Question: The process in Figure is a simplified head box for a paper-making process. The control objectives are to control the pressure at the bottom of the head box tightly and to control the slurry level within a range.
(a) Derive a model for the effects of the two inlet flows on the controlled variables.
(b) Design a control system by pairing the controlled and manipulated variables. Discuss the performance of your design and any special features that should be included in the implementation.