选择自行车车轮的模型(英文)

Model for choosing a bicycle wheel

分析了自行车爬山的运动状态并得到了运动方程 .考虑到实用性 ,比较了其瞬时功率而不是平均功率 ,并得到了选择圆盘轮时的风速下限 .在 task 2中通过必要的修正 ,得到了选择辐条轮瞬时的风速上限 .一方面 ,当风速比风速下限来得大时 ,选择圆盘轮的瞬时功率比选择辐条轮的瞬时功率小 ;另一方面 ,当风速比风速上限来得小时 ,选择圆盘轮的瞬时功率比选择辐条轮的瞬时功率大 .当实际风速界于风速下限和风速上限之间时 ,最终找到了一个选择圆盘轮和辐条轮的更为精确的简单方法 .用计算机模拟了实际的情况 ,证明了该模型的可靠性 .

We analyzed the motion state of the bicycle climbing a hill and got the motion equation.Considering the practicability,instantaneous power instead of their average power was compared and the botton limit of wind speeds for selecting a solid wheel was gotton.Through some necessary complementarity in task 2,the top limit of wind speeds for selecting a spoked wheel was gotten too.On one hand,when the wind speed is larger than the bottom limit of wind speed,the instantaneous power while using a solid wheel is smaller than that while using a spoked wheel. On the other hand,when the wind speed is smaller than the top limit of wind speed,the instantaneous power while using a solid wheel is larger than that while using a spoked wheel. When the wind is between bottom limit and top limit speed,we finally give another simple method in order to male our selection between spoked wheel and solid wheel more accurate.