电机与控制应用Issue(2)：73-78,6.
改进的HVD方法在转子故障诊断中的应用∗
Application of Improved HVD Method in Fault Diagnosis of Rotor System
摘要
Abstract
A multi-component non-stationary signal time-frequency method based on improved Hilbert vibration decomposition ( HVD) was presented for the fault diagnosis of rotor system. Firstly, the instantaneous frequency of the largest component signal was separated from the non-stationary frequency of the original vibration signal by using a low-pass filter. Secondly, the corresponding envelope and initial phase was estimated according to the synchronous demodulation. Then, the time-frequency information of each component would be detected through every iteration step. A wave matching extending method based on minimum squared distance criteria was applied in order to overcome the end effects of HVD. The analysis of the simulated signal inflected a good effect of improved HVD in inhibiting the end effects and analyzing multi-component non-stationary signal. The effectiveness of improved HVD was validated by extracting fault features of rubbing rotor、oil whirl and oil whip vibration signals exactly.关键词
希尔伯特振动分解/多分量非平稳信号/时频分析/波形匹配/转子故障诊断Key words
Hilbert Vibration Decomposition ( HVD )/multi-component non-stationary signal/time-frequency analysis/wave matching/fault diagnosis of rotor systems分类
信息技术与安全科学引用本文复制引用
唐贵基,庞彬..改进的HVD方法在转子故障诊断中的应用∗[J].电机与控制应用,2015,(2):73-78,6.基金项目
河北省自然科学基金项目(E2014502052) （E2014502052）
