Control of Stock Consistency in Head Box Approach Flow System

It has been identified that head box of a wet end paper machine is important to control to maintain the quality of feed liquor for production of pulp for raw materials during cooking in digesters. Controlling the head box efficiently will not only make the industry sustainable in terms of good quality of production of paper and paper products but also combats efficiently the solid waste disposal problem by converting this waste to wealth. Presence of delay time and availability of different transfer functions for the same parameter challenge the situation further. Therefore, an attempt has been made to solve this issue.