センサ素子とばねに分離した可搬型フォースプレートの開発

抄録

Ground reaction forces (GRF) are one of the important issues to investigate the kinetic characteristics of motion. In general, force plates, which are composed of a plate and force sensors, have been used for measurement of GRF. The measurement method will be useful for various types of walking situation and other animals. However, to specialize the force range for such targets, it is necessary to redesign from the force sensor in each case. Here, this paper presents a two-axis force plate with planar coils as the sensor elements and mechanical springs. By supporting the plate with springs and measuring the displacement of the plate with non-contact sensors, the mechanical performance does not depend on the sensing elements. Therefore, the proposed device realizes it easy to change the force range by replacing the springs. The fabricated device was evaluated in terms of sensitivity and position error.