故障及经济相关下动车组系统动态成组维护策略

为探究不同运量需求影响下动车组复杂系统成组维护策略,基于故障链理论分析部件间故障传递过程,建立故障相关影响下部件可靠度衰退模型。引入运量需求因子描述动态运量需求,建立考虑运量需求的部件维护调整成本模型,基于动态成组方法对部件维护活动进行合并,构建考虑运量需求的动车组复杂系统动态成组模型。算例结果表明:考虑故障相关性对可靠度评估更为科学,同时动态成组方法可以较好的适应运量需求,能够进一步提升动车组系统维修经济性。

Dynamic group maintenance strategy of EMU system under failure and economic dependence

In order to discuss the group maintenance strategy of EMU complex system under the influence of different traffic demand, based on the theory of fault chain, the process of fault related transmission between components was analyzed. The reliability decline model of components under the influence of failure dependence was established. The demand factor of traffic volume was introduced to describe the dynamic demand of traffic volume. Besides, the component maintenance and adjustment cost model considering the demand of traffic volume was established. Based on the dynamic group method, maintenance activities of components were combined. Dynamic group maintenance model of EMU complex system considering traffic demand was founded. The results show that the reliability evaluation is more scientific considering the fault correlation. The dynamic group method can better adapt to the demand of traffic volume. The economics of EMU system maintenance can be further improved.