摘要
小波变换能很精确地将振动的真实信号从受各种噪声严重污染的采集信号中提取出来,具有很高的信号去噪能力,它通过对仿真信号进行小波分解,抽取其低频系数进行频谱分析,提高了频率分辨率,在水力机组的振动监测中具有重要的应用价值.
The advantage of wavelet transformation and its application in the vibration monitoring for hydropower unit are presented.The wavelet analysis in de-noising the vibration signal polluted by noise is made,which is proved to have good effect. Therefore,these methods provide more accurate features for next work.
出处
《华北水利水电学院学报》
2005年第2期31-33,共3页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
小波变换
水力机组
振动监测
去噪
wavelet transformation
hydropower unit
vibration monitoring
signal de-noise
