An electric motor-assisted bicycle includes a vehicle speed sensor to detect a vehicle speed, a torque sensor to detect a pedal force on a pedal connected to a crankshaft, a motor to generate an assist force that assists the pedal force, a motor controller to control the assist force by the motor depending on the pedal force and the vehicle speed, a threshold determiner to determine an unauthorized alteration determination threshold depending on the vehicle speed, and an unauthorized alteration detector to determine whether an unauthorized alteration has been made to the vehicle speed sensor or the torque sensor by comparing a running output and the unauthorized alteration determination threshold, wherein the running output is the sum of the assist force by the motor and the pedal force. If an unauthorized alteration has been made, a predetermined control is performed to address the unauthorized alteration.


    Access

    Download


    Export, share and cite



    Title :

    ELECTRIC MOTOR-ASSISTED BICYCLE AND MOTOR CONTROL APPARATUS


    Contributors:

    Publication date :

    2022-03-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



    ELECTRIC MOTOR-ASSISTED BICYCLE AND MOTOR CONTROL APPARATUS

    KIMPARA YUKI | European Patent Office | 2022

    Free access

    Electric motor-assisted bicycle and motor control apparatus

    EDA KAORU / HATTORI YOICHIRO | European Patent Office | 2023

    Free access

    DISPLAY APPARATUS FOR ELECTRIC MOTOR-ASSISTED BICYCLE, AND ELECTRIC MOTOR-ASSISTED BICYCLE

    UDA MASATSUGU / MOROZUMI NORIHIRO / KITAYAMA RYOHEI | European Patent Office | 2022

    Free access

    Electric-motor-assisted bicycle

    MANO YASUNORI | European Patent Office | 2019

    Free access

    ELECTRIC-MOTOR-ASSISTED BICYCLE

    MANO YASUNORI | European Patent Office | 2017

    Free access