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Multi-sensor attack identification method of networked motion control system

A technology of motion control system and identification method, which is applied in the field of multi-sensor attack identification, can solve the problems of poor accuracy and achieve the effect of satisfactory identification accuracy

Active Publication Date: 2019-12-03
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of poor accuracy existing in the existing detection methods, the present invention provides a multi-sensor attack identification method for a networked motion control system. The attack signal can be accurately identified, and the method is not limited by the number of system outputs, and the identification result can meet the accuracy of practical application

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  • Multi-sensor attack identification method of networked motion control system
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[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and actual experiments.

[0033] Reference Figure 1-Figure 5 , A multi-sensor attack identification method for a networked motion control system. Firstly, the motion control system is modeled and its transfer function is determined; the system transfer function is converted into a state space model; the network attack in the system is then considered. The output signal of the sensor attack is decomposed by EMD; finally, Fourier transform is performed on the attack signal and the corresponding decomposed component, and the spectral characteristics of the two are compared.

[0034] The present invention is a multi-sensor attack identification method of a networked motion control system, which includes the following steps:

[0035] 1) Determine the tran...

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Abstract

The invention discloses a multi-sensor attack identification method for a networked motion control system, and the method comprises the steps: carrying out the modeling of the networked motion controlsystem, and determining a transfer function; converting the system transfer function into a state space equation; carrying out EMD decomposition on the output signal containing the multi-sensor attack; and finally, performing Fourier transform on the attack signal and the decomposition component, and comparing spectral characteristics of the attack signal and the decomposition component. According to the method, the frequency of each attack signal can be accurately identified under the condition that multiple attacks happen to the system, and meanwhile, the identification result can meet theprecision of practical application.

Description

Technical field [0001] The invention belongs to the technical field of network security, and specifically provides a method for identifying a multi-sensor attack of a networked motion control system, which can identify the attack, evaluate the system situation, and ensure its safe operation. Background technique [0002] In recent years, the industrial control system (industrial control system) has undergone an important development process. Open communication protocols such as industrial Ethernet and TCP / IP have been introduced, and the connection with external networks has become closer and more frequent, which has greatly improved The intelligence and informatization of industrial control systems have also led to a series of new security challenges. Many attacks have penetrated into industrial control systems through the Internet. Security attacks in manufacturing, energy, petrochemical, water conservancy, nuclear industry control systems, and traffic control systems are not u...

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/1416
Inventor 朱俊威顾曹源张文安俞立董辉徐建明
Owner ZHEJIANG UNIV OF TECH