Maitelli, André LaurindoCerqueira, Auciomar Carlos Teixeira de2014-12-172010-09-082014-12-172009-12-16CERQUEIRA, Auciomar Carlos Teixeira de. Estimação e compensação de não linearidades inerentes aos atuadores dos processos industriais. 2009. 82 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/123456789/12916The oscillations presents in control loops can cause damages in petrochemical industry. Canceling, or even preventing such oscillations, would save up to large amount of dollars. Studies have identified that one of the causes of these oscillations are the nonlinearities present on industrial process actuators. This study has the objective to develop a methodology for removal of the harmful effects of nonlinearities. Will be proposed an parameter estimation method to Hammerstein model, whose nonlinearity is represented by dead-zone or backlash. The estimated parameters will be used to construct inverse models of compensation. A simulated level system was used as a test platform. The valve that controls inflow has a nonlinearity. Results and describing function analysis show an improvement on system responseapplication/pdfAcesso AbertoEstimação de parâmetroscompensação inversanão linearidadezona- mortafolgamodelo de hammersteinfunção descritivaparameters estimationnonlinearityinverse compensationdead-zonebacklashhammerstein modeldescribing functionmasterThesisCNPQ::ENGENHARIAS