现代电子技术2017，Vol.40Issue(21)：98-101,4.DOI:10.16652/j.issn.1004-373x.2017.21.027
基于小波变换的CO2预裂腔内压力时频特征分析
Time-frequency characteristics analysis of pressure signal in CO2 pre-splitting intracavity based on wavelet transformTime-frequency characteristics analysis of pressure signal in CO2 pre-splitting intracavity based on wavelet transform
闫睿 1裴东兴 2崔春生1
作者信息
- 1. 中北大学 电子测试技术国家重点实验室,山西 太原 030051
- 2. 中北大学 仪器科学与动态测试教育部重点实验室,山西 太原 030051
- 折叠
摘要
Abstract
In order to optimize the pre-splitting technonogy by means of the dynamic parameter extraction of CO2 pre-split-ting process,on the basis of the experimental data of a certain CO2 pre-splitting,the wavelet transform is used to perform the time-frequency characteristics analysis for the dynamic pressure signal in intracavity of CO2 pre-splitting device,which can ob-tain the time history curve and energy distribution of the pressure signal components at different frequency bands. The analysis results show that the wavelet decomposition and reconstruction of the intracavity pressure signal in pre-splitting process can re-flect the influence of the pressure signal′s intensity,frequency and waveform on energy distribution. The time history curves of different frequency bands are combined to get the detail information of the dynamic pressure distribution and attenuation at different frequency bands,so as to determine the influence of frequency band components on pre-splitting effect.关键词
CO2预裂/时频特征/小波变换/能量分布Key words
CO2 pre-splitting/time-frequency characteristic/wavelet transform/energy distribution分类
信息技术与安全科学引用本文复制引用
闫睿,裴东兴,崔春生..基于小波变换的CO2预裂腔内压力时频特征分析[J].现代电子技术,2017,40(21):98-101,4.
