Generation method of asymmetric chainring design from pedaling torque experimental data
Journal of Mechanical Science and Technology(2022)
摘要
In cycling, pedaling is a bilateral asymmetries function that related to leg dominance. However, studies about the asymmetric shape on the chainring design considering pedaling asymmetries function and the test are limited. In this paper, a method to generate an asymmetric chainring from the experimental data is proposed. The curve fitting method and the flowchart to synthesize the asymmetric shape from the crank torque data are presented. The experimental test to compare the chainring prototype and the circular chainring on the same number of teeth is conducted. The comparison test is performed by comparing the downstroke torque and power at the same rotational speed on the rear wheel. The result indicates that pedaling on the asymmetric chainring prototype is more efficient and lighter than circular chainring. This work can be used as a guidance procedure to design any asymmetric chainring from the experimental data.
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关键词
Asymmetric design, Noncircular chainring, Pitch chainring generation, Torque synthesize
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