Journal of Mechatronics Engineering最新文献_第2页

Modeling and control of an active knee orthosis using a computational model of the musculoskeletal system 使用肌肉骨骼系统的计算模型建模和控制一个主动膝关节矫形器

Journal of Mechatronics Engineering Pub Date : 2018-12-14 DOI: 10.21439/JME.V1I3.19

Denis Mosconi, P. F. Nunes, A. Siqueira

引用次数: 5

Ultrashort pulses propagation through different approaches of the Split-Step Fourier method 超短脉冲通过不同的分步傅里叶方法传播

Journal of Mechatronics Engineering Pub Date : 2018-12-13 DOI: 10.21439/JME.V1I3.20

José Stênio De Negreiros Júnior, Daniel Do Nascimento e Sá Cavalcante, Jermana Lopes de Moraes, L. R. Marcelino, Francisco Tadeu De Carvalho Belchior Magalhães, Renata Rodrigues Barboza, Marcos Lúnciel Rocha Menezes de Carvalho, Glendo De Freitas Guimarães

{"title":"Ultrashort pulses propagation through different approaches of the Split-Step Fourier method","authors":"José Stênio De Negreiros Júnior, Daniel Do Nascimento e Sá Cavalcante, Jermana Lopes de Moraes, L. R. Marcelino, Francisco Tadeu De Carvalho Belchior Magalhães, Renata Rodrigues Barboza, Marcos Lúnciel Rocha Menezes de Carvalho, Glendo De Freitas Guimarães","doi":"10.21439/JME.V1I3.20","DOIUrl":"https://doi.org/10.21439/JME.V1I3.20","url":null,"abstract":"Simulating the propagation of optical pulses in a single mode optical fiber is of fundamental importance for studying the several effects that may occur within such medium when it is under some linear and nonlinear effects. In this work, we simulate it by implementing the nonlinear Schrödinger equation using the Split-Step Fourier method in some of its approaches. Then, we compare their running time, algorithm complexity and accuracy regarding energy conservation of the optical pulse. We note that the method is simple to implement and presents good results of energy conservation, besides low temporal cost. We observe a greater precision for the symmetrized approach, although its running time can be up to 126% higher than the other approaches, depending on the parameters set. We conclude that the time window must be adjusted for each length of propagation in the fiber, so that the error regarding energy conservation during propagation can be reduced.","PeriodicalId":303991,"journal":{"name":"Journal of Mechatronics Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123705409","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}

引用次数: 0

Embedded Linux System for Digital Image Recognition using Internet of Things 基于物联网的嵌入式Linux数字图像识别系统

Journal of Mechatronics Engineering Pub Date : 2018-10-07 DOI: 10.21439/JME.V1I2.14

D. Freire, R. I. S. Pereira, Maiara Jéssica Ribeiro Silva, S. C. S. Jucá

引用次数: 1

IoT system of news by image for internal enterprise communication 面向企业内部传播的图像新闻物联网系统

Journal of Mechatronics Engineering Pub Date : 2018-10-07 DOI: 10.21439/JME.V1I2.15

Pedro Vitor de Sousa Guimarães, S. C. S. Jucá, R. I. S. Pereira, Ayrton Alexsander Monteiro Monteiro

引用次数: 0

EFFECTS OF La2O3 AND Bi2O3 ADDITIONS ON THE MICROWAVE DIELECTRIC AND ANTENNA PROPERTIES OF SrBi2Nb2O9 CERAMIC MATRIX La2O3和Bi2O3添加量对SrBi2Nb2O9陶瓷基体微波介电和天线性能的影响

Journal of Mechatronics Engineering Pub Date : 1900-01-01 DOI: 10.21439/jme.v4i2.94

R. F. Abreu, F. R. Silva, S. Saturno, D. M. Colares, T. O. Abreu, J. D. do Nascimento, Emmanuelle de Oliveira Sancho Oliveira, J. Sales, D. X. Gouveia, A. Sombra

{"title":"EFFECTS OF La2O3 AND Bi2O3 ADDITIONS ON THE MICROWAVE DIELECTRIC AND ANTENNA PROPERTIES OF SrBi2Nb2O9 CERAMIC MATRIX","authors":"R. F. Abreu, F. R. Silva, S. Saturno, D. M. Colares, T. O. Abreu, J. D. do Nascimento, Emmanuelle de Oliveira Sancho Oliveira, J. Sales, D. X. Gouveia, A. Sombra","doi":"10.21439/jme.v4i2.94","DOIUrl":"https://doi.org/10.21439/jme.v4i2.94","url":null,"abstract":"This work presents a comparison between the dielectric properties of the SrBi2Nb2O9(SBN) ceramic matrix and the individual additions of Bi2O3 and La2O3, suggesting the material that would be most suitable for microwave applications. The SBN sample was synthesized by solid-state reaction, and the X-ray diffraction method (XRD) was used for the structural characterization of the materials analyzed in this study. Thermal stability of the samples was measured experimentally by studying the temperature coefficient of resonant frequency (τf ) the results confirm that the individual additions of 15 wt% of Bi2O3 or La2O3 improved the thermostability of the composites. The Hakki-Coleman method was used to obtain the dielectric properties in the microwave range, and it is possible to observe that the dielectric permittivity of the composites increased, while their loss tangents decreased. The numerical simulation demonstrated the functioning of the materials as dielectric resonating antennas (DRA), with a reflection coefficient below -10 dB in all samples.","PeriodicalId":303991,"journal":{"name":"Journal of Mechatronics Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128083253","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}

引用次数: 1