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A Cyber-Physical System Planning Method for Balanced System Failure Risk

A cyber-physical system and balanced system technology, applied in the field of cyber-physical system network topology planning, can solve the complex and difficult planning of physical, communication and information systems as planning elements, single consideration of physical network or communication system, heterogeneous CPS system planning, etc. problems, to achieve the effect of improving the risk of resistance to random failures

Active Publication Date: 2020-09-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is precisely because of the complexity of the interconnection between the CPS network and the controlled object, and the dynamic change of its own network structure, that the CPS terminal is heterogeneous, and the planning of the heterogeneous CPS system has become a complex and difficult problem.
[0003] However, most of the existing planning studies only consider physical networks or communication systems, and do not take the integration of physical, communication and information systems as planning elements.

Method used

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  • A Cyber-Physical System Planning Method for Balanced System Failure Risk
  • A Cyber-Physical System Planning Method for Balanced System Failure Risk
  • A Cyber-Physical System Planning Method for Balanced System Failure Risk

Examples

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Embodiment 1

[0038] Embodiments of the present invention propose a cyber-physical system planning method that balances system failure risks, see figure 1 , the method includes the following steps:

[0039] 101: Construct a network topology with CPS master stations and terminals as nodes and communication links as edges;

[0040] 102: According to the CPS evaluation system, the expert scoring method is used to construct the judgment matrix according to the network heterogeneity characteristics, and when the judgment matrix meets the consistency requirements, the generalized node weight of the CPS network node is generated;

[0041] 103: Establish a CPS risk balance planning model, identify important network nodes based on Gaussian potential, use binary genetic algorithm to solve, and obtain new network topology;

[0042] 104: Define network performance, connectivity robustness, and average path length scales for evaluating network reliability and performance.

[0043] Among them, the eval...

Embodiment 2

[0048] The scheme in embodiment 1 is further introduced below in conjunction with specific calculation formulas and examples, see the following description for details:

[0049] 201: generalized node weight;

[0050] The heterogeneity of the actual physical system's requirements for the information system determines the importance of the network nodes in the CPS system. Based on the Analytic Hierarchy Process (AHP), the generalized quality of a CPS network node is established to measure the importance of the network element.

[0051]First, establish the hierarchical structure of the evaluation index system. Since different CPS systems have corresponding physical entities, it is necessary to establish a corresponding system structure according to the information service application of the CPS network. The information services and application objects undertaken by network elements are divided into two dimensions:

[0052] 1. The first dimension: determine the CPS carrying phys...

Embodiment 3

[0101] Below in conjunction with specific drawings, calculation formulas, and experimental data, the schemes in Examples 1 and 2 are verified for feasibility, see the following description for details:

[0102] figure 2 The Analytic Hierarchy Process used to determine generalized node weights. Using the above method, image 3 The network topology diagram of a typical application of traffic CPS is shown, after optimization, the output Figure 4 The new traffic CPS network topology shown by Figure 5 It can be seen that the Gaussian potential of the traffic CPS network is optimized and more balanced, which reduces the risk of network failure. At the same time, it can be seen from Table 2 that all parameters of the network have been significantly improved. Verify that the proposed method improves the effect of actual engineering planning, such as Figure 6 The network topology of a demonstration project of distribution network CPS is shown, after optimization, the output F...

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Abstract

The invention discloses an information physical system planning method for balancing system failure risk. The method comprises the following steps: constructing a network topology by taking a CPS primary station and a terminal as nodes and taking a communication link as a side; according to an evaluation system of the CPS, judging matrix according to the network heterogeneity characteristic construction by using an expert scoring method; when judging that the matrix satisfies a consistency requirement, generating the general node weight of a CPS network node; establishing a CPS risk balancing planning model, performing the important identification on the network node based on the Gaussian potential, and resolving by using a binary genetic algorithm so as to acquire a new network topology; defining the network efficiency, the communication robustness and the average path length scale for evaluating the reliability and the efficiency of the network. By using the method disclosed by the invention, the network efficiency and the capacity of resisting the failure risk are improved, the complicated CPS network planning is realized, and the method is suitable for CPS application environments with different scales and characteristics.

Description

technical field [0001] The invention relates to the application field of cyber-physical systems, in particular to a novel cyber-physical system network topology planning method, which belongs to the technical field of network topology. Background technique [0002] Cyber ​​Physical System (CPS) is a new type of intelligent complex system deeply coupled with multi-dimensional heterogeneous perception, communication and computing units and physical equipment. It is a key supporting technology to realize the observability and complex dynamic control of large-scale information networks. . Analysis of CPS network requirements shows that CPS observation-control objects are diverse, including: monitoring equipment, measurement equipment, user-oriented smart meters and terminals, relay servers and information processing units that aggregate information flows, etc. It is precisely because of the complexity of the interconnection between the CPS network and the controlled object, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W24/02H04W24/06
CPCH04W16/18H04W24/02H04W24/06
Inventor 杨挺黄志勇冯瑛敏盆海波张亚健牛宇卿
Owner TIANJIN UNIV
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