文档介绍：中国测试
China Measurement & Test
ISSN 1674-5124,CN 51-1714/TB
VMD 参数
选取。首先通过仿真信号对比实验，验证了该文算法具有更好的降噪效果和降噪性能指标。而后，将该方法应用于微型电机
实测声音信号，测试结果表明提出的基于峭度原则 VMD-SVD 算法具有良好降噪效果，能够显著提高原始信号信噪比，更利
于后续特征提取和故障检测工作。
关键词：微型电机；声音信号降噪；变分模态分解（VMD）；奇异值分解（SVD）
中图分类号：TP206+.1 文献标志码：A
A VMD-SVD micro-motor sound signal noise reduction method
based on the kurtosis principle
LI Weiguang, LAN Qinhong, MA Xianwu
(School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641,
China)
Abstract：The sound signal of micro motor is rich in state information, which can be used for the rapid detection of motor on the
production line. However, due to the small volume and low sound energy of the motor to be tested, the sound signal is easy to be
coupled with the environmental noise in the process of acquisition, which leads to the inaccurate extraction and detection of sound
signal. This paper studies the structure of motor, analyzes the frequency components and causes of s