Weekly NxR Meeting

We have a visiting speaker from RIC. Tommaso Lenzi will be giving a talk titled "Enhancing Human Movement Ability using Wearable Robots.” 

Abstract:

Wearable robots have the potential to revolutionize healthcare in the near future by providing an effective mean to integrate (i.e., exoskeletons) or replace (i.e., prosthesis) the function of the human body, ultimately restoring the physiological movement ability and the independent living of individuals affected by motor disorders. From a control perspective, providing movement assistance using a wearable robot requires to accurately detect the human movement intention, and react timely to provide the specific assistance required by the user. At the same time, the learning ability of humans plays a fundamental role in achieving a proper synergy with the robot action. For instance, humans can re-modulate their muscle activation patterns in order to cope with and exploit the extra torque provided by the robot. In this way, they can reduce their effort without losing control of the movement. In this talk, I will discuss about the several challenges related to the design of effective assistive control strategies for powered exoskeletons and robotic prostheses. Specifically, I will focus on walking assistance. Starting from some considerations about walking biomechanics and energetics, I will discuss two case-studies. The first consists in the implementation on a powered exoskeleton of a hip-assistance control that can reduce the users muscle effort both at the hip and ankle joint level as compared to normal walking. The second study involves the design and preliminary testing of a novel control strategy for powered prostheses that allows to regulate online the energy injected into the gait cycle by modulating the ankle pushoff torque during the late stance-phase of walking.

 

 

Date: 
Friday, October 25, 2013 - 12:00pm to 1:00pm
Location: 
ME Conference Room
2145 Sheridan Rd.
Evanston , IL
United States
Illinois