基于高储能密度电容退化数据的可靠性评估

 根据强激光能源模块高储能密度电容器在工作过程中，受到连续冲击而使退化失效具有累积效应的特点，提出了利用产品运行过程中性能参数退化的信息，用复合Poisson过程对退化轨道建模并进行可靠性评估的方法。给出了模型参数的矩估计和电容器的平均退化量、可靠度、平均寿命等可靠性指标评估的Bootstrap仿真过程。并通过实例说明了该评估方法在工程中的应用。基于电容退化信息的可靠性评估方法，可以在极少甚至没有寿命数据的情况下给出客观可信的评估结果，在理论和应用上都具有重要的价值。

Reliability assessment for capacitor bank with high specific energy storage based on degradation information

For the degradation characteristic of capacitor bank used in high power laser energy module,a reliability assessment method based on compound Poisson process is proposed and the parameters of the model are obtained by moment estimation method.The reliability index,such as average degradation,reliability and average life are estimated by Bootstrap simulation method.A numerical example is given to illustrate the effectivity of the method.Compared with traditional reliability assessment method based on life data,the proposed one based on capacitor degradation information can give objective results with scarce life data or even zero failures.