Abstract
To investigate the re-adhesion and dynamic characteristics of the locomotive drive system with wheel slip controller, a co-simulation model of the train system was established by SIMPACK and MATLAB/SIMULINK. The uniform running and starting conditions were considered, and the influence of structural stiffness of the drive system and the wheel slip controller on the re-adhesion and acceleration performance of the locomotive was investigated. The simulation results demonstrated that the stick-slip vibration is more likely to occur in locomotives with smaller structural stiffnesses during adhesion reduction and recovery processes. There are many frequency components in the vibration acceleration spectrum of the drive system, because the longitudinal and rotational vibrations of the wheelset are coupled by the wheel–rail tangential force when stick-slip vibration occurs. In general, increasing the structural stiffness of the drive system and reducing the input energy in time are effective measures to suppress stick-slip vibration. It should also be noted that inappropriate matching of the wheel slip controller and drive system parameters may lead to electro-mechanical coupling vibration of the drive system, resulting in traction force fluctuation and poor acceleration performance.
概要
目的
大功率重载机车采用轮对空心轴架悬驱动系统降 低轮轨动作用力,但采用六连杆空心轴联轴 器导致驱动系统的扭转刚度相对较小,对轮 对驱动系统黏滑振动不利。本文旨在研究黏 着条件改变时,黏着控制对驱动系统动态特 性以及机车再黏着性能的影响,从黏着控制 与驱动系统参数合理匹配的角度提出提高 机车黏着利用的措施。
创新点
1. 通过建立机车牵引与黏着控制联合仿真模型, 研究黏着控制对机车再黏着性能以及驱动系统 黏滑振动影响;2. 研究黏着控制器参数与机车驱 动系统参数匹配不合理时导致的机电耦合振动。
方法
采用联合仿真方法,建立 SIMPACK-MATLAB/SIMULINK联合仿真 模型。在SIMPACK中建立包含完整驱动系 统、齿轮传动系统、钩缓装置和轮轨蠕滑负 斜率特性的机车牵引列车模型,在 MATLAB/SIMULINK中建立黏着控制模型, 通过动力学仿真研究黏着控制对驱动系统 动态特性以及机车再黏着性能的影响。
结论
1. 驱动系统发生黏滑振动时,轮对纵向振动与扭 转振动通过切向力耦合;2. 减小平均滑动率 (再黏着控制)和动态滑动率(增加驱动系统 刚度)是抑制驱动系统黏滑振动的有效措施; 3. 机车驱动系统与黏着控制需合理匹配,否 则会导致驱动系统机电耦合振动。
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (No. U2268211), the Sichuan Provincial Natural Science Foundation (Nos. 2022NSFSC0034 and 2022NSFSC1901), the Independent Research and Development Projects of the State Key Laboratory of Traction Power (No. 2022TPL_T02), and the Opening Foundation of The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration.
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Guosong WU and Yuan YAO designed the research. Guosong WU and Longjiang SHEN processed the corresponding data. Guosong WU wrote the first draft of the manuscript. Yuan YAO and Longjiang SHEN helped to organize the manuscript. Guosong WU, Yuan YAO, Wensheng SONG, and Jingchun HUANG revised and edited the final version.
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Guosong WU, Longjiang SHEN, Yuan YAO, Wensheng SONG, and Jingchun HUANG declare that they have no conflict of interest.
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Determination of the dynamic characteristics of locomotive drive systems under re-adhesion conditions using wheel slip controller
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Wu, G., Shen, L., Yao, Y. et al. Determination of the dynamic characteristics of locomotive drive systems under re-adhesion conditions using wheel slip controller. J. Zhejiang Univ. Sci. A 24, 722–734 (2023). https://doi.org/10.1631/jzus.A2300158
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DOI: https://doi.org/10.1631/jzus.A2300158