列车一维碰撞能量管理的综合评价模型

Comprehensive Evaluation Model for One-Dimensional Crash Energy Management of Trains

为了更科学全面地对列车碰撞能量方案进行配置和评价,以列车最大平均加速度、最大瞬时加速度和能量利用率为评价指标,利用序关系分析法和熵值法得到的主、客观指标权重推导出更加合理的综合权重系数;采用非线性加权综合法融合权重信息和评价指标信息,获得了列车一维碰撞能量管理综合评价模型;采用此模型对某型列车的15种能量配置方案进行综合评价.研究结果表明:此模型综合评价结果与各指标性能变化幅度分析结果一致,具有较好的适用性和可靠性;方案4为最优方案,其最大瞬时加速度指标性能比方案8下降14.03%,但最大平均加速度指标性能和能量利用率指标性能分别比方案8提升了4.92%和19.44%;该结果既体现了对安全性影响最大的最大平均加速度指标的重要性,又综合考虑了与经济性相关的能量利用率指标.

In order to configure and evaluate the train collision energy scheme more scientifically and comprehensively,the maximum average acceleration,maximum instantaneous acceleration and energy utilization rate of trains were taken as evaluation indexes,and a more reasonable comprehensive weight coefficient was derived by using the subjective and objective index weights obtained by the order relation analysis and entropy method.A comprehensive evaluation model of train one-dimensional collision energy management was obtained by fusing weight information and evaluation index information with nonlinear weighted synthesis method,then 15 energy allocation schemes of a certain type of train were comprehensively evaluated by using this model.The results indicate that the comprehensive evaluation results are consistent with that of the change range of all indexes,and it has better applicability and reliability.Scheme 4 is the optimal scheme,in which the maximum instantaneous acceleration index decreases by 14.03%,but the maximum average acceleration index and energy utilization rate index increase by 4.92%and 19.44%compared with scheme 8 respectively.These results both reflect the importance of the maximum average acceleration index,which has the greatest impact on safety,and comprehensively considers the energy utilization rate index related to economy.