场地自行车在直弯道之间的速度波动研究

Study on the Velocity Fluctuation of Track Cycling

用5台德国产自行车数据收集分析系统(SRM自行车仪),收集、处理在南京、深圳、昆明等场地自行车训练和比赛的生物力学数据,按照不同场地,不同骑行速度计算人车系统在进出直弯道时平均速度和最大速度的变化。结果表明:速度波动与场地半径有显著性关系。当自行车从直道进入弯道时速度增加,而自行车从弯道进入直道时速度减小。250m场地上的速度波动比333.3m场地更大。速度波动与运动员骑行速度没有显著性关系。

5 German-made SRM cycling instruments were applied to collect and process the biome- chanical data in track cycling training and competition in Nanjing, Shenzhen and Kunming. According to different velodromes and different cycling speed, the average velocities and maximum velocities from the straight to the curve and vice versa were calculated. The result shows that velocity fluctuation has a close relationship with the radius of velodrome. Velocity increases when the bicycle goes from the straight to the curve and decreases vice versa. The velocity fluctuation in 250m track is greater than that in 333.3m. No significant relation is found between the velocity fluctuation and the velocity of bicycle.