Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for predicting remaining life of equipment

A technology for life prediction and equipment, applied in design optimization/simulation, computer-aided design, instruments, etc., to achieve the effect of improving prediction accuracy

Active Publication Date: 2021-01-29
ROCKET FORCE UNIV OF ENG
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of relevant research on using accelerated degradation data as prior information to conduct statistical inference using condition monitoring data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for predicting remaining life of equipment
  • Method and system for predicting remaining life of equipment
  • Method and system for predicting remaining life of equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] Taking a certain type of military electrical connector as an example, verify the effectiveness of the proposed method of the present invention, the verification object includes the method for predicting the remaining life of equipment based on the fusion of accelerated degradation data and actual degradation data proposed by the present invention (denoted as m 1 ), the residual life prediction method based on Wiener process fusion accelerated degradation data and actual degradation data (denoted as M 2 ) and the remaining life prediction method based on logarithmic transformation data lnX(t) (denoted as M 3 ).

[0168] The normal working stress S of the sample 0 = 20°C, 24 samples were randomly selected, respectively under three kinds of accelerated stress S 1 =60°C, S 2 =80°C, S 3 = The accelerated degradation test was performed at 100°C, and 8 samples were assigned to each stress. Assume that at stress S 1 30 measurements are taken at intervals of 48 hours; at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an equipment residual life prediction method and system. The method comprises the following steps: establishing an equipment degradation mathematical model based on a nonlineardiffusion process; obtaining an estimated value of the equipment degradation parameter under the acceleration stress as first data; calculating a degradation parameter value under normal working stress according to the first data to obtain second data; determining the distribution type of the second data through goodness-of-fit test; obtaining a posteriori distribution function and an expected value of the second data according to the distribution type of the second data; obtaining a first residual life probability density function according to the posteriori distribution function, the expected value and the equipment degradation mathematical model; correcting the first residual life probability density function according to a total probability formula to obtain a second residual life probability density function; and predicting the residual life of the equipment according to the second residual life probability density function. The prediction precision of the residual life of the equipment can be improved.

Description

technical field [0001] The invention relates to the technical field of reliability engineering, in particular to a method and system for predicting the remaining life of equipment. Background technique [0002] In recent years, more and more long-life and high-reliability equipment have appeared in the fields of aerospace and military industry. Accurate life determination of these equipment is an important prerequisite for maintaining equipment performance and doing a good job in preventive maintenance. For such high-reliability equipment, failure is difficult to occur even in accelerated life tests, and traditional methods based on failure data cannot effectively predict the life of such equipment. Part of the performance indicators of some products will degrade with the test time. By measuring and statistically analyzing the performance degradation during the degradation process, the life information of the product can be predicted without waiting for the product to fail, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/04G06F119/14
Inventor 胡昌华庞哲楠司小胜李天梅张建勋杜党波郑建飞
Owner ROCKET FORCE UNIV OF ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com