轨道车辆EMT系统的动态表征和振动响应优化用于轨道车辆的EMT系统
Zhengda Han1, Xiaocong Liang2, Wei Zhang3,4
1School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Scientific reports
|April 12, 2025
概括
这项研究减少了重型车的机电复合变速箱 (EMT) 的振动. 一种新的轮牙形状修剪方法显著改善了振动特性,通过模拟和测试进行验证.
科学领域:
- 机械工程 机械工程
- 车辆动力学 车辆动力学
- 部落学 (tribology) 是一个学科.
背景情况:
- 机电复合变速箱 (EMT) 对重型车至关重要,要求高动力性能.
- 高速和跨国作业放大了EMT系统中的振动问题.
- 了解电磁扭矩和轮网格等激发源对于减轻振动至关重要.
研究的目的:
- 分析协同EMT系统的驱动电机-行星机制中的振动激发源.
- 开发和验证牙形状修剪方法,以减少轮网格激发.
- 为了提高重型车的整体振动特性和动力性能.
主要方法:
- 计算电磁扭矩,不平衡的磁张和轮非线性网格激发.
- 建立和分析驱动电机-行星机制系统的动态模型.
- 建议一种牙形状剪切方法,尽量减少线外网状网格,然后进行动态模拟.
- 使用振动测试装置收集加速数据进行实验验证.
主要成果:
- 激发源对高旋转速度的振动响应的影响定律被揭示出来.
- 提出了一种牙形状修剪方法,并通过动态模拟证明了其有效性.
- 实验结果证实,在轮重塑后,振动明显改善 (高达30%).
- 模拟和实验结果显示良好一致,总体偏差约为15%.
结论:
- 提出的牙形状修剪方法有效地减少了电机组合传动器中的振动.
- 该研究提供了一种经过验证的方法来提高重型车的动态性能.
- 优化的轮形状对于实现卓越的动力性能和降低操作噪声至关重要.
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