Documentação de convênios
URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173
Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas
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Item Analysis of lubricating oil in internal combustion engines of electrical power generation plant. Subtítulo: Análisis de aceite en motores de combustión interna estacionarios de planta de generación de energía eléctrica.(Instituto de Tecnologia, 2010) SANTOS, Gilbert Queiroz dos; LEITE, Jandecy Cabral; BRASIL, Davi do Socorro BarrosThe article presents the application of Fuzzy Logic in the inventory management of a public organization, aiming to reduce material shortages caused by lead time. The study proposes a system based on linguistic variables such as stock level and demand, using membership functions and fuzzy rules to assist in decision-making regarding supply, replenishment, and bidding. The results demonstrate the method's feasibility for optimizing inventory control and minimizing costs.Item Aplicação de Filtro Harmônico em Sistemas Elétricos de Baixa Tensão utilizando Lógica Fuzzy(Instituto de Tecnologia, 2010) CIRINO, Weverson dos Santos; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; TOSTES, Maria Emilia de Lima; QUARESMA, João Nazareno NonatoThe article discusses the application of passive harmonic filters in low-voltage electrical systems to mitigate distortions caused by harmonics, using Fuzzy Logic. The proposed algorithm analyzes and detects harmonic components exceeding 5% of the fundamental coefficient, designing customized filters. The methodology includes computational simulations and validation according to IEC standards, demonstrating effectiveness in reducing distortions and improving power quality.Item Avaliação de impactos harmônicos na rede elétrica através dos indicadores THD e Fator de Potência utilizando Lógica Fuzzy(Instituto de Tecnologia, 2013) GONÇALVES, Benevaldo Pereira; BRITO JUNIOR, Jorge Almeida; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; TOSTES, Maria Emilia de Lima; CUNHA, Edinaldo José de SousaThe study proposes an analysis of power quality in low-voltage three-phase systems using THD (Total Harmonic Distortion) and Power Factor indicators, based on a Fuzzy inference system. The method integrates expert knowledge and current standards to classify harmonic distortions and energy efficiency, avoiding manual regulation checks. Results demonstrate the system's effectiveness in identifying critical conditions, such as high THD and low Power Factor, recommending corrective actions.Item Controle de Climatização Usando Controlador PID Ajustável com Uso da Lógica Fuzzy(Instituto de Tecnologia, 2018) CAVALCANTE, Caio César Paulino; AZEVEDO, Manoel Socorro SantosThe objective of this article is to present and evaluate a hybrid controller design that uses Fuzzy logic applied to a PID controller for HVAC systems. Simulations using Simulink, Matlab, Sketch Up, and Energy Plus software showed energy savings in air conditioning, which accounts for a significant portion of electricity consumption in buildings.Item Diagnóstico de Faltas no Sistema Elétrico de Potência (SEP) e Recomposição Automática via Sistema Digital de Controle Distribuído (SDCD): Aplicação na Hydro Alunorte para Redução de Perdas de Produção(Instituto de Tecnologia, 2015) MORAES, Sidney José da Silva; VIEIRA JUNIOR, PetrônioThis study introduces a tool for fault diagnosis and automatic restoration of the electrical system at Hydro Alunorte using a Distributed Digital Control System (DCS) and fuzzy logic. The aim is to reduce analysis and recovery time, minimizing production losses associated with power interruptions. The methodology involves selecting strategic substations, analyzing historical events, and developing intelligent systems for automated decision-making.Item Aplicação da Lógica Fuzzy na Gestão de Manutenção de Falhas de Soldagem SMD em Processos Produtivos Automatizados – Estudo de Caso(Instituto de Tecnologia, 2016) SOARES, Erivan Glaucio Fleury da Costa; OLIVEIRA, Kleber BittencourtThe present study aims to present the use of fuzzy logic to reduce the subjectivity of options and judgments in maintenance management in automated production processes, focusing on the occurrence of welding failures (SMD). For this purpose, an exploratory and descriptive case study was adopted, analyzing data collected between January 2015 and January 2016. The research employed tools such as the Ishikawa Diagram, Pareto Diagram, and Variable Control Chart to highlight the main defects. It was concluded that after system modeling and applying fuzzy logic concepts, there was a significant reduction in failures, greater understanding of phenomena, and effective solutions to avoid recurrencesItem Desenvolvimento de um Sistema Inteligente para Determinação de Set Point no Controle da Área Superficial da Alumina: Aplicação de Lógica Fuzzy em Calcinadores de Leito Fluidizado(Instituto de Tecnologia, 2015) COSTA, Hugo Pedro de Sousa Valente da; COSTA JUNIOR, Carlos Tavares daThis study investigates the implementation of a fuzzy system to control the specific surface area of alumina in fluidized bed calciners. The fuzzy methodology was chosen for its ability to handle complex and imprecise problems, leveraging empirical knowledge from experts. The developed system proposes temperature and pressure set points to optimize alumina quality and operational safety. Simulation results demonstrated the system's effectiveness, with adjustments based on real data collected from January to December 2014.Item Sistema Fuzzy para Automação do Balizamento Luminoso de Pista de Pouso e Decolagem para Aeroportos(Instituto de Tecnologia, 2018) COSTA, João Ulisses Rodrigues; SILVA, Orlando FonsecaThis work presents a proposal for the automation of runway edge lighting for airport landing and takeoff using Fuzzy logic. The aim is to reduce the workload of air traffic controllers, minimizing the possibility of human errors during critical moments of landing and takeoff. The proposed system uses runway visibility and cloud ceiling data, collected by equipment such as the Visibilometer and the Tetometer, to adjust the light intensity of the runway edge lighting. Simulations performed in MATLAB with real data demonstrated the feasibility of the proposal, with results comparable to decisions made by human operators.Item Aumento da Produtividade: Utilizando a Metodologia Six Sigma e Lógica Fuzzy, um Estudo de Caso em uma Empresa do Pólo Industrial de Manaus – PIM.(Universidade Federal do Pará, 2011) FERREIRA, Marcela Seixas.; SILVA, Orlando Fonseca.This study uses Six Sigma methodology in order to increase the productivity of the Line of LCD (Liquid Crystal Display) in a factory in the Pólo Industrial de Manaus - PIM and a fuzzy inference system to measure the increase of productivity, where we identified several parameters based on the Six Sigma methodology. Among which, according to the degree of relevance of specialists in this study, we can highlight: waste, production capacity and time study. Emphasizing further that the proposed system is of great importance to practitioners and researchers of production management, who want results that reduce costs and therefore increase profits of the organization.Item A aplicação da lógica fuzzy para avaliação do produto canote do garfo(Instituto de Tecnologia Galileo da Amazônia, 2010) SANTOS, Ruy Sidney Nascimento dos; COSTA JÚNIOR, Carlos Tavares da; COSTA JÚNIOR, Carlos Tavares daWith technological advancements, the engineering sector has been seeking solutions that offer positive results for the growth of their companies or organizations. Simulation methods for evaluating the mechanical behavior of products subjected to static and dynamic loads are extremely necessary to reduce manufacturing costs. The use of mechanical and virtual tests is of vital importance for product evaluation. This study aimed to apply fuzzy logic to a product called the bicycle fork steerer tube, analyzing both the degree of membership varying between 0 and 1 and the degree of truth also varying between 0 and 1, with the main focus on the behavior of the steerer tube and its validation.
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