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A DAMPING CONTROL METHOD FOR LOWER-LIMB PROSTHESES
A DAMPING CONTROL METHOD FOR LOWER-LIMB PROSTHESES
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机译:下肢假体的阻尼控制方法
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摘要
A damping control method for lower-limb prosthesis, comprising the following steps: Isolate the driving motor of the 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 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 signal to generate controllable motor current, which will result in controllable braking torque under the magnet field of the motor. This invention can be applied to prosthesis control.
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