基于Kendall协同系数的产品加速试验失效机理一致性统计检验

Statistical test of failure mechanism consistency of product in accelerated test based on Kendall synergy coefficient

针对加速退化试验中产品失效机理一致性检验的问题,以退化曲线轨迹一致性为出发点,结合非参数统计中Kendall协同系数检验方法,构造出反映性能参数退化量变化速率的检验统计量,分析W系数的内涵,对产品失效机理一致性进行检验.通过某电子设备退化数据以及线性、凸形、凹形3种退化轨迹的仿真数据,验证本文中提出的统计模型的可行性和有效性.

As the problem of product failure mechanism consistency test in accelerated degradation test,starting from the consistency of the degradation curve trajectory and combining the Kendall synergy coefficient testing method in non-parametric statistics,we constructed a test statistics reflecting the change rate of performance parameter degradation,analyze the connotation of the W coefficient and test the consistency of the product failure mechanism.The feasibility and effectiveness of the statistical model proposed in this paper were verified through simulation examples of the degradation data of an electronic device and the three degradation trajectories of linear,convex and concave.