蒸发器过热度时滞系统的动态矩阵控制研究  

Research on Dynamic Matrix Control of evaporator superheat system with time-delay

作　　者：卫丹华[1] 何建忠[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《计算机工程与应用》2013年第1期254-257,共4页Computer Engineering and Applications

基　　金：上海市科委2010年度创新资金项目(No.1006H171900)

摘　　要：针对蒸发器过热度具有大纯时延的特点,提出采用预测控制的方法。根据对象的输入输出数据辨识出蒸发器过热度对象的动态模型,再根据动态矩阵控制(DMC)的预测模型预测出系统未来时刻的输出,从而达到将过热度控制在目标范围内的要求。实验结果表明,采用DMC的控制方法,系统运行稳定,抗干扰性强,与常规PID控制相比,DMC的控制精度高,控制效果更佳。As for the evaporator superheat with the characteristics of large time delay, this paper proposes predictive control approach. Based on the input and output data of the object to identify the object dynamic model of the evaporator superheat, it predicts the next time output of the system using the prediction model based on Dynamic Matrix Control（DMC）, to control the superheat requirements in the target range. The experimental results show that using the control method of DMC, the system runs stable, has strong anti-interference. Compared with conventional control effect. PID control, the DMC control runs more accurately, and can get better

关 键 词：蒸发器过热度 大纯时延 预测控制 动态矩阵控制 阶跃响应模型 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]