Intel

Army Studies How Exoskeleton Technology Adapts to Soldiers

May 11, 2021Hannah Ray Lambert
us army exoskeleton ExoBoot

Army researchers track soldiers as they interact with exoskeletons such as the ExoBoot. Photo courtesy of Neil Adams/US Army.

Army researchers are trying to improve how exoskeleton technology adapts to human behavior, by studying how humans interact with intelligent systems.


Researchers at the US Army Combat Capabilities Development Command (DEVCOM) Army Research Laboratory studied soldiers using the Dephy ExoBoot, an exoskeleton device that gives the user assistance at the ankle joint while performing difficult tasks, like hiking with a heavy rucksack. The ExoBoot has an internal computer and mechanical sensors that independently figure out how and when to assist the wearer.


Soldiers have had difficulty adapting to technologies meant to optimize performance in the past, according to DEVCOM scientists. In the new study, they aim to examine brain signals, muscle signals, movement profiles, and walking performance metrics that can track the state of humans while they use the exoskeleton to see how humans adapt to intelligent technology and how brain signals could be used to help “train” the device.


army exoboot research
Sgt. Maj. Luke Blum, who serves as the DEVCOM acting command sergeant major and the senior enlisted leader for Army Research Laboratory, dons the ExoBoot as part of a study that analyzes how humans and autonomous systems adapt to each other. US Army photo courtesy of Neil Adams.

“These signals could give the exoskeleton a better understanding of the human at any moment so that it can make better decisions on how to assist the human,” DEVCOM ARL research scientist J. Cortney Bradford said in a press release.


Researchers recruited 20 test subjects, including a handful of soldiers, for the study, placing dozens of reflective dots on various parts of their bodies to measure how participants move. Researchers also attached 128 electrodes on participants’ scalps to measure brain signals. Participants then walked on a treadmill both with and without ExoBoot assistance.


Researchers will analyze the data for the next several months and present it at national conferences over the summer to get feedback on research pathways, Bradford said. 


Sensors help Army researchers track and record the state of soldiers as they interact with exoskeletons such as the ExoBoot. US Army photo courtesy of Neil Adams.

“Our longer-term objective is to identify the critical biometrics and integrate them into the exoskeleton controls,” Bradford said.


The Army is in the midst of a four-year, $6.9 million research program to evaluate multiple exoskeleton suits for military use, including designs by American defense firms Lockheed Martin and Dephy. Suits under review are designed to enhance physical performance, allowing soldiers to run faster, jump higher, and, as with the ExoBoot, carry heavier loads.


Read Next: Chinese Troops Showcase Super Soldier Exoskeleton Suits on Contested Himalayan Border



Hannah Ray Lambert
Hannah Ray Lambert

Hannah Ray Lambert is a former staff writer for Coffee or Die who previously covered everything from murder trials to high school trap shooting teams. She spent several months getting tear gassed during the 2020-2021 civil unrest in Portland, Oregon. When she’s not working, Hannah enjoys hiking, reading, and talking about authors and books on her podcast Between Lewis and Lovecraft.

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