DLR Robotic Hand-Arm Is Super-Strong, Super-Tough

Researchers at the Institute of Robotics and Mechatronics, part of the German Aerospace Center (DLR), have created what may be the toughest and strongest robotic hand ever made. The fingers can exert a force of up to 30 newtons at the fingertips, and is tough enough to withstand repeated blows from a hammer, as shown in the video below.


(From Anthropomorphic robot hand from German Aerospace Center (DLR) )

The hand is fully anthropomorphic, with five articulated fingers powered by a set of 38 tendons, each attached to a individual motor encased in the forearm. The full DLR Hand-Arm System "mimics the kinematic, dynamic and force properties of the human arm using variable passive compliance actuators" and has a total of 52 drives and more than 100 sensors.

The new hand can catch a ball thrown from several meters away. The actuation and spring mechanisms are capable of absorbing the kinetic energy without structural damages.

But the hand can’t always be in a stiff mode. To do manipulation tasks that require accuracy, it’s better to have a hand with low stiffness. By adjusting the tendon motors, the DLR hand can do just that.

To operate the hand, the researchers use special sensor gloves or simply send grasping commands. The control system is based on monitoring the joint angles. It doesn’t need to do impedance control, says Markus Grebenstein, the hand's lead designer, because the hand has compliance within the mechanics.

To detect whether an object is soft and must be handled more gently, the hand measures force by keeping track of the elongation of the spring mechanisms.

“In terms of grasping and dexterity, we’re quite close to the human hand,” he says

Robert Heinlein directed our attention to robotic hands in his 1956 novel The Door Into Summer. When designing Flexible Frank, the all-purpose robot, great attention was paid to the manipulators provided to the robot:

Hands I could order from the atomics-engineering equipment companies who supplied Hired Girl's hands, only this time I would want the best, with wide-range servos and with the delicate feedback required for microanalysis manipulations and for weighing radioactive isotopes...
(Read more about Heinlein's robot hand)

From IEEE Spectrum; see also the full DLR Hand-Arm-System.

Scroll down for more stories in the same category. (Story submitted 1/26/2011)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 2 )

Related News Stories - (" Robotics ")

Prototype Robotic Masseur Has The Touch
'The automatic massager began to fumble gently...'

Medical Assistant Robot May Roam The Halls Of Hospitals
'Take care, sir.'

Amplified Nerves Lead To Mind-Controlled Prosthetic Hands
'The electrical impulses generated by your brain command everything...' - Martin Caidin, 1972.

FlyCroTug Micro Drones Do Heavy Lifting
'It extended three of its tiny arms sideways to lock on...' - James P. Hogan, 1979.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

A Passing Drone Has Covid-19 Advice
'Gold dots against blue, basketball-sized, twelve feet up.'

Prototype Robotic Masseur Has The Touch
'The automatic massager began to fumble gently...'

Trash Sorting AI Robot Presages Skynet, Thanks A Lot
Keep your head down, Kyle Reese.

Electric Unicycle Is A Tumblebug
'A tumblebug does not give a man dignity, since it is about the size and shape of a kitchen stool, gyro-stabilized on a single wheel.'

Another Soil Bacterium Eats Plastic
'...the plastic was dissolved before his eyes.'

reLive Memorial Come Back As A Tree
'It was time - time to go again. She touched the leaf. She was wanted.'

Engineered Living Building Materials
'... it was the cheapest building material known.'

Draw Circuits With Conductive Ink
'It's rewiring things... squeezing silver toothpaste in a ribbon along the printed circuitry.'

Arkangel: Automatic Visual Censoring
It's whatever the Party says it is, Winston.

NASA Competition To Design A Bucket Drum For Moon Mining
'There was a heap of discarded ore where Grantline had carted and dumped it...'

Medical Assistant Robot May Roam The Halls Of Hospitals
'Take care, sir.'

No Autonomous Trucks? Wait, What?
'...it resembled conventional human-operated transportation vehicles, but with one exception -- there was no driver's cabin.'

As Big As A Biltong - World's Largest 3D Printer
'Huge and old, it squatted in the center of the settlement park... On the concrete platform... lay a heap of originals to be duplicated.'

Drones Used To Smuggle Contraband Into Prison
'And some mega chip inside so it never runs into anything and no cop ever sees it.'

Are You Ready For Commercial Space Travel?
'It wasn't a pleasant trip; it was a miserable trip on a miserable, undersized tourist rocket...'

Amplified Nerves Lead To Mind-Controlled Prosthetic Hands
'The electrical impulses generated by your brain command everything...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.