NDLI: An improved EMD time-frequency analysis method for rocket vibration signal

Content Provider	IEEE Xplore Digital Library
Author	Zhang Jianhai Han Yingchun Li Lianzhou Liu Jun Che Bin
Copyright Year	2014
Description	Author affiliation: State Key Lab. of Astronaut. Dynamics, Xi'an, China (Zhang Jianhai; Han Yingchun; Li Lianzhou; Liu Jun; Che Bin)
Abstract	According to noise and low frequency redundant problems generated by analyzing non-stationary signal with empirical mode decomposition (EMD) method, this paper proposes an improved EMD method which uses instantaneous frequency weighed average algorithm to eliminate noise component and correlate coefficient significant test to eliminate low redundant components. The improved EMD method which can obtain effective intrinsic mode function (IMF) from investigated signal was applied in simulation signal and rocket vibration signal to analyze time-frequency characteristics. The result indicates that this method can eliminate noise and low frequency redundant component effectively.
Starting Page	1842
Ending Page	1846
File Size	147406
Page Count	5
File Format	PDF
ISBN	9781479947003
e-ISBN	9781479946990
DOI	10.1109/CGNCC.2014.7007461
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Time-frequency analysis Rockets Analytical models Frequency modulation Noise Transforms
Content Type	Text
Resource Type	Article

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An improved EMD time-frequency analysis method for rocket vibration signal