Researchers have created a control system that makes robots more intelligent.
Using arm sensors that can “read” a person’s muscle movements, Georgia Institute of Technology researchers have created a control system that makes robots more intelligent. The sensors send information to the robot, allowing it to anticipate a human’s movements and correct its own. The system is intended to improve time, safety and efficiency in manufacturing plants.
It’s not uncommon to see large, fast-moving robots on manufacturing floors. Humans seldom work next to them because of safety reasons. Some jobs, however, require people and robots to work together. For example, a person hanging a car door on a hinge uses a lever to guide a robot carrying the door. The power-assisting device sounds practical but isn’t easy to use.
“It turns into a constant tug of war between the person and the robot,” explains Billy Gallagher, a recent Georgia Tech Ph.D. graduate in robotics who led the project. “Both react to each other’s forces when working together. The problem is that a person’s muscle stiffness is never constant, and a robot doesn’t always know how to correctly react.”
For example, as human operators shift the lever forward or backward, the robot recognizes the command and moves appropriately. But when they want to stop the movement and hold the lever in place, people tend to stiffen and contract muscles on both sides of their arms. This creates a high level of co-contraction.
“The robot becomes confused. It doesn’t know whether the force is purely another command that should be amplified or ‘bounced’ force due to muscle co-contraction,” said Jun Ueda, Gallagher’s advisor and a professor in the Woodruff School of Mechanical Engineering. “The robot reacts regardless.”
The robot responds to that bounced force, creating vibration. The human operators also react, creating more force by stiffening their arms. The situation and vibrations become worse.
“You don’t want instability when a robot is carrying a heavy door,” said Ueda.
The Georgia Tech system eliminates the vibrations by using sensors worn on a controller’s forearm. The devices send muscle movements to a computer, which provides the robot with the operator’s level of muscle contraction. The system judges the operator’s physical status and intelligently adjusts how it should interact with the human. The result is a robot that moves easily and safely.
“Instead of having the robot react to a human, we give it more information,” said Gallagher. “Modeling the operator in this way allows the robot to actively adjust to changes in the way the operator moves.”
Ueda will continue to improve the system using a $1.2 million National Robotics Initiative grant supported by a National Science Foundation grant (1317718) to better understand the mechanisms of neuromotor adaptation in human-robot physical interaction. The research is intended to benefit communities interested in the adaptive shared control approach for advanced manufacturing and process design, including automobile, aerospace and military.
“Future robots must be able to understand people better,” Ueda said. “By making robots smarter, we can make them safer and more efficient.”
The Latest on: Robots
via Google News
The Latest on: Robots
- Can we make our robots less biased than we are?on November 29, 2020 at 2:01 pm
A robot with algorithms for facial recognition, or predicting people’s actions, or deciding on its own to fire “nonlethal” projectiles is a robot that many researchers find problematic. The reason: ...
- Global AI-based Surgical Robots Market 2020 Strategic Market Growth, Key Manufacturers and Industry Demand Analysis to 2026on November 29, 2020 at 11:34 am
Nov 29, 2020 (CDN Newswire via Comtex) -- Global AI-based Surgical Robots Market 2020 by Manufacturers, Regions, Type and Application, Forecast to ...
- American Steel moves into the future with robots, Amazon dealon November 29, 2020 at 4:00 am
American Steel will be producing the steel building frames for a number of Amazon's new order fulfillment centers and it just finished supplying the steel building frame for the new ...
- Thanks to Israeli robots, the future is hereon November 28, 2020 at 12:23 pm
At the Jerusalem College of Technology, we expect to be an integral part of Israel’s path to becoming a major force in robotics around the world.
- Robots for kids: STEM kits and more tech gifts for hackers of all ageson November 28, 2020 at 1:14 am
If you want to spark the imagination of your kids while at the same time giving them a leg up with some of the tech skills they'll need as adults, you can't go wrong by looking at these products as ...
- Surgical Robots Market Is Projected To Reach 6.5 Billion By 2023 From USD 3.9 Billion In 2018, At A CAGR Of 10.4%on November 27, 2020 at 10:14 am
Growth in the surgical robots market can be attributed to factors such as technological advancements, increased funding from the government for surgical robots' "The surgical robots market is ...
- Robots on the rise as Americans experience record job losses amid pandemicon November 27, 2020 at 3:06 am
The pandemic has left millions of Americans unemployed – including many in the hospitality industry, which has seen a rise in the adoption of new tech ...
- Disinfection Robots Market Higher Growth Rate & Forecast 2020 – 2030on November 25, 2020 at 4:00 pm
Outlook. The disinfection robots market may see a silver lining in terms of growth across the forecast period of 2020-2030 on the basis of the soaring ...
- Social Robots Market will Showcase Neutral Impact during 2020-2024 |Size, Share, Trends, Analysis and Forecast | Research Report by Technavioon November 25, 2020 at 11:05 am
Technavio has been monitoring the social robots market and it is poised to grow by USD 878.71 million during 2020-2024, progressing at a CAGR of over 13% during the forecast period. The report offers ...
- $24.2 Billion Military Robots (Land, Marine, Airborne) Market by Application, System, Deployment Method, Range, End User, Mode of Operation, Propulsion and region - Global ...on November 25, 2020 at 8:24 am
The "Military Robots Market by Type (Land, Marine, Airborne), Application, System, Deployment Method, Range, End User (Defense, Homeland Security), Mode of Operation, Propulsion and region - Global ...
via Bing News