摘要
"长期贮存,一次使用"的军事应用需求使得光纤陀螺的贮存寿命越来越受到关注,采用基于多元性能退化量的方法来综合评估光纤陀螺的贮存寿命;首先分析了光纤陀螺主要性能退化参数,其次采用Wiener过程对光纤陀螺的退化进行建模,并给出参数估计和可靠度函数,接着介绍了利用协方差矩阵进行可靠度函数融合的具体方法,最后利用前述方法对光纤陀螺贮存可靠性进行综合评估;光纤陀螺在55℃进行贮存时,同时考虑零偏、零漂和标度因数之间的相关性时,贮存寿命为38 100 h,假设各参数之间相互独立,贮存寿命为16 000 h;试验结果表明,当产品具有多个性能退化量时,采用基于多元性能退化量的综合评估方法对产品的评估更加全面、合理。
To the storage life of Fiber Optical Gyroscope （FOG） was given more and more attention for its military application. We used multivariate performance degradation data to assess the storage life of FOG. First, the main performance degradation parameters of FOG were analysed. Secondly, the degradation of FOG was modeled with Wiener process, while parameter estimation and the reliability function was given. Thirdly, the concrete method of reliability of function integration through the covariance matrix was introduced. Finally, the storage reliability of FOG was comprehensively evaluated with method which was proposed in this paper. Obtained results show that, in ambient environment of 55~C, the storage life was about 38100 h and 16000 h as considering the dependence and independence of FOGs＇ multivariate degradation data, respectively. Experimental results showed that when the product had multivariate performance degradation parameters, the comprehensive assessment of product based on multivariate degradation data was more comprehensive and reasonable.
出处
《计算机测量与控制》
北大核心
2014年第2期446-449,共4页
Computer Measurement &Control
关键词
光纤陀螺
贮存可靠性
多元性能退化量
综合评估
fiber--optic gyroscope
storage reliability
multivariate performance degradation data3 comprehensive assessment
