Design method of event-triggered controller for cyber-physical system under denial-of-service attack

Abstract

The present invention relates to an event-triggered controller design method for a cyber-physical system under a denial-of-service attack, comprising the following steps: adding a denial-of-service attack to a cyber-physical system constructed based on a T-S fuzzy model, so that the constructed cyber-physical system can be switched In order to be in the state of denial of service attack and security state; design an effective denial of service attack sub-interval, so as to design an elastic event trigger mechanism under denial of service attack, so that when the cyber-physical system suffers from denial of service attack, the controller and actuator can receive data Information; build a controller based on the T-S fuzzy model under denial of service attacks, and build a switching system based on an elastic event trigger mechanism, so that the controller can receive data during the period of denial of service attacks. The purpose of the present invention is to reduce unnecessary data packet transmission and alleviate the impact on the information physical system when the information physical system suffers from an external denial of service attack.

Description

technical field [0001] The invention relates to the technical field of cyber-physical systems, in particular to an event-triggered controller design method for cyber-physical systems under denial of service attacks. Background technique [0002] System security is a key issue for the practical application of cyber-physical systems (CPS). In cyber-physical systems, the deep integration of cyberspace and physical space brings important technical advantages, but at the same time, it also makes it possible for attackers to attack cyberspace. Invade the physical space, and then wantonly destroy the physical space. Since 2010, the number of system security accidents has increased significantly year by year, especially major industrial control network security accidents have shown explosive growth. [0003] Although many schemes consider information attacks, denial-of-service attacks (DoS attacks) are often simplified in research to cause data packet loss, or directly inject harmf...

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Problems solved by technology

[0003] Although many schemes consider information attacks, denial-of-service attacks (DoS attacks) are often simplified in research to cause data packet loss, or directly inject harmful data into cyber-physical systems, and do not go deep into the internal analysis of DoS attacks in the information space. formation and attack effects etc.

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