The fault feature information can not be obtained availably by regular methods to extract the features of nonstationaryvibration signals produced by fault rolling bearings.
滚动轴承的振动信号是非平稳信号，用常规方法难以从振动信号中提取有效故障特征信息。
2
Although the engine's rotational speed changes notable and the vibration signal is seriously nonstationary, the character component's parameter is picked up precisely.
当发动机转速变化较大，振动信号非平稳严重时，高精度地提取出了特征分量的参数。
3
Nonstationary random vibration of vehicle systems with uniform variable speed is discussed in this paper.