基于参数漂移的机载设备检测间隔优化

Inspection Interval Optimization Method of Airborne Equipment with Parameters Drift Feature

为提高具有参数漂移特征设备的可靠度,开展了基于参数漂移的检测间隔优化研究。针对设备参数存在随机干扰的现象,采用异常值检验法,研究了干扰参数的剔除方法;以剔除异常值后的参数为基础,采用无偏估计方法,对设备参数的漂移系数和扩展系数进行了估计研究;建立了可靠度与参数漂移量之间的定量关系,根据设备的可靠度的要求,优化得到检测间隔值,通过实例进行了验证。

In order to improve the reliability of the equipment with parameter drift,the optimization of the inspection interval based on the parameter drift was carried out. Firstly,accordingly to the phenomenon of random interference existing in collecting equipment parameters, outlier test method was applied to eliminate the data with random interference; Secondly,based on the remaining parameters without random interference,unbiased estimation method was studied to obtain drift coefficient and expansion coefficient of parameters; Finally,the quantitative relationship between reliability and parameter drift was researched to optimize the inspection interval of equipment based on required reliability of the equipment,and the method was verified by an example.