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Title:
SYSTEM IDENTIFICATION DEVICE, SYSTEM IDENTIFICATION METHOD, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/163701
Kind Code:
A1
Abstract:
A system identification device 1 includes an analysis unit 105 that calculates a self-frequency response function on the basis of an input signal and an output signal measured by a measurement unit 103 at a position where a subject physical system 106 has been excited by a vibrating unit 102. The analysis unit 105 performs system identification of the subject physical system 106 by using an impulse response function obtained from the calculated self-frequency response function and an impulse response function of a virtual two-degrees-of-freedom model modeling the subject physical system 106 that is the subject of analysis. This makes it possible to perform system identification of systems with close eigenvalues.

Inventors:
TAKATA SOICHIRO (JP)
INOUE HIROFUMI (JP)
SHINODA SHIGEKI (JP)
KIKUCHI KATSUMI (JP)
Application Number:
JP2019/005805
Publication Date:
August 29, 2019
Filing Date:
February 18, 2019
Export Citation:
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Assignee:
NEC CORP (Postcode1088001, JP)
International Classes:
G05B23/02; G01M7/02
Domestic Patent References:
WO2015059956A12015-04-30
WO2016114136A12016-07-21
WO2015118737A12015-08-13
Foreign References:
JPH0477798A1992-03-11
JPH03217901A1991-09-25
Other References:
KOMATSU, MASATAKA ET AL.: "Vibration characteristics estimation for the structure with closely existing eigenvalues by realization theory", JOURNAL OF STRUCTURAL ENGINEERING, JAPAN SOCIETY OF CIVIL ENGINEERS, vol. 59, pages 340 - 352, ISSN: 1881-820X
NAKAMIZO, TAKAYOSHI ET AL.: "Signal Analysis and System Identification", Tokyo : CORONA PUBUSHING, pages 22 - 24, ISBN: 4-339-03081-3
Attorney, Agent or Firm:
SHIMOSAKA Naoki (Postcode1088001, JP)
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