摘要
针对阈值函数存在降噪效果不理想的问题,提出一种新的小波阈值去噪函数。利用Matlab进行模拟仿真实验,并用几种阈值算法对含噪的局部放电信号进行去噪,采用SNR和均方根误差(MSE)这两个指标来衡量降噪效果,对比实验结果发现,新的阈值函数处理后的结果优于传统方法。
In view of the problem that the above tow threshold functions have poor noise reduction effect,this paper proposes a new wavelet threshold denoising function.Matlab is used to run the simulation experiment,and several threshold algorithms are used to denoise the noisy partial discharge signal.The noise reduction effect is measured using two indicators:SNR and root mean square error(MSE).When the experimental results are compared,it is discovered that the new threshold function outperforms the traditional method.
作者
侯云海
任钰
HOU Yunhai;REN Yu(School of Electrical&Electronic Engineering,Changchun University of Technology,Changchun 130012,China)
出处
《长春工业大学学报》
2023年第4期345-352,共8页
Journal of Changchun University of Technology
基金
吉林省科技发展计划项目(20210101087JC)。
关键词
小波阈值去噪
阈值
阈值函数
信噪比
均方根误差
wavelet threshold denoising
threshold
threshold function
signal-to-noise ratio
root mean square error
