Wang E L, Hull M L
University of Nevada, Reno Department of Mechanical Engineering 89557, USA.
J Biomech Eng. 1997 Aug;119(3):248-53. doi: 10.1115/1.2796088.
To optimize the performance of off-road bicycle suspension systems, a dynamic model of the bicycle/rider system would be useful. This paper takes a major step toward this goal by developing a dynamic system model of the cyclist. To develop the cyclist model, a series of four vibrational tests utilizing random inputs was conducted on seven experienced off-road cyclists. This allowed the transfer functions for the arms and legs to be determined. To reproduce the essential features (i.e., resonance peaks) of the experimental transfer functions, the system model included elements representing the visceral mass along with the arms and legs. Through simulations, the frequency responses of the system model of the rider in each of the four tests were computed. Optimal stiffness and damping parameter values for each subject were determined by minimizing the difference between the experimental and simulation results. Good agreement between experimental and simulation results indicates that modeling the rider as a lumped parameter system with linear springs and dampers is possible.
为了优化越野自行车悬架系统的性能，建立自行车/骑手系统的动力学模型会很有帮助。本文朝着这一目标迈出了重要一步，即开发骑手的动力学系统模型。为了建立骑手模型，对七名经验丰富的越野自行车骑手进行了一系列利用随机输入的四项振动测试。这使得能够确定手臂和腿部的传递函数。为了再现实验传递函数的基本特征（即共振峰），系统模型包括了代表内脏质量以及手臂和腿部的元件。通过模拟，计算了四项测试中每项测试里骑手系统模型的频率响应。通过最小化实验结果与模拟结果之间的差异，确定了每个受试者的最佳刚度和阻尼参数值。实验结果与模拟结果之间的良好一致性表明，将骑手建模为具有线性弹簧和阻尼器的集总参数系统是可行的。
