公路自行车的动力学分析及仿真研究  被引量:9

Analysis on the Dynamics and Simulation of Road Cycling

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作  者:蔡睿[1] 陈亮[2] 何申杰[1] 江崇民[1] 李然[1] 刘智 

机构地区:[1]国家体育总局体育科学研究所,北京100061 [2]台州学院体育科学学院,浙江临海317000 [3]湖北省体育科学研究所湖北武汉430205、

出  处:《中国体育科技》2014年第1期125-128,共4页China Sport Science and Technology

基  金:“十一五”国家科技支撑计划资助项目(2009BAK62B06)

摘  要:自行车骑行是一个受重力、地面支撑力、空气阻力、地面摩擦力等多种力综合作用的过程,而在户外骑行公路自行车因风速和骑行路面的变化受力过程更为复杂。健身车如何在骑行过程中做到现实场景的真实感,不仅需要在视觉上进行表现,更重要的是实现健身车骑行的负荷与实地骑行感觉的一致性。在力学分析的基础上,建立公路自行车骑行过程的动力学数学模型,通过模型求解,分析不同骑行状态下的特征与规律。仿真结果显示,在相对平缓路面上骑行时,速度应保持在12m/s左右;在通过连续起伏路段时,若距离较短可加快骑行速度,若距离较长应降低骑行速度;在以额定功率上坡和下坡骑行时,倾斜度较小的上坡路段和倾斜角度较大的下坡路段对速度影响不大;全力冲刺200m可达到速度的峰值,而200~250m是完成冲刺阶段的最佳距离。该组参数将运用于健身车样车的控制系统。Cycling is an integrated effect process of several physical forces including gravity, support force, air resistance and ground friction. For the changes of air speed and riding road, the stress processes of outdoors road cycling are more complex. In the process of riding, how to provide realistic scenes like the real scene, not only in the visual, but also to achieve the con- sistency of exercise bicycle riding load and actual riding feeling is more important. Based on the analysis of the stress, the research constructed the mathematical model of cycling process of road bicycle and studied the features and laws under different riding conditions by solving the model. The findings are as follows: firstly, speed should be maintained at around 12m/s in the relatively flat road riding;secondly, in the continuous rolling road, we can accelerate the riding speed if the distance is short, we should reduce the speed if it is longer~ thirdly, in rated power uphill and downhill riding, speed has little effect when there are the uphill section with smaller inclined angle and downhill section with larger inclined angle; lastly, spring 200m can reach speed peak, while the the best distance to the sprint stage is 200~250m. These parameters will be used for the control system of exercise bicycle.

关 键 词:健身车 公路自行车 动力学 模型 仿真 

分 类 号:G804.6[文化科学—运动人体科学]

 

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