The Open Electrical & Electronic Engineering Journal最新文献

Creating a Gain Improvement Technique for a Horn Antenna using a Metamaterial Structure Inserted with a Thin Dielectric Sheet 利用插入薄介电片的超材料结构建立喇叭天线增益改进技术

The Open Electrical & Electronic Engineering Journal Pub Date : 2019-05-31 DOI: 10.2174/1874129001913010030

P. Kamphikul, U. Mankong, R. Wongsan

{"title":"Creating a Gain Improvement Technique for a Horn Antenna using a Metamaterial Structure Inserted with a Thin Dielectric Sheet","authors":"P. Kamphikul, U. Mankong, R. Wongsan","doi":"10.2174/1874129001913010030","DOIUrl":"https://doi.org/10.2174/1874129001913010030","url":null,"abstract":"\u0000 \u0000 This paper proposed a new technique for the metamaterial on the structure of the curved-woodpile Electromagnetic Band Gap (EBG) inserted with a dielectric slab for gain improvement in a conventional rectangular horn antenna.\u0000 \u0000 \u0000 \u0000 We described a method to enhance gain by transferring the electromagnetic fields from the aperture of a horn through the EBG structure. Furthermore, we present the design procedures for inserting a dielectric slab into two layers of the EBG structure for the reduction of distance between the horn and proposed EBG structure.\u0000 \u0000 \u0000 \u0000 Such a proposed technique not only has the advantage of decreasing the total length of the antenna system but also providing higher gain with a low profile structure.\u0000 This idea has been verified by both simulation and experimental results. The fabricated antenna can achieve 23.9 dBi of gain or higher than the gain, which is obtained using a conventional rectangular horn antenna at around 7 dBi at an operating frequency of 10 GHz. It is apparent that a good qualitative agreement between the measurements and simulations was achieved.\u0000","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125820546","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

Non-redundant Spherical Near-Field to Far-Field Transformation for a Volumetric Antenna in Offset Configuration 偏置结构体积天线的非冗余球面近场到远场变换

The Open Electrical & Electronic Engineering Journal Pub Date : 2019-02-28 DOI: 10.2174/1874129001913010019

F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi

{"title":"Non-redundant Spherical Near-Field to Far-Field Transformation for a Volumetric Antenna in Offset Configuration","authors":"F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi","doi":"10.2174/1874129001913010019","DOIUrl":"https://doi.org/10.2174/1874129001913010019","url":null,"abstract":"\u0000 \u0000 The development of fast Near-Field (NF) measurement techniques allowing the precise determination of the Far-Field (FF) radiation features of an antenna is becoming more and more challenging nowadays.\u0000 \u0000 \u0000 \u0000 The goal of the article is the development of an NF To FF Transformation (NFTFFT) with spherical scan for offset mounted volumetric Antennas Under Tests (AUTs) requiring, unlike the classical technique, a reduced set of NF data, that is of the same amount as for the onset mounting case, thus making data gathering faster. In fact, the number of NF data needed by the standard approach may considerably increase in this case, since the size of the smallest sphere surrounding the AUT and centered at the center of the measurement sphere rises.\u0000 \u0000 \u0000 \u0000 This goal has been achieved by profitably exploiting the non-redundant sampling representation of electromagnetic field and assuming a volumetric AUT as contained in a sphere. An optimal sampling interpolation algorithm is then employed to precisely reconstruct the input NF data for the traditional spherical NFTFFT from the reduced set of the collected ones.\u0000 \u0000 \u0000 \u0000 The numerical simulations and experimental tests demonstrate the effectiveness of the developed approach accounting for an offset mounting of the AUT.\u0000","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126359253","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: 4

Shape Adaptable Medical Multimedia Processing 形状适应性医学多媒体处理

The Open Electrical & Electronic Engineering Journal Pub Date : 2019-01-31 DOI: 10.2174/1874129001913010001

Ali J. Abboud

{"title":"Shape Adaptable Medical Multimedia Processing","authors":"Ali J. Abboud","doi":"10.2174/1874129001913010001","DOIUrl":"https://doi.org/10.2174/1874129001913010001","url":null,"abstract":"Electronic medical healthcare systems are becoming the backbone of health organizations over the world. The huge amounts of medical multimedia produced by these systems especially images and videos are transmitted by the computer networks that connect these systems. The variability in the shape and texture of transferred medical multimedia data needs adaptable procedures to process these data efficiently. In other words, these procedures must adjust automatically based on the shape of region of interests in the medical multimedia images to cope with fast changes in the healthcare environments. In this paper, we have proposed shape adaptable watermarking approaches for medical multimedia processing systems. The medical images generated by X-rays, MRI and CT modalities are used in our experiments to test proposed approaches. In addition, these approaches were tested under different kinds of signal processing and geometric attacks. The comparative comparison of our proposed approaches with state-of-art approaches proved the superiority and capability of our approaches to adjust the number of selected subands of medical cover image to embed and extract the hospital watermark logos.The development of an adjustable approach to process medical multimedia signals for healthcare system. The aim of this research is to select adaptably the number of subands of cover image to hide the information of hospital logo watermark inside them such that embedded watermarks can resist different kinds of attacks.The proposed adjustable approach consists of suband selection method, criterion, embedding and extraction procedures, DWT transform, attacks, evaluation metrics,etc.It provides robust and adjustable method to embed and extract watermark logo at different resolution levels of cover medical image and uses with images of different sizes and modalities.","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128614338","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

Multilayer Neural Network with Synapse Based on Two Successive Memristors 基于两个连续记忆电阻器的突触多层神经网络

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-12-31 DOI: 10.2174/1874129001812010132

Minh-Huan Vo

引用次数: 2

Mechanical and Electromagnetic Analysis of High Speed Motor/Generator for Electric Turbo Compounding System 电动涡轮复合系统中高速电机/发电机的力学和电磁分析

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-12-28 DOI: 10.2174/1874129001812010121

Bongseok Choi, D. Jung, J. Lee, Ju Lee

{"title":"Mechanical and Electromagnetic Analysis of High Speed Motor/Generator for Electric Turbo Compounding System","authors":"Bongseok Choi, D. Jung, J. Lee, Ju Lee","doi":"10.2174/1874129001812010121","DOIUrl":"https://doi.org/10.2174/1874129001812010121","url":null,"abstract":"\u0000 \u0000 Recently, environment friendly technologies are being introduced as global warming is rapidly progressing. One of the effective way to reduce the problem, Electric Turbo Compounding System has been researched globally. With this system, about 30% exhaust gas can be recycled as a power source. Therefore, this system is effective for engine systems with purposes such as downsizing and increasing efficiency of the system.\u0000 \u0000 \u0000 \u0000 Surface mounted Permanent Magnet Motor is applied to this system due to its high efficiency, power density, small size, and low weight. However, during high speed operation, a retaining sleeve is essential in rotor such as Inconel 718 to satisfy a mechanical safety factor of the rotor. In this paper, through basic theory, the sleeve thickness is predicted according to the permanent magnet dimension and minimum sleeve thickness is determined satisfying mechanical safety factor by mechanical analysis. Furthermore, by electromagnetic analysis output characteristics according to the permanent magnet dimension having same constraints such as volume, current density, current and flux distribution are compared.\u0000 \u0000 \u0000 \u0000 Based on the results of the electromagnetic analysis and mechanical analysis, the appropriate ratio of electric and magnetic loading is determined with equivalent constraint condition. Consequently, only model 2 satisfies the requirement at rated and maximum speed within the current limit.\u0000","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125358206","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

Experimental Design and Verification of Extended State Observers for Magnetic Levitation System Based on PSO 基于粒子群的磁悬浮系统扩展状态观测器的实验设计与验证

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-12-28 DOI: 10.2174/1874129001812010110

A. Humaidi

{"title":"Experimental Design and Verification of Extended State Observers for Magnetic Levitation System Based on PSO","authors":"A. Humaidi","doi":"10.2174/1874129001812010110","DOIUrl":"https://doi.org/10.2174/1874129001812010110","url":null,"abstract":"\u0000 \u0000 This work presents analysis, design and implementation of two schemes of Extended State Observer (ESO) to estimate the position, velocity and unmeasurable states for magnetic levitation systems, Linear ESO (LESO) and Nonlinear ESO (NESO). The multiplicity of design parameters for both LESO and NESO made it difficult to find appropriate setting of these parameters such that to reach satisfactory performance of observation process. \u0000 \u0000 \u0000 \u0000 Particle Swarm Optimization (PSO) technique is used to improve performance of observation process by finding optimal tuned parameters of observer design parameter subjected to specified performance index. Theoretical results of both observers are firstly implemented in the environment of MATLAB/SIMULINK. Then, experimental state estimation of observers is set up based on feedback instrument (33-942S) to verify the simulated results.\u0000 \u0000 \u0000 \u0000 Root Mean Square (RMS) of estimation error has been used as an indicator to assess the performance of observers. The simulated and practical results showed that LESO could give better estimation performance than NESO. \u0000\u0000","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133823526","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: 4

Battery Losses In a MMC for BEVS Application 用于BEVS应用的MMC电池损耗

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-10-30 DOI: 10.2174/1874129001812010098

A. Dannier, G. Brando, I. Spina, D. Iannuzzi

引用次数: 2

Design of Power Density Improvement by Applying Novel Shape of Slit and Notch to Outer Rib of Rotor of Spoke-type Permanent Magnet Synchronous Motor 辐条式永磁同步电动机转子外肋采用新型狭缝和缺口提高功率密度的设计

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-10-24 DOI: 10.2174/1874129001812010075

Hyungkwan Jang, Sooyoung Cho, Kang Seok Lee, Y. Oh, Ju Lee

{"title":"Design of Power Density Improvement by Applying Novel Shape of Slit and Notch to Outer Rib of Rotor of Spoke-type Permanent Magnet Synchronous Motor","authors":"Hyungkwan Jang, Sooyoung Cho, Kang Seok Lee, Y. Oh, Ju Lee","doi":"10.2174/1874129001812010075","DOIUrl":"https://doi.org/10.2174/1874129001812010075","url":null,"abstract":"In this study, improvement of power density by applying novel shape of slit and notch to outer ribs of a rotor that reduces magnetic flux leakage in outer rib and increases air-gap magnetic flux density for spe PMSM for a washing machine, was investigated.It is important that motors for home appliance require lower manufacturing cost, high power and high efficiency. In order to increase power, rotor shape is re-designed. In the outer rib of the rotor, magnetic flux leakage occurs by permanent magnet and magnetic flux is saturated which is one of the factors that reduces the power and efficiency. However, if the outer rib is designed to be too thin, the permanent magnet may scatter during high-speed rotation. Therefore, a design considering permanent magnet scattering is necessary. Motor for a washing machine has two operating points that washing mode at constant torque point and dehydrating mode at high-speed point.For improvement of higher power density, 2-D finite elements analysis was performed to optimize the parameters of the shape of slit and notch to increase the torque. The torque increases by optimizing width and length of slit shape and notch shape. Finally, with the optimized parameters of shape of slit and notch, stack length was adjusted as per torque requirement for a washing machine motor and power density increases considering the safe factor from stiffness analysis.","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133717690","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: 2

Survey of Big Data Role in Smart Grids: Definitions, Applications, Challenges, and Solutions 大数据在智能电网中的作用:定义、应用、挑战和解决方案

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-10-24 DOI: 10.2174/1874129001812010086

M. Ghofrani, A. Steeble, Christopher Barrett, Iman Daneshnia

引用次数: 5

The Calculation and Optimization Research of Renewable Energy Investment Efficiency under Uncertain Conditions 不确定条件下可再生能源投资效率的计算与优化研究

The Open Electrical & Electronic Engineering Journal Pub Date : 2018-08-31 DOI: 10.2174/1874129001812010052

Tao Yi, Yifan Zhang, Yanfeng Guo

{"title":"The Calculation and Optimization Research of Renewable Energy Investment Efficiency under Uncertain Conditions","authors":"Tao Yi, Yifan Zhang, Yanfeng Guo","doi":"10.2174/1874129001812010052","DOIUrl":"https://doi.org/10.2174/1874129001812010052","url":null,"abstract":"\u0000 \u0000 In the renewable energy investment market, there are risks such as fossil fuel price fluctuations, environmental risks caused by pollutant emissions, electricity price fluctuations caused by energy policies, and so on, which bring certain difficulties to measure the investment efficiency.\u0000 \u0000 \u0000 \u0000 In this regard, the paper applies the portfolio theory to the Data Envelopment Analysis (DEA) model to evaluate investment efficiency. First of all, the Monte Carlo method is used to simulate the four uncertain factors of fuel unit price, feed-in tariff, annual operating hours, and carbon price, so as to quantitatively measure the risk and return of different power generation. According to the portfolio theory, it evaluates the portfolio risks and returns, respectively as input and output indicators, so as to build a Data Envelopment Analysis (DEA) model to estimate investment efficiency.\u0000 \u0000 \u0000 \u0000 The simulation and experimental results demonstrate the effectiveness of the presented method. In details, we select a poor efficiency sample, and then, we propose an optimization measure to improve the efficiency. By adjusting the proportion of its investment, the result proves that increasing the proportion of renewable energy can realize optimization and validity of renewable energy investment. Thus, it provides auxiliary support for the investment decision of renewable energy and realizes the coordinated allocation and efficient utilization of renewable energy.\u0000","PeriodicalId":370221,"journal":{"name":"The Open Electrical & Electronic Engineering Journal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126347614","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