Documentação de convênios e P&D
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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Resultados da Pesquisa
Item Metodologia para Diagnosticar a Qualidade de Energia Elétrica Referente à Distorção Harmônica em Sistema Trifásico de Baixa Tensão Utilizando Lógica Fuzzy(Universidade Federal do Pará, 2010) GONÇALVES, Benevaldo Pereira; COSTA JÚNIOR, Carlos Tavares daThis work emphasizes the importance of monitoring and diagnosing the quality of electric power from the viewpoint of harmonic distortion present in the electrical installation in low voltage three-phase system using a methodology to analyze and diagnose the level of harmonic disturbances evaluating the overall indicator of distortion Harmonic (THD), supported by an expert system based on a Fuzzy inference system.Item Sistema para Tomada de Decisão na Programação de Produção de Celular e Modem, Utilizando Lógica Fuzzy(Universidade Federal do Pará, 2010) SILVA, Carlos Américo de Souza; COSTA JUNIOR, Carlos Tavares daThe objective of this paper is to present a model using fuzzy logic, which seeks to assist the process of making decision as to which product should have priority in scheduling of the manufacturing process where there are two classes of products (WCDMA Modem and Mobile Phone). With this, it aims to identify particularities and characteristics of the productive processes, creating a better sequencing of production, whose master plan of production will be able to meet demand according to market fluctuations. The main purpose of the proposed system is to assist professionals in industrial planning to determine which products should be prioritized in the production line based on manufacturing characteristics, such as delivery time, cycle time, production process, and margin contribution, creating a production program best suited to the reality of the organization, in other words, optimizing existing resources and increasing profits.Item OS IMPACTOS NA QUALIDADE DA ENERGIA ELÉTRICA ORIUNDOS DAS LÂMPADAS FLUORESCENTES COMPACTAS INSTALADAS NO PROGRAMA LUZ PARA TODOS(Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares daThe Brazilian Federal Program "Luz para Todos" provides installation kits that include three 15W compact fluorescent lamps in beneficiary households. These lamps exhibit a high level of harmonic distortion due to their auxiliary equipment. This study assesses the impact of these lamps on power quality by analyzing the injection of harmonics into distribution networks. Measurements of Total Harmonic Distortion (THD) were conducted, extending the analysis to a real distribution system operated by the CELPA utility company. The results indicate high levels of THD, significantly affecting the quality of power supplied to consumers.Item UTILIZAÇÃO DO ALGORITMO NO CEP E SUA CONFIABILIDADE NOS PROCESSOS INDUSTRIAIS, APLICADO EM CONTROLE DE TORQUE: ESTUDO DE CASO DO PÓLO DE DUAS RODAS(Universidade Federal do Pará, 2011) ALENCAR, David Barbosa de; LIMÃO, Roberto CélioThe use of Statistical Process Control (SPC) is crucial in the production process, requiring continuous improvement. However, there is resistance to adopting new methodologies. The use of computational tools in SPC has become an essential trend. This dissertation aims to guide companies and institutions in adopting such tools, presenting an algorithm to optimize SPC application. Statistical techniques are employed to validate process security, demonstrating that SPC is a management tool that enables measuring product and service quality, comparing them to desired standards, and implementing corrective actions. The proposed approach is illustrated through a case study in the two-wheel industrial sector.Item GERENCIAMENTO DO SUPRIMENTO DE ÓLEO COMBUSTÍVEL PARA USINA TÉRMICA NO AMAZONAS ATRAVÉS DE SISTEMAS INTELIGENTES(Universidade Federal do Pará, 2011) SILVA NETO, Almiro Gomes da; FARIA, Marlene Araujo deThe objective of this work is to develop a computational tool for decision support in the supply of fuel oil for thermal power plant, examining the main variables of thermal generation using fuel oil and the entire logistical process. The basis for the study is on the operating principle of a thermal plant, the logistics of fuel and its peculiarities. The current supply management and all procedures involved in this process give support for the proposed innovation. The case study consists of a simulation system for managing oil supply through a mathematical simulator to confirm the optimal inventory solution through fuzzy logic. The development of the computational tool for decision support in the new requests of fuel oil includes the characteristics indicated by the users as an interface for easy understanding, operation, and fast processing of information to predict the best time to request a new shipment of oil.Item INFLUÊNCIA DE INCRUSTAÇÕES NA EFICIÊNCIA DE TROCADORES DE CALOR: O CASO DA PERDA DE PRODUTIVIDADE EM HIDRELÉTRICAS(Universidade Federal do Pará, 2011) LOPES, Antonio Dimael de Almeida; MACÊDO, Emanuel NegrãoHeat exchangers are widely used in industrial processes and various applications. In hydroelectric power plants, they are essential for cooling key components, employing open cooling systems that draw water directly from reservoirs. However, this method can lead to fouling buildup, reducing equipment efficiency and impacting productivity. This study evaluated whether the application of an automated mechanical cleaning process could minimize or eliminate efficiency loss in heat exchangers used in hydro generator cooling systems. The research showed that periodic removal of fouling significantly improves thermal efficiency and reduces unplanned shutdowns in hydroelectric plants.Item UTILIZAÇÃO DE DUTOS DESCARTADOS DO GASODUTO COARI-MANAUS PARA CONFECÇÃO DE PONTE PROVISÓRIA SOBRE O IGARAPÉ DO CEDRO SEGUNDO A NORMA API 5L X70(Universidade Federal do Pará, 2010) SANTOS, Doriel Andrade dos; FARIA, Marlene de AraújoThis study aims to present an alternative construction method using discarded API 5L X70 pipelines from the Coari-Manaus gas pipeline for the construction of a temporary bridge over the Cedro stream in the Amazon rainforest. The bridge facilitates material and worker transportation for the construction of the Compression Station – ECOMP in Juaruna. The ANSYS 8.0 program was used to analyze the structural behavior of a bridge element, applying numerical methods to evaluate stress and deformation in structural components. Additionally, an environmental mitigation proposal is presented to reduce the impact of equipment crossing the Cedro stream, as well as the logistical challenges faced by companies operating in the Amazon region.Item AUTENTICAÇÃO BIOMÉTRICA BASEADA NA DINÂMICA DA DIGITAÇÃO EM APARELHOS DE TELEFONIA MÓVEL(Universidade Federal do Pará, 2012) MATTOS, Edma Valléria Cunha Urtiga de; OLIVEIRA, Roberto Célio Limão deThis paper proposes a new approach to biometric authentication based on keystroke dynamics in mobile devices. The methodology is easily accessible and can be used by anyone familiar with mobile phones. Users store their information in the system, creating an access account. During password entry, the system tracks the time taken to press and release keys and compares these parameters with stored data. If the patterns match, the user is authenticated; otherwise, access is denied. The study analyzed parameters such as input capture time, individual user models, and ideal thresholds. This approach enhances security, ensuring that even if an impostor knows the password, only the legitimate user can gain access.Item OTIMIZAÇÃO DO TEMPO DE TESTE FUNCIONAL DE PLACA DE CIRCUITO IMPRESSO MONTADA PARA COMPUTADOR PESSOAL(Universidade Federal do Pará, 2012) OLIVEIRA, Edson Farias de; BLANCO, Cláudio José CavalcanteThe increasing competitiveness among companies in the same sector has made continuous process optimization essential to reduce costs. This study evaluates the time involved in the functional testing phase of motherboards produced in the Industrial Pole of Manaus and proposes improvements for optimization. A system for image capture was developed to analyze idle times, along with test devices and a proprietary Linux-based test system, replacing the previous system that depended on foreign suppliers. Percentage gains were demonstrated through four optimization proposals: unifying tests, performing simultaneous tests on two boards, replacing the test system, and automating the test device. The results obtained after implementing these improvements were positive, reinforcing the importance of applying scientific methodologies combined with innovation to optimize production processes.Item SIMULAÇÃO COMPUTACIONAL NO AUXÍLIO À TOMADA DE DECISÃO NOS PROCESSOS INDUSTRIAIS: UTILIZANDO A FERRAMENTA TECNOMATIX PLANT SIMULATION 9.0(Universidade Federal do Pará, 2011) SANTOS, Eliton Smith dos; QUARESMA, João Nazareno NonatoCurrently, there are numerous automated production processes that are becoming increasingly complex due to the demands of the modern world. These processes require increasingly powerful engineering tools for efficient modeling and analysis. In this context, the computational tool Tecnomatix Plant Simulation 9.0 emerges as a means of optimizing industrial production. This study presents the application of this tool in modeling and simulating a production line, highlighting its relevance for production management by reducing costs and maximizing profits. The approach is demonstrated through a case study in the electronics industry, analyzing process efficiency and proposing improvements for time and resource optimization.