IEEE Latin America Transactions最新文献_第7页

Assessment of Solar Irradiation Data Sources and Prediction Models for Rural Villages in the Colombian Amazon Region 哥伦比亚亚马逊地区农村太阳辐照数据源评价与预报模型

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789635

Luis Eduardo Ordoñez Palacios;Víctor Andrés Bucheli Guerrero;Eduardo Francisco Caicedo Bravo

{"title":"Assessment of Solar Irradiation Data Sources and Prediction Models for Rural Villages in the Colombian Amazon Region","authors":"Luis Eduardo Ordoñez Palacios;Víctor Andrés Bucheli Guerrero;Eduardo Francisco Caicedo Bravo","doi":"10.1109/TLA.2024.10789635","DOIUrl":"https://doi.org/10.1109/TLA.2024.10789635","url":null,"abstract":"Despite global efforts to adopt renewable energy, many remote regions still lack reliable electrical services. Addressing this requires a thorough analysis of solar resource data to identify viable solutions for these underserved areas. We evaluate the error in solar radiation data from a satellite image-based Random Forest (satellite RF) model by using data from IDEAM meteorological stations and NASA sources. By rigorously comparing these datasets, we aim to assess the reliability of predictive sources of solar radiation in the Amazon region. The results help establish confidence in various data sources, essential for utilizing estimated solar energy data in renewable energy research. We compared the data using the Relative Root Mean Squared Error (Relative RMSE). On the one hand, the relative RMSE between NASA and IDEAM ranges from 6.86% to 20.93%. On the other hand, the error between satellite RF model and IDEAM fluctuates between 6.56% and 12.33%. Similarly, the error between satellite RF model and NASA ranges from 4.80% to 15.27%. The findings indicate that the error in NASA data is higher compared to the error in satellite RF model data when benchmarked against IDEAM. Despite the limited number of meteorological stations and a maximum error of 20.93% between the two predictive data sources compared to ground-based observed data, we consider it reliable to use estimated solar radiation data for developing effective renewable energy solutions in remote locations.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 12","pages":"1019-1025"},"PeriodicalIF":1.3,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10789635","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810353","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

Mobility Deficit Identification and Compensation through an Artificial Neural Network and Adaptive Controller Design during Gait 基于人工神经网络和自适应控制器设计的步态运动缺陷识别与补偿

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789627

Silvia Liliana Chaparro Cárdenas;Eduardo Castillo-Castañeda;Alejandro Alfredo Lozano-Guzmán

{"title":"Mobility Deficit Identification and Compensation through an Artificial Neural Network and Adaptive Controller Design during Gait","authors":"Silvia Liliana Chaparro Cárdenas;Eduardo Castillo-Castañeda;Alejandro Alfredo Lozano-Guzmán","doi":"10.1109/TLA.2024.10789627","DOIUrl":"https://doi.org/10.1109/TLA.2024.10789627","url":null,"abstract":"This article presents a progressive compensation strategy for gait recovery in patients with different degrees of limited knee mobility, based on angular analysis and muscle electrical activity, and artificial intelligence. Ten subjects were tested during gait on a flat surface simulating 4 conditions of limited knee mobility with an active knee brace. Data on the amplitude of the electrical signal from 3 leg muscles were analyzed: rectus femoris, tibialis anterior, and gastrocnemius. In addition to the electromyography sensors, an angular position sensor was placed on the knee joint. An artificial neural network was trained to identify the type of limitation of each patient in their muscle activity. A knee orthosis with a linear actuator was designed to compensate for the loss of force during knee flexion-extension movement, according with limiting condition. The actuator trajectory is controlled through a model reference adaptive controller with a fuzzy logic-based adaptation mechanism. The simulation demonstrates the efficiency of this strategy, despite the high-amplitude disturbances in the system.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 12","pages":"1063-1072"},"PeriodicalIF":1.3,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10789627","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810349","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

Coexistence Study for the 2300-2400MHz IMT band in Colombia 哥伦比亚2300-2400MHz IMT频段共存研究

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789634

Andres Navarro;Leonardo Vargas;Nicolas Salazar;Alfredo Serna-Sabater;José Maria Molina

{"title":"Coexistence Study for the 2300-2400MHz IMT band in Colombia","authors":"Andres Navarro;Leonardo Vargas;Nicolas Salazar;Alfredo Serna-Sabater;José Maria Molina","doi":"10.1109/TLA.2024.10789634","DOIUrl":"https://doi.org/10.1109/TLA.2024.10789634","url":null,"abstract":"The deployment of 5G services varies across the globe, in Europe, Asia, and North America have seen the most significant deployment, while some Latin American countries are still in the process. This review examines the regulations related to radio frequency bands and analyzes ways to optimize radio space in the 2300-2400 MHz band in Colombia. The findings and recommendations serve as a reference for similar countries in Latin America. Based on the results, it is recommended to maintain a minimum distance of 100 meters between IMT base stations and Bluetooth and ZigBee systems. For WiFi, it is advisable to use channels higher than 5 or ensure a separation of at least 1 kilometer. Indoors, no special attention is required due to wall attenuation. A separation of around 5 MHz is necessary between the two bands in laboratory tests. This ensures that the interference effects of IMT towards WiFi or vice versa stay within the acceptable limits of PER. The guard band should be established with respect to the LTE signal, which is the most restrictive case, and serves as the reference signal. In connection with band 40 of LTE, the guard band will be 0.6 MHz and 0.8 MHz with respect to the WLAN signal.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 12","pages":"1073-1083"},"PeriodicalIF":1.3,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10789634","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810343","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

Supplementary Loop in BESS Control Scheme for SSO Mitigation in DFIG-Based Wind Farms 基于dfig的风电场SSO缓解的BESS控制方案中的补充环路

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789630

Roberto Moreno;Nancy Visairo Cruz;Ciro Alberto A. Núñez Gutiérrez;Julio Hernández Ramirez;Juan Segundo Ramirez

引用次数: 0

Illustrating Classic Brazilian Books using a Text-To-Image Diffusion Model 使用文本到图像扩散模型说明经典巴西书籍

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789626

Felipe Rodrigues Perche Mahlow;André Felipe Zanella;William Alberto Cruz Castañeda;Regilene Aparecida Sarzi-Ribeiro

{"title":"Illustrating Classic Brazilian Books using a Text-To-Image Diffusion Model","authors":"Felipe Rodrigues Perche Mahlow;André Felipe Zanella;William Alberto Cruz Castañeda;Regilene Aparecida Sarzi-Ribeiro","doi":"10.1109/TLA.2024.10789626","DOIUrl":"https://doi.org/10.1109/TLA.2024.10789626","url":null,"abstract":"In recent years, Generative Artificial Intelligence (GenAI) has undergone a profound transformation in addressing intricate tasks involving diverse modalities such as textual, auditory, visual, and pictorial generation. Within this spectrum, text-to-image (TTI) models have emerged as a formidable approach to generating varied and aesthetically appealing compositions, spanning applications from artistic creation to realistic facial synthesis, and demonstrating significant advancements in computer vision, image processing, and multimodal tasks. The advent of Latent Diffusion Models (LDMs) signifies a paradigm shift in the domain of AI capabilities. This article delves into the feasibility of employing the Stable Diffusion LDM to illustrate literary works. For this exploration, seven classic Brazilian books have been selected as case studies. The objective is to ascertain the practicality of this endeavor and to evaluate the potential of Stable Diffusion in producing illustrations that augment and enrich the reader's experience. We will outline the beneficial aspects, such as the capacity to generate distinctive and contextually pertinent images, as well as the drawbacks, including any shortcomings in faithfully capturing the essence of intricate literary depictions. Through this study, we aim to provide a comprehensive assessment of the viability and efficacy of utilizing AI-generated illustrations in literary contexts, elucidating both the prospects and challenges encountered in this pioneering application of technology.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 12","pages":"1000-1008"},"PeriodicalIF":1.3,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10789626","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810346","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

Stability of Networking DC Microgrids with Active Loads 带主动负荷的直流微电网联网稳定性研究

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-12-11 DOI: 10.1109/TLA.2024.10789631

Marco Carnaghi;Marcos Judewicz;Paula Cervellini;Rogelio Garcia Retegui;Marcos Funes

引用次数: 0

Low Cost and Optimized FPGA-HIL Real Time Simulation of a Boost Converter Powered by a Photovoltaic Panel 低成本、优化的 FPGA-HIL 实时仿真光伏电池板供电的升压转换器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-10-30 DOI: 10.1109/TLA.2024.10738270

Rodolfo Orosco Guerrero;Elias José Juan Rodríguez Segura;José Juan Martínez Nolasco;Fany Rodriguez

{"title":"Low Cost and Optimized FPGA-HIL Real Time Simulation of a Boost Converter Powered by a Photovoltaic Panel","authors":"Rodolfo Orosco Guerrero;Elias José Juan Rodríguez Segura;José Juan Martínez Nolasco;Fany Rodriguez","doi":"10.1109/TLA.2024.10738270","DOIUrl":"https://doi.org/10.1109/TLA.2024.10738270","url":null,"abstract":"This paper presents the development, analysis and testing of a dynamic model for a boost converter powered by a photovoltaic panel. The mathematical model of the panel is presented and a strategy is proposed to integrate its nonlinear dynamics into the dynamic model of the boost converter. Emphasis is placed on the dynamic behavior, leaving the modeling of the effects of parasitic losses inherent to electronic devices for a future study. A discrete model that is feasible to implement in an FPGA to achieve HIL simulation in real time is shown. An optimized strategy of implementation of nonlinear functions implemented in lookup tables is presented. That strategy allows optimizing the resolution without affecting the calculation latency. A latency analysis of the calculation of the model states is also included where a time of 100ns is established for each simulation step. This latency time is sufficient for real-time simulations. Finally, comparisons of results with a software-based simulator to validates the proposed model are shown.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 11","pages":"962-970"},"PeriodicalIF":1.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10738270","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555116","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

Deep Learning and object detection for water level measurement using patterned visual markers 利用模式化视觉标记进行水位测量的深度学习和目标检测

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-10-29 DOI: 10.1109/TLA.2024.10738344

Gabriel M. Domingues Filho;Caetano M. Ranieri;Saulo Neves Matos;Rodolfo Ipolito Meneguette;Jó Ueyama

引用次数: 0

Design and implementation of a low cost isotropic electric field sensor for SAR measurements 设计并实现用于合成孔径雷达测量的低成本各向同性电场传感器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-10-29 DOI: 10.1109/TLA.2024.10738269

Marco Quispe;Javier Samaniego;Jorge Olivares;Rolando Adriano;Brayan Perez;Saúl Inca

{"title":"Design and implementation of a low cost isotropic electric field sensor for SAR measurements","authors":"Marco Quispe;Javier Samaniego;Jorge Olivares;Rolando Adriano;Brayan Perez;Saúl Inca","doi":"10.1109/TLA.2024.10738269","DOIUrl":"https://doi.org/10.1109/TLA.2024.10738269","url":null,"abstract":"Specific Absorption Rate (SAR) measurement systems are used to evaluate exposure to fields radiated by wireless devices placed close to people's bodies. One of the fundamental elements of these systems is an isotropic electric field sensor that is small relative to the radiated wavelength. The obtained SAR value must be compared with the basic restriction levels or exposure limits established by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) or similar international bodies. This work presents the design and implementation of a novel isotropic electric field sensor made with low-cost materials and processes. The response of the developed sensor was compared with the response of a commercial probe in order to perform calibration. The calibration methodology proposed in this work allows transforming voltage measured with the developed low-cost probe to electric field values measured with a calibrated commercial probe in order to calculate SAR values. The results show that the developed sensor can be used in SAR measurement processes.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"22 11","pages":"983-989"},"PeriodicalIF":1.3,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10738269","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540414","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

High Step-up DC-DC Converter with Reconfiguration Capability 具有重构功能的高升压直流-直流转换器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-10-29 DOI: 10.1109/TLA.2024.10738345

Krishna Velmajala;Srinivasa Rao Sandepudi

引用次数: 0