摘要
从理论上讨论了齿轮集中缺陷和分布缺陷的频域特征，特别是边带分布特点。集中故障的边带数目多，强度起伏小；而对于分布故障，若调制波为单频，则理论上只在啮合频率ｆ ｍ 和它的 ２ 倍频２ｆｍ 两侧各形成 １ 个边带；若调制波含有２ 次谐波，则在啮合频率ｆｍ 和它的２ 倍频２ｆｍ 两侧各形成２ 个边带。还结合测试实例。
The features of gears in time and frequency domain caused by local and distributed faults are theoretically discussed in this paper.Local faults cause more sidebands,but less fluctuation intensity.But for distributed faults,if modulating wave has single frequency,there is only one sideband in both sides of meshing frequency f m and its doubling frequency 2f m respectively.If modulating wave has secondary harmonic,there are two sidebands in both sides of meshing frequency f m and its doubling freqency 2f m.Combining with the experiences acquired on spot,some remarkable problems found in ascertaining faults of gears using vibration signals are also presented.
出处
《振动工程学报》
EI
CSCD
1999年第3期429-433,共5页
Journal of Vibration Engineering
关键词
故障诊断
齿轮振动
缺陷
边带分布特征
fault diagnosis
gears
local fault
distributed fault
sideband distributed feature
