基于复合应力加速寿命试验的高速列车电子产品可靠度计算方法研究  

Reliability Calculation Method of High Speed Train Electronic Products Based on Composite Stress Accelerated Life Test

作　　者：周永刚 王鹏 ZHOU Yong-gang;WANG Peng(CRRC Zhuzhou Electric Locomotive Research Institute Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]中车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《装备环境工程》2022年第3期101-105,共5页Equipment Environmental Engineering

基　　金：国家科技支撑计划(2015BAG14B00)。

摘　　要：目的 解决目前加速寿命试验一般不用于估计产品可靠度,而采用可靠性预计和应力-强度模型计算可靠度时可能存在因参数误差而影响其估计精度的问题。方法 提出一种基于加速寿命试验的高速列车电子产品使用可靠度计算方法,采用温度、湿度、振动综合应力和广义Egring模型对高速列车电子产品开展加速寿命试验。结果 通过试验数据可评估出产品在任意寿命和任意温度、振动、湿度环境应力下使用时的可靠度。结论 拓展了加速寿命试验的应用范围,优化了可靠度计算的方法与准确性。This paper aims to solve the problem that the current accelerated life test is generally not used to estimate the reliability of the product. However, the accuracy of the estimated reliability may be affected by the error of parameters. This paper proposes a method for calculating the reliability of high-speed train electronic products based on accelerated life tests. The product reliability calculation method is adopted. The method uses the temperature, humidity, vibration combined stress and generalized Egring model to carry out accelerated life tests on high-speed train electronic products. Through the test data, the reliability of the product can be evaluated under any life and any temperature, vibration and humidity environmental stress. The reliability under use expands the application range of the accelerated life test and optimizes the method and accuracy of reliability calculation.

关 键 词：加速寿命试验 可靠度 WEIBULL分布 加速模型 温度-湿度-振动应力 广义Egring模型 

分 类 号：TB115[理学—数学]