改进型的动态矩阵控制.docVIP

Modified dynamic Matrix Control (Department of Automation, South China University of Technology, Guangzhou) Abstract Based on the analysis of Dynamic Matrix Control which appeared in seventies, it is found that the algorithm cannot give satisfactory results in regulation case. Therefore, a new modified algorithm with variable predictive coefficients is presented. By theoretical analysis and practical application, it has been proven that the modified algorithm is correct and advantageous. Control experiments which are carried out in a experimental thermal equipment in the process control laboratory have shown that the algorithm is of potential practical value. 文摘分析七十年代出现的动态矩阵控制基础上,Introduction The Dynamic Matrix Control(DMC) appeared in the end of sixties or the beginning of seventies. It is a multi-step predictive algorithm that combines the discrete convolution model and the least squares method. In the last decade, DMC has attained practical application in America and France, and got satisfatory results. Although it has got fairly good results in some areas of process control, the DMC control still has a serious disadvantage. The DMC algorithm can attain stable and rapid response in servo operation system, but the response in regulation case is often slow. Since regulation operation is most widely used in chemical and related industris, the disadvantage as mentioned has hampered the DMC to become widespread in process control. 动态矩阵控制（DMC）的出现在六十年代末或七十年代初。它是一个多步骤的预测算法,结合了卷积模型和最小二乘法。响应中规定自调节操作广泛应用于化工及相关所存在的弊端,阻碍了DMC成为普遍的过程控制。 Therefore, improvement of the control quality of DMC in regulation case is necessary in the practice of process control. Improvement of Conventional DMC ， 1)Development of the algorithm with predictive corrective coefficient It is shown from the derivation of conventional DMC algorithm (see referencesl, 2) that the predictive output values; are Corrected by the term In this situation, there exis