A user-friendly calibration system for bicycle ergometers, home trainers and bicycle power monitoring devices |
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Authors: | Jean-Marc Drouet Yvan Champoux François Bergeron |
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Institution: | (1) University of Sherbrooke, 2500, boulevard de l’Université, Sherbrooke, QC, Canada, J1K 2R1 |
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Abstract: | In this study, a new system for the calibration of bicycle ergometers, home trainers and bicycle power monitoring devices
is described. This system contains a portable calibration rig as well as a specialised calibration software and is designed
for easy and efficient use directly on-site by non-expert personnel. Key features of the calibration rig include a cradle
used to implement a torque reaction measurement technique, roller casters, sliding coupling, and crowned splines to facilitate
and speed up the calibration process. The maximum power uncertainty delivered by the calibration rig for a nominal power level
range of 50–600 W is ±0.9%. A software to guide users through the calibration process and generate calibration charts is described.
To illustrate how the calibration system is typically used, the calibration charts of two different brands of home trainers
have been obtained, and the power output measurement accuracy of two bicycle power monitoring devices has been determined.
Power discrepancies were noted. The results in this study reveal that the calibration system is an effective tool in characterising
the behaviour of home trainers. |
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Keywords: | Bicycle Calibration Ergometers Home trainers |
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