基于故障行为的惯导产品贮存寿命试验设计

doi:10.13700/j.bh.1001-5965.2017.0408

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (3): 437-443.doi: 10.13700/j.bh.1001-5965.2017.0408

基于故障行为的惯导产品贮存寿命试验设计

许丹, 林坤松, 陈云霞

北京航空航天大学可靠性与系统工程学院可靠性与环境工程技术重点实验室, 北京 100083

收稿日期:2017-06-15 出版日期:2018-03-20 发布日期:2017-09-18
通讯作者: 许丹 E-mail:xudan@buaa.edu.cn
作者简介:许丹,女,博士,讲师。主要研究方向:基于故障物理的寿命建模与试验验证、加速试验;林坤松,男,博士研究生。主要研究方向:系统试验评估技术;陈云霞,女,博士,教授。主要研究方向:系统寿命设计分析与试验评估技术、寿命学。
基金资助:
国家自然科学基金（61403010）

Failure behavior based storage life test design for inertial navigation products

XU Dan, LIN Kunsong, Chen Yunxia

Science and Technology on Reliability and Environmental Engineering Laboratory, School of Reliability and Systems Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2017-06-15 Online:2018-03-20 Published:2017-09-18
Supported by:
National Natural Science Foundation of China (61403010)

摘要/Abstract

摘要： 以典型惯导产品加速度计贮存寿命评估为例，提出了一种基于故障行为模型的加速退化试验设计方法，解决了缺乏预试验数据情况下试验应力水平设计的问题。在通过对产品特性和主机理分析基础上，确定表征产品贮存寿命特征参数及试验应力，构建了考虑材料等分散性的加速度计故障行为模型，用以描述参数加速时变规律的特性。在试验应力最高水平确定的情况下，基于给定置信度和故障行为模型，以高应力水平下退化量的置信下限与低应力水平下退化量的置信上限不交叉为原则，采用基于仿真的加速退化试验设计方法，优化确定低应力和中间应力水平，从而设计给出试验剖面，并给出了加速退化试验方案优选流程，最终从备选方案集中确定加速度计试验最优方案。通过实际案例分析，验证了该方法的有效性。

关键词: 故障行为模型, 惯导产品, 试验设计, 优选方案, 加速度计

Abstract: This paper proposed a failure-behavior-model based accelerated degradation test designing method for assessing the storage life of accelerometer for inertial navigation products, which determines test stress levels while lacking of the preliminary experimental data. On the basis of analyzing the product characteristics and main mechanisms, the storage life characteristic parameters and test stress types are determined. An accelerometer failure behavior model which takes the material dispersion into consideration is established to describe the time-varying law. Given the highest stress level, based on the given confidence level and failure behavior model, a simulation accelerated degradation test design method is proposed to determine the lowest and intermediate stress levels with the constraint that the upper bound of degradation under lower stress level is lower than the lower bound of degradation under high stress level. Following the proposed framework, the experimental profile is designed, and then a best test plan is finally obtained. The validity of the proposed method is verified by a case study.

Key words: failure behavior model, inertial navigation products, test design, plan optimization, accelerometer

中图分类号:

许丹, 林坤松, 陈云霞. 基于故障行为的惯导产品贮存寿命试验设计[J]. 北京航空航天大学学报, 2018, 44(3): 437-443.

XU Dan, LIN Kunsong, Chen Yunxia. Failure behavior based storage life test design for inertial navigation products[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(3): 437-443.

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基于故障行为的惯导产品贮存寿命试验设计

Failure behavior based storage life test design for inertial navigation products

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