METHOD AND SYSTEM FOR ZERO-RESETTING OF A TORQUE-MEASURING DEVICE, ESPECIALLY ON A CYCLE OF LIKE VEHICLE

摘要

A method for zero-resetting of a device for measuring transmitted torque while a cycle is in motion consists in monitoring a phenomenon or a parameter which is normally variable during normal use of the cycle and which disappears or becomes constant when the driving wheel rotates in free-wheel motion. When the disappearance or the constant character of the phenomenon or parameter thus monitored is observed during a predetermined period of time, one initiates zero-resetting of the detector system or of the measuring system proper of the torque-measuring device. The device for carrying out the method comprises on the one hand means for monitoring the phenomenon or parameter and on the other hand control means which are operated in dependence on the signal emitted by the monitoring means and which are then capable of producing action on the detection system or the measuring system in order to reset either of these two systems to zero.