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Application of New Wavelet Threshold in Signal Noise Elimination of the Frequency Control System
Author(s): 
Pages: 62-66
Year: Issue:  3
Journal: Electric Switcher

Keyword:  变频调速阈值函数小波变换健康诊断;
Abstract: 研究变频调速方式下工况变化和供电电源的谐波成分对调速系统的振动信号、运行噪声、电流、电压等信号变化规律的影响,在Donoho D L和Johnstone I M提出的多分辨分析小波阈值去噪方法的基础上,讨论了sqtwolog、rigrsure、heursure、minimaxi四种常见的阈值与新的阈值函数--能量元阈值确定方法在变频系统的信号去噪过程中的效果.通过MATLAB试验仿真,结果表明新的...
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