Damping control method for lower-limb prostheses
US10335293B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2014 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Jan 25, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/708
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A damping control method for a lower-limb prosthesis, comprising the following steps: isolate the driving motor of the lower-limb prosthesis from the driving voltage; the driving motor is driven to rotate by the force that results from locomotion of a human's CoM (Center of Mass), and generates an alternating induced voltage, when the driving motor behaves as a generator; connect output terminals of the driving motor with a full-bridge rectification circuit that is made of Schottky diodes to transform the alternating induced voltage to a direct-current voltage; connect the output terminals of the full-bridge 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 controlled switch with a Pulse-Width-Modulation signal to generate a controllable motor current, which will result in controllable braking torque under the magnet field of the driving motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.