摘要
为了得到更加真实有用的压路机信号,针对振动压路机钢轮的振动加速度信号采集中所存在的噪声,在4种不同阀值原则下对振动加速度信号进行小波降噪处理,采用IIR低通滤波器对同一信号进行滤波去噪。结果表明,小波降噪方法在对压路机钢轮振动信号的处理中能够更好地降噪并保留有用信号。
In order to get more genuine and useful signal from roller, the wavelet noise reduction of vibration acceleration signal was conducted under four threshold values aimed at the noise collected from the vibration of drums of vibration roller, and the IIR low pass filter was applied for the filtering and noise reduction. The result indicates that by adopting the wavelet noise reduction approach, the noise can be effectively removed and useful signal would be retained.
出处
《筑路机械与施工机械化》
2013年第12期58-61,共4页
Road Machinery & Construction Mechanization
基金
江西省交通厅项目(2012C0019)
关键词
压实信号
噪声
小波降噪
阈值
compaction signal
noise
wavelet noise reduction
threshold value
