长延时网络控制系统动态矩阵控制研究  

Research on Dynamic Matrix Control of Long Delay Network Controlled System

作　　者：王柱锋[1] 蒋静坪[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电气自动化》2008年第1期3-5,共3页Electrical Automation

基　　金：国家博士点学科专项科研基金(20030335002);浙江省科技厅(2004C31084)资助项目

摘　　要：在实际工程系统中,采样频率的选择取决于系统中信号的最高频率,网络传输延时取决于网络本身的传输特性。由此可见,网络传输延时不一定小于一个采样周期,但在网络控制有关的论文中往往假定网络延时小于一个采样周期。本文针对这种不合理的设定,提出了一种新型的长延时预测控制算法。首先对一类长延时网络控制系统进行了建模;接着利用动态矩阵控制原理导出了长延时网络控制系统的预测控制律。最后给出了仿真实验,结果表明在对一类长延时网络系统的控制中,提出算法的合理性和有效性。In the practical engineering system, the sampling frequency is decided by the highest frequency of system and the network communication delays depend on the network structure. Consequently, there is no corresponding relation between the network transmitted delay and sampling periods, nevertheless most papers about network controlled system （NCS） usually assume that the network delay is less than a sampling period. A novel predictive control algorithm for long delay NCS is put forward to avoid the illogical premising in this paper. Firstly a model of a class of long delay network controlled system is established, then the predictive control law is presented by using the dynamic matrix control（DMC）principle. At last, the simulation results illustrate that the proposed scheme is effective for a class of long delay NCS.

关 键 词：网络控制系统 长延时 动态矩阵控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]