, electromechanical systems,..) naturally leads to a geometrically defined class of systems, called port-Hamiltonian systems. These are Hamiltonian systems defined with respect to a power-conserving geometric structure capturing the ...
openaire   +1 more source

On the velocity-stress formulation for geometrically nonlinear elastodynamics and its structure-preserving discretization

Mathematical and Computer Modelling of Dynamical Systems
We consider the dynamics of an elastic continuum under large deformation but small strain. Such systems can be described by the equations of geometrically nonlinear elastodynamics in combination with the St. Venant-Kirchhoff material law.
Tobias Thoma, Paul Kotyczka, Herbert Egger   +2 more
doaj   +1 more source

Coordinated Control Strategies for SMES-Battery Hybrid Energy Storage Systems

IEEE Access, 2017
Power swings may cause power system instability; therefore, hybrid energy storage systems (HESSs) are necessary to smooth the output of wind farms. Superconducting magnetic energy storage (SMES) systems have a high power density, whereas battery energy ...
Xiaodong Lin, Yong Lei
doaj   +1 more source

Casimir-Based Control Beyond the Dissipation Obstacle

, 2012
A prevailing trend in the stabilization of port-Hamiltonian systems is the assumption that the plant and the controller are both passive. In the standard approach of control by interconnection based on the generation of Casimir functions, this assumption
Jeltsema, Dimitri, Koopman, Johan
core   +1 more source

Passivity-based second-order sliding mode control for mechanical port-Hamiltonian systems

SICE Journal of Control, Measurement, and System Integration
In this paper, we propose a new second-order sliding mode controller for mechanical port-Hamiltonian systems. This paper proposes a passivity-based sliding mode controller based on kinetic-potential energy shaping (KPES).
Kohei Masutani, Naoki Sakata, Kenji Fujimoto, Ichiro Maruta   +3 more
doaj   +1 more source

Parametric Model Order Reduction of Port-Hamiltonian Systems by Matrix Interpolation [PDF]

, 2017
In this paper, parametric model order reduction of linear time-invariant systems by matrix interpolation is adapted to large-scale systems in port-Hamiltonian form.
Giftthaler, Markus, Lohmann, Boris, Panzer, Heiko K. F, Wolf, Thomas   +3 more
core