TSXCFY11一阶谐波发生在50%驱动模式和50%滑行模式,分别为0.34 μm 和 0.32 μm。与峰-峰TE类似,结果优于EV减速器要求的目标值,所有其他工况也满足单谐波振幅的目标值。
通过对输出级齿轮修形的传动误差分析可以看到:
(1) 在正驱和滑行工况下峰-峰TE值都较小。峰TE发生在50%驱动模式和50%滑行模式,分别为1.09 μm 和 1.12 μm,结果优于EV减速器要求的目标值。所有其他工况的峰-峰TE值也都优于目标值。
(2) 峰-峰TE可以分解到成分谐波(图9显示的前三阶谐波)中。在所有的工况下,TE的主要贡献是一阶谐波并随着谐波数目的增加而呈指数衰减。
TSXCFY11
一阶谐波发生在50%驱动模式和50%滑行模式下,分别为0.50 μm 和 0.52 μm。与峰-峰TE类似,结果优于EV减速器要求的目标值,所有其他工况也满足单谐波振幅的目标值。
6 试验验证
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针对电驱桥NVH性能评价的方法通常是对齿轮的阶次噪声基于整车测试的数据进行分解,阶次分解本质上是基于参考轴转速的频率分析[3]。整车技术规范一般要求电驱桥减速器齿轮啮合阶次噪声低于整车Overall噪声10 dB(A)以上,在试验过程中振动传感器及传声器布置位置。
TSXCFY11