複数のカメラとプリズムを用いたサンプリングモアレ法型六軸フォースプレート

抄録

This paper reports on a force plate capable of independently measuring force and moment using the sampling moiré method. The proposed device consists of a mechanical force plate structure and a displacement measurement system. A striped pattern is attached to four edges of the plate, and two striped pattern images are obtained by capturing them through a prism with cameras, resulting in total eight stripe pattern images. By analyzing these eight images using the sampling moiré method, in-plane and out-of-plane displacements are derived. The applied force and moment are then calculated by multiplying the displacements by the spring constants. In this study, we designed and fabricated a 6-axis force plate and evaluated its characteristics. The displacements of the eight patterns’ images exhibited distinct linear responses to the applied forces and moments. The force and moment resolutions were less than 1.6 mN and 0.88 μNm, respectively. The experimental results confirmed the fundamental feasibility of the proposed force plate.