Title:
CONDITION MONITORING SYSTEM AND WIND POWER GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/159784
Kind Code:
A1
Abstract:
This condition monitoring system is provided with a vibration sensor (70) for measuring a vibration waveform of a bearing in a wind power generation device, and a data processing device (80) for diagnosing abnormalities in the bearing. Within the data processing device (80), an evaluation value calculation unit (140) temporally continuously calculates an evaluation value characterizing an effective value of vibration waveform data outputted from the vibration sensor (70) over a certain period. A diagnosis unit (150) diagnoses an abnormality in the bearing on the basis of the shift in the evaluation value changes over time. The evaluation value calculation unit (140) calculates the lowest value of the effective value of the vibration waveform data over a certain period as the evaluation value.
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Inventors:
HASEBA TAKASHI (JP)
SUZUKI YOSUKE (JP)
TAKAHASHI TORU (JP)
SUZUKI YOSUKE (JP)
TAKAHASHI TORU (JP)
Application Number:
PCT/JP2017/010659
Publication Date:
September 21, 2017
Filing Date:
March 16, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01M99/00
Foreign References:
| JP2011154020A | 2011-08-11 | |||
| JP2010181151A | 2010-08-19 | |||
| JP2003050157A | 2003-02-21 | |||
| JP2002022617A | 2002-01-23 | |||
| JPH08110262A | 1996-04-30 | |||
| US6370957B1 | 2002-04-16 | |||
| JP2017026421A | 2017-02-02 |
Other References:
See also references of EP 3431952A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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