P. Kennes, B. Onkelinx, and C. Van Himbeeck
Cochlear Technology Centre Europe, Mechelen, Belgium
The key component in Direct Acoustical Cochlear Stimulation (C-DACS) therapy is an implantable micro-actuator that generates vibrations that are directly coupled to the oval window of the inner ear. The actuator comprises a balanced armature whose magnetic field is modulated by the coil current. A virtual prototyping environment is set-up to support the actuator design optimization in terms of ...
Royal Institute of Technology
School of Engineering
Electromagnetic Engineering Lab
There is a considerable world-wide interest among lightning protection engineers and designers on the improvement of the standard procedures to assess the location of the most vulnerable places on complex structures to be struck by lightning flashes. This paper presents the implementation of the Self-consistent Lightning Interception Model in Matlab by using the COMSOL Multiphysics 3.5 ...
J. Güdelhöfer, R. Gottkehaskamp, A. Hartmann
Department of Electrical Machines and Electromagnetic Field Theory, University of Applied Sciences Düsseldorf, Düsseldorf, Germany
This paper shows how a time-dependent and non-linear simulation of the dynamic operation behavior of an induction machine is executed by means of the \"Rotating Machinery\" interface from COMSOL Multiphysics 4.2a. The two-dimensional FEM model is connected to electrical circuits by coupling the physics \"Rotating Machinery\" and \"Electrical Circuit\" interfaces. These circuits include the lumped ...
C. Del Vecchio, G. Agapito, L. Carbonaro, F. Marignetti, E. De Santis, Y. Coia
National Institute for Astrophysics, Arcetri Astrophysical Observatory, Firenze, Italy
University of Cassino and Southern Latium, Cassino, Italy
VRALA is the ideal candidate as an Adaptive Optics actuator at visible wavelengths. Its electric characteristics variations, suitable current commands, and an effective magnetic circuit geometry provide a 2 kHz correction bandwidth and a 25 mm actuator density. The magnetic core allows unprecedented performances with a negligible thermal impact. Pre-shaping the coil currents greatly simplifies ...
ABB, Corporate Research, Västerås, Sweden
Modern power transmission systems are in general designed to operate at high voltages in order to reduce resistive losses generated by high currents. This, however, tends to increase the risk for dielectric breakdown or flashovers if the equipment is not properly designed to withstand the stress. The present work illustrates how multiphysics simulations can be used to analyze and predict the ...
Electromagnetic Parameters Extraction for Integrated-Circuit Interconnects for Open Three Conductors with Two Levels Systems
S.M. Musa, M.N.O. Sadiku, J.D. Oliver
Prairie View A&M University, Prairie View, TX, USA
The accurate estimate of values of electromagnetic parameters are essential to determine the final circuit speeds and functionality for designing of high-performance integrated circuits and integrated circuits packaging. In this paper, a new quasi-TEM capacitance and inductance analysis of multiconductor multilayer interconnects is successfully demonstrated using the finite element method (FEM) ...
Nogueira, A.1, Nóvoa, X.R.1, Keddam, M.2, Vivier, V.2
1 Universidade de Vigo (E.T.S.E.I.) Spain
2 UPR 15 CNRS “LISE”, case 133 - Université P. & M. Curie, Paris, France
The electrochemical impedance spectroscopy (EIS) measurements in reinforced concrete are reported and compared with 3D-finite element simulations with FEMLAB software. It was shown that the current injected in the cement past was partially collected by the reinforcement. Moreover, from both experimental results and calculations, it was shown that the fraction of current collected depends on the ...
Optimization of an Adiabatic Demagnetization Refrigerator’s Superconducting Magnet Shield for the Micro-X High-Resolution Microcalorimeter X-ray Imaging Rocket
E. Figueroa-Feliciano, M. Cavolowsky, C. Macklin, Z. Li, A. Sharer, and A. Walker
 Massachusetts Institute of Technology, Cambridge, MA
 Olin College, Needham, MA
We are working on the design of a sounding rocket payload to perform high-resolution imaging spectroscopy of the Puppis A supernova remnant. This rocket payload uses Transition-Edge-Sensor Microcalorimeters, which are superconducting detectors that obtain very high (2 eV FWHM at 6 keV) imaging spectra. These devices need to be cooled to 50 mK, for which we are designing an adiabatic ...
Simulation-based Analysis of the Spatial Sensitivity Function of an Electrical Capacitance Tomography System
A. Fuchs, and H. Zangl
Institute of Electrical Measurement and Measurement Signal Processing, Graz University of Technology, Graz, Austria
This paper investigates the effects of the soft field character of an Electrical Capacitance Tomography system by means of analyzing the 3D sensitivity distribution of the pipe interior using Finite Element Analysis.The aim of the determined sensitivity is to overcome restrictions caused by the soft field without being forced to use (active) guarding strategies.
L. Rossini, E. Onillon, O.Chetelat, and C. Allegranza
Centre Suisse d’Electronique et Microtechnique, Switzerland
ESA/ESTEC, The Netherlands
In the frame of an ESA project, CSEM in collaboration with other partners has developed an innovative Attitude Orbit Control System concept that relies on a Reaction Sphere. We propose to use one unique magnetic bearing Reaction Sphere whose spin axis and angular velocity can be positioned by dedicated control. The design is based on a 3-D permanent magnet motor obtained with a multi pole rotor ...