Title:
ABNORMALITY DIAGNOSIS DEVICE FOR ROLLING BEARING, WIND POWER GENERATOR, AND ABNORMALITY DIAGNOSIS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/081085
Kind Code:
A1
Abstract:
An effective-value calculation unit (120) calculates the effective value of an oscillating waveform of a bearing, the oscillating waveform being measured by using an oscillation sensor (70). An envelope processor (140) generates an envelope waveform of the oscillating waveform by performing envelope processing on the oscillating waveform measured by using the oscillation sensor (70). An effective-value calculation unit (160) calculates the effective value of the AC component of the envelope waveform generated by the envelope processor (140). A diagnosis unit (190) diagnoses a bearing abnormality, in accordance with the effective value of the oscillating waveform, said effective value being calculated by the effective-value calculation unit (120), and in accordance with the effective value of the AC component of the envelope waveform, said effective value being calculated by the effective-value calculation unit (160).
Inventors:
SAKAGUCHI,Tomoya (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
坂口 智也 (〒67 三重県桑名市陽だまりの丘５丁目１０５番 ＮＴＮ株式会社内 Mie, 〒5110867, JP)
NINOYU, Nobuyuki (Rm2201 Shanghai Maxdo Center, 8 Xingyi Road, Changning Distric, Shanghai ., CN)
二之湯 伸幸 (上海市長寧区興義路８号上海万都中心２２０１室 恩梯恩（中国）投資有限公司内 Shanghai, CN)
坂口 智也 (〒67 三重県桑名市陽だまりの丘５丁目１０５番 ＮＴＮ株式会社内 Mie, 〒5110867, JP)
NINOYU, Nobuyuki (Rm2201 Shanghai Maxdo Center, 8 Xingyi Road, Changning Distric, Shanghai ., CN)
二之湯 伸幸 (上海市長寧区興義路８号上海万都中心２２０１室 恩梯恩（中国）投資有限公司内 Shanghai, CN)
Application Number:
JP2010/073300
Publication Date:
July 07, 2011
Filing Date:
December 24, 2010
Export Citation:
Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
SAKAGUCHI,Tomoya (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
坂口 智也 (〒67 三重県桑名市陽だまりの丘５丁目１０５番 ＮＴＮ株式会社内 Mie, 〒5110867, JP)
NINOYU, Nobuyuki (Rm2201 Shanghai Maxdo Center, 8 Xingyi Road, Changning Distric, Shanghai ., CN)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
SAKAGUCHI,Tomoya (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
坂口 智也 (〒67 三重県桑名市陽だまりの丘５丁目１０５番 ＮＴＮ株式会社内 Mie, 〒5110867, JP)
NINOYU, Nobuyuki (Rm2201 Shanghai Maxdo Center, 8 Xingyi Road, Changning Distric, Shanghai ., CN)
International Classes:
G01M13/04; G01H17/00
Attorney, Agent or Firm:
Fukami Patent Office, p.c. (Nakanoshima Central Tower, 2-7 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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