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Method for conducting multi-state system task reliability modeling on basis of performance model

A multi-state system and reliability technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as multi-state systems that have not yet been discovered, and achieve improved accuracy and computational efficiency, completeness and accuracy. The effect of a wide range of properties and applicability

Active Publication Date: 2018-06-29
CHINA AERO POLYTECH ESTAB
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Problems solved by technology

[0005] By searching the existing literature, no domestic scholars have proposed a modeling method based on the performance model to construct the fault transfer relationship for the task reliability analysis and evaluation of the multi-state system

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  • Method for conducting multi-state system task reliability modeling on basis of performance model
  • Method for conducting multi-state system task reliability modeling on basis of performance model
  • Method for conducting multi-state system task reliability modeling on basis of performance model

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Embodiment Construction

[0056] Exemplary embodiments, features, and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0057] The invention provides a method for modeling the task reliability of a multi-state system based on a performance model, which includes the following steps:

[0058] S1. Collect design information of the target multi-state system: the design information includes working principle, structural composition, working condition information, performance indicators, structural parameters, sample parameters and test data.

[0059] S2. Establishing a target multi-state system performance model: it includes the following sub-steps:

[0060] ①Modularize the system; ②Based on the principle of ...

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Abstract

The invention provides a method for conducting multi-state system task reliability modeling on the basis of a performance model. The method includes the following steps of S1, collecting design information of a target multi-state system; S2, building the performance model of the target multi-state system; S3, determining failure criteria of the target multi-state system; S4, conducting analysis and modeling on an failure pattern of the target multi-state system; S5, obtaining information of failures of the target multi-state system; S6, conducting failure injection and simulation on the targetmulti-state system; S7, conducting reliability analysis and evaluation on tasks of the target multi-state system, wherein a task reliability simulation evaluation method of the failure injection based on a time sequence is utilized for calculation to obtain a mean time between critical failures (MTBCF) and mission reliability (MR) of the target multi-state system. By constructing a failure transfer relation among failure mechanisms, key parameters, component performance and the system failure criteria from bottom to top to conduct task reliability analysis and evaluation of the multi-state system, better integrity and accuracy are achieved.

Description

technical field [0001] The invention relates to the technical field of reliability research, in particular to a method for modeling the task reliability of a multi-state system based on a performance model. Background technique [0002] A multi-state system is a system that has a certain number of performance levels when performing a specified task. Generally, a system with the following conditions can generally be regarded as a multi-state system: ①When the two-state (working or failure) components that make up the system have a cumulative effect on the overall performance of the system, such as a k-out-of-n system; ②The system components Component failures can lead to a reduction in the overall performance level of the system as performance levels degrade over time (fatigue, partial failure) or as environmental conditions change. [0003] Mission reliability refers to the ability of the product to complete the specified functions within the specified mission profile, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 占自涛任占勇曾晨晖王如平王陶胡玉彬刘晓东张小波田启龙
Owner CHINA AERO POLYTECH ESTAB
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