| 掘进机截割载荷极值能量的频率识别 |
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| 引用本文： | 李晓豁,韩宇飞. 掘进机截割载荷极值能量的频率识别[J]. 煤炭学报, 2008, 33(4): 459-461 |
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| 作者姓名： | 李晓豁 韩宇飞 |
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| 作者单位： | 辽宁工程技术大学,机械工程学院,辽宁,阜新,123000;辽宁工程技术大学,机械工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家自然科学基金 , 国家安全生产监督管理局、国家煤矿安全监察局安全生产科技发展指导性计划 , 辽宁省重点实验室基金 |
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| 摘 要： | 基于小波包分解提取信号的多尺度空间能量特征的基本原理，采用小波包分析技术对掘进机截割三向载荷信号进行分解，并选择能量比重较大的低频信号进行重构，运用Matlab进行仿真计算，得出掘进机截割载荷信号重构后的功率谱图,由此检测出掘进机截割载荷极值能量的频率分别为3.40, 375, 3.00 Hz，载荷能量集中在2.5～5.0 Hz之间.
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| 关 键 词： | 掘进机 截割载荷极值能量 频率识别 功率谱 小波包 |
| 文章编号： | 0253-9993(2008)04-0459-03 |
| 修稿时间： | 2007-07-31 |
Frequency recognition of cutting loads extreme energy for roadheader |
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| LI Xiao-huo,HAN Yu-fei. Frequency recognition of cutting loads extreme energy for roadheader[J]. Journal of China Coal Society, 2008, 33(4): 459-461 |
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| Authors: | LI Xiao-huo HAN Yu-fei |
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| Abstract: | Based on the fundamental principle of multi scale spatial energy feature of signal extraction by using wavelet packet decomposition, wavelet packet analysis methods were adopted to divide the signal of cutting there direction loads of roadheader, and the dominating components from wavelet packet decomposition was reconstructed, and the power spectrums of reconstructed signals were obtained by the implementation of Matlab in simulation computation. The results show that the frequency of cutting power extreme energy is 3.40, 3.75, 300 Hz, and the loads energy focuses on 2.5～5.0 Hz. |
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| Keywords: | roadheader cutting power extreme energy frequency recognition power spectrum wavelet packet |
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