Measurement of vibratory motions of gears supported by compliant shafts

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• 作者：Ma Ru Kang¹ ; ^{kang.306@osu.edu} ; Ahmet Kahraman ; ^{kahraman.1@osu.edu}
• 关键词：Gear dynamics ; Gear vibration measurements ; Digital signal processing
• 刊名：Mechanical Systems and Signal Processing
• 出版年：2012
• 期刊代码：189_08883270
• 类别：et
• 出版时间：May, 2012
• 卷：29
• 期：Complete
• 页码：391-403
• 文件大小：1089 K

摘要

In this paper, an improved accelerometer-based method is proposed for measurement of motions of parallel-axis gears in torsional, translational and rotational directions. This method uses a family of triaxial accelerometers that are mounted on a shaft flange next to the gears at a given radius. Acceleration signals from the accelerometers are processed using a novel formulation to quantify the motions of a gear in the torsional, rotational (rocking), transverse (line-of-action and off-line-of-action) and axial directions. This measurement system is applied to example spur and helical gear pairs held by shafts having different bending compliances. The experimental results indicate that the proposed accelerometer-based measurement methodology is effective in measuring not only the torsional motions but also the other types of translational, rotational and axial motions of a gear as well as the dynamic transmission error. They also point to the influence of the shaft flexibility on gear vibration amplitudes in these directions.