Identificação de um motor de indução trifásico aplicado para posicionamento utilizando modelo de Hammerstein

Abstract

This paper presents the identification of a three-phase induction motor of squirrel cage used as positioner servo, using the nonlinear Hammerstein model, which comprises a nonlinear static block followed by a linear dynamic block. The representation of a process using a nonlinear model aims to improve its performance, because it can represent the existing dynamics in the process. We used a low cost potentiometer for the feedback system, which causes noise, causing nonlinear technique is even more important and supports variations in system parameters of the process. At the end of the paper is performed to validate model comparing it with data collected experimentally and evaluating performance through validation indices.