Engineering Proceedings最新文献_第4页

Optimizing MAG Welding Input Variables to Maximize Penetration Depth Using Particle Swarm Optimization Algorithm 利用粒子群算法优化MAG焊接输入变量以达到最大熔深

Engineering Proceedings Pub Date : 2022-01-25 DOI: 10.3390/engproc2022014005

Mohamed Mezaache, O. Benaouda, S. Chaouch, B. Babes, R. Amraoui

引用次数: 0

Frequency Control System Effectiveness in a Combined Cycle Gas Turbine Plant 联合循环燃气轮机装置频率控制系统的有效性

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2022014001

D. Talah, H. Bentarzi

引用次数: 0

Crop Water Availability Mapping in the Danube Basin Based on Deep Learning, Hydrological and Crop Growth Modelling 基于深度学习、水文和作物生长模型的多瑙河流域作物水分有效性制图

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2021009042

S. Migdall, Sandra Dotzler, Eva Gleisberg, F. Appel, M. Muerth, H. Bach, Giulio Weikmann, C. Paris, D. Marinelli, L. Bruzzone

引用次数: 4

Hilbert Fractal PIFA Antenna for DCS, PCS, UMTS and WiMAX Wireless Applications 希尔伯特分形PIFA天线用于DCS, pc, UMTS和WiMAX无线应用

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2022014002

Youssouf Zemam, Noureddine Boukli Hacene, Y. Belhadef

{"title":"Hilbert Fractal PIFA Antenna for DCS, PCS, UMTS and WiMAX Wireless Applications","authors":"Youssouf Zemam, Noureddine Boukli Hacene, Y. Belhadef","doi":"10.3390/engproc2022014002","DOIUrl":"https://doi.org/10.3390/engproc2022014002","url":null,"abstract":"In this article, a novel quad-band fractal PIFA antenna design for DCS, PCS, UMTS, and WiMAX wireless communications systems is presented. The proposed antenna is a PIFA antenna where a slot having a Hilbert fractal shape at the third iteration has been inserted at the center of the radiating patch. The fractal shape of the implanted slot on the PIFA antenna was used in order to make the antenna operational at four frequency bands, according the required applications. The proposed antenna with the fractal shape of the slot offers quad-band operation with a miniaturized size compared to the initial PIFA antenna, such that the dimensions of the radiating patch become equal to 28 mm × 28 mm. This structure is operational in the following frequency bands: (1.73–2.08) GHz, (2.46–2.59) GHz, (3.39–3.47) GHz, and the band (4.56–5.02) GHz covering DCS, PCS, UMTS, and WiMAX mobile communications systems, respectively, with a gain ranging from 2 dB to 6 dB at the desired frequency bands. The fractal PIFA antenna design was carried out under CST MWs software with validation of the results made using HFSS software. There is good agreement between the obtained results by the two simulation software.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77779930","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

Awareness Raising and Capacity Building through a Scalable Automatic Water Harvest Monitoring System to Improve Water Resource Management in Monteverde Community, Costa Rica 通过可扩展的自动取水监测系统提高认识和能力建设，改善哥斯达黎加蒙特韦德社区的水资源管理

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2021009045

Roberto Brenes, A. Torres, J. Aguilar, R. Aguilar

引用次数: 1

Evaluation of the Sequencing and Merging Procedures at Three European Airports Using Opensky Data 使用Opensky数据对三个欧洲机场的排序和合并程序进行评估

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2021013013

Henrik Hardell, Anastasia Lemetti, Tatiana Polishchuk, Lucie Smetanová

引用次数: 7

Sub-Synchronous Torsional Interaction Study and Mitigation Using a Synchro-Phasors Measurement Unit 使用同步相量测量单元的次同步扭转相互作用研究和缓解

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2022014008

M. Tsebia, H. Bentarzi

{"title":"Sub-Synchronous Torsional Interaction Study and Mitigation Using a Synchro-Phasors Measurement Unit","authors":"M. Tsebia, H. Bentarzi","doi":"10.3390/engproc2022014008","DOIUrl":"https://doi.org/10.3390/engproc2022014008","url":null,"abstract":"In a power plant, sub-synchronous resonance is not encountered very often, but when it occurs, it can cause a very serious problem and severe damage. Many efforts have been investigated to study and hence mitigate a resonance produced between electrical synchronous machines and the electrical grid that may arise for frequencies other than the fundamental one (50 Hz). Natural resonances in the electrical grid incorporating series capacitors can appear for sub-synchronous frequencies and can be both a series and parallel resonance nature. Mitigation techniques are required for a power plant with an extensive turbine-generator string located near a long power transmission line with series capacitors. Due to the severe consequences, power plants that risk sub-synchronous resonance (SSR) may be equipped with appropriate protection. However, if the sub-synchronous resonance frequencies of the network coincide with any of the mechanical frequencies of the turbine-generator shaft, torsional interaction that is called sub-synchronous torsional interaction (SSTI). If the electrical damping for a specific frequency in the network is insufficient or negative in comparison to mechanical damping, it may lead to this sub-synchronous torsional interaction. This phenomenon can be hazardous causing fatigue in the turbine-generator shaft, which results in the failure of the power generation unit. It can also occur due to the interaction between a control system of converters and the turbine generators. In this research paper, a study using different methods of analysis developed by transmission system operators (TSOs) and the manufacturers with one case study is presented. Additionally, different mitigation techniques, such as filtering and damping, are suggested. Furthermore, a demonstration for measuring principles as well as monitoring and protection against SSTI using a synchro-phasors measurement unit has been presented.","PeriodicalId":11748,"journal":{"name":"Engineering Proceedings","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76089339","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

Backstepping Control of Drone 无人机的后退控制

Engineering Proceedings Pub Date : 2022-01-24 DOI: 10.3390/engproc2022014004

A. Saibi, R. Boushaki, Hadjira Belaidi

引用次数: 6

Conceptual Framework to Integrate Economic Drivers of Decision Making for Technology Adoption in Agriculture 整合农业技术采用决策经济驱动因素的概念框架

Engineering Proceedings Pub Date : 2022-01-23 DOI: 10.3390/engproc2021009043

T. L. Romanelli, F. Muñoz-Arriola, A. Colaço

引用次数: 2

Aircraft Localization Using ATC Data with Nanosecond Precision from Distributed Crowdsourced Receivers 利用来自分布式众包接收器的纳秒精度的ATC数据进行飞机定位

Engineering Proceedings Pub Date : 2022-01-21 DOI: 10.3390/engproc2021013012

S. Markochev

引用次数: 1