For many products,distributions of their life mostly comply with increasing failure rates in average(IFRA).Aiming to these distributions,using properties of IFRA classification,this paper gives a non-parametric method...For many products,distributions of their life mostly comply with increasing failure rates in average(IFRA).Aiming to these distributions,using properties of IFRA classification,this paper gives a non-parametric method for processing zero-failure data.Estimations of reliabilities in any time are first obtained,and based on a regression model of failure rates,estimations of reliability indexes are given.Finally,a practical example is processed with this method.展开更多
为解决装备贮存可靠度评估问题,对寿命分布为平均失效率递增类分布(increasing failure rates on the average,IFRA)的装备的贮存可靠性进行分析。首先,针对装备检测过程中可能出现的无失效数据情况,确定了失效概率的先验分布并给出了Ba...为解决装备贮存可靠度评估问题,对寿命分布为平均失效率递增类分布(increasing failure rates on the average,IFRA)的装备的贮存可靠性进行分析。首先,针对装备检测过程中可能出现的无失效数据情况,确定了失效概率的先验分布并给出了Bayes估计。然后用加权最小二乘法给出了寿命分布的参数估计,进而得到了装备贮存可靠度的估计和表达式。最后结合实例进行计算,说明了方法的稳定性和可行性,为工程上评估装备贮存可靠度提供借鉴。展开更多
文摘For many products,distributions of their life mostly comply with increasing failure rates in average(IFRA).Aiming to these distributions,using properties of IFRA classification,this paper gives a non-parametric method for processing zero-failure data.Estimations of reliabilities in any time are first obtained,and based on a regression model of failure rates,estimations of reliability indexes are given.Finally,a practical example is processed with this method.
文摘为解决装备贮存可靠度评估问题,对寿命分布为平均失效率递增类分布(increasing failure rates on the average,IFRA)的装备的贮存可靠性进行分析。首先,针对装备检测过程中可能出现的无失效数据情况,确定了失效概率的先验分布并给出了Bayes估计。然后用加权最小二乘法给出了寿命分布的参数估计,进而得到了装备贮存可靠度的估计和表达式。最后结合实例进行计算,说明了方法的稳定性和可行性,为工程上评估装备贮存可靠度提供借鉴。
