DAMPING CONTROL METHOD FOR DRIVING BELOW-KNEE PROSTHESIS BY MOTOR
    1.
    发明公开
    DAMPING CONTROL METHOD FOR DRIVING BELOW-KNEE PROSTHESIS BY MOTOR 审中-公开
    损失控制方法,用于驱动下膝关节假体由电机

    公开(公告)号:EP3037071A1

    公开(公告)日:2016-06-29

    申请号:EP14901444.1

    申请日:2014-10-21

    申请人: Peking University

    IPC分类号: A61F2/70

    摘要: A damping control method for lower-limb prosthesis, which includes the following steps: Isolate the driving motor of the main transmission structure from the driving voltage; The motor is driven to rotate by the force that results from the locomotion of human's CoM (Center of Mass), and generates alternating induced voltage, when the motor behaves as a generator; Connect the output terminals of the motor with a full-bridge rectification circuit that is made of Schottky diodes to transform the alternating induced voltage to direct-current voltage; Connect the output terminals of the rectification circuit with a controlled switch such as transistors or MOSFETs to form a closed circuit, which will generate induced current from the induced voltage; Control the on-off ratio of the switch with the Pulse-Width-Modulation (PWM) signal to generate controllable motor current, which will result in controllable braking torque under the magnet field of the motor. This invention can be widely applied to prosthesis control.