Salazar, Andrés OrtizLacerda, Geraldo de Moura2014-12-172010-07-062014-12-172009-12-09LACERDA, Geraldo de Moura. Detecção de interface em tanques de petróleo usando transmissores de nível e controladores Fuzzy. 2009. 100 f. Dissertação (Mestrado em Pesquisa e Desenvolvimento em Ciência e Engenharia de Petróleo) - Universidade Federal do Rio Grande do Norte, Natal, 2009.https://repositorio.ufrn.br/jspui/handle/123456789/12913This work presents a proposal to detect interface in atmospheric oil tanks by installing a differential pressure level transmitter to infer the oil-water interface. The main goal of this project is to maximize the quantity of free water that is delivered to the drainage line by controlling the interface. A Fuzzy Controller has been implemented by using the interface transmitter as the Process Variable. Two ladder routine was generated to perform the control. One routine was developed to calculate the error and error variation. The other was generate to develop the fuzzy controller itself. By using rules, the fuzzy controller uses these variables to set the output. The output is the position variation of the drainage valve. Although the ladder routine was implemented into an Allen Bradley PLC, Control Logix family it can be implemented into any brand of PLCsapplication/pdfAcesso AbertoDetecção de InterfaceTransmissores de nívelControladores FuzzyInterface detectionLevel transmittersFuzzy controllersmasterThesisCNPQ::CIENCIAS EXATAS E DA TERRA