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Sensitivity Analysis Method of System Local Reliability Based on Interval Model

A technology of sensitivity analysis and interval model, which is applied in the field of sensitivity analysis of system local reliability based on interval model, can solve the problems of difficulty in obtaining system experimental data and consuming large manpower and material resources

Active Publication Date: 2022-01-04
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] The purpose of this disclosure is to provide a system local reliability sensitivity analysis method based on an interval model, and then at least to a certain extent overcome the fact that the probability of occurrence of basic events in the reliability sensitivity analysis in related technologies needs to be obtained through a large number of experimental statistics. It is difficult to obtain experimental data for complex systems, which requires a lot of manpower and material resources

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  • Sensitivity Analysis Method of System Local Reliability Based on Interval Model
  • Sensitivity Analysis Method of System Local Reliability Based on Interval Model
  • Sensitivity Analysis Method of System Local Reliability Based on Interval Model

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[0055] 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.

[0056] 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 disclosure relates to a sensitivity analysis method for local reliability of a system based on an interval model, including: establishing a system failure fault tree model; calculating the occurrence probability expression of the top event of the failure fault tree through the failure fault tree; obtaining The occurrence probability interval of the bottom event of the failure fault tree; according to the occurrence probability expression of the top event and the occurrence probability interval of the bottom event, calculate the occurrence probability interval of the top event; according to the occurrence of the top event The probability interval and the preset reliability standard are used to calculate the system reliability; according to the system reliability, the local reliability sensitivity of the first bottom event is calculated. It solves the problem that when analyzing the reliability of the system through the probability of occurrence of basic events, it is difficult to obtain experimental data and consume a lot of manpower and material resources for complex systems, and reduces the cost of system local reliability sensitivity analysis.

Description

technical field [0001] The present disclosure relates to the technical field of system reliability, and in particular, relates to a sensitivity analysis method for system local reliability based on an interval model. Background technique [0002] In system reliability design, using appropriate models and indicators to obtain system reliability, and using effective reliability sensitivity 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 sensitivity analysis method, which analyzes the reliability sensitivity of the system through the probability of occurrence of basic events, but the probability of occurrence of basic events needs to be obtained through a ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/00
CPCG06F11/008
Inventor 周长聪岳珠峰常琦张峰李海和刘付超张政
Owner NORTHWESTERN POLYTECHNICAL UNIV