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Initial Analysis of Multi Active Bridge Converter 多有源桥式变换器的初步分析
Acta Electrotechnica et Informatica Pub Date : 2023-06-01 DOI: 10.2478/aei-2023-0007
Adrian Marcinek, M. Pastor
{"title":"Initial Analysis of Multi Active Bridge Converter","authors":"Adrian Marcinek, M. Pastor","doi":"10.2478/aei-2023-0007","DOIUrl":"https://doi.org/10.2478/aei-2023-0007","url":null,"abstract":"Abstract This paper introduces a design of a modular multiport converter, employing active bridges. The design incorporates a modular structure, and the paper begins by conducting steady state analyses to evaluate the converter’s characteristics. Subsequently, a RMS current equation, average current equation and power distribution equation are derived. From these equations is derived equation for delay of specific port. Lastly, a multi active bridge described in this way is verified by simulation.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"13 - 18"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42478592","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 Tag-Based Solution for Safer Parallel STL Usage 基于标签的更安全的并行STL使用解决方案
Acta Electrotechnica et Informatica Pub Date : 2023-06-01 DOI: 10.2478/aei-2023-0008
Benjámin Barth, Richárd Szalay, Z. Porkoláb
{"title":"A Tag-Based Solution for Safer Parallel STL Usage","authors":"Benjámin Barth, Richárd Szalay, Z. Porkoláb","doi":"10.2478/aei-2023-0008","DOIUrl":"https://doi.org/10.2478/aei-2023-0008","url":null,"abstract":"Abstract The continuous evolution of programming languages creates a challenge not only for the compiler implementers but also for the regular developers. The C++17 standard introduced the Parallel STL library, a parallel extension of the original and fundamental Standard Template Library (STL) with the promise to achieve safe, efficient, and scalable parallel programming in an easy way. While the syntax remained familiar, the new parallel algorithms introduced additional requirements, which are often ignored even by experienced programmers. In this paper, we investigate the root cause of the misuse of the Parallel STL. We carried out a classroom experiment to measure the programmers’ behaviour when programming using the Parallel STL and found that the major issue is not that their code would be erroneous, but the lack of awareness of the semantic requirements of parallel functors. While a fully automatic detection of erroneous constructs is computationally infeasible to achieve, we introduce a framework with which the developer will be able to indicate – axiomatically, based on absolute trust – that an operation has “safe” properties required by the algorithms. We implemented a prototype of the proposed framework to demonstrate its usability and effectiveness.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"19 - 27"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47881478","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 Prototype of a Domain-Specific Modeling Language for Formal Specification of a Human Worker 用于人类工作者形式化规范的领域特定建模语言的原型
Acta Electrotechnica et Informatica Pub Date : 2023-06-01 DOI: 10.2478/aei-2023-0010
Dajana Antanasijević, S. Ristić, Marko Vještica, Darko Stefanović, Vladimir Dimitrieski, M. Pisarić
{"title":"A Prototype of a Domain-Specific Modeling Language for Formal Specification of a Human Worker","authors":"Dajana Antanasijević, S. Ristić, Marko Vještica, Darko Stefanović, Vladimir Dimitrieski, M. Pisarić","doi":"10.2478/aei-2023-0010","DOIUrl":"https://doi.org/10.2478/aei-2023-0010","url":null,"abstract":"Abstract The application of innovative technologies that foster smart production resources’ interconnectivity alongside the virtual space that facilities to support process simulation makes the technology factor become the center of Industry 4.0. The production process modeling and simulation can be used to facilitate flexibility and automation of a shop floor. In our previous research, we have created a Domain-Specific Modeling Language (DSML) named MultiProLan, aiming to create production process models suitable for the automatic generation of executable code that enables the automatic execution of production processes. As the next step, we have proposed research on a DSML language aimed at Industry 4.0 human worker modeling. Industry 4.0 still considers workers as a cost, while favoring technological aspects over the workers’ wellbeing. Industry 5.0 complements Industry 4.0, focusing on a human-centric approach that puts core human needs and interests at the top of production processes. Based on our research proposal, here we present a blueprint of the HResModLan DSML prototype aimed at the formal specification of a human worker within Industry 5.0. Presented abstract and concrete syntaxes of the language are tested on a case study of a furniture factory to demonstrate whether they are a good base for the further development of the HResModLan language.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"33 - 40"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48229731","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
IoT Anomaly Detection with 1D CNN Using P4 Capabilities 使用P4功能的1D CNN物联网异常检测
Acta Electrotechnica et Informatica Pub Date : 2023-06-01 DOI: 10.2478/aei-2023-0006
Gereltsetseg Altangerel, M. Tejfel, Enkhtur Tsogbaatar
{"title":"IoT Anomaly Detection with 1D CNN Using P4 Capabilities","authors":"Gereltsetseg Altangerel, M. Tejfel, Enkhtur Tsogbaatar","doi":"10.2478/aei-2023-0006","DOIUrl":"https://doi.org/10.2478/aei-2023-0006","url":null,"abstract":"Abstract Although the Internet of Things (IoT) is a rapidly developing technology, it also brings a number of security challenges, such as IoT attacks. Currently, research on IoT anomaly detection in Software-Defined Networking (SDN) relies only on the control plane. In this study, we aim to detect IoT anomalies by covering the advantages of the control and data plane. First, we collected real-time network telemetry data from the data plane based on the capabilities of the P4. Then, using this telemetry data, we built different anomaly detection models and compared their performance. Among them, the one-Dimensional Convolutional Neural Network (1D CNN) model classified our data best and showed the highest performance, so we proposed this model for IoT anomaly detection on the control plane. To our knowledge, our approach is the first solution that integrates the control plane and data plane for IoT anomaly detection. Finally, when evaluating the performance of our proposed 1D CNN model, the accuracy, F1 score, and Matthews correlation coefficient (MCC) are the same or better than existing studies.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"3 - 12"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47639872","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
The Influence of Climatic Conditions on the Dynamic Ampacity of Overhead Power Lines 气候条件对架空电力线路动态容量的影响
Acta Electrotechnica et Informatica Pub Date : 2023-06-01 DOI: 10.2478/aei-2023-0009
L. Beňa, M. Kolcun, Riki Tailor
{"title":"The Influence of Climatic Conditions on the Dynamic Ampacity of Overhead Power Lines","authors":"L. Beňa, M. Kolcun, Riki Tailor","doi":"10.2478/aei-2023-0009","DOIUrl":"https://doi.org/10.2478/aei-2023-0009","url":null,"abstract":"Abstract The constantly growing demand for electricity demands both on the installed power of energy sources and on the transmission capabilities of electrical networks. Considering the fact that increasing the transmission capabilities of electrical networks by building new lines is a time and financially demanding process, network operators strive to use the transmission capacities of existing lines as much as possible. One of the possibilities of this maximum use of existing capacities is the application of the calculation of the dynamic ampacity of the lines, when the operators of electric networks know how to determine the maximum load capacity of the lines depending on the current climatic conditions. The presented publication presents a methodology for determining the dynamic ampacity of overhead power lines under different climatic conditions with the subsequent application of this methodology to a specific conductor used in the implementation of overhead transmission lines.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"28 - 32"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46363438","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
Hydraulic Turbine Modelling Including a Fuzzy Model of Efficiency 包含效率模糊模型的水轮机建模
Acta Electrotechnica et Informatica Pub Date : 2023-03-01 DOI: 10.2478/aei-2023-0004
D. Perduková, P. Fedor, Marek Fedor
{"title":"Hydraulic Turbine Modelling Including a Fuzzy Model of Efficiency","authors":"D. Perduková, P. Fedor, Marek Fedor","doi":"10.2478/aei-2023-0004","DOIUrl":"https://doi.org/10.2478/aei-2023-0004","url":null,"abstract":"Abstract The hydraulic turbine is considered as a heart of the hydropower plant because of its important function in the whole process of electrical energy production. Turbine´s efficiency calculation is analytically demanding and dependent on parameters that are often obtained only by a theoretical estimation. Therefore, using its accurate model, which takes into account its efficiency, is necessary to achieve realistic and relevant results. The article briefly surveys current knowledge and methods of designing the hydraulic turbine model. The new idea consists in that a fuzzy system was used to create turbine´s efficiency model based on a measured operating data of the turbine flow rate and its mechanical speed without any need of knowing exactly the turbine parameters. Such a model can be used in the design and development process of an optimal energy control of a hydraulic turbine, as well as in the effective process of determination the actual turbine’s wear rate. The achieved results were obtained using the computational tools of the Fuzzy Toolbox in the MATLAB.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"25 - 31"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44794191","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
Design and Evaluation of a Magnetoelastic Tensile Force Sensor 一种磁弹性拉力传感器的设计与评价
Acta Electrotechnica et Informatica Pub Date : 2023-03-01 DOI: 10.2478/aei-2023-0002
Š. Gans, J. Molnár
{"title":"Design and Evaluation of a Magnetoelastic Tensile Force Sensor","authors":"Š. Gans, J. Molnár","doi":"10.2478/aei-2023-0002","DOIUrl":"https://doi.org/10.2478/aei-2023-0002","url":null,"abstract":"Abstract This paper introduces the basic theory behind magnetoelastic sensors which are based on the change of magnetic properties (permeability) due to mechanical stress (Villari effect). A well-known magnetoelastic sensor, the Pressductor, is described. A simulation model of a sensor is created, described, and evaluated by computing the static transfer characteristic of RMS secondary coil voltage change due to tensile stress. A real sensor is then manufactured from a polycrystalline transformer sheet and experimentally tested by using a tensile load created by water weight. The simulation and experiment show similar behavior but are not completely identical which is most likely since some material properties were taken from literature rather than from experimental measurements, like the magnetostriction coefficient and initial magnetic susceptibility.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"11 - 17"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46655301","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
3D Mapping with a Drone Equipped with a Depth Camera in Indoor Environment 在室内环境中使用配备深度相机的无人机进行3D测绘
Acta Electrotechnica et Informatica Pub Date : 2023-03-01 DOI: 10.2478/aei-2023-0003
Stanislav Alexovič, Milan Lacko, Ján Bačík
{"title":"3D Mapping with a Drone Equipped with a Depth Camera in Indoor Environment","authors":"Stanislav Alexovič, Milan Lacko, Ján Bačík","doi":"10.2478/aei-2023-0003","DOIUrl":"https://doi.org/10.2478/aei-2023-0003","url":null,"abstract":"Abstract This paper presents a quadrotor drone designed for the 3D reconstruction of indoor environments using a depth camera and a tracking camera. The drone’s hardware and software components are described, including the Holybro X500V2 kit, the Intel RealSense T265 tracking camera, and the Intel RealSense D435i depth camera. The paper outlines the process of building a complete TF tree, capturing point clouds with RtabMap, and streaming video. The drone’s pose stabilization and successful test flight in an indoor environment are also discussed, including its ability to navigate through indoor spaces and provide accurate data for 3D reconstruction. The paper concludes with recommendations for future development, such as autonomous navigation and exploration of unknown areas. The results demonstrate the feasibility and potential of this drone for creating detailed and comprehensive maps of indoor environments.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"18 - 24"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44646061","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
Advanced Prototype of Manus Diagnostics and Rehabilitation Device 手部诊断和康复设备的先进原型
Acta Electrotechnica et Informatica Pub Date : 2023-03-01 DOI: 10.2478/aei-2023-0005
Stanislav Husár, M. Bundzel, Maroš Hliboký, Slavomír Kardoš, Norbert Ferenčík
{"title":"Advanced Prototype of Manus Diagnostics and Rehabilitation Device","authors":"Stanislav Husár, M. Bundzel, Maroš Hliboký, Slavomír Kardoš, Norbert Ferenčík","doi":"10.2478/aei-2023-0005","DOIUrl":"https://doi.org/10.2478/aei-2023-0005","url":null,"abstract":"Abstract Hand fine motor functions may be impaired by various conditions, from injury to neurodegenerative diseases. Previously, we developed a prototype called Rehapiano that used load cells to measure the force exerted by the individual fingers. Rehapiano could distinguish between Parkinson’s patients and healthy individuals by analysing the finger tremors. Based on the experiences with the prototype and consultations with experts, we developed a more advanced prototype, Rehabimano. We show here how we improved the ergonomics and electronics. In addition, we have performed experimental validation of the device and confirmed its ability to detect and measure frequencies of tremors. These results are a stepping stone for consecutive software development and pre-clinical trials.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"32 - 40"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42394986","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 Study on the Effectiveness of Agile Methodology Using a Dataset 基于数据集的敏捷方法有效性研究
Acta Electrotechnica et Informatica Pub Date : 2023-03-01 DOI: 10.2478/aei-2023-0001
E.M.M. Alzeyani, C. Szabó
{"title":"A Study on the Effectiveness of Agile Methodology Using a Dataset","authors":"E.M.M. Alzeyani, C. Szabó","doi":"10.2478/aei-2023-0001","DOIUrl":"https://doi.org/10.2478/aei-2023-0001","url":null,"abstract":"Abstract There are many methodologies that we can follow in software projects, including the traditional methods, at the forefront of which it was effective and with a good result, but with the constant increase in requirements resulting from the continuous and rapid development in science and technology and digital transformation; Traditional, highly structured project management methods lack flexibility, awareness of change, adaptability to it, and independence; It led to developing this methodology into an Agile methodology in the form it is currently known, which contributed to developing the team’s skills and knowledge. Our focus in this paper is a study on a data set affiliated with the Agile methodology by measuring effort using one of the well-known methods, monitoring the actual time and comparing it with the expected time to deliver a specific work, and also identifying the difficulties they face while working in different environments to build a comprehensive picture of the benefits and advantages of the Agile methodology.","PeriodicalId":31657,"journal":{"name":"Acta Electrotechnica et Informatica","volume":"23 1","pages":"3 - 10"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42210319","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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