2012-10-082012-10-082012-04-22SILVA, Raphael Diego Comesanha e. Estudos de estratégias de identificação paramétrica para detecção e diagnóstico de faltas em um processo industrial do tipo tanques comunicantes. Orientador: Carlos Tavares da Costa Júnior; Coorientador: Walter Barra Júnior. 2012. 118 f. Dissertação (Mestrado em Engenharia Elétrica.) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2012. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/3024. Acesso em:.https://repositorio.ufpa.br/handle/2011/3024This dissertation presents a technique for detection and diagnosis of incipient faults, which cause changes in behavior of the system under investigation and are reflected in the mathematical model’s parameters values variation. As a testbed, was constructed a model of an industrial system computing environment Matlab/Simulink, which consists of a dynamic plant composed of two tanks linked to each other. The modeling of this plant was carried out by physical equations that describe the dynamics of the system. The fault, which the system was submitted, represents a gradual clogging in the exit pipe of the tank 2. This bottleneck causes a gradual reduction, up to 20%, of the pipe section. The technique of fault detection was performed by real-time estimation of parameters Auto-regressive models with exogenous inputs (ARX) with fuzzy and Recursive Least Squares (RLS) estimators. Already, the percentage clogging diagnosis of the pipe was obtained by a fuzzy system parameter tracking, fed back by the integral of the residue detection. Using this methodology, it was possible to detect and diagnose the simulated fault in three differents operating points of the system. In both techniques tested, the RLS method perform well, only to detect fault. Otherwise, the fuzzy method performed better, in detect and diagnose the fault applied to the system, noting the work propose.porAcesso AbertoDetecção de faltasDiagnóstico de faltasEstimador fuzzyEstimador MQR (Mínimos quadrados recursivos)Fault detectionFault diagnosisRLS (Recursive least square) estimatorFuzzy estimatorEstudos de estratégias de identificação paramétrica para detecção e diagnóstico de faltas em um processo industrial do tipo tanques comunicantesDissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIA::MEDICAO, CONTROLE, CORRECAO E PROTECAO DE SISTEMAS ELETRICOS DE POTENCIA