Topic
Computational electromagnetics
About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.
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16 May 2005
TL;DR: This paper discovers and researches problems on numerical oscillations of the solution in element-free Galerkin method when it uses high order polynomial basis, and puts forward the meshless method based on orthogonal basis (MLMBOB), which holds nearly all qualities of EFGM and removes many drawbacks of it.
Abstract: This paper discovers and researches problems on numerical oscillations of the solution in element-free Galerkin method (EFGM) when it uses high order polynomial basis, and puts forward the meshless method based on orthogonal basis (MLMBOB), which is composed of essential boundary conditions with Penalty method, then gets the numerical solutions of the partial differential equations. This method holds nearly all qualities of EFGM and removes many drawbacks of it, and it has high accuracy when high order orthogonal basis is used. Therefore, it is fit for many problems in engineering computational electromagnetics. Examples are given to prove the proposed method.
23 citations
22 Mar 2011
TL;DR: The effect of the parameters of Genetic Algorithms on the convergence of the electromagnetic inverse method is studied to model the radiated emissions of electrical circuits with the electric and magnetic dipole from near field measurement.
Abstract: Nowadays, the EMC researches have been advanced. The evolution, the diversity of the calculation's method and computing resources have to emphasize the investigations dedicated to the electromagnetic modeling method. Thus, we find the electromagnetic inverse method. It attracted the attention of several research's teams. This method can use different methods of optimization and, especially, the Genetic Algorithms (GA). In this work, we apply the electromagnetic inverse method coupled with the method of GA in order to model the radiated emissions of electrical circuits with the electric and magnetic dipole from near field measurement. In this paper, we study the effect of the parameters of Genetic Algorithms on the convergence of the electromagnetic inverse method. To do it, we changed the main parameters of GA in Matlab and we study the effect of each parameter.
23 citations
16 Dec 1992
TL;DR: In this paper, the authors discuss the mu-synthesis of an electromagnetic suspension system and use the D-K iteration approach for the controller design, which achieves not only nominal performance and robust stability, but also robust performance.
Abstract: The authors discuss the mu -synthesis of an electromagnetic suspension system. The issue of modeling a real physical electromagnetic suspension system is discussed. A nominal model as well as a set of models in which the real system is assumed to reside is derived. Different model structures and possible model parameter values are fully employed to determine unstructured additive plant perturbation, which directly yield the uncertainty weighting. Based on the set of plant models, the robust performance control objectives are defined. Using the mu -Analysis and Synthesis Toolbox, use is made of the D-K iteration approach for the controller design. Implementing the controller with a digital signal processor mu PD77230, experiments are carried out to evaluate the robust performance of this design. It was shown that the closed-loop system with the mu -controller achieves not only nominal performance and robust stability, but also robust performance. >
23 citations
TL;DR: In this paper, the problem of determining the currents excited on a wire enclosed within a rectangular cavity is considered, and an integral equation is formulated for the problem in the frequency domain using equivalent dipole moments to approximate the effects of the aperture.
Abstract: The problem of determining the currents excited on a wire enclosed within a rectangular cavity is considered. The wire and cavity interior are excited by electromagnetic sources exterior to the cavity which couple to the cavity interior through a small aperture in the cavity wall. It is assumed that the wire is thin, straight, and oriented perpendicular to one of the cavity walls. An integral equation is formulated for the problem in the frequency domain using equivalent dipole moments to approximate the effects of the aperture. This integral equation is then solved numerically by the method of moments. The dyadic Green's function for this problem are difficult to compute numerically; consequently, extensive numerical analysis is necessary to render the solution tractable. SampIe numerical results are presented for representative configurations of cavity, wire, and aperture.
23 citations