Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130252
A. Ivutin, A. Voloshko, Viktor N. Izotov
One of the most common and poorly detectable errors in parallel algorithms is data race condition. The article proposes an approach to detecting such states of data races based on simulation of a program using the mathematical apparatus of Petri nets with additional semantic relations. Based on chains of semantic relations between places belonging to different parallel threads, memory allocation places and other intermediate places, it is possible to detect data races associated with incorrect organization of access to a shared resource.
{"title":"Approach to Data Race Detection Based on Petri Nets with Additional Semantic Relations","authors":"A. Ivutin, A. Voloshko, Viktor N. Izotov","doi":"10.1109/ELEKTRO49696.2020.9130252","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130252","url":null,"abstract":"One of the most common and poorly detectable errors in parallel algorithms is data race condition. The article proposes an approach to detecting such states of data races based on simulation of a program using the mathematical apparatus of Petri nets with additional semantic relations. Based on chains of semantic relations between places belonging to different parallel threads, memory allocation places and other intermediate places, it is possible to detect data races associated with incorrect organization of access to a shared resource.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"57 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":"126268805","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/ELEKTRO49696.2020.9130363
S. Micari, S. Foti, A. Testa, S. de Caro, F. Sergi, L. Andaloro, D. Aloisio, G. Napoli
The development of Lithium-ion batteries for electric vehicles have recently become the subject of large research efforts due to some remarkable advantages over other kinds of batteries, such as: high energy density, high power density, long cycle life and long calendar life. This paper is aimed to develop an ageing model suitable to estimate the battery lifetime, the residual capacity and reliability margins under different driving cycles, taking also into account the battery calendar ageing.
{"title":"Prediction of Ageing Effects on Lithium-Ion Battery for Electric Vehicles","authors":"S. Micari, S. Foti, A. Testa, S. de Caro, F. Sergi, L. Andaloro, D. Aloisio, G. Napoli","doi":"10.1109/ELEKTRO49696.2020.9130363","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130363","url":null,"abstract":"The development of Lithium-ion batteries for electric vehicles have recently become the subject of large research efforts due to some remarkable advantages over other kinds of batteries, such as: high energy density, high power density, long cycle life and long calendar life. This paper is aimed to develop an ageing model suitable to estimate the battery lifetime, the residual capacity and reliability margins under different driving cycles, taking also into account the battery calendar ageing.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"31 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":"124853619","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/ELEKTRO49696.2020.9130362
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/ELEKTRO49696.2020.9130218
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/ELEKTRO49696.2020.9130253
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/ELEKTRO49696.2020.9130272
M. Benco, P. Kamencay, R. Hudec, M. Radilova, P. Sykora
Texture and colour are very important elements in image analysis. This article provides advanced research on the rapid acquisition and classification of coloured textures. In our research we use the principle of Grey Level Co-occurrence Matrix (GLCM) and its modifications. The main idea was to propose a method to describe the combined elements, precisely colours and textures. This work consists of our previous research on the Colour-level co-occurrence matrices (CLCM). The CLCM method is modified by a one-dimensional GLCM approach. The texture classification process is performed using a robust vector machine auxiliary classifier. We also conducted several experiments with convolutional neural networks (CNN) with 15 layers and AlexNet with 25 layers. Finally, all evaluations and comparisons of the colour texture acquisition results for all methods used are given. All algorithms were tested on two different known colour texture databases (Outex and Vistex databases).
{"title":"Image Texture Analysis based on Color Level Methods using Neural Network","authors":"M. Benco, P. Kamencay, R. Hudec, M. Radilova, P. Sykora","doi":"10.1109/ELEKTRO49696.2020.9130272","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130272","url":null,"abstract":"Texture and colour are very important elements in image analysis. This article provides advanced research on the rapid acquisition and classification of coloured textures. In our research we use the principle of Grey Level Co-occurrence Matrix (GLCM) and its modifications. The main idea was to propose a method to describe the combined elements, precisely colours and textures. This work consists of our previous research on the Colour-level co-occurrence matrices (CLCM). The CLCM method is modified by a one-dimensional GLCM approach. The texture classification process is performed using a robust vector machine auxiliary classifier. We also conducted several experiments with convolutional neural networks (CNN) with 15 layers and AlexNet with 25 layers. Finally, all evaluations and comparisons of the colour texture acquisition results for all methods used are given. All algorithms were tested on two different known colour texture databases (Outex and Vistex databases).","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"54 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":"128887732","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/ELEKTRO49696.2020.9130354
M. Kováčik, M. Pospíšil
This article defines solution of electric multiple unit designed optimally for traffic, service and technical conditions of Tatra electric railway. Basic concept of electric multiple unit is determined and analyzed, using mathematical methods recommended in literature for traction analysis. Design of electric multiple unit and it´s components are selected according to nowaday trends. Calculated design parameters are further analyzed by simulation of traction dynamics. Results of simulation are presumption of power consumption requirements of designed electric multiple unit.
{"title":"Design of electric multiple unit for Tatra electric railway","authors":"M. Kováčik, M. Pospíšil","doi":"10.1109/ELEKTRO49696.2020.9130354","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130354","url":null,"abstract":"This article defines solution of electric multiple unit designed optimally for traffic, service and technical conditions of Tatra electric railway. Basic concept of electric multiple unit is determined and analyzed, using mathematical methods recommended in literature for traction analysis. Design of electric multiple unit and it´s components are selected according to nowaday trends. Calculated design parameters are further analyzed by simulation of traction dynamics. Results of simulation are presumption of power consumption requirements of designed electric multiple unit.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"90 4 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":"128373255","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}
Pub Date : 2020-05-01DOI: 10.1109/ELEKTRO49696.2020.9130357
P. Nemec, M. Malcho, M. Poláĉiková, J. Jandačka
At present, a great accent is placed on the right method of heat dissipation and waste heat recovery. The research work deals with the removal of heat from the internal space of the electrical box. Waste heat generated by the operation of electrical equipment is undesirable for their proper function. The research is focused mainly on the dissipation of Joule’s heat and its use is subject to further investigation. The first part describes various methods of cooling electrical boxes and the second part describes our specific method of cooling for electrical boxes. The investigated cooling system operates on the principle of a gravity loop thermosiphon. This type of cooling is an energy and structurally simple method because it is based on a phase change of the working substance. Another advantage is the removal of waste heat without contamination of the interior by external dirt and dust. The work results were obtained experimental on the measuring device. The measurements were performed at different heat loads and at different amounts of working substance in the cooling system. The measurement results evaluation and their comparison provide relevant data about the cooling capacity of the cooling system and indicate which working substance volume is effective at various heat load at the same time.
{"title":"Heat Dissipation from Power Electronic Components and Electrical Enclosures Using the Gravity Loop Heat Pipe","authors":"P. Nemec, M. Malcho, M. Poláĉiková, J. Jandačka","doi":"10.1109/ELEKTRO49696.2020.9130357","DOIUrl":"https://doi.org/10.1109/ELEKTRO49696.2020.9130357","url":null,"abstract":"At present, a great accent is placed on the right method of heat dissipation and waste heat recovery. The research work deals with the removal of heat from the internal space of the electrical box. Waste heat generated by the operation of electrical equipment is undesirable for their proper function. The research is focused mainly on the dissipation of Joule’s heat and its use is subject to further investigation. The first part describes various methods of cooling electrical boxes and the second part describes our specific method of cooling for electrical boxes. The investigated cooling system operates on the principle of a gravity loop thermosiphon. This type of cooling is an energy and structurally simple method because it is based on a phase change of the working substance. Another advantage is the removal of waste heat without contamination of the interior by external dirt and dust. The work results were obtained experimental on the measuring device. The measurements were performed at different heat loads and at different amounts of working substance in the cooling system. The measurement results evaluation and their comparison provide relevant data about the cooling capacity of the cooling system and indicate which working substance volume is effective at various heat load at the same time.","PeriodicalId":165069,"journal":{"name":"2020 ELEKTRO","volume":"23 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":"121495643","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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