Observer-Based Event-Triggered Predictive Control for Networked Control Systems under DoS Attacks.

Weifan Lu,Xiuxia Yin,Zhiwei Gao,Yichuan Fu

doi:10.3390/s20236866

Abstract

This paper studies the problem of DoS attack defense based on static observer-based event-triggered predictive control in networked control systems (NCSs). First, under the conditions of limited network bandwidth resources and the incomplete observability of the state of the system, we introduce the event-triggered function to provide a discrete event-triggered transmission scheme for the observer. Then, we analyze denial-of-service (DoS) attacks that occur on the network transmission channel. Using the above-mentioned event-triggered scheme, a novel class of predictive control algorithms is designed on the control node to proactively save network bandwidth and compensate for DoS attacks, which ensures the stability of NCSs. Meanwhile, a closed-loop system with an observer-based event-triggered predictive control scheme for analysis is created. Through linear matrix inequality (LMI) and the Lyapunov function method, the design of the controller, observer and event-triggered matrices is established, and the stability of the scheme is analyzed. The results show that the proposed solution can effectively compensate DoS attacks and save network bandwidth resources by combining event-triggered mechanisms. Finally, a smart grid simulation example is employed to verify the feasibility and effectiveness of the scheme’s defense against DoS attacks.

Highlights

In recent years, with the development of computer networks and wireless communication technology, the rapid development of network control systems (NCSs) has led to a new round of industry change.With the emergence of 5G technology, more control systems can be combined with networks, and remote closed-loop networked control systems (NCSs) can be formed through the network transmission of signals, which has been widely used in actual production [1,2,3]
With the emergence of 5G technology, more control systems can be combined with networks, and remote closed-loop NCSs can be formed through the network transmission of signals, which has been widely used in actual production [1,2,3]
This paper studies the problem of event-triggered control based on a static observer in networked control systems (NCSs) under DoS attacks

Summary

Introduction

With the development of computer networks and wireless communication technology, the rapid development of network control systems (NCSs) has led to a new round of industry change. With the emergence of 5G technology, more control systems can be combined with networks, and remote closed-loop NCSs can be formed through the network transmission of signals, which has been widely used in actual production [1,2,3]. The combination of networks and control systems greatly improves the flexibility of all connected system devices. All system equipment can be connected through a wired or wireless network, replacing the original point-to-point control structure [9,10,11]. Because the network is introduced during the control loop, a series of network problems (limited bandwidth resources, data dropout, etc.) are introduced into the control system, which greatly

Objectives

Methods

Findings

Conclusion