Exoskeleton Robot and our control approach. (a) Developed carbon frame exoskeleton robot. (b) Proposed selective assist strategy. In our approach, assistive policy is selected among candidate daily motions by using an EMG-based movement classification method constructed in a positive-unlabeled (PU)-learning framework and assists user’s motion with a newly developed lightweight exoskeleton robot. Credit: IEEE Robotics and Automation Letters (2022). DOI: 10.1109/LRA.2022.3148799
Researchers from the RIKEN Guardian Robot Project and collaborators have used a combination of lightweight material engineering and artificial intelligence to create an exoskeleton robot that could help people with mobility impairments. An important element of the new device is technology that allows the skeleton to effectively guess the intentions of the user.
Robotic exoskeletons promise to play an important role in supporting an aging population. Essentially, they are suits that people can wear, allowing them to exert strength when their old bodies are not capable of exerting strength themselves. However, developing exoskeletons has been hampered by the fact that they are generally heavy, and if not properly controlled can act as hindrances rather than assistance. Thus, it is important to develop exoskeletons that are both lightweight and can assist the efforts of the user without hindering their efforts.
The current research involved two main elements. First, the researchers developed a lightweight, carbon fiber-based exoskeleton for the lower body that was attached to the thighs and lower legs of users. The exoskeleton was built with highly backdrivable actuators, so that it did not impede the movements of users even when the actuators were not activated. And importantly, the research team turned to artificial intelligence to see if they could use it to predict how the user wanted to move. They used a method known as PU-learning, or positive and unlabeled, to have the exoskeleton learn to correctly read the intentions of the user, based on measurements of the muscle activities of the user. The PU-classification method allows the use of ambiguous data, by combining positively labeled data, which the machine knows is correct, with other unlabeled data that might either be positive or negative, allowing the artificial intelligence to learn from data that is not all labeled.
For the experiment, participants performed various movements that can begin in the same way—standing up, crossing their legs, leaning forward, and repositioning themselves in a chair. The exoskeleton used machine learning to guess when they were actually trying to stand up and then provided assistance for the movement.
The experiment was successful. According to Jun-ichiro Furukawa of the Guardian Robot Project, the first author of the paper, the results were better than conventional systems that use fully labeled data in situations where user’s behavior other than the target sit-to-stand motion can occur, indicating that the method could be expanded to other movements as well.
According to Jun Morimoto, who led the research team, “The key element of our research is that when controlling a robot to assist human movement, it is important to develop it based on the assumption that humans will behave in ways that are not in the learning data.”
The research was led by researchers from the RIKEN Guardian Robot Project, a project dedicated to creating robotic devices that can assist people who require assistance, in collaboration with researchers from the RIKEN Center for Brain Science, ATR Computational Neuroscience Labs, Kyushu University, and Kyoto University.
Original Article: Robotic exoskeleton uses machine learning to help users stand up
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- The Cyborgs Among Us: Exoskeletons Go Mainstream
Rather than face a life lived flat on his back, Monty dreamed up an exoskeleton to help him regain his independence. He taught himself the concepts of robotics and control systems, and went ...
- This Exoskeleton Could Save a Worker’s Life
There are roughly a dozen global players in the workplace exoskeleton market at the moment, and other smaller players, according to Norma Steller, German Bionic Systems’ chief product manager. About a ...
- Exoskeleton Robots Market 2023 Expected to Reach Highest Growth Rate, Industry Size and Share with Trends Forecast to 2027
Global “Exoskeleton Robots Market” Research 2023 offers extensive insights on market segmentations, geographical ...
- Wearable Robotic Exoskeleton Market Report 2023 Research for Dynamic Growth, Future Trends, Share and Recent Developments Forecast to 2029
Get a sample PDF of the report at Key player companies in global Wearable Robotic Exoskeleton Market are: The report providing dashboard overview of past and present performance as well as an ...
- German Bionic Systems Showcases Exoskeletons for Workplaces at CES 2023
German Bionic Systems presents AI-powered exoskeletons to protect workers in physically demanding jobs, at CES 2003.
Go deeper with Google Headlines on:
[google_news title=”” keyword=”exoskeleton robot” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]
Go deeper with Bing News on:
- Mrs. Brinker: Learning through household chores
Parents who feel overwhelmed with laundry and cleaning can try enlisting their kids for help. The lessons learned will pay off for both of you.
- Tips to make concepts approachable and learning more fun for children
Studies shouldn't be a burden for kids; instead, they should be full of experiments, creativity, exploration, and unconventional learning. Check out ways to make concept easy and learning fun for ...
- ‘A true gentleman with an amazing civic sense:’ Model-turned-actor Vishwanath PU on working with ‘Thala’ Ajith for Thunivu
Vishwanath would be playing the role of an army officer in H Vinoth’s upcoming thriller Thunivu, starring Ajith Kumar and Manju Warrier ...
- Pu`ukoholā Heiau National Historic Site - Hawaii
Pu`ukoholā Heiau National Historic Site is located ... It's a great place to go if you're into Hawaiian history and culture or you just love learning more about different cultures' history ...
- Parents frustrated as water crisis forces all Jackson Public Schools into remote learning
All 33 JPS buildings will be closed Thursday and Friday when the district was scheduled to reopen after the winter break, thanks to the water crisis.
Go deeper with Google Headlines on:
[google_news title=”” keyword=”PU-learning” num_posts=”5″ blurb_length=”0″ show_thumb=”left”]