State Feedback Controller Design for CSTR Based on Kalman Filter

Abstract

Due to operating conditions and economic factors, it may be either practical or feasible to measuring the chemical species directly in the continuous stirred tank reactor (CSTR) system which is a typical nonlinear, multi-variables, time-varying system. So, a concentration estimate strategy of components based on Kalman filter is proposed, with which the measurement of temperature conversion can be reconstructed. Then the state feedback controller is designed based on the estimated strategy. Simulation results show that the proposed control scheme is efficient and the system contains good dynamic performance.

Application of Feedback Linearization to the Controller of CSTR

“…In the continuous operated tank reactor, the process parameters has nothing to do with space and time, material composition and temperature are all the same everywhere, and they are the same to the outlet. Continuous stirred tank reactor is applicable to products in the high yield production, especially applicable to chemical reactions which are sensitive to temperature [5,6]. Differential geometry method is a powerful tool for analysis of the nonlinear system [7], especially the feedback linearization method developed in recent years based on the system input/output(I-O), "direct feedback linearization (DFL) method will greatly simplify the problem [8]- [10].It is welcomed by the engineering.…”