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摘要该文展示了一种可以测定径向受力滚动轴承稳态摩擦力矩的方法和测试设备,并用以测量某乘用车发动机前端附件传动系统中典型滚动轴承在不同径向力和转速下的摩擦力矩。基于最小二乘法应用多种函数对摩擦力矩与转速之间的关系进行拟合,依据相关系数和显著性水平选定了最优拟合函数,进而得到了摩擦力矩与转速、径向力之间的经验公式。与试验数据的对比显示,所拟合公式比Palmgren公式具有更高的精度。该测试方法可直接用于其他工程领域中的滚动轴承摩擦力矩的测试。拟合方法与拟合公式对滚动轴承摩擦力矩的表征具有参考意义。
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| 关键词 ：滚动轴承,径向力,摩擦力矩,数据拟合,发动机前端附件皮带传动 |
Abstract：A device is developed to measure the friction torque of rolling bearings subjected to radial loads while running at steady speeds. The friction torques are measured at various speeds and radial loads for typical rolling bearings used in an engine front end accessory belt drive of a passenger vehicle. The least squares method is used to fit the friction torque and the rotational speed with the optimal function chosen according to the correlation coefficient and significance level. A set of empirical formulae are then derived for the friction torque in terms of both the rotational speed and the radial load. The expressions are more accurate than the Palmgren formula. The test method can be applied to measure the friction torque of rolling bearings used in other fields as a valuable method to characterize the torque characteristics.
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| Key words：rolling bearingradial loadingfriction torquedata fittingengine front end accessory belt drive |
| 收稿日期: 2013-09-30 出版日期: 2015-03-17 |
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