State estimation using observers for a continuous stirred tank reactor (CSTR) [articol]

Abstract

The design of various feedback controllers, optimal controllers require the information about all the states present in the system. Not all the states in the system will be available for direct measurement. In order to estimate all the states of the system the observers are designed. In this paper the state estimation problem of the CSTR is considered, the observers used include Luenberger Observer, Kalman Observer, and Sliding Mode Observer. The states that are estimated using the observers are utilized by the state feedback controllers and the optimal controllers, to ensure the convergence of the states to the equilibrium point. The designed observers had the residuals converging to zero in finite time and the comparison in terms of estimation errors resulted in better performance of the sliding mode observer.