Analysis of vibration signals of scroll compressor based on information entropy | |
Wu, Zaixin1![]() ![]() | |
2014-02-01 | |
发表期刊 | Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
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ISSN | 10046801 |
卷号 | 34期号:1页码:168-172 |
摘要 | In order to make a quantitative description for the running status of the scroll compressor, a fault diagnosis method of information entropy is proposed on the basis of the theory of entropy. This method is based on singular spectrum entropy in time domain, power spectrum entropy in frequency domain, wavelet power spectrum entropy and wavelet space feature spectrum entropy in time-frequency domain, which is used as the comprehensive appraisal index of quantitative feature for vibration status of scroll compressor. Under condition of invariable speed operation, the identification of natural frequency is carried out. Meanwhile, the influence of the axial vibration of moving scroll, radial compliance mechanism and slight liquid slugging on the scroll compressor is analyzed quantitatively. Three forms of periodic cataclysm of moving scroll under variable speed operation and the variation of information entropy with rotational speed are disclosed. Results provide basic data for the fault diagnosis of scroll compressor. |
关键词 | Failure analysis Fault detection Frequency domain analysis Power spectrum Signal analysis Time domain analysis Vibration analysis Fault diagnosis method Information entropy Power spectrum entropy Quantitative description Singular spectrum entropy Variable speed operations Variation of informations Vibration signal |
收录类别 | EI |
语种 | 中文 |
出版者 | Nanjing University of Aeronautics an Astronautics |
EI入藏号 | 20141517567321 |
EI主题词 | Scroll compressors |
EI分类号 | 618.1 Compressors - 716.1 Information Theory and Signal Processing - 921 Mathematics - 921.3 Mathematical Transformations |
来源库 | Compendex |
分类代码 | 618.1 Compressors - 716.1 Information Theory and Signal Processing - 921 Mathematics - 921.3 Mathematical Transformations |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/113037 |
专题 | 机电工程学院 |
作者单位 | 1.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; 2.Key Laboratory of Digital Manufacturing Technology and Application, Ministry of Education, Lanzhou University of Technology, Lanzhou, 730050, China |
第一作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Wu, Zaixin,Liu, Tao,Huang, Chengdong. Analysis of vibration signals of scroll compressor based on information entropy[J]. Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,2014,34(1):168-172. |
APA | Wu, Zaixin,Liu, Tao,&Huang, Chengdong.(2014).Analysis of vibration signals of scroll compressor based on information entropy.Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,34(1),168-172. |
MLA | Wu, Zaixin,et al."Analysis of vibration signals of scroll compressor based on information entropy".Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis 34.1(2014):168-172. |
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