基于模糊自适应PI改进的Smith预估器在网络化控制系统中的应用研究  

Applied Research of Smith Predictor Improved by Fuzzy- adaptive PI Controller in NCS

作　　者：刘杰[1] 刘勇[1] 顾博川[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《自动化信息》2009年第11期33-35,共3页Automation Information

摘　　要：网络化控制系统（NCS）中不可避免的网络诱导时延使传统的控制器难以达到较好的控制效果，针对网络化控制系统中前向传输时延无法精确测量的特点，提出了一种有效的控制方法。仿真结果表明，采用Smith预估控制与模糊自适应PI控制算法相结合的方法，能有效地增强网络化控制系统控制规律的自适应性，显著改善和提高系统的抗干扰性和鲁棒性能。There is an inevitable network-induced time delay in NCS which causes the conventional controller can not achieve a desirable control effect. In this paper, an effective control method is presented for the consideration of Networked Control System （NCS） with the characteristic of the forward-transmitted time delay that can not be precisely measured. A simulation result based on Madab has shown that this control method of combining Smith predictor and Fuzzy- adaptive PI control algorithm has effectively strengthened adaptive ability of control law in NCS, thus the performances of anti-jamming and robustness of the system have considerably been improved.

关 键 词：网络化控制系统 时延 SMITH预估器 模糊自适应PI控制 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置]