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为有效抑制垂直升船机液压系统故障传播,基于液压系统诸结构间的相互关联性及链式连锁特点,建立故障传播模糊Petri网(FPN)模型。基于FPN基本原理,抽象表达液压系统故障传播过程;分析垂直升船机液压系统失效模式,理清故障状态间前后集的逻辑关系,建立液压系统故障传播FPN;利用故障演变规则,模糊推理液压系统故障传播路径。结合三峡升船机进行实例分析。结果表明,其液压系统故障最可能的传播路径为:控制阀损坏-系统无法保压-启闭油缸失效-船厢门液压启闭机故障-系统退出工作。
In order to effectively suppress the fault propagation of hydraulic system of vertical shiplift, a Fault Propagation Fuzzy Petri Net (FPN) model is established based on the interrelationship among the structures of the hydraulic system and the characteristics of chain chain. Based on the FPN basic principle, the fault propagation process of the hydraulic system is abstractly expressed. The failure modes of the hydraulic system of the vertical shiplift are analyzed, and the logical relations between the front and back sets of the fault status are analyzed. The fault propagation FPN of the hydraulic system is established. Using the fault evolution rules, Fault propagation path. Combined with Three Gorges Ship Lift Machine Case Analysis. The results show that the most probable propagation path of hydraulic system fault is as follows: the control valve is damaged - the system can not keep the pressure - the hydraulic cylinder fails - the hydraulic door hoist failure - the system exits.