Analysis of vibration signals of scroll compressor based on information entropy

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	Analysis of vibration signals of scroll compressor based on information entropy
	Wu, Zaixin 1; Liu, Tao 1,2; Huang, Chengdong 1
刊名	Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
	2014-02-01
卷号	34 期号:1 页码:168-172
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
ISSN号	10046801
英文摘要	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.
语种	中文
出版者	Nanjing University of Aeronautics an Astronautics
内容类型	期刊论文
源URL	[http://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
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.