Design and Control of an Active Electrical Knee and Ankle Prosthesis.

Proceedings of the ... IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics
Frank SupMichael Goldfarb

Abstract

This paper presents an overview of the design and control of an electrically powered knee and ankle prosthesis. The prosthesis design incorporates two motor-driven ball screw units to drive the knee and ankle joints. A spring in parallel with the ankle motor unit is employed to decrease the power consumption and increase the torque output for a given motor size. The device's sensor package includes a custom load cell to measure the sagittal socket interface moment above the knee joint, a custom sensorized foot to measure the ground reaction force at the heel and ball of the foot, and commercial potentiometers and load cells to measure joint positions and torques. A finite-state based impedance control approach, previously developed by the authors, is used and experimental results on level treadmill walking are presented that demonstrate the potential of the device to restore normal gait. The experimental power consumption of the device projects a walking distance of 5.0 km at a speed of 2.8 km/hr with a lithium polymer battery pack.

Citations

Jan 8, 2010·IEEE/ASME Transactions on Mechatronics : a Joint Publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division·Frank SupMichael Goldfarb
Mar 21, 2015·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Aaron Young, Levi Hargrove
Apr 1, 2015·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·John SpaniasLevi Hargrove
Jan 21, 2017·Biomedical Engineering Online·Michael WindrichPhilipp Beckerle
Sep 21, 2013·Annals of Biomedical Engineering·Aaron J YoungLevi J Hargrove
Nov 7, 2020·Journal of Biomechanics·A Doğukan Keleş, Can A Yucesoy

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