轨道交通屏蔽门可靠性指标的确定及验证

Decision and Verification on Reliability Index of PSD in Rail Transit

针对屏蔽门产品在传统设计中缺乏可靠性定量分析和验证的不足,研究了指数寿命拟合优度检验方法及确定屏蔽门可靠度模型的一般程序,提出了确定可靠性定量指标的基本方法,分析了不同故障次数、不同置信度水平对可靠性验证结果的影响,从而给出了屏蔽门在特定时间和特定条件下可靠工作的预期。研究结果表明:屏蔽门在一定时间内的可靠度与其使用频率有较大关系,工程设计中应根据屏蔽门的应用特点,确定屏蔽门可靠性以及单台屏蔽门的故障率。

Aiming at the conditions that PSD (platform screen door) lacks quantitative analysis and verifica-tion of reliability in traditional design, the test method of goodness-of-fit index of life and the pro-cedure determining reliability model of PSD are studied;the way determining quantitative indi-cators of reliability is put forward;the influence of reliability verification results on the number of failure and the level of confidence is analyzed;accordingly the reliability anticipation of PSD at a special time and a special condition is given out. The research shows that the reliability of PSD has much to do with its use frequency. During the engineering design, the reliability of PSD and the failure rate of every PSD should be determinated according to its using characteristic.