摘要
针对存在欺骗攻击的网络控制系统,对系统状态进行估计并设计了输出反馈控制器.传感器到控制器的网络通道中存在欺骗攻击,传感器发出信号后,设计动态量化器,节省带宽资源;将欺骗攻击建模为未知有界的信号,在此基础上,提出了一种新的状态集员估计方法——椭球估计方法,得到了封闭的状态估计椭球集.将得到的状态估计椭球集参数最小化,使得估计状态近似真实状态.通过设计输出反馈控制器,得到了闭环系统渐近稳定的充分条件.最后,通过数字仿真算例验证了所提方法的有效性.
For the networked control system with deception attack,the state of the system is estimated and the output feedback controller is designed.Suppose that there is a deception attack in the network channel from the sensor to the controller.After the sensor sends a signal,a dynamic quantizer is designed to save bandwidth resources;In this paper,the deception data is modeled as an unknown but bounded signal,and a new set member state estimation method-the ellipsoid estimation method is proposed,and a closed state estimation ellipsoid set is obtained.After that,the parameters of the obtained state estimation ellipsoid set are minimized,so that the estimated state approximates the real state.By designing an output feedback controller,a sufficient condition for the closed-loop system to satisfy asymptotic stability is obtained.Finally,a digital simulation example verifies the effectiveness of the proposed method.
作者
周颖
郑颖
肖敏
ZHOU Ying;ZHENG Ying;XIAO Min(College of Automation&College of Artificial Intelligence,Nanjing University of Posts and Telecommunications,Nanjing 210023)
出处
《系统科学与数学》
CSCD
北大核心
2022年第7期1633-1647,共15页
Journal of Systems Science and Mathematical Sciences
基金
国家自然科学基金(62073172)资助课题。
关键词
网络控制系统
欺骗攻击
量化器
渐近稳定
Networked control system
deception attack
quantizer
asymptotic stability
