| 应用小波分析研究外循环反应器的浓度波 |
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| 引用本文： | 刘海峰,施军民,王辅臣,龚欣,于遵宏. 应用小波分析研究外循环反应器的浓度波[J]. 化工学报, 2002, 53(6): 621-626 |
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| 作者姓名： | 刘海峰 施军民 王辅臣 龚欣 于遵宏 |
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| 作者单位： | 华东理工大学资源与环境工程学院 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(No G19990 2 2 10 3)，高等学校骨干教师资助计划项目~~ |
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| 摘 要： | 应用小波分析研究了外循环反应器浓度波这类非平稳拟周期信号的特征 .首先利用能量最大准则确定浓度波的特征尺度 .其次利用浓度波的特征尺度 ,重构了浓度波的波形 .最后利用小波分析计算了浓度波波峰处的局部奇异性指数
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| 关 键 词： | 小波变换 外循环反应器 停留时间分布 浓度波 非平稳周期函数 |
| 文章编号： | 0438-1157(2002)06-0621-06 |
| 修稿时间： | 2000-09-13 |
CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS |
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| LIU Haifeng,SHI Junmin,WANG Fuchen,GONG Xin,YU Zunhong. CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS[J]. Journal of Chemical Industry and Engineering(China), 2002, 53(6): 621-626 |
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| Authors: | LIU Haifeng SHI Junmin WANG Fuchen GONG Xin YU Zunhong |
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| Abstract: | The characteristic of the concentration wave in the RTD of out-circular reactor,which is a nonstationary quasi-periodic signal,has been investigated with wavelet analysis.At first,the characteristic scale of concentration wave was determined with an energy maxima criterion based on wavelet analysis.And we found that the characteristic scale of concentration wave is about directly proportional to the average once through time of the reactor.Then,a reconstruction formula based on wavelet analysis is strictly proved to be capable of reconstructing the concentration wave shape.At last,the local singularity exponents of concentration wave crests are calculated with wavelet analysis.The results show that the local singularity exponents of crest increase with time,and runs to about 2 0,which agree very well with theoretical result. |
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| Keywords: | wavelet transform out|circular reactor resident time distribution concentration wave nonstationary periodic function |
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