Improving the Performance of Control System for Headbox Consistency of Paper Mill Using Simulated Annealing

The paper mill is one of the major industries of India. The various processes that are present in paper mill are not simple to model and control because of presence of nonlinearities and the dead time. The present work is focused on a prime section of a paper mill that is the headbox. The regulation of its consistency is a major concern. In this paper, first of all, the FOPDT model of the head box consistency dynamics is approximated as a polynomial model using the Padé approximation and hence control system is designed for it. The Simulated Annealing (SA) technique is used for the performance optimization of this control system. MATLAB software has been used to obtain all simulation results.