Reliability apriori information fusion-based estimation method for reliability of cold standby system

A priori information, reliability technology, applied in computing, computer-aided design, design optimization/simulation, etc.

Active Publication Date: 2016-03-23
NAT UNIV OF DEFENSE TECH +1
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Problems solved by technology

However, there is currently a lack of methods for estimati

Method used

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  • Reliability apriori information fusion-based estimation method for reliability of cold standby system
  • Reliability apriori information fusion-based estimation method for reliability of cold standby system
  • Reliability apriori information fusion-based estimation method for reliability of cold standby system

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Embodiment Construction

[0065] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings. Such as figure 1 Shown is the flowchart of the present invention.

[0066] (S1) Obtain the reliability prior information of the component, and convert the prior reliability information of the component into the prior distribution of component reliability;

[0067] The prior information of reliability in engineering is generally The true value of reliability R at i estimated value of engineering acquisition There are many ways, the common way is expert judgment or engineering experience. because The acquisition method is not the problem to be considered in the present invention, so in the present invention will considered as a known value. To estimate the distribution parameters according to the Bayes formula, according to the principle of Bayes theory, the reliability true value R i as a random variable, and the estimated valu...

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Abstract

The invention belongs to the field of estimation of reliability, in particular to a reliability apriori information fusion-based estimation method for reliability of a cold standby system. The method comprises the following steps: (S1) obtaining reliability apriori information of parts and converting the reliability apriori information of the parts into reliability priori distribution of the parts; (S2) converting the reliability priori distribution of the parts into priori distribution of distribution parameters; (S3) according to the priori distribution of the distribution parameters, solving posterior distribution of the distribution parameters; (S4) based on the posterior distribution of the distribution parameters, estimating the reliability of the cold standby system. The invention aims to provide a method, and when the service life of the parts accords with Weibull distribution, the method can be used for fusing the reliability apriori information of the parts, estimating the distribution parameters of the service life of the parts and further estimating the reliability, taking k parts from n same parts, of the cold standby system consisting of n parts, thus better solving the problem of estimation on the reliability of the cold standby system consisting of the parts after the reliability apriori information of the parts is fused.

Description

technical field [0001] The invention belongs to the field of reliability evaluation, and in particular relates to a method for estimating the reliability of a cold standby system based on fusion of reliability prior information. Background technique [0002] Reliability refers to the ability of the product to complete the specified functions under the specified conditions and within the specified time (specific references: Guo Bo, Wu Xiaoyue. System Reliability Analysis [M]. Changsha: National Defense University Press, 2002: 5- 6.); It is the inherent attribute of the product and an important indicator to measure the quality of the product. The probability measure of reliability is called reliability, and sometimes it is often used to measure the life of the product. Correspondingly, a product that loses its specified function under specified conditions is called a failure. With the development of modern science and technology, there are more and more components that make ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2117/02
Inventor 蒋平贾祥王晶燕陈浩李梁张洋王小林宫颖韩磊于远亮张兆国何正文龚时雨程志君郭波刘国强
Owner NAT UNIV OF DEFENSE TECH
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