由模糊性能可靠性确定长贮装备检测周期的方法

A method of ensuring material testing period based on fuzzy reliability

装备在长期贮存中的性能会有不同程度的下降,其中性能参数的漂移是一主要原因。利用模糊理论将性能参数漂移的动态范围模糊化,建立模糊隶属函数,并结合数理统计中参数估计的理论,以检测周期为变量,建立了长贮装备的性能参数模糊可靠度预计模型。把该模型应用于确定某型水下航行器贮存期性能参数的故障检测周期,通过实例论证了此方法的优越性和实用性。

The reliability of material in storage will go down with time. The main reason is parameter drift of characteristics. Considering the fuzzy information on parameter drift of characteristics, we present the fuzzy subordinate function. And applying the theory of parameter estimation in statistics, we give a model predict characteristics fuzzy reliability. For a given reliability, we can get the optimal testing period with this modal. This is proved to be practical and ascendant by an example of underwater vehicle.