摘要
论述了小波分析在动态测试信号降噪中的应用。主要分析如何引入小波变换理论并通过它去除动态测试信号中的白噪声。随后阐述小波分析去除噪声的工程实现方法及其相对FFT除噪方法的优势。对一例加入白噪声的力脉冲信号进行了计算机仿真实验 ,结果表明 ,用小波变换处理含噪信号 。
The application of wavelet analysis in reducing the noise in dynamic testing signals is given in detail, which mainly includes reducing the white noise involved in the dynamic testing signal via wavelet analysis theory. After that, the practical way of applying this analysis to engineering and its advantage vs. FFT are demonstrated. A sample signal added white noise is analyzed by PC simulation experiment. It proves to have considerable effect of noise-reducing.
出处
《南京工程学院学报（自然科学版）》
2003年第2期22-26,共5页
Journal of Nanjing Institute of Technology(Natural Science Edition)
基金
全国教育科学"十五"规划国家教育部重点项目资助 (DYB0 10 82 8 18)
关键词
小波分析
动态诊断
噪声
wavelet analysis
dynamic testing
noise
