Robotic devices have been used to help people walk or run in rehabilitation settings, but until now, they’ve been tethered and limited to a single action, like walking or running. In a paper published in Science today, a team of researchers explain how they’re going to change that. The researchers — from Harvard University and the University of Nebraska Omaha — have developed a portable exosuit that uses AI to assist users with both walking and running.
The robotic exosuit is part of DARPA’s former Warrior Web program and has been years in the making. Worn at the waist and thighs, it’s designed to work with the wearer’s gluteal muscles by adding torque to the hip joint. An actuator attached to the user’s lower back is controlled by an algorithm and allows the exosuit to adjust to different gaits. In early tests, the device reduced users’ metabolic rates when walking by nine percent and by four percent when they were running, compared to when they walked or ran without assistance.
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