WINDOW FUNCTIONS FOR THE CALCULATION OF THE TIME-DOMAIN AVERAGES OF THE VIBRATION OF THE INDIVIDUAL PLANET GEARS AND SUN GEAR IN AN EPICYCLIC GEARBOX
WINDOW FUNCTIONS FOR THE CALCULATION OF THE TIME-DOMAIN AVERAGES OF THE VIBRATION OF THE INDIVIDUAL PLANET GEARS AND SUN GEAR IN AN EPICYCLIC GEARBOX
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DOI：
10.1115/1.2930410
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发表时间：
1994-04-01
影响因子：
1.7
通讯作者：
MCFADDEN, PD
中科院分区：
文献类型：
--
作者：
MCFADDEN, PD
一种现有的技术，能够根据测量的振动信号估计行星和行星齿轮箱中单个行星和太阳齿轮的啮合振动的时域平均值，该技术已被修订。现有技术的一个关键特征是当其中一个行星齿轮靠近振动传感器时，在时间域中的矩形窗口内对振动信号进行采样。修正后的技术允许使用其他窗函数，详细的分析表明，可以用窗函数来表示时域平均估计中的误差。通过数值例子和对直升机变速箱上故意损坏其中一个行星齿轮的试验数据的分析，证明了几个适当的窗口函数能够减少误差水平。
An existing technique which enables the estimation of the time domain averages of the tooth meshing vibration of the individual planet and sun gears in an epicyclic gearbox from measured vibration signals has been revised. A key feature of the existing technique is the sampling of the vibration signal within a rectangular window in the time domain when one of the planet gears is close to the vibration transducer. The revised technique permits the use of other window functions, and a detailed analysis shows that the errors in the estimate of the time domain average can be expressed in terms of the window function. Several suitable window functions which enable a reduction in the level of the errors are demonstrated by numerical examples and by the analysis of data from a test on a helicopter gearbox with deliberate damage to one of the planet gears.