Research of Predictive Function Control of Basis Weight and Moisture Content

Basis weight and moisture content are the two most important control variables which determine the quality of finished paper in paper-making process. According to the two variables' characteristic of strong intercoupling and property of large time delay, a method based on multivariable predictive function control (MPFC) algorithm for first-order plus time delay is proposed to employ to the basis weight and moisture control system. The simulation results of the basis weight & moisture content control system demonstrate the effectiveness and robustness of this algorithm. And practices prove that the control system can satisfy the requirements of paper-making process.