摘要
提出基于小波尺度图重分配的信号瞬态特征检测方法和瞬时能量估计方法,并应用于轴承在多种轻微故障状况下的振动非平稳特征的检测与表示。结果表明,重分配的小波尺度图能够以较高的时频分辨率表示轴承振动中的非平稳特征,反映轴承的多种故障,瞬时能量估计可以作为分析轴承状态的依据。
The singal transient feature detection represent method, and a transient energy evaluation method are used based on the reassigned scalogram for the vibration non-stationary feature representation. The proposed methods are also utilized in the representation of the cone bearing vibration signal feature. Results show that the reassigned scalogram has the signal feature in the time-scale plane with the high resolution, the transient energy evaluation has the transient feature in a more distinct aspect, and thus using for the mechanical fault diagnosis.
出处
《数据采集与处理》
CSCD
北大核心
2005年第3期356-360,共5页
Journal of Data Acquisition and Processing
关键词
瞬态特征检测
小波尺度图
重分配
故障诊断
transient feature detection
wavelet scalogram
reassignment
fault diagnosis
