一种新的窄带信号去噪方法仿真分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 140-143.

论文

一种新的窄带信号去噪方法仿真分析

李永军;马立元;王天辉;段永刚

作者信息 +

A simulation research on a new combination denoise algorithm for narrow-band signal

Li Yong-jun; Ma Li-yuan; Wang Tian-hui; Duan Yong-gang

Author information +

文章历史 +

摘要

采用基于线性组合器的一种谱线增强算法，对窄带振动信号进行消噪处理。针对传统自适应谱线增强算法的不足，本文提出一种输出反馈的LMS算法，将滤波器输出的历史信息与线性组合器的输出加权后迭加，构成新的滤波器输出，从而构成新的滤波算法。利用MATLAB仿真了该新型组合滤波器消噪效果,仿真分析中将该消噪方案用于仿真信号实际采集的信号。通过仿真验证，新算法的去噪性能优于原来算法。

Abstract

A spectral-line enhancement algorithm based on linear combination is applied to denoise the narrow vibration signal. Aim at the disadvantage of traditional adaptive spectral-line enhancement algorithm, a new LMS algorithm with output feedback is brought out in this paper., which comprise the historic information output by filter and the output by the linear combination to form the new output. So a new algorithm is set up. The effect of the combination filter is researched with Matlab simulation. The simulation and actual signal is applied in the simulation. From the results of simulation, it can be concluded that the new algorithm is better than the original algorithm in time domain waveforms, and the performance of the noise reduction is verify.

导出引用

李永军;马立元;王天辉;段永刚. 一种新的窄带信号去噪方法仿真分析[J]. 振动与冲击, 2012, 31(1): 140-143

Li Yong-jun;Ma Li-yuan;Wang Tian-hui;Duan Yong-gang. A simulation research on a new combination denoise algorithm for narrow-band signal [J]. Journal of Vibration and Shock, 2012, 31(1): 140-143