AUTOMATIC METHOD FOR CONTROLLING IN CURRENT-MODE A MOTOR FOR ASSISTING WITH PEDALLING ON AN ELECTRICALLY ASSISTED PEDAL CYCLE AND ELECTRICALLY ASSISTED PEDAL CYCLE INTENDED TO IMPLEMENT SUCH A METHOD
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United States of America Patent
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Issued Date -
Sep 15, 2022
app pub date -
Jul 8, 2020
filing date -
Aug 7, 2019
priority date (Note) -
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Abstract
An automatic method for controlling in current-mode a motor for assisting with pedaling on an electrically assisted pedal cycle equipped with a sensor that measures a resultant force on its pedal and gear mechanism is provided, including injecting a control current into the motor to generate an assistance torque and computing the value of the assistance torque; computing a value of the longitudinal resultant of the assistance torque by applying a second coefficient of proportionality to the torque value computed in the preceding step; measuring a value of the longitudinal resultant of the total torque; computing a value of the longitudinal resultant of the torque exerted by the cyclist; computing an average value of the torque exerted by the cyclist over a fraction of a crank rotation; computing the value of the assistance torque to be generated in the motor; and deducing the value of the current to be injected.
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