摘要
针对常规分析法无法直接求解圆柱正弦活齿传动这个复杂系统可靠性的问题,提出了基于故障树最小割集求解系统可靠性的仿真方法。根据圆柱正弦活齿传动的结构特点,给出了系统的功能方框图,建立了系统的故障树模型。求出了故障树的最小割集,计算了系统累计失效概率和失效概率密度,拟合出了系统寿命的不同分布类型函数,根据残差平方和最小原则初步确定系统寿命分布函数,对其进行了K-S假设检验,从而最终确定圆柱正弦活齿传动寿命分布函数为威布尔分布,通过模式重要度分析,确定了系统薄弱环节。
In view of the problem that the conventional analysis method cannot directly solve reliability problem of the complex cylinder sine oscillating tooth transmission system,a simulation method based on minimal cut sets of fault tree is proposed,which can solves system reliability.According to the structural characteristics of cylinder sine oscillating tooth transmission,the function block diagram of the system is given and the fault tree of the system is built.The minimal cut sets of the fault tree are acquired,and the cumulative failure probability and the probability density are calculated.Different types life distribution function of the system are fitted out.The life distribution function is determined preliminarily based on the principle of minimum residual sum of squared,and the K-S hypothesis testing is carried out for the life distribution function,which ultimately determine life distribution function of cylinder sine oscillating tooth transmission is Weibull distribution.The weak links of cylinder sine oscillating tooth transmission system are determined by analysis of model importance.
出处
《机械传动》
CSCD
北大核心
2015年第11期142-144,169,共4页
Journal of Mechanical Transmission
基金
湖北省教育厅科研项目(B2013284)
关键词
故障树
最小割集
蒙特卡洛法
K-S假设检验
Fault tree Minimal cuts set Monte Carle method K-S hypothesis testing
