Collision dynamic analysis of the break down in the rugby football

本研究的目的是分析橄榄球的一次接触动作，并建立碰撞动力学模型。为此，将微型惯性传感器安装在真实球员身上，测量了实际技术（铲球和侧步）的运动特性。对传感器信号进行(1)位置角转换、(2)电气降噪和(3)跨度误差（漂移误差）校正。对真正的橄榄球运动员进行了同样的测量。在这项研究中，它成功地测量了橄榄球运动员在实际技能中几秒钟的运动特性。将碰撞力和运动轨迹的测量结果与实测值（真值）进行比较，得出一个测量值的概率约为50%。

The purpose of this study is analyzing a contact play of the rugby football and is the construction of the collision dynamics model. Therefore a micro inertial sensor was put on a real player, and the motion properties of practical skills (tackles and side steps) were measured. (1)position angle conversion, (2)electrical noise reduction and (3)span error (drift error) correction were applied to sensor signal. And the measurement for the real rugby player was repeated. In this study, it succeeded to measure motion of rugby player properties in the practical skill for several seconds. A crash force and the motion trace of the measurement result were compared with the real value (truth value), and a measurement was possible with probability of the approximately 50%.