Title:
SIGNAL ANALYSIS DEVICE, EXCITING FORCE MEASUREMENT SYSTEM, SIGNAL ANALYSIS METHOD, AND PROGRAM RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2015/098104
Kind Code:
A1
Abstract:
In order to highly accurately derive exciting force in a high-frequency range produced in a structure, this signal analysis device is provided with: a forcibly excited vibration analysis means for deriving an acceleration frequency response characteristic on the basis of a forcibly excited vibration component of time history data of acceleration vibration response from an observed target that has been excited; a damped free vibration analysis means for deriving a frequency response function of the observed target, from a vibration amplification factor calculated on the basis of the damping ratio of a damped free vibration component of the time history data of acceleration vibration response; and an exciting force frequency characteristic deriving means for deriving the frequency characteristics of exciting force, by dividing the acceleration frequency response characteristics by the frequency response function of the observed target.
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Inventors:
KASAI SHIGERU (JP)
TAKATA SOICHIRO (JP)
TAKATA SOICHIRO (JP)
Application Number:
PCT/JP2014/006431
Publication Date:
July 02, 2015
Filing Date:
December 24, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01H17/00; G01M7/02
Foreign References:
| JPH08233648A | 1996-09-13 | |||
| JPH08226866A | 1996-09-03 |
Other References:
TAKAYUKI KOIZUMI ET AL.: "Estimation of Excitation Force Generated with a Machine in Operating Condition Based on Frequency Response Functions", DYNAMICS & DESIGN CONFERENCE, 16 September 2003 (2003-09-16), pages 308.1 - 308.6
HISAMI OISHI ET AL.: "Estimation of the Transfer Function to the Point that cannot be Excited", MONTHLY JOURNAL OF INSTITUTE OF INDUSTRIAL SCIENCE, UNIVERSITY OF TOKYO, vol. 39, no. 2, 1 February 1987 (1987-02-01), pages 58 - 61
HISAMI OISHI ET AL.: "Estimation of the Transfer Function to the Point that cannot be Excited", MONTHLY JOURNAL OF INSTITUTE OF INDUSTRIAL SCIENCE, UNIVERSITY OF TOKYO, vol. 39, no. 2, 1 February 1987 (1987-02-01), pages 58 - 61
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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