Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481381
D. Davino, A. Giustiniani, C. Visone
Performance of hysteretic magnetostrictive transducers can be affected by a variable applied stress if its magnitude is comparable with the mechanical pre-stress. Aim of this paper is to present the design of a controller with hysteresis compensation able to take into account the applied stress. The controller is implemented and tested in a real-time setup and compared with standard closed loop PID controller. The proposed approach leads to better performances with respect to stress-independent (classical) compensators.
{"title":"Experimental tests of a stress-dependent controller for magnetostrictive transducers","authors":"D. Davino, A. Giustiniani, C. Visone","doi":"10.1109/CEFC.2010.5481381","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481381","url":null,"abstract":"Performance of hysteretic magnetostrictive transducers can be affected by a variable applied stress if its magnitude is comparable with the mechanical pre-stress. Aim of this paper is to present the design of a controller with hysteresis compensation able to take into account the applied stress. The controller is implemented and tested in a real-time setup and compared with standard closed loop PID controller. The proposed approach leads to better performances with respect to stress-independent (classical) compensators.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114388746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481489
C. Antunes, T. Almeida, N. Raposeiro, B. Gonçalves, Paulo Almeida
In the last decade, the study of methodologies for heating biological tissue has been an area of most interest in biology and medicine. As a result, the number of electrode solutions has grown in the past years. In this work, we study the capability of using a tubular electrode for heating biological tissue. To test this possibility, liver samples ex-vivo were used and numerical simulations were made. The final results were compared and revealed satisfactory and promising use of tubular electrodes for this kind of application.
{"title":"Thermal ablation in biological tissue using tubular electrode","authors":"C. Antunes, T. Almeida, N. Raposeiro, B. Gonçalves, Paulo Almeida","doi":"10.1109/CEFC.2010.5481489","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481489","url":null,"abstract":"In the last decade, the study of methodologies for heating biological tissue has been an area of most interest in biology and medicine. As a result, the number of electrode solutions has grown in the past years. In this work, we study the capability of using a tubular electrode for heating biological tissue. To test this possibility, liver samples ex-vivo were used and numerical simulations were made. The final results were compared and revealed satisfactory and promising use of tubular electrodes for this kind of application.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116106571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481386
R. Das, D. Lowther
The paper describes a novel approach based on the use of compact support radial basis functions for solving low frequency electromagnetic problems. The objective here is to study its effectiveness compared to the techniques that use global RBFs.
{"title":"Magnetic field computation using com pact support radial basis functions","authors":"R. Das, D. Lowther","doi":"10.1109/CEFC.2010.5481386","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481386","url":null,"abstract":"The paper describes a novel approach based on the use of compact support radial basis functions for solving low frequency electromagnetic problems. The objective here is to study its effectiveness compared to the techniques that use global RBFs.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123347587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481661
P. di Barba, F. Freschi, M. E. Mognaschi, A. Pichiecchio, M. Repetto, A. Savini, A. Vultaggio
A field source reconstruction of the dipoles modeling the activated area of the brain while a subject performs the task of the voluntary motion of the hand is solved. Experimental data resulting from the integration of both EEG and fMRI are used.
{"title":"Field model of electrical activity of the brain during the hand movement: a source identification problem","authors":"P. di Barba, F. Freschi, M. E. Mognaschi, A. Pichiecchio, M. Repetto, A. Savini, A. Vultaggio","doi":"10.1109/CEFC.2010.5481661","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481661","url":null,"abstract":"A field source reconstruction of the dipoles modeling the activated area of the brain while a subject performs the task of the voluntary motion of the hand is solved. Experimental data resulting from the integration of both EEG and fMRI are used.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123930218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481558
A. Modiri, K. Kiasaleh
In this paper, various microstrip antennas (MAs) are designed using a new version of binary Particle Swarm Optimization (BPSO) algorithm in which the velocity calculation is modified in order to arrive at an accelerated and robust search procedure, particularly for software defined applications.
{"title":"Efficient design of microstrip antennas using modified PSO algorithm","authors":"A. Modiri, K. Kiasaleh","doi":"10.1109/CEFC.2010.5481558","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481558","url":null,"abstract":"In this paper, various microstrip antennas (MAs) are designed using a new version of binary Particle Swarm Optimization (BPSO) algorithm in which the velocity calculation is modified in order to arrive at an accelerated and robust search procedure, particularly for software defined applications.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124129495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481412
A. C. Lisboa, D. Vieira, R. R. Saldanha
This paper presents an optimization problem formulation to design broadband antennas with optimal impedance matching considering that the source impedance is tunable inside a range. Usually an antenna is designed to match a given source impedance, which can be too constraining. The new optimization problem formulation is introduced to answer a less strict query: which impedance is optimal for the behavior inside a frequency range of a given antenna? The formulation is used to investigate Archimedean spiral antennas.
{"title":"Optimal impedance matching design for broadband Archimedean spiral antennas","authors":"A. C. Lisboa, D. Vieira, R. R. Saldanha","doi":"10.1109/CEFC.2010.5481412","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481412","url":null,"abstract":"This paper presents an optimization problem formulation to design broadband antennas with optimal impedance matching considering that the source impedance is tunable inside a range. Usually an antenna is designed to match a given source impedance, which can be too constraining. The new optimization problem formulation is introduced to answer a less strict query: which impedance is optimal for the behavior inside a frequency range of a given antenna? The formulation is used to investigate Archimedean spiral antennas.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124220294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481839
L. Strete, I. Husain, O. Cornea, I. Viorel
Direct and inverse analytical models of the switched reluctance motor (SRM) based on finite element method (FEM) results are presented in the paper. The models are obtained using three flux-current characteristics, which can be calculated from 2D-FEM or obtained on a test bench. The models can also be simplified for use in real time control. The model accuracy and versatility in characterizing the SRM behavior have been verified through simulation and test results.
{"title":"Direct and inverse analytical models of a switched reluctance motor","authors":"L. Strete, I. Husain, O. Cornea, I. Viorel","doi":"10.1109/CEFC.2010.5481839","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481839","url":null,"abstract":"Direct and inverse analytical models of the switched reluctance motor (SRM) based on finite element method (FEM) results are presented in the paper. The models are obtained using three flux-current characteristics, which can be calculated from 2D-FEM or obtained on a test bench. The models can also be simplified for use in real time control. The model accuracy and versatility in characterizing the SRM behavior have been verified through simulation and test results.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124247580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481064
Jung Ho Lee, Seung Chul Lee, T. Lee
This paper deals with the PM performance evaluations in a pole changing memory motor (PCMM) using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the characteristics evaluation relative to magnetizing direction and the pole number of machine on re-demagnetization condition in a pole changing memory motor.
{"title":"Characteristics analysis in a pole changing memory motor using coupled FEM & Preisach modeling","authors":"Jung Ho Lee, Seung Chul Lee, T. Lee","doi":"10.1109/CEFC.2010.5481064","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481064","url":null,"abstract":"This paper deals with the PM performance evaluations in a pole changing memory motor (PCMM) using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the characteristics evaluation relative to magnetizing direction and the pole number of machine on re-demagnetization condition in a pole changing memory motor.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125243206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481787
D. Hong, Byung-Chul Woo, Jongmoo Kim, Kwon-Hee Lee
The single-phase BLDCM(Brushless DC Motor) has many defects. This paper compares optimized single-phase BLDCM with existing commercial single-phase BLDCM and develops single-phase BLDCM with high efficiency, satisfying demanded power and torque in pump system. This paper presents the statistical optimum design of single-phase BLDCM for pump system by ANOVA(Analysis of Variance) to select effective design variables, RSM, Kriging and table of orthogonal array. Comparing existing commercial single-phase BLDCM, optimized single-phase BLDCM has better performance in efficiency by 50.6 % with satisfaction to required performance of motor for pump system (speed [1,800 rpm], torque [2 Nmm]).
{"title":"Optimum design of the single-phase outer rotor type Brushless DC motor for pump application using response surface methodology and Kriging","authors":"D. Hong, Byung-Chul Woo, Jongmoo Kim, Kwon-Hee Lee","doi":"10.1109/CEFC.2010.5481787","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481787","url":null,"abstract":"The single-phase BLDCM(Brushless DC Motor) has many defects. This paper compares optimized single-phase BLDCM with existing commercial single-phase BLDCM and develops single-phase BLDCM with high efficiency, satisfying demanded power and torque in pump system. This paper presents the statistical optimum design of single-phase BLDCM for pump system by ANOVA(Analysis of Variance) to select effective design variables, RSM, Kriging and table of orthogonal array. Comparing existing commercial single-phase BLDCM, optimized single-phase BLDCM has better performance in efficiency by 50.6 % with satisfaction to required performance of motor for pump system (speed [1,800 rpm], torque [2 Nmm]).","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126143075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481307
L. Prokopeva, J. Borneman, A. Kildishev
We study a general critical points dispersion model that gives a systematic approach to time-domain modeling of dispersive dielectric functions including the classical Drude, Lorentz, Sellmeier and critical points models. The approach is implemented using an auxiliary differential equation method and a number of recursive convolution formulations embedded in finite-difference, finite-volume, and finite-element time-domain solvers. Comparisons of simulated reflection-transmission spectra of plasmonic nanostructures are presented.
{"title":"Time-domain modeling of metal-dielectric nanostructures characterized by a set of single-pole dispersion terms","authors":"L. Prokopeva, J. Borneman, A. Kildishev","doi":"10.1109/CEFC.2010.5481307","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481307","url":null,"abstract":"We study a general critical points dispersion model that gives a systematic approach to time-domain modeling of dispersive dielectric functions including the classical Drude, Lorentz, Sellmeier and critical points models. The approach is implemented using an auxiliary differential equation method and a number of recursive convolution formulations embedded in finite-difference, finite-volume, and finite-element time-domain solvers. Comparisons of simulated reflection-transmission spectra of plasmonic nanostructures are presented.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126385468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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