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首页> 外文期刊>ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B. Mechanical Engineering >Reliability Modeling for Gear Door Lock System With Dependent Failures Based on Copula
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Reliability Modeling for Gear Door Lock System With Dependent Failures Based on Copula

机译:基于Copula的依赖失败的齿轮锁系统可靠性建模

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摘要

The gear door lock system (GDLS) is a hydraulic and mechatronic system with high degree of complexity and uncertainty, making the performance assessment of the system especially intractable. We develop copula models to estimate the reliability of GDLS with dependent failure modes. Based on the working principle of the GDLS, kinematic and dynamic model with imperfect joints is built in which Latin hyper cube sampling (LHS) and kernel smoothing density are utilized to obtain the marginal failure probabilities. Then, copula models are utilized to describe the dependence between the two function failure modes. Furthermore, to be more accurate, mixed copula models are developed. The squared Euclidean distance is adopted to estimate the parameters of the above reliability models. Finally, the Monte Carlo simulation is conducted to evaluate different reliability models.
机译:齿轮锁定系统(GDL)是一种具有高度复杂性和不确定性的液压和机电系统,使系统的性能评估尤其是棘手的。 我们开发Copula模型以估算GDL的可靠性,具有依赖的故障模式。 基于GDL的工作原理,利用拉丁超多维数据集采样(LHS)和核平滑密度来实现具有不完美关节的运动和动态模型来获得边际故障概率。 然后,使用Copula模型来描述两个功能故障模式之间的依赖性。 此外,更准确,开发了混合的Copula型号。 采用平方欧几里德距离来估计上述可靠性模型的参数。 最后,进行了蒙特卡罗模拟以评估不同的可靠性模型。

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