PURPOSE: To improve the linearity between the load and the output voltage by a method wherein the line of action of the load applied to a beam to which a strain gauge is stuck is provided aslant so that it acts on the line perpendicular to the longitudinal direction of the beam from the basic side part.
CONSTITUTION: A load transmitting rod 25 is provided aslant at the angle of α to a line (v) perpendicular to a beam 12. When the load W acts upon a movable piece part 2, the beam 12 is transformed and the load W1 in the vertical direction turns to be Wcosα, while in the horizontal direction a component force W2=Wsinα is generated. Since strain gauges 18, 19 and 21 are not influenced so much by the moment, they are little influenced by the component force W2, while a strain gauge 20 being much influenced by the moment. However, when the tilt angle α is made to be 6°, the best linearity between the load W and the output voltage is attained. By tilting the load transmitting rod 25 in this way, the linearity between the load and the output voltage is improved.
KITAGAWA TOORU
WATANABE KAZUO
| JPS5856418A | 1983-04-04 |