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Serbian Journal of Electrical Engineering最新文献

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Modeling of different tower grounding systems using hybrid continuous circuit-trapezoidal integration method 采用连续电路-梯形混合积分法对不同塔架接地系统进行建模
Serbian Journal of Electrical Engineering Pub Date : 2021-06-30 DOI: 10.2298/sjee2102225a
Mohammadbagher Asadpourahmadchali, M. Niasati, Y. Alinejad‐Beromi
{"title":"Modeling of different tower grounding systems using hybrid continuous circuit-trapezoidal integration method","authors":"Mohammadbagher Asadpourahmadchali, M. Niasati, Y. Alinejad‐Beromi","doi":"10.2298/sjee2102225a","DOIUrl":"https://doi.org/10.2298/sjee2102225a","url":null,"abstract":"In order to protect the transmission lines against lightning strikes, it is\u0000 important to investigate the tower grounding system. In this paper, a recent\u0000 method called hybrid continuous circuit-trapezoidal integration method is\u0000 used to calculate the impulse impedance of the grounding system. Moreover,\u0000 conventional structures of the grounding systems have been simulated and the\u0000 results show that, with the same wire length, the square with additional\u0000 wire system has the least impulse impedance as compared to counterpoise,\u0000 square and crow?s foot. Moreover, the effects of soil resistivity and\u0000 lightning current rise-time on the impulse impedance of these grounding\u0000 systems are investigated. It is concluded that the design of the grounding\u0000 system depends on the geographic location of the site in terms of soil\u0000 resistivity and isotropic characteristics of the area in terms of lightning\u0000 current rise-time.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41409835","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
Corrigendum on: Big Data and development of smart city: System architecture and practical public safety example [Serb. Jour. of Elect. Eng., Vol. 17, No. 3, Oct. 2020, pp. 337 - 355] 关于:大数据与智慧城市发展:系统架构和公共安全实例的勘误表[塞尔维亚]。日记账。选举。Eng。， Vol. 17, No. 3, october 2020, pp. 337 - 355]
Serbian Journal of Electrical Engineering Pub Date : 2021-02-28 DOI: 10.2298/sjee2101137e
Milica Đekić
{"title":"Corrigendum on: Big Data and development of smart city: System architecture and practical public safety example [Serb. Jour. of Elect. Eng., Vol. 17, No. 3, Oct. 2020, pp. 337 - 355]","authors":"Milica Đekić","doi":"10.2298/sjee2101137e","DOIUrl":"https://doi.org/10.2298/sjee2101137e","url":null,"abstract":"The authors of the paper entitled \"Big Data and Development of Smart City:\u0000 System Architecture and Practical Public Safety Example\", Mirko Simic,\u0000 Miroslav Peric, Ilija Popadic, Dragana Peric, Milos Pavlovic, Miljan Vucetic\u0000 and Milos S. Stankovic, informed the Editor about the error in the position\u0000 of the author Miljan Vucetic, who should be at the third position. The\u0000 authors have requested for this error to be corrected. Therefore, the\u0000 journal is publishing this Corrigendum. The authors of this article should\u0000 be listed as follows: Mirko Simic, Miroslav Peric, Miljan Vucetic, Ilija\u0000 Popadic, Dragana Peric, Milos Pavlovic, Milos Stankovic. \u0000<br><br><font color=\"red\"><b> Link to the corrected article <u><a href=\"http://dx.doi.org/10.2298/SJEE2003337S\">10.2298/SJEE2003337S</a></b></u>","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46103038","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
Filter design using data fusion for a pneumatic control valve 基于数据融合的气动控制阀滤波器设计
Serbian Journal of Electrical Engineering Pub Date : 2021-02-01 DOI: 10.2298/SJEE2101049N
Bhagya R. Navada, S. Venkata
{"title":"Filter design using data fusion for a pneumatic control valve","authors":"Bhagya R. Navada, S. Venkata","doi":"10.2298/SJEE2101049N","DOIUrl":"https://doi.org/10.2298/SJEE2101049N","url":null,"abstract":"This paper presents a filter design technique for a pneumatic valve using\u0000 data fusion techniques. The objective of this paper is to examine the\u0000 suppression of the effect of parameters causing deviation from normal system\u0000 performance using the technique of data fusion over time. The output of a\u0000 system affected by inherited noise is processed by applying operations such\u0000 as finding the statistical variance, time warping, interpolation, and\u0000 extrapolation. These techniques are used to compute the transfer function of\u0000 the filter, which when cascaded with the system will suppress the effect of\u0000 noise on the process. The operation of the control valve is affected by\u0000 characteristics such as stiction, structural deformation, etc. The\u0000 characteristics of the system are studied and data for multiple time\u0000 instances are extracted to carry out fusion across time by dynamic time\u0000 warping. Tests show that the filter presented here can suppress the effects\u0000 of stiction and mechanical deformation on the output signal.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46893546","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
An energy efficient hybrid MAC protocol for smart home networks 一种适用于智能家居网络的节能混合MAC协议
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/SJEE2101063P
Atul Kumar, N. Gupta
{"title":"An energy efficient hybrid MAC protocol for smart home networks","authors":"Atul Kumar, N. Gupta","doi":"10.2298/SJEE2101063P","DOIUrl":"https://doi.org/10.2298/SJEE2101063P","url":null,"abstract":"In this paper cluster-based hybrid MAC (CB-HMAC) protocol, based on IEEE 802.15.4 MAC is proposed for smart home networks. The CB-HMAC is specially designed for short packet transmission in a dense home network environment. Simulation results show that the proposed CB-HMAC is more energy-efficient than other medium access control (MAC) protocols without sacrificing much delay and throughput.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754646","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
Analysis of watermarking techniques in multimedia communications 多媒体通信中的水印技术分析
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/sjee2103321s
B. Sridhar, V. Syambabu
{"title":"Analysis of watermarking techniques in multimedia communications","authors":"B. Sridhar, V. Syambabu","doi":"10.2298/sjee2103321s","DOIUrl":"https://doi.org/10.2298/sjee2103321s","url":null,"abstract":"Multimedia information is critical of examining, information perceived and which are illustrated by the human cerebrum. In our brain, 33% of the cortical area concentrates only on visual information processing. Digital watermarking technology is being received to guarantee and encourage such kinds of digital data authentication, security, and copyright. These algorithms permit the expandable values of different techniques to prevent the problems of copyright issues during the transmission. This paper discusses the detailed about the point by point investigation of watermarking definition and different watermarking applications and strategies used to improve information security.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754812","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
A rhomboid-shaped printed monopole antenna for wideband circular polarization 用于宽带圆极化的菱形印刷单极天线
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/sjee2103385l
Z. Lwin, T. Aye
{"title":"A rhomboid-shaped printed monopole antenna for wideband circular polarization","authors":"Z. Lwin, T. Aye","doi":"10.2298/sjee2103385l","DOIUrl":"https://doi.org/10.2298/sjee2103385l","url":null,"abstract":"This paper presents the design of a wideband circularly-polarized printed monopole antenna with a rhomboid shape. The rhomboid-shaped patch is fed by a microstrip line offset from the center to generate circular polarization (CP). The ground plane configuration is optimized for wide bandwidth operation. Bandwidth (satisfying both 10-dB return loss and 3-dB axial ratio) of 76% (1.92 - 4.27 GHz) is achieved in this research. The size of the proposed antenna is 0.386 2 0 l (55?66 mm2) where ?0 is the free space wavelength which corresponds to the center frequency of the bandwidth. The antenna has a fractional bandwidth-size ratio (BW/size) of 1.97 which is higher than most CP monopole antennas in the literature. This antenna is suitable for Wi-Fi, WiMAX, and other wireless applications which outperform using circular polarization.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754842","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
Experimental indoor validation of weak intensity fluctuations over free-space optical communication link 自由空间光通信链路弱强度波动的室内实验验证
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/SJEE2101015M
Dejan N. Milic, D. Milovic, J. Anastasov
{"title":"Experimental indoor validation of weak intensity fluctuations over free-space optical communication link","authors":"Dejan N. Milic, D. Milovic, J. Anastasov","doi":"10.2298/SJEE2101015M","DOIUrl":"https://doi.org/10.2298/SJEE2101015M","url":null,"abstract":"In this paper, we present experimental results for characterizing turbulence phenomena in free-space optical (FSO) communication under laboratory controlled conditions. Collected data is used for statistical determination of the probability density function (PDF) of irradiance signal fluctuations. In literature, there are a number of empirical models for variety of turbulence regimes. Thus, obtained PDF is compared with selected models from the bibliography in order to describe properly statistical properties of real turbulent channel and help improving of FSO system performance calculation. In overall, analysis has shown that the results obtained under given constraints fit well with the exponentiated Weibull turbulence model.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"18 1","pages":"15-27"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754441","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
Electricity consumption forecast for Tarkwa using autoregressive integrated moving average and adaptive neuro fuzzy inference system 基于自回归综合移动平均和自适应神经模糊推理系统的塔克瓦电力消费预测
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/SJEE2101075O
Robert Ofosu Agyare, B. Odoi, M. Asamoah
{"title":"Electricity consumption forecast for Tarkwa using autoregressive integrated moving average and adaptive neuro fuzzy inference system","authors":"Robert Ofosu Agyare, B. Odoi, M. Asamoah","doi":"10.2298/SJEE2101075O","DOIUrl":"https://doi.org/10.2298/SJEE2101075O","url":null,"abstract":"Electricity has become one of the inelastic goods in our world today. The proper functioning of most equipment today relies on electricity. Taking Tarkwa which is a mining community into consideration, the various mines, schools, shops, banks and other companies in the municipality massively rely on electricity for their day to day running. Therefore, knowing the exact amount of electricity to produce and distribute for the smooth running of businesses and basic living is of great necessity. This study compared and formulated a model to forecast and predict the daily electrical energy consumption in Tarkwa for the year 2019. The data used was a monthly dataset for the year 2018 and it comprised of the temperature, wind speed, population and electricity consumption for Tarkwa. The methods used were Artificial Neuro-Fuzzy Inference System (ANFIS) and Autoregressive Integrated Moving Average (ARIMA). The ANFIS was used as a predictor to predict the electricity consumption based on the training and testing of the dependent and independent variables. The ARIMA was used to forecast the dependent and independent variables for 2019. These simulations were done using MATLAB and Minitab. The results of the analysis revealed that the training and testing dataset allowed ANFIS to learn and understand the system but the ANFIS could only forecast the 2019 electricity consumption after the input data to the system was changed to the ARIMA forecasted 2019 independent variables. It was observed that the amount of electricity consumed in 2019 increased by 14%.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"18 1","pages":"75-94"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754668","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
Modelling and optimising a new hybrid ad-hoc network cooperation strategy performance using genetic algorithm 基于遗传算法的混合自组网合作策略性能建模与优化
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/sjee2102193j
Noor Kareem, Abbas Allawy Mohammed, Mustafa Shubbar Safaa
{"title":"Modelling and optimising a new hybrid ad-hoc network cooperation strategy performance using genetic algorithm","authors":"Noor Kareem, Abbas Allawy Mohammed, Mustafa Shubbar Safaa","doi":"10.2298/sjee2102193j","DOIUrl":"https://doi.org/10.2298/sjee2102193j","url":null,"abstract":"The lifetime of an ad-hoc network depends on a mobile device?s limited battery capacity. In ad-hoc multi-hop communication, source nodes use intermediate nodes as a relay to communicate with remote destinations. As cooperation between nodes is restrained by their battery resources, it might not be in their best interests to always accept relay requests. Therefore, if all nodes decide how much energy to spend for relaying, selfish or non-cooperative nodes reduce cooperation by rejecting to forward packets to others, thereby leading to a dramatic drop in the network?s throughput. Three strategies have been founded to solve this problem: tit-for-tat, live-and-let-live, and selective drop. This research explored a new strategy in ad-hoc cooperation which resulted from the combination of the live-and-let-live and selective drop strategies. This new strategy is based on the suggestion to select fewer hops with a low drop percentage and sufficient power to stay alive after forwarding the data packets towards the destination or other relays at the route path. We used a genetic algorithm (GA) to optimise the cooperative problem. Moreover, the fitness equation of the GA population was designed according to the mixing of the two strategies, which resulted in a new optimized hybrid dynamic-static cooperation.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754919","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
Effect of adaptive line enhancement filters on noise cancellation in ECG signals 自适应线增强滤波器对心电信号噪声消除的影响
Serbian Journal of Electrical Engineering Pub Date : 2021-01-01 DOI: 10.2298/sjee2103291k
G. Karraz
{"title":"Effect of adaptive line enhancement filters on noise cancellation in ECG signals","authors":"G. Karraz","doi":"10.2298/sjee2103291k","DOIUrl":"https://doi.org/10.2298/sjee2103291k","url":null,"abstract":"Power line interference is the main noise source that contaminates Electrocardiogram (ECG) signals and measurements. In recent years, adaptive filters with different approaches have been investigated to eliminate power line interference in ECG waveforms. Adaptive line enhancement filter is a special type of adaptive filter that, unlike other adaptive filters, does not require a reference signal and has potential application in ECG signal filtering. In this paper, a selflearning filter based on an adaptive line enhancement (ALE) filter is proposed to remove power line interference in ECG signals. We simulate the adaptive filter in MATLwith a noisy ECG signal and analyze the performance of algorithms in terms of signal-to-noise ratio (SNR) improvement. The proposed algorithm is validated with Physikalisch-Technische Bundesanstalt (PTB) ECG signals database. Additive white gaussian noise is added to the raw ECG signal. Influential parameters on the ALE filter performance such as filter delay, the convergence factor, and the filter length are analyzed and discussed.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68754773","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
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