Train Grade Resistance Calculation Modification Model Based on Measured Data

To make train movement simulation have good correlation with practical railway transportation, the comparison between calculation results based on train traction calculation method and measured data from the train running monitor and record device is investigated in this study. According to the differences between the numerical model and actual data, the key cause leading to the inaccuracy is identified, the impacts of track layout and train formation to the calculation errors of train grade resistance are revealed. A model is subsequently proposed, which can be used to correct the calculation errors based on measured data through theoretical deduction and experiments. Calculation results of the model and that of the earlier model are compared with the measured data respectively, and the results show that the former model matches the measured data better. The proposed model can describe train dynamics more accurately, and the average of the calculation errors decreases from 14% to 5%. Now, the new model has been successfully applied into energy-efficient freight train operation guidance system with diesel locomotive.

摘 要为了使列车运行仿真计算结果与实测的列车运行数据更接近，确保仿真系统能够切实有效地分析研究铁路运输生产实际，通过对比研究牵引计算方法计算结果与列车运行监控记录装置实测的数据之间的差异，识别出误差产生的主要原因，并分析了计算误差与坡道类型及列车编组之间的影响关系。通过理论计算与实验测试，提出了基于测试结果对列车坡道阻力计算模型进行修正的方法与模型。对修正计算模型和原始模型的计算结果与实测数据进行对比分析，结果表明，修正后的计算模型与实测数据更加吻合，平均计算误差从14％降低到5％. 目前，该模型已成功应用到内燃牵引货运列车节能优化操纵指导系统，取得了良好的实用效果。