Programa de Pós-Graduação em Engenharia de Processos - PPGEP/ITEC
URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/10052
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Navegando Programa de Pós-Graduação em Engenharia de Processos - PPGEP/ITEC por Orientadores "MACEDO, Emanuel Negrão"
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Item Acesso aberto (Open Access) Aprimoramento do desempenho do controlador preditivo multivariável aplicado em coluna depropanizadora utilizando filtro de kalman(Universidade Federal do Pará, 2019-05-07) GOMES, Cássio Ferreira; MACEDO, Emanuel Negrão; http://lattes.cnpq.br/8718370108324505The increase in the efficiency of industrial processes has been necessary in the present day, due to the high market competitiveness. In this context, techniques that seek to increase the performance efficiency of industrial plant control systems, minimizing costs and maximizing product quality, such as the use of Kalman Filter in process variables that feed control systems, has significant relevance. Kalman filter is a parameter estimation technique that allows, for linear systems, the reduction of noise and uncertainties that are subject to process variables. Its wide use is mainly due to the fact that the variables (information) that are obtained through the process, through physical instruments and measurement routines, have finite precision and are naturally corrupted by errors (random or coarse). These variables, when introduced into the control system, without the use of the Kalman Filter, carry all noise signals, reducing the performance of the control system. The aim of this work is to present the results of the Kalman Filter implementation in the industrial process, a propane generator column, controlled through a Predictive Controller, based on real data, in order to improve control performance and energy efficiency of this process. Simulation studies are performed on the MATLAB / SIMULINK platformItem Acesso aberto (Open Access) Software para otimizar o processo de análise de não conformidades do sinal de TV digital no padrão SBTVD(Universidade Federal do Pará, 2022-10-28) NASCIMENTO JUNIOR, Osório Ferreira do; MACEDO, Emanuel Negrão; Emanuel Negrão; SOUZA, Alan Marcel Fernandes de; http://lattes.cnpq.br/6749896733643775; https://orcid.org/0000-0002-1656-5714An important challenge is applying a methodology capable of creating advanced TV beam validations. Simply checking the beam's binary values, while able to identify many problems, could not identify all types of errors. In addition to this type of verification, there are several possibilities for errors generated during multiplexing, for example errors such as inconsistencies when crossing information between different tables, errors due to the order or frequency in which some tables are transmitted, and errors in synchrony and time data are complex cases that can be identified automatically. To perform the verification of the TV beam, an automation method will be developed that will receive the content transmitted by the broadcaster as input and will execute several algorithms to compare the received data with the expected values defined by the Brazilian Digital TV standard. After comparison the algorithm will notify if the beam is in disagreement with the expected one and will inform you which problems were encountered. The resulting solution should be used by product engineering teams when analyzing problems in the field. In several situations where there are errors in the reception of TV signals, it is necessary to capture the transmitted signals and thoroughly investigate the data, checking each table of the beam. The system will automate and facilitate this operation.