| Quantitative evaluation method of arc sound spectrum based on sample entropy |
| Yao P; Zhou K(周亢); Zhu Q; Zhou, K (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100864, Peoples R China.
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| 发表期刊 | MECHANICAL SYSTEMS AND SIGNAL PROCESSING
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| 2017-04-01
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| 卷号 | 92页码:379-390 |
| ISSN | 0888-3270
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| 摘要 | Arc sound analysis is an effective way to evaluate the stability of the arc welding process. Current methods cannot effectively quantify the disorder of the process. By studying the characteristics of the arc sound signal we found that low frequency random mutation of arc sound power resulted from unstable factors such as splashes or short circuits increased the complexity and randomness of the arc sound signals. Then the arc sound signals were visualized on time -frequency interface by means of spectrogram and it was found that the max power spectral density (PSD) distribution of spectrogram was closely related to the stability of arc welding process. Moreover a method based on sample entropy was proposed to further quantify the relation. Finally considering the factors such as averages of max PSD and the standard deviations of sample entropy a compound quantitative evaluation indicator arc sound sample entropy (ASSE) which can avoid the influence of different parameters on the quantitative results was proposed so that the stability of arc welding process can be quantitatively presented. Testing results showed that the accuracy rate of the method was more than 90 percent. (C)2017 Elsevier Ltd. All rights reserved. |
| 关键词 | Arc Sound Signal
Sample Entropy
Psd
Asse
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| DOI | 10.1016/j.ymssp.2017.01.016
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000395613100022
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| 关键词[WOS] | TIME-SERIES ANALYSIS
; APPROXIMATE ENTROPY
; WELDING PROCESS
; COMPLEXITY
; QUANTIFY
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| WOS研究方向 | Engineering
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| WOS类目 | Engineering, Mechanical
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| 课题组名称 | LHD微尺度和非平衡流动
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| 论文分区 | 一类
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| 力学所作者排名 | 1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/60575
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| 专题 | 高温气体动力学国家重点实验室
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| 通讯作者 | Zhou, K (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100864, Peoples R China. |
推荐引用方式
GB/T 7714 |
Yao P,Zhou K,Zhu Q,et al. Quantitative evaluation method of arc sound spectrum based on sample entropy[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2017,92:379-390.
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| APA |
Yao P,周亢,Zhu Q,&Zhou, K .(2017).Quantitative evaluation method of arc sound spectrum based on sample entropy.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,92,379-390.
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| MLA |
Yao P,et al."Quantitative evaluation method of arc sound spectrum based on sample entropy".MECHANICAL SYSTEMS AND SIGNAL PROCESSING 92(2017):379-390.
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