| 基于比例风险退化模型的产品可靠性评估 |
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| 引用本文： | 苏春,张烨,张恒.基于比例风险退化模型的产品可靠性评估[J].东南大学学报,2010,26(3):480-483. |
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| 作者姓名： | 苏春 张烨 张恒 |
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| 作者单位： | 东南大学机械工程学院,南京,211189 |
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| 基金项目： | The National Natural Science Foundation of China (No.50405021) |
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| 摘 要： | 为了利用退化数据评估长寿命产品的可靠性,提出一种新的比例风险退化模型.利用时间退化数据与应力加速寿命之间的相似关系,并假定退化数据的失效概率函数是时间协变量的比例函数,从而实现基于比例风险退化模型的可靠性评估.采用最小二乘法估计模型参数.由已知时刻的退化量失效率及比例函数外推产品在特定时间、预定失效阈值下的失效率及可靠度函数.以一种长寿命GaAs激光器的退化数据为例,完成该产品的可靠性评估.结果表明：所提方法能准确描述退化过程,是长寿命产品可靠性评估的一种有效方法.
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| 关 键 词： | 退化数据 风险函数 比例风险模型 可靠性评估 |
Product reliability assessment based on proportional hazard degradation model |
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| Su Chun,Zhang Ye,Zhang Heng.Product reliability assessment based on proportional hazard degradation model[J].Journal of Southeast University(English Edition),2010,26(3):480-483. |
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| Authors: | Su Chun Zhang Ye Zhang Heng |
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| Institution: | Su Chun Zhang Ye Zhang Heng(School of Mechanical Engineering,Southeast University,Nanjing 211189,China) |
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| Abstract: | In order to evaluate the reliability of long-lifetime products with degradation data, a new proportional hazard degradation model is proposed. By the similarity between time-degradation data and stress-accelerated lifetime, and the failure rate function of degradation data which is assumed to be proportional to the time covariate, the reliability assessment based on a proportional hazard degradation model is realized. The least squares method is used to estimate the model's parameters. Based on the failure ... |
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| Keywords: | degradation data hazard function proportional hazard model reliability assessment |
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