长江科学院院报2012，Vol.29Issue(1)：53-57,5.
小波分析法实现水轮发电机轴心轨迹的提纯
Shaft Orbit Identification for Hydraulic Generator by Wavelet Analysis
伍卫平 1倪国胜 1范钦红 2李东风 1曹树林1
作者信息
- 1. 水利部水工金属结构质量检验测试中心,郑州450044
- 2. 郑州辰维科技股份有限公司,郑州450001
- 折叠
摘要
Abstract
Analysis on the shaft orbit of hydraulic generator is important for diagnosing fault vibration of generator sets. To identify the shaft orbit among noisy signals, an improved soft threshold de-noising method is proposed on the basis of traditional soft-threshold wavelet de-noising and hard-threshold wavelet de-noising. Computer simulation results show that this new method could achieve satisfactory results for de-noising and orbit identification. Apart from the above three methods, harmonic wavelet analysis is also introduced to identify shaft orbits. Comparison and analysis of the results reveal that the harmonic wavelet analysis is more efficient and convenient with the highest signal to noise ratio.关键词
轴心轨迹提纯/小波分解/阈值函数/小波阈值去噪/谐波小波Key words
identification of shaft orbit/ wavelet decomposition/ threshold function/ wavelet threshold de-noising/ harmonic wavelet分类
建筑与水利引用本文复制引用
伍卫平,倪国胜,范钦红,李东风,曹树林..小波分析法实现水轮发电机轴心轨迹的提纯[J].长江科学院院报,2012,29(1):53-57,5.
