Bibliografias temáticas / Electromagnetic-Based modeling

Literatura científica selecionada sobre o tema "Electromagnetic-Based modeling"

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Publicado: 25 de maio de 2024

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Artigos de revistas sobre o assunto "Electromagnetic-Based modeling"

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Yang, Tian Peng, e Qi Shuang Ma. "MOSFET Modeling Based on Electromagnetic Interference (EMI)". Applied Mechanics and Materials 268-270 (dezembro de 2012): 1299–303. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1299.

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On the basis of the lumped electric charge, the inner P type body region and the N-type drift region electric charge of VDMOSFET were respectively shown in three districts: accumulation, depletion, inversion. The application of carrier transport equation, continuity equation and Poisson equation, characterized different regions electric charge. According to the variation of the electric charge, the parasitic capacitances were determined, and the model parameters obtained by linear extrapolation and curve fitting. The MOSFET model was completed in MAST language. The results obtained experimentally with Boost circuit and by Saber software simulation confirm the accuracy of MOSFET model.
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Shi, Shouyuan, Brandon Redding, Tim Creazzo, Elton Marchena e Dennis W. Prather. "Quantum Electrodynamic Modeling of Silicon-Based Active Devices". Advances in Optical Technologies 2008 (16 de junho de 2008): 1–11. http://dx.doi.org/10.1155/2008/615393.

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We propose a time-domain analysis of an active medium based on a coupled quantum mechanical and electromagnetic model to accurately simulate the dynamics of silicon-based photonic devices. To fully account for the nonlinearity of an active medium, the rate equations of a four-level atomic system are introduced into the electromagnetic polarization vector. With these auxiliary differential equations, we solve the time evolution of the electromagnetic waves and atomic population densities using the FDTD method. The developed simulation approach has been used to model light amplification and amplified spontaneous emission in silicon nanocrystals, as well as the lasing dynamics in a novel photonic crystal-based silicon microcavity.
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Liang, Xiao Bin, Fan Tang, Jie Wu e Wei Zhen. "Electromagnetic Parameters Extraction of Electronic Current Transformer Based on Finite Element Modeling". Advanced Materials Research 1070-1072 (dezembro de 2014): 1085–91. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1085.

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Electronic current transformer is one of the key equipment of intelligent substation and has a direct impact to the correct operation of relay protection devices. In order to accurately establish the dynamic response model of electronic current transformer, it is needed to extract electromagnetic parameters of Rogowski coil, which is the electromagnetic coupling part of electronic current transformer. This paper builds the electromagnetic parameters model and extracts the electromagnetic distribution parameters of Rogowski coil based on the finite element method, then we use the equivalent method to calculate the lumped electromagnetic parameter. At last, comparing with the experimental results, a good accuracy of the simulation results based on finite element method is presented.
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Karaagac, U., J. Mahseredjian, I. Kocar, G. Soykan e O. Saad. "Partial Refactorization-Based Machine Modeling Techniques for Electromagnetic Transients". IEEE Transactions on Power Delivery 31, n.º 5 (outubro de 2016): 2370–78. http://dx.doi.org/10.1109/tpwrd.2016.2529662.

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Chobanyan, Elene, Dragan I. Olcan, Milan M. Ilic e Branislav M. Notaros. "Volume Integral Equation-Based Diakoptic Method for Electromagnetic Modeling". IEEE Transactions on Microwave Theory and Techniques 64, n.º 10 (outubro de 2016): 3097–107. http://dx.doi.org/10.1109/tmtt.2016.2598175.

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Huang, Chao Qun, e Fei Lai. "Modeling and Experimental Investigation on Vehicle Active Suspension Electromagnetic Actuator". Applied Mechanics and Materials 278-280 (janeiro de 2013): 303–6. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.303.

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A new type of electromagnetic linear actuator for vehicle active suspension was designed, with the characteristics of large stroke and force and fast response. Combined with the finite element analysis software, the finite element model of the electromagnetic actuator was built up. Based on the simulation results, a prototype of electromagnetic linear actuator with appropriate parameters was developed. And the electromagnetic force test of the actuator was done. By comparison of the finite element simulation results and the experimental data, it shows the corresponding results are consistent, indicating that the design and analysis of the electromagnetic actuator is correct.
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Mishra, Anand Kumar, Romil Kumar e Somnath Sarangi. "Mathematical Modeling of Electromagnetic Levitation Based Active Suspension Using Bond Graph". Applied Mechanics and Materials 575 (junho de 2014): 785–89. http://dx.doi.org/10.4028/www.scientific.net/amm.575.785.

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This paper offers motivation for modeling and simulation of an electromagnetic levitation based active suspension system (EMLASS) using bondgraph. Model of EMLASS contains 2 electromagnets as an unsprung mass and one magnet as sprung mass. Levitation based suspension is a novel technique to develop an active suspension over current technology. It has a high dynamic capability which is more sensitive for the road irregularities and its advantage is to provide additional stability to eliminate the effect of road irregularities. Our goal is to develop mathematical modeling and bondgraph modeling of EMLASS.
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Markov, M. B., e S. V. Parot’kin. "Modeling a Stationary Electromagnetic Field Based on the Maxwell Equations". Mathematical Models and Computer Simulations 13, n.º 2 (março de 2021): 254–62. http://dx.doi.org/10.1134/s2070048221020101.

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Tasic, M., e B. Kolundzija. "Efficient electromagnetic modeling based on automated quadrilateral meshing of polygons". Engineering Analysis with Boundary Elements 27, n.º 4 (abril de 2003): 361–73. http://dx.doi.org/10.1016/s0955-7997(02)00124-8.

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Xueru Bai e Zheng Bao. "Imaging of rotation-symmetric space targets based on electromagnetic modeling". IEEE Transactions on Aerospace and Electronic Systems 50, n.º 3 (julho de 2014): 1680–89. http://dx.doi.org/10.1109/taes.2014.120772.

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Teses / dissertações sobre o assunto "Electromagnetic-Based modeling"

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Minteer, Timothy Michael. "Electromagnetic modeling based on directional time-distance energy transfer analogies". Thesis, Washington State University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3587146.

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A new electromagnetic model is established based on an average rate of directional time-distance energy transfers. A directional time-distance energy transfer is defined as an energy carrier mediator (boson) exchange. Electromagnetic force is modeled as mean valued, continual emission and absorption of energy carrier mediators.

For an isolated, spherically symmetric static charge distribution, Maxwell's stress equation is recast using a variant of Stokes' Theorem. The recast stress equation eliminates the stress normal to the electric field and establishes a stress only aligned with the electric field. The remaining stress is identified as an external omnidirectional Poincaré stress, inwardly directed towards the charge distribution. The Poincaré stress is modeled as a mean valued, continual exchange of bosons between the charge distribution and the distant matter of the universe.

For two separated, spherically symmetric static charge distributions, Maxwell's stress equation is recast using a variant of Stokes' Theorem. The recast stress equation develops a line stress that only exists on the straight path between the two charge distributions. The line stress is identified as a Coulomb stress modeled as a mean valued, continual exchange of photons back and forth between two like-charge distributions.

For an isolated, differential current element, Maxwell's stress equation is recast using a variant of Stokes' Theorem. The recast stress equation establishes a pinch stress that is normal to the magnetic field and is directed inward toward the differential current element. Similar to the Poincaré stress, the pinch stress is omnidirectional and is modeled as a mean valued, continual exchange of bosons between the current element and the distant matter of the universe.

For two separated, static differential current elements, a Neumann stress is established by analyzing the historical current force formulas known to be compatible with Maxwell's equations for closed circuits. The term Neumann stress is assigned to the line stress that only exists at each point on the straight path between two separated, differential current elements. Similar to the Coulomb stress, the Neumann stress is modeled as a mean valued, continual exchange of photons back and forth between two differential current elements in opposite directions.

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Chien, Wei-Yin. "Electromagnetic modeling and experimental evaluation of plasmon-based molecular sensors". Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21949.

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The advances in nanoscience and nanotechnology in recent decades have renewed the interests in the optical properties of metals. Today, the field known as Plasmonics studies the control and manipulation of the electromagnetic near-fields of metallic nanostructures in order to realize novel subwavelength optical applications. In particular, this thesis explores the phenomenon of plasmon resonance for molecular sensing. Surface plasmon resonance (SPR) on flat metal surfaces is used for index-of-refraction sensing and localized surface plasmon resonance (LSPR) on metal nanospheres can produce surface-enhanced Raman scattering (SERS). The operation principles and the experimental evaluation of two SPR sensing devices are presented. An integrated sensor and a 2D wavelength-angle modulated version were estimated to have an angular sensitivity of 126°/RIU and 91°/RIU, respectively. Furthermore, through an implementation of a full vector multiple-multipole light scattering method, useful for the calculations of the field focusing efficiency between assemblies of metal nanospheres, we showed that optical frequency electric fields can be enhanced in gold nanoparticle assemblies by an order of 450 in nanometer volumes. Keywords: surface plasmons, plasmonics, optical biosensors, surface-enhanced Raman scattering, optics of metals, nanophotonics, nanomaterials, classical electrodynamics
L'avancée des nanosciences et de la nanotechnologie au cours des dernières décennies a suscité un renouvellement de l'intérêt pour les propriétés optiques des métaux. Aujourd'hui, la Plasmonique cherche à contrôler les champs proches électromagnétiques des nanostructures métalliques afin de bénéficier des nouvelles applications reposant sur l'optique de sous-longueur d'onde. En particulier, ce mémoire explore l'utilisation de la résonance à plasmons pour la capture des molécules. L'étude se divise en la résonance à plasmons de surface (SPR) pour des surfaces métalliques planes et pour des nanosphères métalliques. Ces deux méthodes permettent de créer des capteurs sensibles aux variations d'indice de réfraction et d'autres qui reposent sur des effets non-linéaires tels que la diffusion Raman exaltée de surface (SERS). Suite à l'introduction des bases, l'opération ainsi que des résultats expérimentaux de deux capteurs à plasmons de surface sont présentés. Un capteur intégré et une version 2D avec modulation de longueur d'onde et de l'angle possèdent une sensibilité angulaire d'environ 126°/RIU et 91°/RIU, respectivement. Par la suite, la réalisation de la méthode du multiple-multipole, utile pour évaluer l'efficacité de la concentration des champs entre des nanosphères métalliques, est discutée. Une amélioration de la concentration de champ optique de l'ordre de 450 par des nanospheres d'or est présentée. Mots-clés: plasmon de surface, plasmonique, biocapteurs optiques, diffusion Raman exaltée de surface, optique des métaux, nanophotonique, nanomatériel, électro-dynamique classique
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Spinelli, Giovanni. "Electromagnetic characterization and modeling of CNT-based composites for industrial applications". Doctoral thesis, Universita degli studi di Salerno, 2012. http://hdl.handle.net/10556/343.

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2010 - 2011
In several applications for the aeronautic, automative and electronic industries, there is an increasing demand of structural nanocomposites exhibiting remarkable thermal and mechanical properties and, at the same time, tailored and controlled electromagnetic (EM) performances. The interest and the scientific importance of the topic is justified by the fact that the conventional materials do not have the suitable properties to satisfy the specific requirements for modern applications. Instead, two or more distinct materials may be combined to form a material which possesses superior properties, with respect to those of individual components. Thus the individuation and preparation of advanced composites with best features respect to the traditional materials is currently required in several industrial sectors. Since CNTs can be exploited with varying structural and physical properties, geometry and functionality, that result in a different dispersion and adhesion with the polymer matrix, the possible range of composite material properties can be very large... [edited by author]
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Barzegaran, Mohammadreza. "Physics-Based Modeling of Power System Components for the Evaluation of Low-Frequency Radiated Electromagnetic Fields". FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1239.

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The low-frequency electromagnetic compatibility (EMC) is an increasingly important aspect in the design of practical systems to ensure the functional safety and reliability of complex products. The opportunities for using numerical techniques to predict and analyze system’s EMC are therefore of considerable interest in many industries. As the first phase of study, a proper model, including all the details of the component, was required. Therefore, the advances in EMC modeling were studied with classifying analytical and numerical models. The selected model was finite element (FE) modeling, coupled with the distributed network method, to generate the model of the converter’s components and obtain the frequency behavioral model of the converter. The method has the ability to reveal the behavior of parasitic elements and higher resonances, which have critical impacts in studying EMI problems. For the EMC and signature studies of the machine drives, the equivalent source modeling was studied. Considering the details of the multi-machine environment, including actual models, some innovation in equivalent source modeling was performed to decrease the simulation time dramatically. Several models were designed in this study and the voltage current cube model and wire model have the best result. The GA-based PSO method is used as the optimization process. Superposition and suppression of the fields in coupling the components were also studied and verified. The simulation time of the equivalent model is 80-100 times lower than the detailed model. All tests were verified experimentally. As the application of EMC and signature study, the fault diagnosis and condition monitoring of an induction motor drive was developed using radiated fields. In addition to experimental tests, the 3DFE analysis was coupled with circuit-based software to implement the incipient fault cases. The identification was implemented using ANN for seventy various faulty cases. The simulation results were verified experimentally. Finally, the identification of the types of power components were implemented. The results show that it is possible to identify the type of components, as well as the faulty components, by comparing the amplitudes of their stray field harmonics. The identification using the stray fields is nondestructive and can be used for the setups that cannot go offline and be dismantled
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Lim, Jung Youl. "A distributed multi-level current modeling method for design analysis and optimization of permanent magnet electromechanical actuators". Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53990.

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This thesis has been motivated by the growing needs for multi-degree of freedom (M-DOF) electromagnetic actuators capable of smooth and accurate multi-dimensional driving motions. Because high coercive rare-earth permanent-magnets (PMs) are widely available at low cost, their uses for developing compact, energy-efficient M-DOF actuators have been widely researched. To facilitate design analysis and optimization, this thesis research seeks to develop a general method based on distributed source models to characterize M-DOF PM-based actuators and optimize their designs to achieve high torque-to-weight performance with compact structures To achieve the above stated objective, a new method that is referred to here as distributed multi-level current (DMC) utilizes geometrically defined point sources has been developed to model electromagnetic components and phenomena, which include PMs, electromagnets (EMs), iron paths and induced eddy current. Unlike existing numerical methods (such as FEM, FDM, or MLM) which solve for the magnetic fields from Maxwell’s equations and boundary conditions, the DMC-based method develops closed-form solutions to the magnetic field and force problems on the basis of electromagnetic point currents in a multi-level structure while allowing trade-off between computational speed and accuracy. Since the multi-level currents can be directly defined at the geometrically decomposed volumes and surfaces of the components (such as electric conductors and magnetic materials) that make up of the electromagnetic system, the DMC model has been effectively incorporated in topology optimization to maximize the torque-to-weight ratio of an electromechanical actuator. To demonstrate the above advantages, the DMC optimization has been employed to optimize the several designs ranging from conventional single-axis actuators, 2-DOF linear-rotary motors to 3-DOF spherical motors. The DMC modeling method has been experimentally validated and compared against published data. While the DMC model offers an efficient means for the design analysis and optimization of electromechanical systems with improved computational accuracy and speed, it can be extended to a broad spectrum of emerging and creative applications involving electromagnetic systems.
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DU, ZIWEIHUA. "Time-domain Analysis of Multiconductor Transmission Lines Excited by Transient Electromagnetic Disturbances Based on the Analog Behavior Modeling". Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2842495.

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Nejadpak, Arash. "Development of Physics-based Models and Design Optimization of Power Electronic Conversion Systems". FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/824.

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The main objective for physics based modeling of the power converter components is to design the whole converter with respect to physical and operational constraints. Therefore, all the elements and components of the energy conversion system are modeled numerically and combined together to achieve the whole system behavioral model. Previously proposed high frequency (HF) models of power converters are based on circuit models that are only related to the parasitic inner parameters of the power devices and the connections between the components. This dissertation aims to obtain appropriate physics-based models for power conversion systems, which not only can represent the steady state behavior of the components, but also can predict their high frequency characteristics. The developed physics-based model would represent the physical device with a high level of accuracy in predicting its operating condition. The proposed physics-based model enables us to accurately develop components such as; effective EMI filters, switching algorithms and circuit topologies [7]. One of the applications of the developed modeling technique is design of new sets of topologies for high-frequency, high efficiency converters for variable speed drives. The main advantage of the modeling method, presented in this dissertation, is the practical design of an inverter for high power applications with the ability to overcome the blocking voltage limitations of available power semiconductor devices. Another advantage is selection of the best matching topology with inherent reduction of switching losses which can be utilized to improve the overall efficiency. The physics-based modeling approach, in this dissertation, makes it possible to design any power electronic conversion system to meet electromagnetic standards and design constraints. This includes physical characteristics such as; decreasing the size and weight of the package, optimized interactions with the neighboring components and higher power density. In addition, the electromagnetic behaviors and signatures can be evaluated including the study of conducted and radiated EMI interactions in addition to the design of attenuation measures and enclosures.
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Danufane, Fadil. "Wireless communications assisted by reconfigurable intelligent surfaces : an electromagnetic model". Electronic Thesis or Diss., université Paris-Saclay, 2021. http://www.theses.fr/2021UPASG038.

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L'émergence de l'environnement radio intelligent (SRE) en tant que nouveau paradigme qui remet en question le status quo dans la communication sans fil a motivé l'utilisation des surface intelligentes reconfigurables (RIS) basées sur des métasurfaces pour améliorer la limite de performance des systèmes de communication sans fil. L'objectif principal de cette thèse est la modélisation d'un système de communication assisté par un RIS à l'aide d'approches basées sur l'électromagnétisme.Le Chapitre 1 présente le concept d'environnement radio intelligent. Nous donnons également la définition du RIS et comment le RIS peut être utilisé dans le contexte du SRE. Nous donnons aussi quelques perspectives historiques et discutons le développement des activités de recherche dans ce contexte.Le Chapitre 2 présente les concepts théoriques nécessaires pour comprendre les résultats des chapitres suivants. Ce chapitre est divisé en deux parties. La première partie traite de la modélisation des métasurfaces où nous passons d'une description microscopique basée sur la physique d'une métasurface et introduisons une représentation macroscopique de celle-ci, qui s'avère appropriée pour une application aux communications sans fil. La deuxième partie présente plusieurs approches analytiques qui nous permettent de calculer le champ électromagnétique dans un certain volume..Le Chapitre 3 fournit une comparaison des performances entre les RISs fonctionnant comme des réflecteurs anormaux et un schéma de relais basé sur le décodage et la transmission. La comparaison est qualitative et couvre une multitude de métriques. En outre, une comparaison quantitative en termes de débits de données réalisables est également présentée. En particulier, les résultats numériques montrent que des RISs suffisamment grands peuvent être plus performants que les systèmes assistés par relais en termes de débit de données, tout en réduisant la complexité.Le Chapitre 4 propose une caractérisation analytique du champ électromagnétique en présence d'un RIS qui est modélisé comme une métasurface homogénéisée et qui fonctionne soit en réflexion ou transmission. Des expressions de forme fermée sont également obtenues dans deux régimes asymptotiques qui sont représentatifs de deux déploiements en champ lointain et en champ proche. Sur la base de l'approche proposée, l'impact de plusieurs paramètres est étudié.Enfin, le Chapitre 5 résume la thèse et discute des perspectives futures qui méritent d'être étudiées pour mieux comprendre les avantages et les inconvénients des RISs pour application aux communications sans fil
The emergence of smart radio environment (SRE) as a new paradigm that challenges the status quo in wireless communication has motivated the use of metasurface-based reconfigurable intelligent surface (RIS) to improve the performance limits in wireless communication systems. The main focus of this thesis is the modeling of reconfigurable intelligent surfaces (RIS)-aided communication systems using electromagnetic based methods.Chapter 1 introduces the concept of smart radio environment. We also give the definition of RIS and how RIS can be used in context of SRE. To give some historical perspectives, we also discuss several important milestone papers throughout the development of research activities that lead to the current state of the art.Chapter 2 introduces theoretical concepts that are necessary to understand the results in the subsequent chapters. This chapter is divided into two parts. The first part discusses the metasurfaces modeling where we move from a physics-based microscopic description of a metasurface and introduces a macroscopic representation for it, which is shown to be suitable for application in wireless communications. The second part introduces several analytical approaches that allow us to compute the EM field at any point of a given volume that contains the metasurface.Chapter 3 provides a performance comparison between RISs operating as anomalous reflectors and a decode-and-forward relaying scheme that is representative of competing candidate technologies to realize SREs. The comparison is qualitative and covers multitude metrics. Furthermore, a quantitative comparison in terms of achievable data rates is presented. In particular, the numerical results show that sufficiently large RISs can outperform relay-aided systems in terms of data rate, while reducing the implementation complexity.Chapter 4 proposes an electromagnetic-based analytical characterization of the free-space path-loss of a wireless link in the presence of a RIS that is modeled as a two-dimensional homogenized metasurface made of sub-wavelength scattering elements and that operate either in reflection or transmission mode. The analytical method of physical optics is employed. Closed-form expressions are also obtained in two asymptotic regimes that are representative of far-field and near-field deployments. Based on the proposed approach, the impact of several design parameters and operating regimes is unveiled.Finally, Chapter 5 summarizes the main findings of the thesis and discusses possible future directions that are worth investigating to unlock the full potential of RIS and bring it into practice
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Argyropoulos, Christos. "FDTD modelling of electromagnetic transformation based devices". Thesis, Queen Mary, University of London, 2010. http://qmro.qmul.ac.uk/xmlui/handle/123456789/367.

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During this PhD study, several finite-difference time-domain (FDTD) methods were developed to numerically investigate coordinate transformation based metamaterial devices. A novel radially-dependent dispersive FDTD algorithm was proposed and applied to simulate electromagnetic cloaking structures. The proposed method can ac- curately model both lossless and lossy cloaks with ideal or reduced parameters. It was demonstrated that perfect “invisibility” from electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band. With a few modifications the method is able to simulate general media, such as concentrators and rotation coatings, which are produced by means of coordinate transformations techniques. The limitations of all these devices were thoroughly studied and explo- red. Finally, more useful cloaking structures were proposed, which can operate over a broad frequency spectrum. Several ways to control and manipulate the loss in the electromagnetic cloak ba- sed on transformation electromagnetics were examined. It was found that, by utili- sing inherent electric and magnetic losses of metamaterials, as well as additional lossy materials, perfect wave absorption can be achieved. These new devices demonstrate super-absorptivity over a moderate wideband range, suitable both for microwave and optical applications. Furthermore, a parallel three-dimensional dispersive FDTD method was introdu- ced to model a plasmonic nanolens. The device has its potential in subwavelength imaging at optical frequencies. The finiteness of such a nano-device and its impact on the system dynamic behaviour was numerically exploited. Lastly, a parallel FDTD method was also used to model another interesting coordinate transformation based device, an optical black hole, which can be characterised as an omnidirectional broad- band absorber.
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Kharrat, Mouna. "Contribution au choix d'architecture 3D des systèmes mécatroniques sous contraintes multi-physiques : Application aux Interférences Electro-Magnétiques (IEM)". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST049.

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L’intégration des systèmes mécatroniques génère de nombreuses perturbations multi-physiques (thermiques, électromagnétiques et dynamiques) rendant leur choix d’architecture complexe. En effet, l’introduction croissante de composants électroniques et électriques (E/E) dans la plupart des systèmes actuels, augmente le risque d’occurrence de nombreuses interférences électromagnétiques (IEM) pouvant dégrader fortement leur fonctionnement. Tandis que ces problèmes de compatibilité électromagnétique (CEM) sont généralement traités en phase de conception détaillée, où les possibilités de compromis se limitent à quelques ajustements de positionnement ou à des solutions de protection coûteuses, une solution consiste à proposer un cadre collaboratif pour l’évaluation, dès les premières phases de conception, d’architectures physiques de concept prenant en compte ces contraintes électromagnétiques (EM). En effet, il est important à cette étape, que l’ensemble des acteurs multidisciplinaires impliqués puissent définir, modifier/mettre à jour, ajouter leurs connaissances et contraintes et échanger leurs données tout en continuant à travailler dans leur environnement numérique habituel. Par ailleurs, ces activités d’ingénierie système doivent être outillées avec des approches d’« Ingénierie Système basée sur des modèles » (MBSE), pour supporter la continuité numérique, la cohérence et la traçabilité des modèles et des données nécessaires à ce processus d’évaluation.Pour répondre à ce besoin, cette thèse s’appuie sur l’approche collaborative MBSE SAMOS (Spatial Architecture based on Multi-physics and Organization of Systems) afin de supporter l'évaluation de l'architecture 3D de concept en phase amont sous contraintes électromagnétiques. Dans ce contexte, nous avons, dans un premier temps, développé une extension SysML appelée EMILE (ElectroMagnetic Interactions Layout Extension) pour formaliser et modéliser, au plus tôt, les contraintes EM dans le modèle système.Cette extension inclut notamment la définition des exigences EM, la description des modes de couplage électromagnétiques et la spécification des configurations de simulation permettant la vérification et la validation ultérieures des exigences, grâce au développement d’une interface homme-machine. Notre travail de recherche a ensuite porté sur une méthodologie d’évaluation combinant une approche topologique avec une modélisation EM., afin de supporter le processus d'évaluation qualitative et quantitative des interférences électromagnétiques (IEM). En effet, pour un type d’IEM donné, l'analyse topologique de l’architecture système permet d'identifier qualitativement l'existence des composants victimes et de leurs agresseurs potentiels associés. Une fois ces IEM potentielles identifiées, une évaluation quantitative peut alors être réalisée, par exemple en se basant sur les équations et lois physiques du couplage identifié, et sur les exigences électromagnétiques et géométriques prédéfinies avec EMILE. Cette approche permet ainsi de garantir le choix pertinent d’une architecture physique 3D de concept sous contraintes EM. Les approches proposées ont été illustrées sur une étude de cas d'une chaîne de traction du véhicule électrique, en s’appuyant sur plusieurs scénarios d’implémentation logicielle (SysML, Modelica, Matlab, FreeCAD) au sein de l’outil Sketcher 3D EM
The integration of mechatronic systems generates many multi-physical disturbances (thermal, electromagnetic and dynamic) making their choice of architecture complex. Indeed, the increasing introduction of electronic and electrical (E/E) components in most of the current systems, increases the risk of occurrence of many electromagnetic interferences (EMI) that can strongly degrade their behavior. While these electromagnetic compatibility (EMC) problems are usually addressed in the detailed design phase, where the possibilities of compromise are limited to a few positioning adjustments or costly protection solutions, one solution is to propose a collaborative framework for the evaluation, from the early design phases, of physical design architectures taking into account these electromagnetic (EM) constraints. Actually, it is important at this stage that all the multidisciplinary actors involved can define, modify/update, add their knowledge and constraints and exchange their data while continuing to work in their usual digital environment. In addition, these system engineering activities must be supported with "Model-Based System Engineering" (MBSE) approaches, to support the digital continuity, consistency and traceability of the models and data required for this evaluation process.To meet this need, this thesis is based on the MBSE SAMOS (Spatial Architecture based on Multi-physics and Organization of Systems) collaborative approach to support, from the preliminary design phase, the evaluation of the 3D concept architecture under electromagnetic constraints. In this context, we have initially developed a SysML extension called EMILE (ElectroMagnetic Interactions Layout Extension) to formalize and model, as early as possible, the EM constraints in the system model.This extension notably includes the definition of EM requirements, the description of electromagnetic coupling modes and the specification of simulation configurations allowing the further verification and validation of the requirements, thanks to the development of a Human-Machine Interface. Our research work then focused on an evaluation methodology combining a topological approach with EM modeling, in order to support the process of qualitative and quantitative evaluation of electromagnetic interference (EMI). Indeed, for a given type of EMI, the topological analysis of the system architecture allows to qualitatively identify the existence of the victim components and their associated potential aggressors. Once these potential EMIs have been identified, a quantitative evaluation can then be performed, for example based on the physical equations and laws of the identified coupling, and on the electromagnetic and geometric requirements predefined with the EMILE extension. As a result, this approach ensures the relevant choice of a 3D physical architecture of the concept under EM constraints. The proposed approaches have been illustrated on a case study of an electric vehicle power train, based on various software implementation scenarios (SysML, Modelica, Matlab, FreeCAD) within the Sketcher 3D EM tool
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Livros sobre o assunto "Electromagnetic-Based modeling"

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Smaini, Lydi. RF analog impairments modeling for communication systems simulation: Application to OFDM-based transceivers. Chichester, West Sussex: Wiley, 2012.

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RF analog impairments modeling for communication systems simulation: Application to OFDM-based transceivers. Chichester, West Sussex: Wiley, 2012.

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MATLAB-Based Finite Element Programming in Electromagnetic Modeling. Taylor & Francis Group, 2018.

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Özgün, Özlem, e Mustafa Kuzuoğlu. MATLAB-Based Finite Element Programming in Electromagnetic Modeling. Taylor & Francis Group, 2018.

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Özgün, Özlem, e Mustafa Kuzuoğlu. MATLAB-Based Finite Element Programming in Electromagnetic Modeling. Taylor & Francis Group, 2018.

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Özgün, Özlem, e Mustafa Kuzuoğlu. MATLAB-Based Finite Element Programming in Electromagnetic Modeling. Taylor & Francis Group, 2018.

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Özgün, Özlem, e Mustafa Kuzuoğlu. MATLAB-Based Finite Element Programming in Electromagnetic Modeling. Taylor & Francis Group, 2018.

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Zaitsev, Fedor, e Vladimir Bychkov. Mathematical modeling of electromag-netic and gravitational phenomena by the methodology of continuous media mechanics. LCC MAKS Press, 2021. http://dx.doi.org/10.29003/m2011.978-5-317-06604-8.

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The book of well-known Russian scientists systematically presents a new theoretical approach to studying nature's fundamental phenomena using the hypothesis of the physical vacuum, or the ether, as some environment in which all the processes develop. In the proposed studies, the ether is represented as some one-component continuous media that satisfies generally accepted conservation laws: of matter and momentum. From the appropriate two equations, a number of consequences are obtained to which a physical interpretation is given. For the first time, 150 years after studies of Faraday and Maxwell, it is shown that these single premises mathematically give basic physical laws established experimentally: the Maxwell equations, the Lorentz force, the Gauss theorem; the laws: Coulomb, Biot - Savard, Ampere, electromagnetic induction, Ohm, Joule - Lenz, Wiedemann - Franz, universal gravitation, and etc. Details of mechanisms of many processes, that seemed previously paradoxical, have been disclosed. A method of the model substantiation adopted in the mathematical modeling methodology allows to conclude that the presented mathematical model of the ether adequately describes electromagnetic and gravitational processes. Qualitative and quantitative analysis of hundreds of known and new experimental facts allows in the methodology of physics, as science summarizing the experiments data, to confirm a conclusion about the existence of the ether (physical vacuum). The content of the book is based on the works of authors done during the last fourteen years. Many results are published for the first time. The book is intended for specialists in the field of electrodynamics, electrical engineering, gravity and kinetics, as well as for graduate students and students, interested in the fundamental principles of these scientific directions. This book is unique in terms of the comprehensive consideration of the problem and the depth of its analysis.
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Capítulos de livros sobre o assunto "Electromagnetic-Based modeling"

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Liu, Lanrong, Jie Li e Fulai Che. "Electromagnetic and Thermal Modeling Based on Large Power Transformers". In Modeling and Application of Electromagnetic and Thermal Field in Electrical Engineering, 553–86. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0173-9_14.

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Liu, Tao. "Electromagnetic Property Modeling Based on Product-Level Core Models". In Modeling and Application of Electromagnetic and Thermal Field in Electrical Engineering, 299–344. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0173-9_9.

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Abed, I., N. Kacem, N. Bouhaddi e M. L. Bouazizi. "Optimized Nonlinear MDOF Vibration Energy Harvester Based on Electromagnetic Coupling". In Design and Modeling of Mechanical Systems—III, 31–38. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66697-6_4.

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Caratelli, Diego, Luciano Mescia e Pietro Bia. "Fractional–Calculus–Based FDTD Algorithm for Ultra–Wideband Electromagnetic Pulse Propagation in Complex Layered Havriliak–Negami Media". In Modeling in Mathematics, 1–15. Paris: Atlantis Press, 2017. http://dx.doi.org/10.2991/978-94-6239-261-8_1.

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Rajput, Shivam, Gaurav Kumar, Satyam Swarup, Prasanth Nomula, Anil Pawar, J. C. Joshi, Pradeep Kumar e S. K. Nayak. "Modeling and Simulation of High Energy Capacitor Bank based Electromagnetic Railgun". In Lecture Notes in Electrical Engineering, 313–21. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0337-1_31.

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Zhang, Haiyang, Yufeng Wang, Yong Wang, Enzhong Gong, Zhan Yu, Zhenli Qu, Dandan Lei e Zhengguo Li. "Analysis of Electromagnetic Environment of Distribution Transformer Based on ANSYS Maxwell Modeling". In Lecture Notes in Electrical Engineering, 390–400. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0869-7_43.

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Klyuev, Dmitriy S., Anatoly M. Neshcheret, Oleg V. Osipov e Alexander A. Potapov. "Investigation of Electromagnetic Characteristics of a Chiral Metamaterial Based on Mutually Orthogonal Helical and Fractal Elements". In 13th Chaotic Modeling and Simulation International Conference, 387–98. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70795-8_30.

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Pepe, G., G. Peluso, A. Ruosi, M. Valentino e D. Tescione. "Electromagnetic SQUID Based NDE: a Comparison Between Experimental Data and Numerical FEM Modeling". In Review of Progress in Quantitative Nondestructive Evaluation, 547–54. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_69.

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Ningbo, Gong, Diao Guijie, Chen Hui, Ni Hong, Du Xin e Liu Zhe. "Fast Electromagnetic Scattering Modeling of Complex Scenes Based on Multi-scale Coherent Computation". In Communications in Computer and Information Science, 50–59. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-9195-0_5.

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Zaidi, Tayeb, e Kyoko Fujimoto. "Evaluation and Comparison of Simulated Electric Field Differences Using Three Image Segmentation Methods for TMS". In Brain and Human Body Modelling 2021, 75–87. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15451-5_5.

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AbstractComputational electromagnetic modeling is a powerful technique to evaluate the effects of electrical stimulation of the human brain. The results of these simulations can vary based on the segmentation of the head and brain generated from the patient images. Using an existing boundary element fast multipole method (BEM-FMM) electromagnetic solver, this work compares the simulated electric field differences resulted by the three segmentation methods. A transcranial magnetic stimulation (TMS) coil targeting both the primary motor cortex and the dorsolateral prefrontal cortex (DLPFC) was simulated. Average field differences were small among the three methods (2% for motor cortex, 3% for DLPFC) and the average field differences in the regions directly surrounding the target stimulation point were 5% for the motor cortex and 2% for DLPFC. More studies evaluating different coils and other segmentation options may further improve the computational modeling for robust TMS treatment.
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Trabalhos de conferências sobre o assunto "Electromagnetic-Based modeling"

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Spada, Luigi La. "Electromagnetic modeling of metamaterial-based sensors". In 2014 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO). IEEE, 2014. http://dx.doi.org/10.1109/imws-bio.2014.7032448.

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You, Jian Wei, e Tie Jun Cui. "Electromagnetic Modeling of Nonlinear Graphene-Based Nanostructures". In 2022 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2022. http://dx.doi.org/10.1109/iceaa49419.2022.9899960.

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Barnes, Bryan M., Hui Zhou, Richard M. Silver e Mark-Alexander Henn. "Supplementing rigorous electromagnetic modeling with atomistic simulations for optics-based metrology". In Modeling Aspects in Optical Metrology VII, editado por Bernd Bodermann, Karsten Frenner e Richard M. Silver. SPIE, 2019. http://dx.doi.org/10.1117/12.2525115.

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Thi Bich, Mai Nguyen, e Ngoc Thien Le. "Electromagnetic Field Modeling and Analysis Based on QuickField Simulator". In 2018 4th International Conference on Green Technology and Sustainable Development (GTSD). IEEE, 2018. http://dx.doi.org/10.1109/gtsd.2018.8595507.

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Hursán, Gábor, e Michael S. Zhdanov. "3‐D electromagnetic modeling based on quasi‐analytical series". In SEG Technical Program Expanded Abstracts 1999. Society of Exploration Geophysicists, 1999. http://dx.doi.org/10.1190/1.1820997.

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Huang, Nick K. H., Tao Wang, Li Jun Jiang e X. Y. Xiong. "Data pattern based electromagnetic interference modeling for IC packaging". In 2014 IEEE 23rd Electrical Performance of Electronic Packaging and Systems (EPEPS). IEEE, 2014. http://dx.doi.org/10.1109/epeps.2014.7103640.

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Karaagac, Ulas, Jean Mahseredjian, Ilhan Kocar, Gurkan Soykan e Omar Saad. "Partial refactorization based machine modeling techniques for electromagnetic transients". In 2017 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2017. http://dx.doi.org/10.1109/pesgm.2017.8274156.

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Kafafy, Raed, Abdulhakeem Javeed, Moumen Idres e Sany Ihsan. "Modeling Flutter-Based Microgenerators". In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70964.

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Flutter-based micro generators have been successfully demonstrated to power wireless sensors. Since environmental wind speeds vary widely, flutter-based micro generators which are designed to operate within particular range of wind speeds will underperform elsewhere. At low wind speeds, magnets embedded near the ends of the belt will not move the desired distance between the coils, thereby reducing the energy conversion. A broadband flutter-based micro generator will have pick-up coils embedded on several vibrating elements with different dimensions. The coils are particularly concentrated near the point of maximum speed to maximize power output. The variation in fluttering element dimensions allows the microgenerator to generate considerable power at a wide range of wind speeds. In this work, we develop a mathematical model for the flutter-based micro generator, which addresses the wind – structure interaction, induced vibrations and electromagnetic transduction. The model primarily makes use of equations from bridge deck and thin plane analysis of flutter due to their similarities, and they are formulated to provide the velocity. This is later fed into electromagnetic transduction equations to calculate the output power. The model is useful to determine the significant design parameters of a flutter-based micro generator. The dynamic response and power output of a broadband micro generator with coils embedded on a set of cantilever films vibrating with respect to an external permanent magnetic field are calculated.
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Chu, Sung Yul, e Al-Thaddeus Avestruz. "Electromagnetic Model-Based Foreign Object Detection for Wireless Power Transfer". In 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2019. http://dx.doi.org/10.1109/compel.2019.8769626.

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Zaky, Mostafa, e Kamal Sarabandi. "Physics-Based Modeling and Electromagnetic Scattering Computation for Snow-Packs". In 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO). IEEE, 2019. http://dx.doi.org/10.1109/nemo.2019.8853777.

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Relatórios de organizações sobre o assunto "Electromagnetic-Based modeling"

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Hussein, Y. Time-Domain Electromagnetic-Physics-Based Modeling of Complex Microwave Structures. Office of Scientific and Technical Information (OSTI), abril de 2004. http://dx.doi.org/10.2172/826850.

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