System reliability analysis method based on interval model

An analysis method and interval model technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of consuming a lot of manpower and material resources, difficulty in obtaining complex system experimental data, etc., and achieve the effect of reducing costs

Inactive Publication Date: 2019-03-19
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] The purpose of this disclosure is to provide a system reliability analysis method based on an interval model, and then to overcome at least to a certain extent the occurrence probability of basic events in reliab...

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  • System reliability analysis method based on interval model
  • System reliability analysis method based on interval model
  • System reliability analysis method based on interval model

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[0063] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0064] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc; the terms "comprising" and "have" are used to indicate an open and means that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. only Used as a marker, not a limit on the number of its objects.

[0...

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Abstract

The invention discloses a system reliability analysis method based on an interval model, which comprises the following steps of: establishing a system failure fault tree model; calculating a top eventoccurrence probability expression of the failure fault tree through the failure fault tree; acquiring a probability interval of occurrence of a bottom event of the failure fault tree; Calculating theoccurrence probability interval of the top event according to the occurrence probability expression of the top event and the occurrence probability interval of the bottom event; According to the occurrence probability interval of the top event and the preset reliability standard, whether the system is reliable or not is judged. It solves the problem that when analyzing the reliability of the system through the occurrence probability of the basic event, the occurrence probability of the basic event needs to be obtained through a large number of experimental statistics, which leads to the difficulty of obtaining the experimental data for the complex system and consumes a lot of manpower and material resources, and reduces the cost of the reliability analysis of the system.

Description

technical field [0001] The present disclosure relates to the technical field of system reliability, in particular, to a system reliability analysis method based on an interval model. Background technique [0002] In system reliability design, using appropriate models and indicators to obtain system reliability, and using effective importance analysis methods to obtain basic events that contribute greatly to system risk can provide strong support for reducing system risk. Improving the probability and uncertainty of these basic events can greatly increase system reliability while reducing costs in repair, maintenance, and safety management. [0003] At present, fault tree analysis is a commonly used reliability analysis method, which analyzes the reliability of the system through the occurrence probability of basic events. The occurrence probability of basic events needs to be obtained through a large number of experimental statistics. For complex systems, the experimental da...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 周长聪岳珠峰常琦张峰李海和刘付超张政
Owner NORTHWESTERN POLYTECHNICAL UNIV
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