高速动车组列车齿轮箱的故障树分析与仿真

Fault Tree Analysis and Simulation of High Speed Train Gear Box

齿轮箱是高速动车组列车驱动系统中的关键零部件,在高速列车运行过程中容易出现故障导致安全隐患。以可靠性理论中的故障树方法为基础,深入分析了高铁齿轮箱的运行特点和故障模式,建立了高铁列车齿轮箱系统失效的故障树模型,进行了定性分析和定量计算,采用蒙特卡罗仿真方法得出了齿轮箱系统的平均寿命,采用框架表示法和规则表示法融合的方式设计出了适于故障树数据处理的知识数据库,有效提高了高铁齿轮箱故障诊断系统的灵敏度和可靠性。

Gearbox plays a key role in the drive system of high-speed EMU train. It is prone to failure during the operation. It analyzed the operating characteristics and failure mode of high speed gearbox based on the fault tree method, a fault tree model for the failure of the gear box system of high speed railway is established, makes qualitative analysis and quantitative calculation, and obtained the mean time between failures by means of Monte Carlo simulation. A database which is suitable for fault tree data processing is designed, it can improve the sensitivity and reliability of the fault diagnosis system of high speed railway gear box.