| 自适应小波去噪算法及其在偏心补偿中的应用 |
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| 引用本文： | 李道平,姚小兰,伍清河,曲亦直.自适应小波去噪算法及其在偏心补偿中的应用[J].北京理工大学学报,2010,30(2):179-183. |
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| 作者姓名： | 李道平 姚小兰 伍清河 曲亦直 |
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| 作者单位： | 北京理工大学,自动化学院,北京,100081;北京理工大学,自动化学院,北京,100081;北京理工大学,自动化学院,北京,100081;北京理工大学,自动化学院,北京,100081 |
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| 摘 要： | 针对液压自动厚度控制(AGC)系统中轧辊偏心信号的补偿问题,提出一种基于自适应小波阈值去噪算法的补偿方法.该方法根据噪声在小波变换下的特性自适应地确定小波分解的阈值,将去噪信号的信噪比作为性能指标,采用黄金分割法进行寻优,得到最优的阈值参数.仿真结果表明,该方法比原有的阈值去噪方法效果更佳,对液压AGC系统中轧辊的偏心信号具有良好的补偿效果.
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| 关 键 词： | 自适应 小波阈值去噪 偏心补偿 黄金分割法 |
| 收稿时间： | 2008/11/27 0:00:00 |
Self-Adaptive Wavelet Threshold De-Noising Method and Its Application in the Compensation of Roll Eccentricity Signal |
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| LI Dao-ping,YAO Xiao-lan,WU Qing-he and QU Yi-zhi.Self-Adaptive Wavelet Threshold De-Noising Method and Its Application in the Compensation of Roll Eccentricity Signal[J].Journal of Beijing Institute of Technology(Natural Science Edition),2010,30(2):179-183. |
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| Authors: | LI Dao-ping YAO Xiao-lan WU Qing-he and QU Yi-zhi |
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| Affiliation: | School of Automation;Beijing Institute of Technology;Beijing 100081;China |
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| Abstract: | To solve the problem of compensation of roll eccentricity signal of hydraulic automatic gauge control(AGC) system,a new method based on adaptive threshold de-noising method is proposed.The new method can self-adaptively decide the threshold of wavelet analysis,and make the SNR as a function of the parameter of the filter to acquire the optimal threshold parameter using golden section method.Simulation shows that the result of de-noising with this new method is much better than the original method and have a... |
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| Keywords: | self-adaptation threshold de-noising on wavelet transform the compensation of roll eccentricity signal gold section method |
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