This wearable robot arm can hold fruit and punch through walls
Researchers are making progress in the effort to develop safe and practical supernumerary robotic limbs.
- Unlike exoskeletons or prostheses, supernumerary robotic limbs function independently of the human skeleton.
- This new example of the technology attaches to the wearer's hips, and can lift 11 pounds.
- The arm currently isn't autonomous. Before A.I. can control supernumerary limbs, researchers first have to figure out how to make the technology understand and execute what the wearer wants it to do.
The world of wearable technology is set to evolve far beyond today's smartwatches and fitness trackers. One burgeoning field is wearable robots. From exosuits that help us walk more efficiently to robotic arms that give people superhuman strength, wearable robots could transform the way we interface with the physical world in the future.
One glimpse into that strange future: A robotic arm that attaches to the wearer's hip and includes a three-fingered claw. The arm can help people perform various tasks, like picking fruit, painting a wall, playing badminton and smashing a hole through a wall, as a recent video shows.
Developed by researchers at the Université de Sherbrooke in Canada, the hydraulic arm currently isn't autonomous — it requires a third-party to manually control it with a remote. But from a proof-of-concept standpoint, it shows how the technology could be used in the future as a kind of robotic assistant. The 9-pound arm can:
- Lift 11 pounds
- Swing at 7.6 mph
- Move with three degrees of freedom
Supernumerary robotic limbs
When movies depict wearable robots, they usually show exoskeletons ("Iron Man") or prostheses (Luke Skywalker's robotic hand). But supernumerary robotic limbs — like the new robotic arm — seem to be an underrepresented genre, at least in the popular consciousness. This genre describes robotic limbs that function independently of the human skeleton, and which "actively perform tasks similar to or beyond natural human capabilities," as a 2017 research paper states.
One hurdle in developing safe and effective supernumerary robotic limbs is figuring out how to attach the technology to the body so that it doesn't interfere with the wearer. For example, a robotic arm could throw someone off balance if it swings its arm too fast, or it could become uncomfortable if it's not attached strategically.
With the new robotic arm, the researchers attached the device to the wearer's hips with a rigid harness, close to the center of mass. It seems to work well enough, though you can see how someone could be thrown off balance. There's also the fact that it must be physically tethered to a nearby power system.
Robotic limbs and human intent
But the biggest obstacle in developing supernumerary robotic limbs lies in artificial intelligence. For a robotic arm (or legs, fingers, etc.) to be practical, the device has to understand and execute what the wearer wants it to do. Here's how Catherine Véronneau, the lead author of a recent paper about the technology, described this problem to IEEE Spectrum:
"For instance, if the job of a supernumerary pair of arms is opening a door while the user is holding something, the controller should detect when is the right moment to open the door. So, for one particular application, it's feasible. But if we want that SRL to be multifunctional, it requires some AI or intelligent controller to detect what the human wants to do, and how the SRL could be complementary to the user (and act as a coworker). So there are a lot of things to explore in that vast field of "human intent."
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Famous physicists like Richard Feynman think 137 holds the answers to the Universe.
- The fine structure constant has mystified scientists since the 1800s.
- The number 1/137 might hold the clues to the Grand Unified Theory.
- Relativity, electromagnetism and quantum mechanics are unified by the number.
Younger Americans support expanding the Supreme Court and serious political reforms, says new poll.
- Americans under 40 largely favor major political reforms, finds a new survey.
- The poll revealed that most would want to expand the Supreme Court, impose terms limits, and make it easier to vote.
- Millennials are more liberal and reform-centered than Generation Z.
A 2020 study published in the journal of Psychological Science explores the idea that fake news can actually help you remember real facts better.
- In 2019, researchers at Stanford Engineering analyzed the spread of fake news as if it were a strain of Ebola. They adapted a model for understanding diseases that can infect a person more than once to better understand how fake news spreads and gains traction.
- A new study published in 2020 explores the idea that fake news can actually help you remember real facts better.
- "These findings demonstrate one situation in which misinformation reminders can diminish the negative effects of fake-news exposure in the short term," researchers on the project explained.
Previous studies on misinformation have already paved the way to a better understanding<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDU1NzQ4NC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNjE2Mjg1Nn0.hs_xHktN1KXUDVoWpHIVBI2sMJy6aRK6tvBVFkqmYjk/img.jpg?width=1245&coordinates=0%2C800%2C0%2C823&height=700" id="fc135" class="rm-shortcode" data-rm-shortcode-id="246bb1920c0f40ccb15e123914de1ab1" data-rm-shortcode-name="rebelmouse-image" alt="fake news concept of misinformation and fake news in the media" />
How does misinformation spread?
Credit: Visual Generation on Shutterstock<p><strong>What is the "continued-influence" effect?</strong></p><p>A challenge in using corrections effectively is that repeating the misinformation can have negative consequences. Research on this effect (referred to as "continued-influence") has shown that information presented as factual that is later deemed false can still contaminate memory and reasoning. The persistence of the continued-influence effect has led researchers to generally recommend avoiding repeating misinformation. </p><p>"Repetition increases familiarity and believability of misinformation," <a href="https://engineering.stanford.edu/magazine/article/how-fake-news-spreads-real-virus" target="_blank" rel="noopener noreferrer">the study explains</a>.</p><p><strong>What is the "familiarity-backfire" effect?</strong></p><p>Studies of this effect have shown that increasing misinformation familiarity through extra exposure to it leads to misattributions of fluency when the context of said information cannot be recalled. <a href="https://journals.sagepub.com/doi/10.1177/0956797620952797#" target="_blank" rel="noopener noreferrer">A 2017 study</a> examined this effect in myth correction. Subjects rated beliefs in facts and myths of unclear veracity. Then, the facts were affirmed and myths corrected and subjects again made belief ratings. The results suggested a role for familiarity but the myth beliefs remained below pre-manipulation levels. </p>