基于灰色预测的网络控制系统H∞鲁棒控制研究  

Research on H∞robust control of networked control systems based on Grey prediction

作　　者：王丽婧[1] 王志龙 王丽 孙振龙[1] Wang Lijing;Wang Zhilong;Wang Li;Sun Zhenlong(College of Computer and control engineering Qiqihar University,Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学计算机与控制工程学院,黑龙江齐齐哈尔161006

出　　处：《信息通信》2020年第8期45-48,共4页Information & Communications

基　　金：黑龙江省教育厅基本业务专项(135209241,135109245)。

摘　　要：针对网络控制系统存在的不确定时延及丢包问题,提出基于灰色预测的H∞鲁棒控制器设计方法。将控制器输出端至传感器部分等价为灰色系统的被控对象,建立离散控制系统模型,引入灰色预测算法,运用等维新息模型GM(1.1),取时延输出序列,预测下一时刻时延,确定控制器的输出。构造Lyapunov-Krasovskii函数,结合LMI方法给出了系统稳定的充分条件及控制器设计方法。仿真实例说明预测的引入降低了系统随机性,有效的提高系统控制精度。Aiming at the problem of uncertain time delay and data packet dropout in network control systems(NCS).A design method of H_∞robust controller based on gray prediction is proposed.The output of the controller to the sensor is equivalent to the controlled object of the grey system.The discrete control system model is established.Using the theory of grey prediction control.The GM(1.1)model is established.The length of time delay in the next moment is predicted.The output of controller is determined.A proper Lyapunov-Krasovskii function is derived and the sufficient conditions for the robust stability of the systems are established in the form of LMI.The simulation example shows that the introduction of the prediction method reduces the randomness of the system and improves the control accuracy.

关 键 词：网络控制系统 时延 丢包 灰色预测 鲁棒控制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]