A6 アイスホッケー用センサ・スティックの開発 : 各手作用力測定用スティックの製作およびキャリブレーション(動作解析2・他)

抄録

In ice hockey shooting motion, it is impossible to determine the forces and moments acting on the hockey stick with the only visual information about motion of the stick, because the upper extremities and the stick form a closed multiple-segment loop. In this paper, an instrumented hockey stick equipped with twelve-pair of strain gauges was proposed to reduce the difficulties. A calibration method for the stick was proposed additionally. The strain sensors provided force or moment information, such as 1) torsional moment acting about longitudinal axis of the shaft, 2) bending moments at each sensor position, and 3) tensile and compressive axial forces. Unique solution of forces and moments exerted by each hand was achieved through force and moment equilibrium conditions using the strain information. From the calibration results, the longitudinal axial force have small influence on the coefficients of strain gauge sensors for bending moments.