Designing of a model of electrical controlled above knee prothesis

In this study, a mechanical model of electrically controlled above knee prosthesis was designed. Since the parameters such as ergonomic structure, height, weight, energy consumption, velocity, torque and electromechanical control are very important for prosthesis, the new prosthesis was designed considering these parameters. In literature, studies are mostly performed in flat surfaces because of straight forwardly designing and manufacturing above knee prosthesis. However in this study, a universal joint that provides foot inversion and eversion was added to the ankle in order to make the prosthesis to walk different surface conditions. Likewise a toe joint was also mounted for achieving walking convenience and aesthetics. Finally, forward kinematics model was derived and position and orientation data was obtained during the walking.