一种基于匹配追踪的信号周期冲击分量提取方法

Guozhen Wang, Wei-hua Niu, Jianping Zhao
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引用次数: 0

摘要

针对实际振动信号中存在随机冲击干扰时周期冲击分量提取困难的问题,提出了一种基于改进匹配追踪的信号周期冲击分量提取方法。该方法构建了周期冲击原子库,并采用了基于统计改进的分割内积方法。该方法可以有效地提取随机冲击下旋转机械的周期性冲击分量,消除随机冲击的影响。仿真结果表明,该方法能有效提取随机冲击干扰下信号中的周期性冲击分量,证明了该方法的有效性和工程实用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Signal Periodic Impact Component Extraction Method Based on Matching Pursuit
Aiming at the problem that the periodic impact component extraction is difficult under the random impact interference in the actual vibration signal, a method of extracting the periodic impact component of the signal based on improved matching pursuit is proposed. The method proposed in this paper constructs the periodic impact atomic library, and the segmentation inner product method based on statistical improvement is used. The proposed method can effectively extract the periodic impact component of rotating machinery under random impact, and eliminate the impact of random impact. The simulation results show that the proposed method can effectively extract the periodic impact components in the signal under random impact interference, which proves the effectiveness and engineering practicability of the method.
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