纸张定量横向分布控制系统的建模与预测控制

Cross-Direction Basis Weight Profile Modelling and Its Dynamic Matrix Control

在造纸过程中，纸张定量的横向分布控制是一个复杂的工业控制系统，至今尚无满意的数学模型，用传统的控制方法难以得到好的控制效果，本文给出了定量横向分布的动态模型，采用多变量动态矩阵控制算法（ＤＭＣ）对其进行控制，并与ＰＩＤ控制的效果进行了比较。仿真结果达到了预期的控制目标。

The cross-direction(CD)basis weight profile is a very important quality index of paper in papermaking process. Control systems for CD basis weight profile are generally being disturbed by long delay time and severe interactions. In this paper. a dynamic model for CD basis weight profile is introduced. A Dynamic Matrix Control (DMC)algorithm is adopted in the control of the system. Satisfactory results are obtained hy simulation.