累积冲击作用下可恢复退化过程的可靠度评估

发布时间：2018-02-16 22:45

本文关键词： 产品评估可靠度评估退化过程 Wiener过程泊松冲击累积冲击　出处：《光学精密工程》2017年07期 　论文类型：期刊论文

【摘要】：以对激光器进行可靠度评估为背景,在考虑累积冲击与自然退化同时引起产品失效的基础上,重点研究了冲击时间间隔对产品退化量的影响,建立了累积冲击作用下可恢复的退化模型。根据自然退化过程及泊松冲击更新理论,研究了累积冲击模型和累积冲击下的退化失效模型。引入条件分布,分析冲击时间间隔对退化量的影响,得出了累积泊松冲击下的可恢复退化失效模型。结合性能退化分析,给出了可恢复的退化过程的失效分布函数和可靠度函数。进行了激光器退化试验,结果表明:当激光器工作2 000h时,利用累积冲击下可恢复的退化失效模型评估得到的可靠度为0.53,与仿真结果相符,为利用累积冲击下退化失效模型评估得到的可靠度的2.79倍。结果验证了本文提出的利用可恢复的退化模型进行可靠度评估的合理性。
[Abstract]:Based on the reliability evaluation of laser, the effect of impact time interval on product degradation is studied on the basis of considering that cumulative shock and natural degradation cause the product failure at the same time. According to the natural degradation process and Poisson impact renewal theory, the cumulative impact model and the degradation failure model under cumulative shock are studied. The conditional distribution is introduced. By analyzing the effect of impact time interval on degradation quantity, a recoverable degradation failure model under cumulative Poisson impact is obtained. The failure distribution function and reliability function of the recoverable degradation process are given. The laser degradation test is carried out. The results show that when the laser is working for 2 000 h, The reliability obtained by using the recoverable degenerative failure model under cumulative impact is 0.53, which is consistent with the simulation results. In order to evaluate the reliability of the degradation failure model under cumulative impact by 2.79 times, the result verifies the rationality of the reliability evaluation proposed in this paper by using the recoverable degradation model.
【作者单位】：哈尔滨理工大学测控技术与通信工程学院;
【基金】：国家自然科学基金青年基金资助项目(No.61501149) 黑龙江省自然科学基金资助项目(No.QC2016068) 黑龙江省科技厅科研基金资助项目(No.F201305)
【分类号】：TB114.3;TN248

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