基于指数分布和RAMS的地铁列车车门可靠性研究

以预防和减少地铁车门故障为目的,根据上海地铁13号线路3年车门故障统计数据,利用指数分布函数对3年车门故障时间间隔进行分析.结合可靠性、可用性、维修性和安全性(RAMS)中的可靠性理论,分析3年车门的可靠性,以列车车门综合可靠度为目标,提出确定车门预防性检修周期的方法.结果表明:3年车门故障时间间隔都服从指数分布函数;...

Study on reliability of metro vehicle doors based on exponential distribution and RAMS

For the purpose of preventing and reducing metro door failures, an exponential distribution function was used to analyze the door failure time intervals based on statistical data of three-year door failures on Shanghai metro line 13. Combined with the reliability theory in RAMS, the reliability of doors in three years was analyzed, and a method to determine the preventive maintenance cycle of doors with the comprehensive reliability of train doors as the goal was put forward. The results show that the three-year door failure time interval obeys exponential distribution function and door failure rate determines the reliability of the door. The smaller the door failure rate, the higher the reliability of the door and the longer the working time of the door; otherwise the shorter the working time of the door. It was suggested that in addition to the daily necessary maintenance of train doors, dynamic preventive maintenance cycle can be obtained according to the annual door failure data, so that the preventive maintenance cycle can be set in a specific year, thus improving the reliability of train doors. The method can provide a reference for improving the reliability of the door.