列车牵引制动冲击率分析测试方法研究
郑策王文军马昭钰张士宇
Research on Analysis and Testing Methods for Train Traction-braking Impact Rate
ZHENG CeWANG WenjunMA ZhaoyuZHANG Shiyu
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作者信息:中车长春轨道客车股份有限公司， 130062， 长春
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Affiliation:CRRC Changchun Railway Vehicles Co., Ltd., 130062, Changchun, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20253031
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中图分类号/CLCN:U270.1
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栏目/Col:车辆制造与列车控制
摘要:
［目的］为确保列车在牵引制动过程中应能够平缓地加速及减速，须在列车交付前进行冲击型式试验。为解决冲击型式试验牵引和制动过程中冲击率测试方法选择的难题，提出一种基于加速度法与速度法的对比分析框架，以优化测试方法的选择并提高测试结果的可靠性。［方法］通过对列车进行冲击型式试验，重点考察了在多种不同工况下牵引和制动过程中产生的冲击率。针对目前常见的试验测试方法——加速度法及速度法，以某型列车为例，进行了详细的比较分析。使用统计方法分析了两种方法在不同工况下的结果上的差异和倾向性，并在排除设备误差对结果的影响后，通过卡方检验确认了两种算法在统计上存在显著区别。［结果及结论］通过比对分析，发现两种测试方法的合格率存在显著差异，速度法试验结果合格率显著高于同等情况下的加速度法试验结果合格率。这一结果表明，加速度法在测试列车冲击率时具有更高的可靠性和适用性，应在条件允许情况下，尽量选择加速度法来测试列车在牵引和制动过程下的冲击率。
Abstracts:
［Objective］ To ensure trains smoothly accelerate and decelerate during traction/braking processes, animpact-type tests must be conducted before train delivery. To address the challenge of selecting impact rate testing methods during traction/braking in impact-type tests, a comparative analysis framework based on accelerometer-based method and speed method is proposed, to optimize the test method selection and enhance the result reliability. ［Method］ Through impact-type tests on trains, impact rates generated during traction/braking process under multiple operating conditions are investigated emphatically. A detailed comparative analysis is conducted using a specific train model, examining the accelerometer-based and speed two common testing methods. Statistical methods are employed to analyze differences and tendencies in results between both methods across various operating conditions. After eliminating the influence of equipment errors, a chi-square test confirmed statistically significant differences between the two algorithms are identified. ［Result & Conclusion］ Comparative analysis revealed significant differences in pass rates between the two methods: the speed method shows markedly higher pass rates than the accelerometer-based method under identical conditions. This indicates that the accelerometer-based method offers superior reliability and applicability for testing train impact rates. Where conditions permit, the accelerometer-based method should be prioritized for impact rate testing during traction/braking process.
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