Title:
METHOD OF MEASURING VISCOSITY AND VISCOSITY MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/086879
Kind Code:
A1
Abstract:
A method of measuring viscosity and a viscosity measuring device wherein positive feedback of the vibration velocity of a vibrating body (1) located in the fluid to be measured allows for feedback control of an actuator (6), the vibration state of the vibrating body (1) is monitored while increasing a velocity feedback gain Cc, the velocity feedback gain Cc is obtained when the vibrating body (1) vibrates, within the vibration limit, as the vibration limit gain Cc*, and this vibration limit gain Cc* is defined as the equivalent viscosity value representing the viscosity level of the fluid to be measured.
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Inventors:
KURODA, Masaharu (2-1 Namiki 1-chome, Tsukuba-sh, Ibaraki 64, 〒3058564, JP)
黒田 雅治 (〒64 茨城県つくば市並木１－２－１ 独立行政法人産業技術総合研究所内 Ibaraki, 〒3058564, JP)
黒田 雅治 (〒64 茨城県つくば市並木１－２－１ 独立行政法人産業技術総合研究所内 Ibaraki, 〒3058564, JP)
Application Number:
JP2011/000039
Publication Date:
July 21, 2011
Filing Date:
January 07, 2011
Export Citation:
Assignee:
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (3-1 Kasumigaseki 1-chome, Chiyoda-ku Tokyo, 21, 〒1008921, JP)
独立行政法人産業技術総合研究所 (〒21 東京都千代田区霞が関一丁目３番１号 Tokyo, 〒1008921, JP)
KEIO UNIVERSITY (15-45, Mita 2-chome Minato-k, Tokyo 45, 〒1088345, JP)
学校法人慶應義塾 (〒45 東京都港区三田二丁目１５番４５号 Tokyo, 〒1088345, JP)
独立行政法人産業技術総合研究所 (〒21 東京都千代田区霞が関一丁目３番１号 Tokyo, 〒1008921, JP)
KEIO UNIVERSITY (15-45, Mita 2-chome Minato-k, Tokyo 45, 〒1088345, JP)
学校法人慶應義塾 (〒45 東京都港区三田二丁目１５番４５号 Tokyo, 〒1088345, JP)
International Classes:
G01N11/16
Attorney, Agent or Firm:
MORI, Tetsuya et al. (Tokkyo Gyomu Hojin Nichiei Kokusai Tokkyo Jimusho, Yusen Iwamotocho Bldg. 8th Floor 3-3, Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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Claims:
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