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基于蚁群算法的小波降噪双阈值优选方法

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Indexed by:期刊论文

Date of Publication:2011-01-15

Journal:控制与决策

Included Journals:PKU、ISTIC、CSCD、EI、Scopus

Volume:26

Issue:1

Page Number:115-119

ISSN No.:1001-0920

Key Words:小波变换;降噪闽值;相关性分析;蚁群算法;压缩机振动故障检测

Abstract:将相关性分析方法和阀值降噪方法相结合,提出了一种基于蚁群算法的小波降噪双阙值优选方法.首先根据噪声的分布特点确定合理的寻优区间;然后根据信号和噪声的小波系数自相关系数的不同特点确定优化日标函数;最后利用蚁群算法在寻优区间内搜索最优上下阈值.仿真和压缩机振动故障检测的实际应用表明,该方法能够选掸最优降噪阈值,有效去除噪声.

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