A new ankle foot orthosis: Modeling and control

2017 ◽  
Author(s):  
A. Gmerek ◽  
M. Davoodi ◽  
N. Meskin ◽  
E. Sobhani Tehrani ◽  
R. E. Kearney
Keyword(s):  
Modeling And Control ◽  
Ankle Foot Orthosis ◽  
And Control ◽  
Foot Orthosis

Design and Control of a Low-Cost EMG-Based Soft Robotic Ankle-Foot Orthosis for Foot Drop Rehabilitation

2021 ◽  
pp. 1367-1382
Author(s):  
Nitish Gudapati ◽  
Koushik Kumaran ◽  
S. V. Deepak ◽  
R. Mukesh Kanna ◽  
R. Jinesh ◽  
...  
Keyword(s):  
Low Cost ◽  
Foot Drop ◽  
Ankle Foot Orthosis ◽  
And Control ◽  
Foot Orthosis

MECHANICAL DESIGN AND CONTROL OF AN ACTIVE ANKLE-FOOT ORTHOSIS

2012 ◽  
Vol 45 ◽  
pp. S523 ◽  
Author(s):  
Carlos F. Vasconcelos ◽  
Jorge M. Martins ◽  
Miguel T. Silva
Keyword(s):  
Mechanical Design ◽  
Ankle Foot Orthosis ◽  
And Control ◽  
Foot Orthosis

Simulation and Experimental Analysis of a Portable Powered Ankle-Foot Orthosis Control

2011 ◽  
Author(s):  
Yifan Li ◽  
K. Alex Shorter ◽  
Elizabeth T. Hsiao-Wecksler ◽  
Timothy Bretl
Keyword(s):  
Current System ◽  
Proportional Valve ◽  
Ankle Foot Orthosis ◽  
Performance Improvements ◽  
Binary Event ◽  
Control Scheme ◽  
Event Based ◽  
Functional Gait ◽  
And Control ◽  
Foot Orthosis

A portable powered ankle-foot orthosis (PPAFO) was previously developed using off-the-shelf pneumatic components to explore new opportunities for fluid power in human assist devices. The untethered pneumatically powered ankle-foot orthosis provides both motion control and torque assistance at the ankle via a binary, event-based control scheme that uses solenoid valves. While stable, the binary actuation of the solenoid valves that results from this approach limits the overall performance of the system. This paper addresses the limitations of the current system using a modeling approach for both hardware and control design. Hardware and control configurations were first evaluated using simulations of the modeled PPAFO and shank-foot system during a simplified functional gait task: assistive propulsive torque during stance. These simulations demonstrated that the introduction of a proportional valve and new control architecture resulted in PPAFO performance improvements during the task. These results were then confirmed experimentally with the PPAFO attached to a physical model of a shank and foot.

Development of Intelligent Ankle-Foot Orthosis (i-AFO) with MR Fluid Brake and Control System for Gait Control

2010 ◽  
pp. 75-80 ◽  
Author(s):  
Takehito Kikuchi ◽  
Sousuke Tanida ◽  
Kikuko Otsuki ◽  
Taigo Kakehashi ◽  
Junji Furusho
Keyword(s):  
Control System ◽  
Gait Control ◽  
Mr Fluid ◽  
Ankle Foot Orthosis ◽  
And Control ◽  
Foot Orthosis
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