基于应变的多平面动平衡检测方法

Strain-based Multi-plane Dynamic Balance Detecting Method

针对动平衡试验过程中配重面与不平衡面不一致而导致的转轴弯曲变形问题,提出了一种基于应变的多平面动平衡检测方法。采用转轴受力分析模型,在旋转坐标系下通过转轴各截面应变平均值计算出不平衡力。在转子试验台上对单轮盘和多轮盘上的不平衡量进行检测,并与不平衡量的实际结果进行比较。结果表明:不平衡量的检测结果与实际结果之间的误差较小,表明本方法可以准确检测出多轮盘上的不平衡量。

Aiming at the problem of bending deformation of the rotating shaft caused by inconsistency between counterweight surface and unbalanced surface during the dynamic balance test,a strain-based multi-plane dynamic balance detecting method was proposed.Unbalanced force was calculated according to average strain of each section of the rotating shaft under rotating coordinate system by using force analysis model of rotating shaft.Finally,unbalanced force of single disk and multi-disk was accurately detected on the rotor test bench,which was compared with actual unbalanced values.Results show that the error between detected value and actual value of the unbalance is small,indicating that the method can accurately detect the unbalance of the multi-disk.