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科技导报  2014 

Wiener过程在非线性退化建模中的应用

DOI: 10.3981/j.issn.1000-7857.2014.2.010, PP. 64-67

Keywords: Wiener,过程,非线性退化,时间尺度转换,电连接器

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Abstract:

针对Wiener过程为线性随机过程而产品性能退化为非线性的情况,提出一种时间尺度转换方法,首先通过时间尺度转换把非线性退化数据转换成线性退化数据,采用Wiener过程对其进行建模分析,然后通过时间尺度逆转换实现产品在原有时间尺度下的可靠性评估。给出了Wiener过程参数估计的步骤和方法,并以某型导弹电连接器的加速退化数据为例,阐述了基于时间尺度转换的Wiener过程在非线性退化建模中的应用。结果表明,时间尺度转换方法成功实现了电连接器的可靠性评估,从而拓展了Wiener过程的应用范围,为非线性退化建模提供了一种有效途径,并为退化型产品的可靠性评估提供了可行的思路。

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