Elektronika Ir Elektrotechnika最新文献_第10页

Power and Energy Consumption Models for Embedded Applications 嵌入式应用的功率和能耗模型

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-10-26 DOI: 10.5755/j02.eie.31345

Momcilo Krunic

引用次数: 0

Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change 温度对感应电机等效电路参数变化影响的实时研究

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-10-26 DOI: 10.5755/j02.eie.31198

H. Terzioglu, Abdullah Cem Ağaçayak

{"title":"Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change","authors":"H. Terzioglu, Abdullah Cem Ağaçayak","doi":"10.5755/j02.eie.31198","DOIUrl":"https://doi.org/10.5755/j02.eie.31198","url":null,"abstract":"Today’s developing technology and increasing demands in production areas continue the importance of studies on induction motors (IMs). To meet the demands, the mathematical modeling of IMs must be performed fully and accurately. Variable conditions cause changes in many electrical, magnetic, and thermal parameters. A change in parameters affects the intensity, efficiency of the operating currents of the machine, thereby changing the motor losses.\u0000In this article, the objective is to determine the changes in the equivalent circuit parameters of three-phase squirrel-cage induction motors (SCIMs) with different powers under the variable conditions (stator winding temperature, load, and motor shaft speed). Supervisory control and data acquisition (SCADA) program read real-time information (temperature, current, voltage, power, shaft speed, and torque) from the experiments and necessary calculations were made. When the test results were examined, a maximum of 9 % change was observed in the motor ECPs (RS, R2, RM, XS, X2, and XM) at different shaft speeds as a result of the change in the stator winding temperature between 100 % and 110 %. At different loads, this rate of change increases to 16 %. This has shown that motor shaft speed and load, together with temperature, have a significant effect on the ECPs.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46315755","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

Improvement of Automotive Sensors by Migrating AUTOSAR End-to-End Communication Protection Library into Hardware 将AUTOSAR端到端通信保护库移植到硬件中改进汽车传感器

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-10-26 DOI: 10.5755/j02.eie.31154

H. V. Caprita, D. Selișteanu

{"title":"Improvement of Automotive Sensors by Migrating AUTOSAR End-to-End Communication Protection Library into Hardware","authors":"H. V. Caprita, D. Selișteanu","doi":"10.5755/j02.eie.31154","DOIUrl":"https://doi.org/10.5755/j02.eie.31154","url":null,"abstract":"This paper explores new methods to increase the level of safety of data transfer between sensors and electronic control units (ECUs) in automotive communication. A new model of basic sensors to be used in automotive electronics is proposed. This model contains hardware modules that implement the end-to-end communication protection (E2E) mechanism, as defined by the Automotive Open System Architecture (AUTOSAR) standard. By adding this feature inside the sensors, it is possible that, in addition to increasing the safety level, these sensors can be directly connected to the network ECUs via standard communication buses (e.g., Local Interconnect Network (LIN), Controller Area Network (CAN), Flexray, etc.). This paper describes the model, design, and mapping (in a Field Programmable Gate Array device (FPGA)) of the hardware E2E module capable of generating the Cyclic Redundancy Code (CRC) and counter signal for a customized message. This message represents the output of the new sensor E2E module used in a safety communication as requested by the automotive E2E standard. The model is validated also by comparing the data output of the E2E hardware with the data output of the AUTOSAR software E2E library. Finally, future needs and directions are suggested in this area.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42807573","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

Oral Microbiome and Dental Caries Development. 口腔微生物群与龋齿发展

IF 0.5 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-09-30 DOI: 10.3390/dj10100184

Josie Shizhen Zhang, Chun-Hung Chu, Ollie Yiru Yu

{"title":"Oral Microbiome and Dental Caries Development.","authors":"Josie Shizhen Zhang, Chun-Hung Chu, Ollie Yiru Yu","doi":"10.3390/dj10100184","DOIUrl":"10.3390/dj10100184","url":null,"abstract":"<p><p>Dental caries remains the most prevalent oral disease worldwide. The development of dental caries is highly associated with the microbiota in the oral cavity. Microbiological research of dental caries has been conducted for over a century, with conventional culture-based methods and targeted molecular methods being used in order to identify the microorganisms related to dental caries. These methods' major limitation is that they can identify only part of the culturable microorganisms in the oral cavity. Introducing sequencing-based technology and bioinformatics analysis has boosted oral microbiome research and greatly expanded the understanding of complex oral microbiology. With the continuing revolution of molecular technologies and the accumulated sequence data of the oral microbiome, researchers have realized that microbial composition alone may be insufficient to uncover the relationship between caries and the microbiome. Most updated evidence has coupled metagenomics with transcriptomics and metabolomics techniques in order to comprehensively understand the microbial contribution to dental caries. Therefore, the objective of this article is to give an overview of the research of the oral microbiome and the development of dental caries. This article reviews the classical concepts of the microbiological aspect of dental caries and updates the knowledge of caries microbiology with the results of current studies on the oral microbiome. This paper also provides an update on the caries etiological theory, the microorganisms related to caries development, and the shifts in the microbiome in dental caries development.</p>","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":"26 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9601200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78297368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reinforcement Optimization Algorithm for Mobile Robot Sensor Networks Drive Motion Improvement 移动机器人传感器网络驱动运动改进的强化优化算法

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.30736

Suryaprakash Shanmugasundaram, Thirumoorthi Ponnusamy, Tamilarasu Viswanathan

引用次数: 0

Mathematical Analysis and Design of a Novel 5-DOF 3D Printer Robotic System 一种新型五自由度三维打印机机器人系统的数学分析与设计

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.31383

A. Dumlu, M. Mahboubkhah, K. K. Ayten, Gurkan Kalinay

引用次数: 0

Adaptive State Feedback Control Method Based on Recursive Least Squares 基于递推最小二乘的自适应状态反馈控制方法

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.31149

M. Levent, O. Aydogdu

{"title":"Adaptive State Feedback Control Method Based on Recursive Least Squares","authors":"M. Levent, O. Aydogdu","doi":"10.5755/j02.eie.31149","DOIUrl":"https://doi.org/10.5755/j02.eie.31149","url":null,"abstract":"This study revealed an adaptive state feedback control method based on recursive least squares (RLS) that is introduced for a time-varying system to work with high efficiency. Firstly, a system identification block was created that gives the mathematical model of the time-varying system using the input/output data packets of the controller system. Thanks to this block, the system is constantly monitored to update the parameters of the system, which change over time. Linear quadratic regulator (LQR) is renewed according to these updated parameters, and self-adjustment of the system is provided according to the changed system parameters. The Matlab/Simulink state-space model of the variable loaded servo (VLS) system module was obtained for the simulation experiments in this study; then the system was controlled. Moreover, experiments were carried out on the servo control experimental equipment of the virtual simulation laboratories (VSIMLABS). The effectiveness of the proposed new method was observed taking the performance indexes as a reference to obtain the results of the practical application of the proposed method. Regarding the analysis of simulation and experimental results, the proposed approach minimizes the load effect and noise and the system works at high efficiency.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43069436","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

Extraction of Cardiac Cell Membrane Fractional-Order Capacitance from Current Response to Voltage Step 从电流-电压阶跃响应中提取心脏细胞膜分数级电容

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.31151

D. Kubánek, J. Koton, O. Svecova

引用次数: 0

Analysis of Public Agenda during Covid-19 Pandemics Based on Turkish and English Tweets Using Nonnegative Matrix Factorization and Hypothesis Testing 基于土耳其和英语推文的新冠肺炎大流行期间公共议程的非负矩阵因子分析和假设检验

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.31196

Mustafa Yavaş, A. Guran, Y. Ekinci

{"title":"Analysis of Public Agenda during Covid-19 Pandemics Based on Turkish and English Tweets Using Nonnegative Matrix Factorization and Hypothesis Testing","authors":"Mustafa Yavaş, A. Guran, Y. Ekinci","doi":"10.5755/j02.eie.31196","DOIUrl":"https://doi.org/10.5755/j02.eie.31196","url":null,"abstract":"In this study, Turkish and English tweets through Twitter Application Program Interface (API) between 1-31 January 2021 are analyzed with respect to Covid-19. The collected tweets are preprocessed, labeled with the Vader Sentiment library, and then analyzed by topic modeling with Nonnegative Matrix Factorization. The analysis show that the most frequently mentioned word is “vaccine/aşı” after “Covid”. The topics modelled in the study are grouped into themes and the themes are seen to be similar in both languages, which means that the Turkish and world agenda are not very different in terms of themes in pandemics. Moreover, hypothesis tests are conducted to understand whether language and time period are related to sentiment class. The results show that the Turkish people are more neutral about the Covid-19 issue than other people in the world during the given period of time. Moreover, independent of the language, there are more negative and neutral tweets in the first half of January 2021, whereas there are more positive tweets in the second half of the month. To the best of our knowledge, this is the first study to analyze Covid-19 related tweets in two languages to compare the local and global agendas using topic modeling, sentiment analysis, and hypothesis testing methods.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43062221","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

Generalized Quasi-Orthogonal Functional Networks Applied in Parameter Sensitivity Analysis of Complex Dynamical Systems 广义拟正交函数网络在复杂动力系统参数灵敏度分析中的应用

IF 1.3 4区工程技术

Elektronika Ir Elektrotechnika Pub Date : 2022-08-24 DOI: 10.5755/j02.eie.31110

Saša S. Nikolić, D. Antić, Nikola B. Dankovic, Aleksandra A. Milovanovic, D. Mitic, Miroslav B. Milovanović, Petar S. Djekic

{"title":"Generalized Quasi-Orthogonal Functional Networks Applied in Parameter Sensitivity Analysis of Complex Dynamical Systems","authors":"Saša S. Nikolić, D. Antić, Nikola B. Dankovic, Aleksandra A. Milovanovic, D. Mitic, Miroslav B. Milovanović, Petar S. Djekic","doi":"10.5755/j02.eie.31110","DOIUrl":"https://doi.org/10.5755/j02.eie.31110","url":null,"abstract":"This paper presents one possible application of generalized quasi-orthogonal functional networks in the sensitivity analysis of complex dynamical systems. First, a new type of first order (k = 1) generalized quasi-orthogonal polynomials of Legendre type via classical quasi-orthogonal polynomials was introduced. The short principle to design generalized quasi-orthogonal polynomials and filters was also shown. A generalized quasi-orthogonal functional network represents an extension of classical orthogonal functional networks and neural networks, which deal with general functional models. A sequence of the first order (k = 1) generalized quasi-orthogonal polynomials was used as a new basis in the proposed generalized quasi-orthogonal functional networks. The proposed method for determining the parameter sensitivity of complex dynamical systems is also given, and an example of a complex industrial system in the form of a tower crane was considered. The results obtained have been compared with different methods for parameter sensitivity analysis.","PeriodicalId":51031,"journal":{"name":"Elektronika Ir Elektrotechnika","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47288916","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