Network control system security control method based on hybrid triggering under multi-network attacks

Abstract

The invention discloses a network control system security control method based on hybrid triggering under multi-network attacks. On the basis of the prior art, the invention provides a network controlsystem security controller design method based on a hybrid triggering mechanism under a hybrid network attack background. A time triggering mechanism and an event triggering mechanism are introducedto reduce the network load while the influence of DoS attacks and spoofing attacks on the network security is considered, so that the security and stability of the control system are ensured, the occupation of network bandwidth by transmission data is reduced, and the data transmission efficiency of the system is improved. Based on the newly established system model, the gain of the controller isobtained by utilizing a linear matrix inequality and a Lyapunov stability theory, so that the requirement on network bandwidth is reduced while the stability of the system is ensured.

Description

technical field [0001] The invention belongs to the field of network control, in particular to a mixed trigger-based security control method for a network control system under multiple network attacks and a design method for a network control system controller under multiple network attacks. Background technique [0002] The network control system is a closed-loop feedback loop connected by system components such as sensors, controllers, and actuators distributed in different locations through a communication network. Compared with traditional control systems, networked control systems have significant advantages in terms of cost, maintainability, power, and reliability, so they are widely used in smart grids, transportation networks, and other systems. But at the same time, the limited network bandwidth also brings problems such as data packet loss and delay to the control system, which seriously affects the performance and stability of the system. [0003] The scope of ap...

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Problems solved by technology

[0005] Aiming at the current problems, the present invention provides a method for designing a security controller of a network control system based on a hybrid trigger mechanism under the background of hybrid network attacks on the basis of the prior art, taking into account the influence of DoS attacks and spoofing attacks on network security At the same time, the time trigger mechanism and event trigger mechanism are introduced to reduce the network load, ensure the safety and stability of the control system, reduce the occupation of network bandwidth by transmission data, and improve the efficiency of system data transmission

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