Concept

Théorème de Thévenin

Publications associées (70)

Modélisation analytique multiphysique pour la conception optimale de moteurs synchrones à aimants permanents

During the last years, permanent magnets synchronous motors have become a reference in the industrial world, both from the economical and the technical point of view, because of their very good performance in both regards. Thus, application of specific met ...

EPFL2008

Hydrogel viscoelasticity: identification of dissipation sources

Dominique Pioletti, Arne Christian Vogel, Philippe Gaillard

Intervertebral disc (IVD) degeneration is one of the prevailing medical concern and actual health cost. Industries and academic institutions research for therapeutic solutions going from drugs to complete and partial arthroplasty devices as well as enginee ...

2008

Trapping of dielectric particles with light-induced space-charge fields

Demetri Psaltis, James Adleman

Light-induced space-charge fields in lithium niobate crystals are used to trap and manipulate dielectric particles on the surface of such crystals. Without any external voltage source, strong field gradients are present in the proximity of the crystal surf ...

2007

Electromagnetic modelling of planar circuits in bounded layered media

Pedro Crespo Valero

Printed circuits in bounded media encompass a wide range of practical structures such as discontinuities in waveguides, planar circuits embedded in shielded multilayered media or even two-dimensional printed periodic structures. The Electromagnetic (EM) mo ...

EPFL2007

Optimization methodology for piezoelectric transformers design

Yves Perriard, José Fernandez Lopez

The miniaturization of classical electromagnetic transformers raises certain problems such as manufacture both the coils and the magnetic core, increase in magnetic leak and especially electromagnetic pollution of the environment. One interesting solution ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2007

Contributions aux études sur le couplage électroacoustique dans les espaces clos en vue du contrôle actif

Pierre-Jean René

The aim of this work was to analyze the global behavior of a loudspeaker exciting a room in the frequency band of its first modes, for the purpose of active control applications. First, the loudspeaker in free field was studied. The characterization of a l ...

EPFL2006

Equivalent Circuit for RF Flexural Free-Free MEMS Resonators

Massimo Mastrangeli

A method to extract a lumped-parameter equivalent circuit for a free-free flexural MEMS resonator, based on the Euler-Bernoulli beam equation and exploiting a modal analysis approach, is presented. The dynamic behaviour predicted by the equivalent circuit ...

Springer Verlag2006

Two-dimensional impedance imaging of cell migration and epithelial stratification

Philippe Renaud, Yann Barrandon, Thomas Michael Braschler, Olof Pontus Linderholm, Jonas Vannod

We present a miniaturized impedance imaging system, developed for 2D imaging of cell and tissue culture. The system is based on 16 microelectrodes (5 µm × 4 mm). An equivalent circuit for four-point (tetrapolar) impedance spectra was developed and validate ...

2006

Modeling and characteristics comparison of two different piezoelectric transformers

Yves Perriard, José Fernandez Lopez, Jan Holzbecher, Michel Stutz

Electromagnetic transformers have become obstacles to progress power supply miniaturization. Thus, piezoelectric transformers, which are more compact, immune to magnetic field and that present a high galvanic insulation, become more and more an alternative ...

2005

Prediction of resistive and hysteretic losses in a multi-layer high-Tc superconducting cable

Francesco Grilli, Marten Sjöström

In this work, a model of a multi-layer high-Tc superconducting (HTS) cable that computes the current distribution across layers as well as the AC loss is presented. Analyzed is the case of a four-layer cable, but the developed method can be applied to a ca ...

2004

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