A power assist wheelchair includes a wheel, an electric motor that drives the wheel, an encoder that detects rotation of the electric motor, and a control device that controls the electric motor. The control device includes a total torque value calculator that calculates a total torque value based upon only a detection signal of the encoder, an assist torque value calculator that calculates an assist torque value based upon an output current of the electric motor, a manual torque value calculator that calculates a manual torque value based upon a difference obtained by subtracting the assist torque value from the total torque value, and a target current determiner that determines a target current of the electric motor based upon the manual torque value.


    Access

    Download


    Export, share and cite



    Title :

    Power assist wheelchair, power assist unit for wheelchair, control device for power assist wheelchair, control method for power assist wheelchair, and program


    Contributors:

    Publication date :

    2022-09-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer




    WHEELCHAIR PULLING ASSIST TOOL

    MATSUMORA KOJI | European Patent Office | 2016

    Free access


    Using Ultrasonic Sensors to Assist a Wheelchair User

    Sanders, D. A. / Stott, I. / Goodwin, M. et al. | British Library Conference Proceedings | 1994


    A MODULAR POWER ASSIST SYSTEM FOR WHEELCHAIR USERS THAT DOUBLES AS A SCOOTER-BOARD FOR NON-WHEELCHAIR USERS

    SRINIVASAN SUJATHA / ANAND MANISH / JESUDAS JUSTIN VIJAY et al. | European Patent Office | 2025

    Free access