Quantitative evaluation method of arc sound spectrum based on sample entropy
文献类型：期刊论文
| 作者 | Yao P; Zhou K(周亢); Zhu Q |
| 刊名 | MECHANICAL SYSTEMS AND SIGNAL PROCESSING
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 92页码:379-390 |
| 关键词 | Arc sound signal Sample entropy PSD ASSE |
| ISSN号 | 0888-3270 |
| 中文摘要 | 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. |
| 类目[WOS] | Engineering, Mechanical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | TIME-SERIES ANALYSIS ; APPROXIMATE ENTROPY ; WELDING PROCESS ; COMPLEXITY ; QUANTIFY |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000395613100022 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60575]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yao P,Zhou K,Zhu Q. Quantitative evaluation method of arc sound spectrum based on sample entropy[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2017,92:379-390. |
| APA | Yao P,周亢,&Zhu Q.(2017).Quantitative evaluation method of arc sound spectrum based on sample entropy.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,92,379-390. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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