Journal of Electrical Engineering-elektrotechnicky Casopis最新文献_第4页

Analysis of porous silicon structures using FTIR and Raman spectroscopy 用FTIR和拉曼光谱分析多孔硅结构

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-06-01 DOI: 10.2478/jee-2023-0028

M. Králik, M. Kopani

引用次数: 0

Study on UV optical field distribution of partial discharge in GIS disconnector based on ray tracing method 基于射线追踪法的GIS隔离器局部放电紫外光场分布研究

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0018

F. Du, Jinpeng Jiang, Shuai Yuan, J. Bi, Yuan Xu

引用次数: 0

Allocation of power in NOMA based 6G-enabled internet of things using multi-objective based genetic algorithm 基于多目标遗传算法的基于NOMA的6g物联网中的功率分配

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0012

S. K. Saraswat, V. Deolia, Aasheesh Shukla

引用次数: 0

3D surface crack characterization by eddy current array image and a fast algorithm search 涡流阵列图像表征三维表面裂纹及其快速算法搜索

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0017

A. Abdou, T. Bouchala, B. Abdelhadi, A. Guettafi

引用次数: 0

Dual mode bandpass filter with switchable response 具有可切换响应的双模带通滤波器

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0019

Jia‐lin Li, Kexin Song, Li-Fei Jiang, Jin-Pu Yang, Shao-Qian Zhou

引用次数: 1

A novel data-driven technique to produce multi- sensor virtual responses for gas sensor array-based electronic noses 一种新的数据驱动技术产生多传感器虚拟响应的气体传感器阵列电子鼻

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0013

Sumit Srivastava, S. N. Chaudhri, N. S. Rajput, A. Mishra

{"title":"A novel data-driven technique to produce multi- sensor virtual responses for gas sensor array-based electronic noses","authors":"Sumit Srivastava, S. N. Chaudhri, N. S. Rajput, A. Mishra","doi":"10.2478/jee-2023-0013","DOIUrl":"https://doi.org/10.2478/jee-2023-0013","url":null,"abstract":"Abstract Accurate detection of gas/odor requires highly selective gas sensor. However, the high-performance classification of gases/odors can be achieved using partial-selective gas sensors. Since 1980s, an array of broadly tuned (partial-selective) gas sensors have been used in several fields of science and engineering, and the resulting gas sensing systems (GSS) are popularly known as electronic noses (e-Noses). The combination of similar or different sensors in the array indirectly compensates for the requirement of high selectivity in GSS. Further, e-Nose’s performance inevitably depends on the salient features drawn from the initial responses of the gas sensor array (GSA). So obtained features are referred to as the responses of virtual sensors (VS). In this paper, we have proposed the three-input and three-output (TITO) technique to derive efficient virtual sensor responses (VSRs) which outperform its well-published peer technique. A GSA consisting of four elements is used to demonstrate the proposed technique. Our proposed technique augments the VSRs by four times compared to its peer. The efficacy of our proposed technique has been tested using nine fundamental classifiers, viz., linear support vector machine (100%), decision tree (97.5%), multi-layer perceptron neural network (100%), K-nearest neighbor (85%), logistic regression (100%), Gaussian process with radial basis function (95%), linear discriminant analysis (97.5%), random forest (100%), and AdaBoost (95%). Ten-fold cross-validation has been used to minimize the biasing impact of the intra- and inter-class variance. With the result, four classifiers successfully provide an accuracy of 100 percent. Hence, we have proposed and vindicated an efficient technique.","PeriodicalId":15661,"journal":{"name":"Journal of Electrical Engineering-elektrotechnicky Casopis","volume":"74 1","pages":"102 - 108"},"PeriodicalIF":0.8,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43525983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

High voltage low quiescent current LDO with self-regulation impedance buffer 具有自调节阻抗缓冲器的高压低静态电流LDO

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0014

L. Tian, Zhong Chen, Qinqin Li, Weiheng Wang

引用次数: 0

Accuracy of scanning interrogation of FBG sensors 光纤光栅传感器扫描问询的精度

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0010

F. Urban, R. Helan, F. Urban

{"title":"Accuracy of scanning interrogation of FBG sensors","authors":"F. Urban, R. Helan, F. Urban","doi":"10.2478/jee-2023-0010","DOIUrl":"https://doi.org/10.2478/jee-2023-0010","url":null,"abstract":"Abstract Progress in the fibre optic technology spurred the development of optical fibre-based sensors. A successful fibre optics-based element for sensorial systems is fibre Bragg grating. It allows to read the measured value by the spectral shift of light, which is the variable with a good potential for accurate measurement. Various types of the interrogation of the light spectrum reflected from the measuring grating are discussed in this article and the work concentrates on the spectrum scanning that gives the good chances to diminish measuring errors by a proper choice of parameters. The focal point is the accuracy of establishing the correct value of the maximum reflectance wavelength. The significance of the noise in the photoelectric scanning signal for the measuring accuracy is analysed and the crucial factor is found in the minimizing the reflectance spectral width of the measuring grating and using the spectrum of the scanning light with the same or smaller spectral width. An important aspect is the relation of the maximal reflectance and the wavelength width of the measuring grating reflectance spectrum. The article also shows the potentiality of the apodized gratings for improving the scanning interrogation. A specific index apodization profile was analysed and its advantages are discussed.","PeriodicalId":15661,"journal":{"name":"Journal of Electrical Engineering-elektrotechnicky Casopis","volume":"74 1","pages":"75 - 84"},"PeriodicalIF":0.8,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43232852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of various rotor topologies of surface PM synchronous motor 表面永磁同步电动机各种转子拓扑结构的性能分析

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0011

V. Šarac

{"title":"Performance analysis of various rotor topologies of surface PM synchronous motor","authors":"V. Šarac","doi":"10.2478/jee-2023-0011","DOIUrl":"https://doi.org/10.2478/jee-2023-0011","url":null,"abstract":"Abstract Surface mounted permanent magnet synchronous motors can be found in several designs regarding configuration of magnets on the rotor. Finding the most optimal design in terms of the high efficiency and power factor, small cogging torque and material consumption along with good overloading capability could be a challenging task. This paper analyzes three different rotor designs of surface permanent magnet motors regarding their magnet shapes. All three motors have the same outer dimensions, output power, torque and the material properties. The comparison of all three models is performed and advantages and drawbacks of each model are pointed out. Four design variables are selected to be varied within prescribed limits for each motor model in order the best combination of number of conductors per slot, magnet thickness, the magnet length and shape to be fond, which result with the highest efficiency, small cogging torque and good overloading capability of the motor. The impact of each varied parameter on motor efficiency and cogging torque is presented. All three optimized model are compared and the most optimal model in terms of the above-mentioned characteristics is analyzed by finite element method (FEM) and with the Simulink. The model in Simulink allows motor transient characteristics to be obtained. The performed analysis is useful for determining the most optimal and cost-effective solution among presented three types of surface mounted permanent magnet motors in terms of the high efficiency and power factor, small cogging torque and material consumption.","PeriodicalId":15661,"journal":{"name":"Journal of Electrical Engineering-elektrotechnicky Casopis","volume":"74 1","pages":"85 - 94"},"PeriodicalIF":0.8,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44125812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of SMT component land pad discontinuity effect on the overall transmission line impedance in high-speed applications 高速应用中SMT元件地垫不连续对整体传输线阻抗的影响分析

IF 0.8 4区工程技术

Journal of Electrical Engineering-elektrotechnicky Casopis Pub Date : 2023-04-01 DOI: 10.2478/jee-2023-0016

V. Barzdenas, A. Vasjanov

{"title":"Analysis of SMT component land pad discontinuity effect on the overall transmission line impedance in high-speed applications","authors":"V. Barzdenas, A. Vasjanov","doi":"10.2478/jee-2023-0016","DOIUrl":"https://doi.org/10.2478/jee-2023-0016","url":null,"abstract":"Abstract High-speed and high-frequency PCB interconnect solutions with the slightest discontinuities in the physical geometry along the microstrip transmission line can significantly degrade the integrity of the signal being transferred. This paper presents an analysis of SMT component pads and their impact on the successive transmission line impedance. During 0805, 1206 and 2512 package size SMT component pad discontinuity evaluations it was spotted, that the increasing deviation from target impedance affects the microstrip impedance segment following the discontinuity. A 25 Ω impedance offset at the SMT pad reduces the line impedance afterwards by up to 7 Ω. A 37 Ω impedance offset results in a microstrip impedance reduction by up to 15 Ω, whereas a 45 Ω impedance change leads to a reduction of successive segment impedance by up to 30 Ω. This effect is also present in multiple evenly-spaced discontinuities. But a single reference plane cut-out, which is twice as wide as the SMT component discontinuity, substantially improves the overall impedance of the transmission line, including the successive line segment impedance drop.","PeriodicalId":15661,"journal":{"name":"Journal of Electrical Engineering-elektrotechnicky Casopis","volume":"74 1","pages":"122 - 126"},"PeriodicalIF":0.8,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41622352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0