| 硅粉流化床中颗粒浓度信号非线性分析 |
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| 引用本文： | 王友承,杨虎,邓棹栩,谢小利.硅粉流化床中颗粒浓度信号非线性分析[J].四川化工,2011,14(1):34-37. |
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| 作者姓名： | 王友承 杨虎 邓棹栩 谢小利 |
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| 作者单位： | 四川理工学院材料与化学工程学院,四川自贡,643000 |
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| 摘 要： | 以硅粉为原料,空气为介质,采用PV4A型颗粒测试仪测定了φ150mm×1000mm的有机玻璃管流化床中不同轴/径向位置处颗粒浓度波动信号.利用小波分析对颗粒浓度信号进行多尺度能量分析,并确定最佳小波函数和分解尺度,考察了不同尺度下信号能量分率随操作条件的变化.
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| 关 键 词： | 气固流化床 波动信号 小波变换 多尺度 能量分析 |
Nonlinear Analysis of Particle Concentration Fluctuation Signal in Silicon Powder Fluidized Bed |
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| Wang Youcheng,Yang Hu,Deng Zhuoxu,Xie Xiaoli.Nonlinear Analysis of Particle Concentration Fluctuation Signal in Silicon Powder Fluidized Bed[J].sichuan chemical industry,2011,14(1):34-37. |
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| Authors: | Wang Youcheng Yang Hu Deng Zhuoxu Xie Xiaoli |
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| Affiliation: | Wang Youcheng,Yang Hu,Deng Zhuoxu,Xie Xiaoli(College of Materials and Chemical Engineering,Sichuan University of Science and Engineering,Zigong 643000,China) |
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| Abstract: | In this paper,silicon powder as raw material and air as media,particle concentration fluctuations signal are measured by PV4A particles velocity analyzer at different operation conditions in gas-solid fluidized bed with 150mm diameter in the experiment.The particle concentration signals were processed multi-scale energy analysis by wavelet analysis,its best-scale wavelet function and decomposition were determined and the changes of energy percentage with the operation cnditions at different scales were stud... |
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| Keywords: | gas-solid fluidized bed fluctuation signal wavelet transform multi-scale energy analysis |
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