基于MPGW分布的压力蒸汽灭菌器可靠性分析

RELIABILITY ANALYSIS OF THE PRESSURE STEAM STERILIZER BASED ON MPGW DISTRIBUTION

浴缸形状的失效率函数因其能够捕捉某些实际情境中的故障率特征,在机械结构可靠性分析中至关重要。引入一种修正广义幂威布尔(Modified Power Generalized Weibull,MPGW)分布,能够建模表征浴缸形状的失效率变化规律。为评估该模型的有效性,本研究使用了压力蒸汽灭菌器故障数据集进行实证研究,并将其性能与5种经典分布模型进行了比较,发现该模型在灵活性上具有较大优势。

The hazard rate function with a bathtub⁃shaped curve is crucial in reliability engineering due to its ability to capture certain observed failure rate characteristics in real⁃world scenarios.This study introduces a novel MPGW(Modified Power Generalized Weibull)distribution capable of modeling hazard rate function exhibiting a bathtub shape.To evaluate the effectiveness of this model,the study conducted empirical research using a dataset of pressure steam sterilizer failures and compared its performance to 5 classical distribution models,the results indicated that this model exhibits significant advantages in terms of flexibility.