Estimativa da vazão do gás de combustão em um trocador de calor HE-3 usando o filtro de Kalman

Abstract

This work investigates the problem of estimating the flue gas flow signal in a heat exchanger using the Kalman filter. The methodology of this work comprises two steps: the mathematical modeling step and the state estimation step. In the first step, the Autoregressive models with Exogenous Inputs (ARX) are obtained, which describe the dynamics of the HE-3 heat exchanger system. In the second step, the estimation of the flue gas flow signal is obtained using the Kalman filter from the identified ARX model and a set of measurements. The results obtained suggest that the Kalman filter is a promising method for the estimation of signals involved in the reduction step in steelmaking, making it a useful tool for applications in steelmaking processes.