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Safety control method for switching networked control system based on sliding mode

A technology of networked control and system security, which is applied in the field of security control of switching networked control systems based on sliding mode, and can solve problems such as lack of security defense strategies

Inactive Publication Date: 2020-06-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, research on security control issues is still in its infancy, and most of the reported literature focuses on attack detection, filtering, and state estimation, lacking effective security defense strategies

Method used

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  • Safety control method for switching networked control system based on sliding mode
  • Safety control method for switching networked control system based on sliding mode
  • Safety control method for switching networked control system based on sliding mode

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0023] Such as figure 1 As shown, the present invention relates to the modeling of switching networked control systems with nonlinear and FDI attacks and the design of security control methods based on sliding mode. Including consideration of system switching characteristics, modeling of system nonlinearity and FDI attack, system reduction processing, sliding mode function design, analysis of sliding mode dynamics, solution of sliding mode parameters, design of sliding mode controller and proof of closed-loop system stability .

[0024] Modeling of System Switching Charac...

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Abstract

The invention discloses a safety control method for a switching networked control system based on a sliding mode, and relates to switching networked control system model establishment under nonlinearand false data injection (FDI) attacks and safety control method design based on the sliding mode. The invention discloses the safety control method based on the sliding mode in order to solve the problems of nonlinearity and the FDI attacks in the switching networked control system. According to the technical scheme, the safety control method comprises the steps of system switching, nonlinear andFDI attack modeling, control system node reduction processing, sliding mode function design, sliding mode dynamic analysis, sliding mode parameter solving, sliding mode controller design and closed-loop system stability proving. According to the method, the problems of the nonlinearity and the FDI attacks in the switching network control system can be effectively solved, the safety of the systemis improved, and the stable operation of the system is ensured.

Description

technical field [0001] The invention belongs to the technical field of switching networked control systems under attack, and relates to the modeling of switching networked control systems under nonlinear and FDI attacks and the design of security control methods based on sliding mode. More specifically, more specifically, It relates to a safety control method for a switching networked control system based on sliding mode. Background technique [0002] A switched system is a hybrid system whose system parameters or system structure are varied randomly. Switched systems are widely used in various industrial controls due to their obvious advantages in modeling system structure changes, system topology changes, system node or component failures, etc. However, in a switched system, the controlled system may become unstable or control performance degraded due to the switching nature of the system. In particular, for switched networked control systems, the system is not only affe...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李猛陈勇梁洪郭斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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