Residual life prediction method for k/n(g) system when unit life obeys Weibull distribution

A Weibull distribution, unit life technology, applied in forecasting, manufacturing computing systems, design optimization/simulation, etc., can solve problems such as the lack of remaining life prediction technology, and achieve the effect of solving the remaining life prediction problem with simple steps and easy operation

Active Publication Date: 2020-08-07
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0010] Aiming at the problem in the prior art that the remaining life prediction technology of the k / n(G) system is lacking when the unit life obeys the Weibull distribution, the present invention provides a remaining k / n(G) system when the unit life obeys the Weibull distribution Life Prediction Methods

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  • Residual life prediction method for k/n(g) system when unit life obeys Weibull distribution
  • Residual life prediction method for k/n(g) system when unit life obeys Weibull distribution
  • Residual life prediction method for k/n(g) system when unit life obeys Weibull distribution

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[0061] In order to make the purpose, technical solution and advantages of the disclosed invention more clear, the present invention will be further described in detail below in conjunction with specific embodiments and according to the accompanying drawings. It should be noted that, in the drawings or descriptions in the specification, the content not described and some English abbreviations are the content well known to those of ordinary skill in the art. Some specific parameters given in this embodiment are only for demonstration, and the values ​​may be correspondingly changed to appropriate values ​​in different real-time manners.

[0062] The momentum wheel is a key component of the satellite attitude control system, which is essentially an electromechanical product, so the life of a single momentum wheel obeys the Weibull distribution [References: Liu Qiang, Huang Xiuping, Zhou Jinglun, Jin Guang, Sun Quan. Momentum wheel shell based on failure physics YES reliability as...

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Abstract

The invention provides a method for predicting the remaining life of a k / n(G) system when the unit life obeys the Weibull distribution. First, N samples of k / n(G) system constituent units are randomly selected for a life test, and the failure of each sample is obtained. Time, to estimate the failure probability of the failure time of each sample; calculate the point estimation of the life distribution parameters of the components of the k / n(G) system based on the horizontal error function; predict the point estimation of the life distribution parameters of the components of the k / n(G) system k / n(G) The remaining lifetime of the system. The present invention well solves the remaining life prediction problem of the k / n(G) system when the unit life obeys the Weibull distribution through the above steps, and has simple steps, clear results and easy operation.

Description

technical field [0001] The invention belongs to the field of remaining life prediction, and in particular relates to a method for predicting the remaining life of a k / n (G) system composed of units whose life obeys Weibull distribution. Background technique [0002] Reliability refers to the ability of a product to complete specified functions under specified conditions and within specified time [References: Guo Bo, Wu Xiaoyue. System Reliability Analysis [M]. Changsha: National Defense University Press, 2002:5-6 .]. Reliability evaluation is an important part of reliability research. The indicators for evaluating reliability include reliability, life, and remaining life. The remaining life represents the remaining normal working time of the product after the current moment. [0003] Reliability is an inherent attribute of a product and an important indicator to measure product quality. Therefore, product reliability is very important, especially in the field of national de...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q10/04G06Q50/04G06F17/15G06F17/18G06F119/04
CPCG06F17/15G06F17/18G06Q10/04G06Q50/04G06F2119/04G06F30/20Y02P90/30
Inventor 贾祥程志君
Owner NAT UNIV OF DEFENSE TECH
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