Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130291
J. Makarovic, Jozef Beran, Miloslav Bůžek, M. Staňo
When optimizing designs of electromechanical actuators the fast development tools that enable one to calculate the magnetic field distribution are of high importance. They should provide reliable information about the performance indexes of the actuators. The created intermediate finite element tool is selected as a promising method anticipating short simulation time and adequate accuracy. The core of the approach is the magnetostatic finite-element method applied only to the simple-meshed air gap of the actuator with the Dirichlet, Neumann and open boundary conditions. The formulas for the elemental and boundary coefficients matrixes are stated; numerical results are presented and compared with high precision FE and experimental results.
{"title":"An intermediate finite element tool for static analysis and design of linear actuators","authors":"J. Makarovic, Jozef Beran, Miloslav Bůžek, M. Staňo","doi":"10.1109/ELEKTRO49696.2020.9130291","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130291","url":null,"abstract":"When optimizing designs of electromechanical actuators the fast development tools that enable one to calculate the magnetic field distribution are of high importance. They should provide reliable information about the performance indexes of the actuators. The created intermediate finite element tool is selected as a promising method anticipating short simulation time and adequate accuracy. The core of the approach is the magnetostatic finite-element method applied only to the simple-meshed air gap of the actuator with the Dirichlet, Neumann and open boundary conditions. The formulas for the elemental and boundary coefficients matrixes are stated; numerical results are presented and compared with high precision FE and experimental results.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116921142","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130362
Š. Hardoň, J. Kúdelčík
The influence of 0.5 wt% ZnO nanoparticles fillers in the epoxy resin on the development of the complex relative permittivity has been studied. Frequency dependences of the real and imaginary parts of complex relative permittivity were measured within the frequency ranges from 1 mHz to 1 MHz by the capacitance method. The development of the complex relative permittivity of the epoxy resin and nanocomposite were analyzed by the Cole-Cole model and its various parameters were determined at various temperatures. The α- and IDE- relaxation processes were observed at the temperature measurements
{"title":"Theoretical analyzation of the complex permittivity of epoxy resin with ZnO nanoparticles","authors":"Š. Hardoň, J. Kúdelčík","doi":"10.1109/ELEKTRO49696.2020.9130362","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130362","url":null,"abstract":"The influence of 0.5 wt% ZnO nanoparticles fillers in the epoxy resin on the development of the complex relative permittivity has been studied. Frequency dependences of the real and imaginary parts of complex relative permittivity were measured within the frequency ranges from 1 mHz to 1 MHz by the capacitance method. The development of the complex relative permittivity of the epoxy resin and nanocomposite were analyzed by the Cole-Cole model and its various parameters were determined at various temperatures. The α- and IDE- relaxation processes were observed at the temperature measurements","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127938139","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}
Pub Date : 2020-05-01DOI: 10.1109/elektro49696.2020.9130209
{"title":"Bandwidth Crunch, Challenges and Search for Solutions","authors":"","doi":"10.1109/elektro49696.2020.9130209","DOIUrl":"https://doi.org/10.1109/elektro49696.2020.9130209","url":null,"abstract":"","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133445181","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130218
M. Danko, P. Drgona, B. Hanko
To extend the driving range and increase the performance of electric vehicle one or multiple secondary energy storage are used. Using secondary energy storage also can reduce the weight and volume of main energy storage. For optimal control of energy flow of multiple energy, storages is necessarily known traction profile. If the traction profile is known, the control algorithm can decide when is use of energy of secondary energy storage useful. Proposed energy flow control algorithms for observation of traction profile use Global Positioning System.
{"title":"Optimization of power flow control in electric vehicle based on GPS","authors":"M. Danko, P. Drgona, B. Hanko","doi":"10.1109/ELEKTRO49696.2020.9130218","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130218","url":null,"abstract":"To extend the driving range and increase the performance of electric vehicle one or multiple secondary energy storage are used. Using secondary energy storage also can reduce the weight and volume of main energy storage. For optimal control of energy flow of multiple energy, storages is necessarily known traction profile. If the traction profile is known, the control algorithm can decide when is use of energy of secondary energy storage useful. Proposed energy flow control algorithms for observation of traction profile use Global Positioning System.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129869738","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130240
J. Ždánsky, K. Rástočný, Milan Medvedík
Two-channel sensor connection to safety PLC is one of the most widely used sensor connection methods used in industrial applications to perform safety functions. The level of safety integrity of the considered safety function is influenced not only by the hardware connection of the sensors, but also by the parametrization of the safety PLC input module. It is the influence of parameterization on the safety integrity of the considered safety function that is often neglected in practice, which may result in the occurrence of an unwelcome event. This issue is addressed in this post.
{"title":"Safety of Two-Channel Connection of Sensors to Safety PLC","authors":"J. Ždánsky, K. Rástočný, Milan Medvedík","doi":"10.1109/ELEKTRO49696.2020.9130240","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130240","url":null,"abstract":"Two-channel sensor connection to safety PLC is one of the most widely used sensor connection methods used in industrial applications to perform safety functions. The level of safety integrity of the considered safety function is influenced not only by the hardware connection of the sensors, but also by the parametrization of the safety PLC input module. It is the influence of parameterization on the safety integrity of the considered safety function that is often neglected in practice, which may result in the occurrence of an unwelcome event. This issue is addressed in this post.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114504475","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130251
B. Skala, V. Kindl, M. Byrtus, Eduard Pudil, Vaclav Longin, Zdenek Krelovec, Jiri Labadi
The paper describes the measurement of ovality of large induction machine rotor and the calculation of the air gap size along the rotor circumference. Also the withdrawal forces are calculated and the causes for its decline are discussed. The model is assembled and the influence of rotor ovality on the machine stator is described.
{"title":"Ovality and Tightening Force Analysis of Large Induction Machine Rotor","authors":"B. Skala, V. Kindl, M. Byrtus, Eduard Pudil, Vaclav Longin, Zdenek Krelovec, Jiri Labadi","doi":"10.1109/ELEKTRO49696.2020.9130251","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130251","url":null,"abstract":"The paper describes the measurement of ovality of large induction machine rotor and the calculation of the air gap size along the rotor circumference. Also the withdrawal forces are calculated and the causes for its decline are discussed. The model is assembled and the influence of rotor ovality on the machine stator is described.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114069061","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130649
Frantisek Jabloncík, L. Hargaš, D. Koniar, Jaroslav Bulava, Boucif Beddad
This article deals with the design of automated methods for the segmentation of ciliated epithelium in microscopic images. The proposed method is based on texture analysis of image and subsequent classification of these parameters into 3 classes: epithelial cells, cilia and background. The aim of the work is to find the best combination of initial conditions of segmentation. An output of the algorithm is an original microscopic image with highlighted regions assumed to be cilia.
{"title":"Ciliated epithelium segmentation using texture features classification","authors":"Frantisek Jabloncík, L. Hargaš, D. Koniar, Jaroslav Bulava, Boucif Beddad","doi":"10.1109/ELEKTRO49696.2020.9130649","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130649","url":null,"abstract":"This article deals with the design of automated methods for the segmentation of ciliated epithelium in microscopic images. The proposed method is based on texture analysis of image and subsequent classification of these parameters into 3 classes: epithelial cells, cilia and background. The aim of the work is to find the best combination of initial conditions of segmentation. An output of the algorithm is an original microscopic image with highlighted regions assumed to be cilia.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123785606","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}
Pub Date : 2020-05-01DOI: 10.1109/elektro49696.2020.9130324
{"title":"NANO – The Next Dimension","authors":"","doi":"10.1109/elektro49696.2020.9130324","DOIUrl":"https://doi.org/10.1109/elektro49696.2020.9130324","url":null,"abstract":"","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127787326","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130253
Dušan Nemec, Roman Michalík, M. Hruboš, V. Simák
Lithium cells (e.g. LiPol, LiFe, LiIon) are the root component of the power supply for mobile robots and electric vehicles. However, they are very sensitive to overvoltage and undervoltage. This article proposes a control system for balancing the voltage of the lithium cells during the charge and discharge of the accumulator. The proposed circuit including the control algorithm has been verified and optimized by simulation using MATLAB / Simulink environment.
{"title":"Control Strategy for Lithium Batteries Balancing Circuit","authors":"Dušan Nemec, Roman Michalík, M. Hruboš, V. Simák","doi":"10.1109/ELEKTRO49696.2020.9130253","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130253","url":null,"abstract":"Lithium cells (e.g. LiPol, LiFe, LiIon) are the root component of the power supply for mobile robots and electric vehicles. However, they are very sensitive to overvoltage and undervoltage. This article proposes a control system for balancing the voltage of the lithium cells during the charge and discharge of the accumulator. The proposed circuit including the control algorithm has been verified and optimized by simulation using MATLAB / Simulink environment.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121316841","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130210
O. Krejcar, P. Marešová, P. Brida, Sabina Baraković, J. Husić, K. Kuča, A. Selamat
The need for the exact overview of technology, which is the target for some purposes is often very crucial. Patent databases provide nowadays very suitable source of data and information which can be further analyzed. Global overview is thus possible to provide for any kind of technology. Smart Furniture is a very used term recently, which is related to current trends such as digitization, smart city or internet of things. Within these phenomena, Smart Furniture is used in different contexts, and so its concept is not clarified. The aim of the article is to show the technology analysis of Smart Furniture based on the patent data analysis and literature analysis by clustering and visualization. The definition of Smart Furniture was recently provided in literature based on previous research which was undertaken based on searching in scientific and patent databases. Thus, the term is defined by its technical properties and parameters. This definition is put into the context of actual trends of patents content with selected future trends. A patent analysis was undertaken between 20 October 2019 and 09 November 2019, while the Web of Science database was included, which was searched by keywords that included the phrase "Smart Furniture" and variants. Patent searching was performed in the PatentInspiration database. In total 31 articles from scientific database and 491 patent applications were examined against strict criteria containing meaningful definitions of Smart Furniture. Based on the analysis of key technologies and properties, clustering of results and their further analysis, it was found that the concept of smart furniture is specific to the following components: intelligent system, controller operated with user's data and energy sources, sensors and actuators.
对技术的确切概述(这是某些目的的目标)的需求通常是非常关键的。目前，专利数据库为进一步分析提供了非常合适的数据和信息来源。因此，全球概览可以提供任何类型的技术。智能家具是最近非常常用的一个术语，它与当前的趋势有关，如数字化，智慧城市或物联网。在这些现象中，智能家具是在不同的语境中使用的，所以它的概念并不明确。本文的目的是在专利数据分析和文献分析的基础上，通过聚类和可视化的方法来展示智能家具的技术分析。智能家具的定义是最近在文献中根据先前的研究提供的，这些研究是基于在科学和专利数据库中进行的搜索。因此，该术语是由其技术特性和参数来定义的。这一定义被置于专利内容的实际趋势与选定的未来趋势的背景下。在2019年10月20日至2019年11月9日期间进行了专利分析，同时纳入了Web of Science数据库，并通过包括“智能家具”及其变体在内的关键词进行了搜索。在PatentInspiration数据库中进行专利检索。根据包含智能家具有意义定义的严格标准，对科学数据库中的31篇文章和491项专利申请进行了审查。通过对关键技术和特性的分析、对结果的聚类和进一步分析，发现智能家具的概念具体到以下几个组成部分:智能系统、用户数据和能源操作的控制器、传感器和执行器。
{"title":"Technology Analysis of Global Smart Furniture Development Using Patent Data","authors":"O. Krejcar, P. Marešová, P. Brida, Sabina Baraković, J. Husić, K. Kuča, A. Selamat","doi":"10.1109/ELEKTRO49696.2020.9130210","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130210","url":null,"abstract":"The need for the exact overview of technology, which is the target for some purposes is often very crucial. Patent databases provide nowadays very suitable source of data and information which can be further analyzed. Global overview is thus possible to provide for any kind of technology. Smart Furniture is a very used term recently, which is related to current trends such as digitization, smart city or internet of things. Within these phenomena, Smart Furniture is used in different contexts, and so its concept is not clarified. The aim of the article is to show the technology analysis of Smart Furniture based on the patent data analysis and literature analysis by clustering and visualization. The definition of Smart Furniture was recently provided in literature based on previous research which was undertaken based on searching in scientific and patent databases. Thus, the term is defined by its technical properties and parameters. This definition is put into the context of actual trends of patents content with selected future trends. A patent analysis was undertaken between 20 October 2019 and 09 November 2019, while the Web of Science database was included, which was searched by keywords that included the phrase \"Smart Furniture\" and variants. Patent searching was performed in the PatentInspiration database. In total 31 articles from scientific database and 491 patent applications were examined against strict criteria containing meaningful definitions of Smart Furniture. Based on the analysis of key technologies and properties, clustering of results and their further analysis, it was found that the concept of smart furniture is specific to the following components: intelligent system, controller operated with user's data and energy sources, sensors and actuators.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115928699","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}
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