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A Method for Analyzing Networked Fault Occurrence Process

A technology of fault occurrence and analysis method, which is applied in the field of safety system engineering and can solve problems such as inability to analyze space fault tree theory and inability to express

Active Publication Date: 2020-12-01
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It cannot be expressed in the form of a fault tree, and it cannot be analyzed using the spatial fault tree theory

Method used

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  • A Method for Analyzing Networked Fault Occurrence Process
  • A Method for Analyzing Networked Fault Occurrence Process
  • A Method for Analyzing Networked Fault Occurrence Process

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Experimental program
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Embodiment Construction

[0029] 1 basic definition

[0030] The processing of spatial fault network needs the help of SFT theory, so the basic definition of spatial fault network is borrowed from SFT.

[0031] Definition 1: Space Fault Network (SFN): A topology composed of system fault events. Expressed by W=(X, L, R, B, BS), where X represents the set of nodes in the network, that is, events; L represents the set of connections in the network; R represents the set of network spans; B represents the set of network width; BS represents Boolean algebra system. Spatial fault network can be divided into non-ring structure, multi-directional ring network structure and unidirectional ring network structure according to different topological structures describing fault events.

[0032] Definition 2: Node: A node in SFN represents an event in the fault occurrence process. Multiple nodes in the fault network can represent the same event, but not the same event; but one occurrence of an event corresponds to o...

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Abstract

The invention discloses an analysis method for a network fault occurrence process. The analysis method is characterized by that a space fault network can describe a relatively complex fault occurrenceprocess and a mode of describing causality among events through a network topology is relatively generalized; a definition and a characteristic of the space fault network and a conversion method between the space fault network and a space fault tree are provided, and a fault transfer probability is taken into consideration; fault networks of a general structure, a multidirectional ring structureand an unidirectional ring structure, different fault occurrence process features represented by the fault networks, and corresponding fault tree conversion methods are provided; a final event probability computing method is provided; and the analysis method is particularly applied to the research of the fault occurrence process of the general network structure.

Description

technical field [0001] The invention relates to the field of safety system engineering. Especially when it involves the research of complex fault occurrence process. Background technique [0002] Fault tree is one of the basic theories of safety system engineering. It is extremely important in the field of system reliability research today, and it is also the focus of academic research. Many scholars have applied the fault tree theory in different aspects and proposed improved methods. However, these studies are difficult to analyze the reliability characteristics of the system under the influence of multiple factors, and do not have the ability of logical analysis and big data processing. Therefore, the spatial fault tree theory is proposed, but the basis of the spatial fault tree is the classical fault tree, which is a fault causality representation method with a tree structure. However, the actual fault development process often cannot be expressed in the form of an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/06H04L41/0636H04L41/065H04L41/14H04L43/045
Inventor 崔铁军李莎莎王伟
Owner LIAONING TECHNICAL UNIVERSITY