| 张 烈1, 冯 燕1, 周伦彬2 |
(1. 西北工业大学 电子信息学院,陕西 西安 710072; 2. 广州市计量检测技术研究院,广东 广州 510030) |
摘要:在振动信号测试中,可由加速度信号积分求解速度与位移信号,但由于噪声的存在影响了速度与位移积分精度,因此提出一种基于提高积分精度的自适应确定小波分解层数及阈值的消噪方法。实验结果表明该方法能有效消噪,减少因为噪声引起的积分误差。 |
关键词:小波消噪; 自适应阈值; LabWindows/CVI; 积分; 振动信号 |
中图分类号:TN911 文献标识码:A 文章编号:1000-8829(2008)05-0094-04 |
| Application of Wavelet Denoising Technology Based on LabWindows/CVI in Vibration Signal Testing |
| ZHANG Lie1, FENG Yan1, ZHOU Lun-bin2 |
| (1. School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710072,China; 2. Guangzhou Institute of Measurement and Test Technology,Guangzhou 510030,China) |
Abstract:Velocity signal and displacement signal can be got by integrating acceleration signal in vibration signal test,but noise affects test precision.So a new wavelet adaptive denosing method is put forward to enhancing integral precision.Experiment results show that this adaptive method can effectively reduce integral error by noise. |
Key words:wavelet denoise;adaptive threshold;LabWindows/CVI ;integration;vibration signal |
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