考虑冲击因素的间歇工作系统可靠性分析

Reliability Analysis of Intermittent Working System Considering Shock Effects

间歇工作模式广泛存在于工业生产和军事应用场景中,通过对间歇工作系统转换点退化状态随机性的定量分析,基于维纳过程建立了多阶段随机退化间歇工作系统可靠性分析模型,在此基础上,考虑随机冲击因素对间歇工作系统退化过程的影响,分别分析了环境应力冲击到达强度和冲击幅度随机特性,通过非齐次泊松过程对随机环境应力冲击进行了建模,得到了考虑冲击因素影响条件下的间歇工作系统可靠性分析模型。通过蒙特卡罗仿真实验证明了模型对状态转换点随机性和冲击随机性描述的准确性,对不同参数条件下冲击因素对间歇工作系统可靠性影响进行了灵敏度分析,实现了考虑冲击因素的间歇工作系统可靠性定量描述。

Intermittent working mode widely exists in industrial production and military application scenarios.Through the quantitative analysis of the randomness of degradation state at the transition point of intermittent working system,a reliability analysis model of multi-stage random degraded intermittent working system is es-tablished based on Wiener process.On this basis,the influence of random impact factors on the degradation process of intermittent working system is considered,the random characteristics of environmental stress impact arrival strength and impact amplitude are analyzed respectively.The random environmental stress impact model is built by non-homogeneous Poisson process,and the reliability analysis model of intermittent working system considering the impact factors is obtained.Through Monte Carlo simulation experiments,the accuracy of the model in describing the randomness of state transition points and impact randomness is proved.The sensitivity analysis of the impact factors on the reliability of intermittent working system under different parameter condi-tions is carried out,and the quantitative description of the reliability of intermittent working system considering impact factors is realized.