A torque detecting device and an electric power steering system, of which the size of the body is reduced, are provided. A torque sensor (7) includes a first rotor (31) that is fixed to an input shaft (21) and that has a predetermined shaft angle multiplier, and a second rotor (32) that is fixed to an output shaft (22) and that has a shaft angle multiplier different from that of the first rotor (31). In first to fourth output coils arranged on a stator (30) that is arranged around outer peripheries of the first and second rotors (31, 32), electric signals having different phases are generated on the basis of a variation of a gap between the stator (30) and the first and second rotors (31, 32) due to rotation of the first and second rotors (31, 32). A twist angle of a torsion bar (23), which is coupled between the input shaft (21) and the output shaft (22), is calculated on the basis of the electric signals, and a torque that acts between the input shaft (21) and the output shaft (22) is calculated on the basis of the twist angle.


    Access

    Download


    Export, share and cite



    Title :

    TORQUE DETECTION DEVICE AND ELECTRIC POWER STEERING DEVICE


    Additional title:

    DREHMOMENTERKENNUNGSVORRICHTUNG UND SERVOLENKVORRICHTUNG
    DISPOSITIF DE DÉTECTION DE COUPLE ET DISPOSITIF DE DIRECTION ASSISTÉE


    Contributors:

    Publication date :

    2015-09-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE



    TORQUE DETECTION DEVICE AND ELECTRIC POWER STEERING DEVICE

    OGUCHI TOSHIAKI / SASAO KUNIHIKO / SUGITA SUMIO | European Patent Office | 2019

    Free access

    TORQUE DETECTION DEVICE, ELECTRIC POWER STEERING DEVICE, AND VEHICLE

    KUWAHARA MASAKI / KAWAI YASUHIRO / ONIZUKA TOSHIYUKI | European Patent Office | 2015

    Free access

    TORQUE DETECTION DEVICE, ELECTRIC POWER STEERING DEVICE, AND VEHICLE

    KAWAI YASUHIRO / SUGITA SUMIO / HATANAKA KAZUYUKI et al. | European Patent Office | 2019

    Free access

    TORQUE DETECTION DEVICE AND ELECTRIC POWER STEERING SYSTEM

    TOYAMA YUICHI | European Patent Office | 2018

    Free access

    TORQUE DETECTION DEVICE, ELECTRIC POWER STEERING DEVICE, AND VEHICLE

    KUWAHARA MASAKI / KAWAI YASUHIRO / ONIZUKA TOSHIYUKI | European Patent Office | 2019

    Free access