Separation of nonlinear mixed rotor fault signals with violent pulse interferences

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	Separation of nonlinear mixed rotor fault signals with violent pulse interferences
	Miao, Feng 1,2; Zhao, Rongzhen 1
刊名	Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
	2014-08-01
卷号	34 期号:4 页码:625-630
关键词	Machinery Median filters Rotors Signal denoising Signal interference Conventional methods De-noised signals Fault signal Machine health monitoring Pulse interferences Rotor vibrations Vibration signal Vibration sources
ISSN号	10046801
英文摘要	When rotary machinery runs, vibration signals measured with sensors are mixed with all vibration sources and thus contain very strong noises. Mixed signals are difficult to separate using conventional methods of signal processing, such as in machine health monitoring and fault diagnosis. The principle and methods of blind source separation are introduced, and the blind source separation algorithm is indicated to be invalid in strong pulse noise environments. In these environments, vibration signals are first de-noised with the median filter method, and the de-noised signal is separated using the blind source separation algorithm. The results of the simulation verify the effectiveness of the proposed method. Finally, some mixed rotor vibration signals are dealed with using the proposed method. A new separation approach is thus provided for use on vibration signals in strong pulse noise environments.
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/113533]
专题	兰州理工大学
作者单位	1.Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China; 2.College of Physics and Electronic Information, Luoyang Normal University, Luoyang; 471022, China
推荐引用方式 GB/T 7714	Miao, Feng,Zhao, Rongzhen. Separation of nonlinear mixed rotor fault signals with violent pulse interferences[J]. Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,2014,34(4):625-630.
APA	Miao, Feng,&Zhao, Rongzhen.(2014).Separation of nonlinear mixed rotor fault signals with violent pulse interferences.Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis,34(4),625-630.
MLA	Miao, Feng,et al."Separation of nonlinear mixed rotor fault signals with violent pulse interferences".Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis 34.4(2014):625-630.