Dynamic simulation research of road bicycles based on the mathematical model

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 consistency 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 follows,. Firstly, speed should be maintained at around 13m/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 effected when there are the uphill section with smaller inclined angle and downhill section with larger inclined angle; Lastly, spring 180m can reach speed peak, while the best distance to the sprint stage is180∼220m. These parameters will be used for the control system of exercise bicycle. © 2014, Journal of Chemical and Pharmaceutical Research. All rights reserved.