航天器环境工程2017，Vol.34Issue(4)：439-445,7.DOI:10.3969/j.issn.1673-1379.2017.04.018
基于多元性能加速退化的航天器DC/DC电源寿命评估方法研究
The life estimation method for spacecraft DC/DC power supply based on
multivariable accelerated performance degradation data
王浩 1周月阁 1刘守文 1陈金明1
作者信息
- 1. 北京卫星环境工程研究所,北京 100094
- 折叠
摘要
Abstract
To determine the multi-performance degradation characteristics of the spacecraft DC/DC power supply, this paper proposes a life evaluation method based on the accelerated multivariate performance degradation by using the Wiener process and the accelerated model to establish the accelerated performance degradation model. The multivariate performance degradation data are analyzed by the Copula function with consideration of the correlation between the performance degradation processes. A certain model of the DC/DC power supply is taken as an example. The activation energy of the product and the life estimation under the usage thermal profile are obtained based on the test data. This novel scheme provides a new approach of the life estimation for the spacecraft products which typically with small sample quantity and long life.关键词
航天器/DC/DC电源/加速试验/寿命评估Key words
spacecrafts/DC/DC power supply/accelerated test/life estimation分类
航空航天引用本文复制引用
王浩,周月阁,刘守文,陈金明..基于多元性能加速退化的航天器DC/DC电源寿命评估方法研究[J].航天器环境工程,2017,34(4):439-445,7.
