Study on Feature Eztraction of High Speed Precision Electric Machine Vibration Signal

摘要：

Vibration signals usually contain running condition and fault information of rolling mechanical equipment. In the paper, firstly, a vibration test scheme of high speed precision electric machine is designed; time domain average method is used to filter the periodic noise and random noise of the sampling vibration signals. The result shows that the signal to noise ratio is increased. Then the denosing vibration signal is decomposed by means of wavelet packet and the reconstructed signal energy of every frequency segment is calculated. The study identifies that the reconstructed signal of every frequency segment contains corresponding frequency, and the energy can be used as the vibration signals eigenvector to estimate the running state of the electric machine.

关键词： Vibration signal De-nosing Wavelet packet decomposition Energy

作者: LIU Qingjie LIU Xiaofang CHEN Guiming

作者单位: Staff Room 504 of The Second Artillery Engineering College Xian Shanxi,China

会议类型: 国际会议

会议名称: 2010 International Conference on Image Analysis and Signal Processing(2010 图像分析与信号处理国际会议 IASP 10)

会议地点: 厦门

会议语种:英文

页码: 466-469

在线出版日期: 2010-04-12（万方平台首次上网日期，不代表论文的发表时间）