一种新的动态矩阵控制的截断误差校正方法

动态矩阵控制(DMC)在建模时会产生截断误差，从而影响系统性能。针对这一问题，该文对传统DMC算法进行了改进，提出一种新的截断误差校正方法。通过动态补偿系数对预测模型的补偿，减小了截断误差对系统性能的影响。与传统的DMC算法相比，改进后的DMC控制允许模型向量存在一定的截断误差，以较小的建模时域或较高的采样频率实现高性能的DMC控制。最后，以工业常用的非最小相位系统为对象进行仿真研究，结果表明了该方法的有效性和实用性。

A New Method for Compensating Model Truncation Error in Dynamic Matrix Control

Truncation error which is produced in Dynamic Matrix Control (DMC)when modeling affects the properties of the system. Considering this problem, this paper mends the general DMC algorithm, and introduces a new method for compensating model truncation error which descends the effect on the system performance by compensating coefficient. Comparing with the general DMC algorithm, this method permits a certain truncation error with smaller control horizon and higher sampling frequency and can be used to get high performance. At last, simulation research has been done on industrial non-minimum phase plant, and the result demonstrates the validity and practicability of the new approach.