SYMMETRICAL WAVELET CONSTRUCTION AND ITS APPLICATION FOR ELECTRICAL MACHINE FAULT SIGNAL RECONSTRUCTION

摘要：

Symmetrical wavelet and anti-symmetrical wavelet have characteristics of linear phase and generalized linear phase respectively. They are very important to signal decomposition and reconstruction, because they can avoid signal distortion.Daubechies wavelets and Symlets wavelets have being used widely. Unfortunately, they arent symmetrical. In this paper,firstly, general symmetrical wavelet construction method based on Db4 and Sym4 have been presented. The computational complexity of constructed symmetrical wavelets is just half as primitive wavelets. Secondly, Db4 based symmetrical wavelet packets are used to decompose and reconstruct fault signals of electric machines. The experiment illustrates that symmetrical wavelets have less frequency leakage and more energy concentration than primitive mother wavelets do.

关键词： Daubechies Symlets Symmetrical wavelet Wavelet packet Signal decomposition and reconstruction

作者: GUO-SHENG HU ZHEN REN YONG-JUN TOU

作者单位: Guangdong Vocational Institute of Science and Tech, Guangzhou, 510640, China;School of Electric Powe School of Electric Power, South China University of Tech., Guangzhou, 510640, China Guangdong Vocational Institute of Science and Tech, Guangzhou, 510640, China

会议类型: 国际会议

会议名称: 2006 International Conference on Machine Learning and Cybernetics(IEEE第五届机器学习与控制论坛)

会议地点: 大连

会议语种:英文

页码: 3734-3737

在线出版日期: 2006-08-13（万方平台首次上网日期，不代表论文的发表时间）