Because the paper-making process is the final stage of the whole paper manufacturing process, the results of control in this process have a significant impact on the final product quality. Accordingly, optimizing control parameters of each control component such as machine direction (MD) control, cross direction (CD) control and grade change control depending on the paper product will greatly help stabilize the operation and thus improve the profits. Figure 1 shows an overview of the paper-making process and typical control components of the QCS. (1)