摘要
结合经验模态分解与小波阈值去噪方法，提出基于EMD小波的高速电梯振动信号去噪方法，并对高速电梯振动信号进行了实例分析。结果表明，应用基于EMD小波阈值去噪方法相比于低通滤波去噪方法与单纯小波阈值去噪方法，具有更高的信噪比，能够提高分析的精度。有效保留了信号特征。
This paper proposes a denoising method of the vibration signal of high speed elevator based on wavelet threshold denoising combining with empirical mode decomposition （EMD）. Then an example analysis is carried on. The results show that comparing to the low-pass filter denoising method and simple wavelet threshold denoising method, wavelet threshold method based on EMD has a higher signal-to-noise ratio, can improve the accuracy of the analysis and effectively preserved the signal characteristics.
出处
《中国电梯》
2014年第1期11-13,16,共4页
China Elevator
关键词
高速电梯
振动信号
去噪
经验模态分解
小波
high speed elevator
vibration signal
denoising
empirical modedecomposition
wavelet
