1814 内蔵型加速度センサによる飛翔球の運動学変量推定(S18 スポーツ流体工学,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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The purpose of this research is to estimate the velocity, angular velocity and direction of the rotational axis of the flying ball by the accelerometer. A subject performed pitching by using the sensor ball. And, the closed up release point image was acquired using the high speed cameras. The distance from the release point to the switch is measured image analysis and the velocity of each trial was estimated by the flight time of the ball. The angular velocity was estimated from the gravitational and the translational acceleration. The direction of the rotational axis was estimated from the component of the centrifugal acceleration. Each estimated value was compared to the value calculated by the high speed cameras. The velocity difference between the estimation value and the calculation value was about 1.85 (m/s). The difference of the angular velocity was about 0.57 (rad). The difference of the rotational axis was about 0.41 (rad). And it was observed that the rotational axis on the sensor coordinate system changed during flight phase.
社団法人日本機械学会の論文
2008-08-02