Title:
METHOD AND APPARATUS FOR MEASURING DYNAMIC LOAD, AND LOAD MEASURING EQUIPMENT USING THEM
Document Type and Number:
WIPO Patent Application WO/1993/005371
Kind Code:
A1
Abstract:
A method and apparatus for measuring a load under a dynamic state where variations such as swinging and vibration exist. One of the ends of a member constituting a spring system is fixed with the other end free. A stationary load We is calculated in accordance with equation (I) by attaching a load to the free end and measuring the instantaneous displacement Yi. In the equation (I), Wi is the instantaneous load, g is gravitational acceleration, DELTAg(A/L)i is the acceleration of the free end obtained by differentiating twice the displacement Yi, and k is a spring constant. When a base to which the member constituting the spring system is fixed undergoes variations such as swinging and vibration the stationary load We is determined by (II) where DELTAg(G/L)i is the acceleration of variation of the base.
Inventors:
TADA EIICHI (JP)
WATANABE KAZUO (JP)
WATANABE KAZUO (JP)
Application Number:
PCT/JP1992/001094
Publication Date:
March 18, 1993
Filing Date:
August 27, 1992
Export Citation:
Assignee:
KYOEI AUTOMATIC CONTROL TECHNO (JP)
TADA EIICHI (JP)
TADA EIICHI (JP)
International Classes:
G01G3/00; G01G3/12; G01G9/00; G01G21/24; G01G23/01; G01G23/06; G01G23/37; (IPC1-7): G01G9/00; G01G23/01; G01G23/37
Foreign References:
| JPH01299420A | 1989-12-04 | |||
| JPS58162030U | 1983-10-28 | |||
| JPS6310368B2 | 1988-03-07 | |||
| JPS6183918A | 1986-04-28 | |||
| JPS5954932A | 1984-03-29 |
Other References:
See also references of EP 0557528A4
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