| 摘要 |
<p>The calibration of a backlash impulse device in a sport implement (20) is effected by firstly measuring the natural frequency of the striking surface (26) of the implement; determining from the measured natural frequency, a time of occurrence *T* and a duration of a period of elastic recovery *R' of the striking surface (26) in a first vibration cycle *P* following an impact on the striking surface (26). The method also comprises the step of adjusting a distance of travel 'D' of the movable mass (32) inside the backlash impulse device during a strike of a ball with the sport implement (20), such that an impulse (62) is generated on the striking surface (26) by this movable mass (32) during the strike, at the same time as the occurrence of the period of elastic recovery 'R' of the striking surface, in the first vibration cycle 'P' following the strike.</p> |
