NDLI: Research on working modal identification of electronic equipment by cross spectrum

Content Provider	IEEE Xplore Digital Library
Author	Ying Chen Lei Gao Bingdong Liu Rui Kang Liqun Chen
Copyright Year	2014
Description	Author affiliation: AVIC Aviation Power Control Syst. Res. Inst., Wuxi, China (Liqun Chen) \|\| Sch. of Reliability & Syst. Eng., Beihang Univ., Beijing, China (Ying Chen; Lei Gao; Bingdong Liu; Rui Kang)
Abstract	Traditional technology of experimental modal analysis bases on the known input and output signals, and utilizes integrated information of both the excitation and responses to identify the modal parameter. In most of the actual conditions, only the response data is measurable while excitations are unknown. Thus modal parameter must be extracted only from responses. In allusion to this limitation, this paper puts forward to analyzing working mode of the electronic equipment by use of cross spectrum generated only by output responses. In order to get the response data, an integrated working modal test system has been built here. It is made up of available hardware and related software and is excited by the vibration table. This paper will use the test system and the cross-spectrum method to identify working modal parameters of a certain aviation equipment, which will then be applied to modify the finite element model (FEM). Results indicate that this test system is capable to acquire data in need, and that cross-spectrum method can identify parameters of the working mode, and also, the simulation results are in accordance with those from test. The whole system saves us much time and cost. It not only provides probability to simultaneously verify the working mode and vibration response, but also lays technical foundation for better appliance of the reliability simulation analysis method based on physics of failure (PoF) in practical projects.
Starting Page	440
Ending Page	444
File Size	691589
Page Count	5
File Format	PDF
e-ISBN	9781479936694
DOI	10.1109/CYBER.2014.6917504
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Shape Modal analysis Educational institutions Software Finite element analysis Reliability
Content Type	Text
Resource Type	Article

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