弹载激光探测器加速寿命试验与评估研究

为满足弹载激光探测器贮存寿命评估的实际需求,研究了适用于激光探测器的加速寿命试验与寿命评估方法。首先,研究影响激光探测器的贮存寿命的因素,提出加速试验方案中应力范围、寿命分布类型、应力施加方式、试验时间等因素设计准则,其次基于极大似然法计算加速模型参数,通过寿命分布类型检验判定加速试验方案的合理性,最后利用加速因子折合寿命试验数据,实现贮存寿命评估,本文研究内容为激光探测器贮存寿命评估提供借鉴。

Study on accelerated life test and evaluation of missile borne laser detectors

In order to evaluate the storage life of missile borne laser detectors,the research on accelerated lifetime test(ALT)and life evaluation method were carried out,which are applied for photoelectric detector.First,factors that affect the storage life of photoelectric detector were analyzed,stress level,distribution of storage life,stress order and test time were designed.Then,the method of parameter evaluation based on accelerated model and maximum likelihood estimation(MLE)were proposed,and the method to estimate the effectiveness of ALT based on distribution test was given.Finally,using acceleration factor to transform the storage life testing data,the storage life evaluation was provided.The research of the paper can be used as a reference for photoelectric detectors of the same type.