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 ")

Digit V2 Bipedal Robot From Agility Robotics
Oh, and now I suppose someone will develop the robotic porch pirate.

Hail SmartCan! Your Trash Bin Takes Itself Out
'...a waste can twenty feet away stirred into life.' - Harry Harrison, 1959.

Robot Tuna Swims As Fast As Nature's Tuna
'With one fluid motion, it surged forward, plunged, and was gone.' - Michael Swanwick, 2002.

Shapeshifter Robot Is Comprised Of Cobots
'Its lines wavered, flowed, and then painfully reformed. For an interval, the device struggled with itself...' - Philip K. Dick, 1957.

 

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

Orbital Display's Low Earth Orbit Advertisements
'A vast circle of scarlet stars came up into the greenish desert dusk.'

Neuromorphic Computing Hardare
'He had constructed an organ, a brain, of metal, entirely inorganic and lifeless...'

Vascularized Human Skin 3D Printed
Hey Fishboy!

Trillionaires Still Earth-Bound
'I shall never forget the sight... when the yellow gleam of the precious metal appeared under the star dust.'

Digit V2 Bipedal Robot From Agility Robotics
Oh, and now I suppose someone will develop the robotic porch pirate.

3D Printed Dubai Building Is World's Largest
'This thing will start at one end of ...a house and build it complete to the other end, following drawings only.'

Grow Plants On Moon Or Mars!
'In contrast to the airless desolation outside, the interior of this five-acre greenhouse was the one most desirable place to be.'

California Gets Shockwave Rider-Style Avoidance Zones
'It was cheaper to pay the refugees to go without up-to-the-minute equipment.'

Microbot Interstellar von Neumann Explorers
'Evidently they have never had a planet of their own...'

Hail SmartCan! Your Trash Bin Takes Itself Out
'...a waste can twenty feet away stirred into life.'

Finally! Microsoft Surface Neo And Surface Duo Implement Excellent Courier Idea
'Runcible, whose pages were thicker and more densely packed with computational machinery...'

Tap Strap 2 Now With Air Mouse
'He waved his hand and the circuit switched abruptly.'

Legal Profession Now Fairly Bristling With AI
'The virtual counsel appeared to be about forty-five years old and prosperous.'

Entire Planet Modeled In New MS Flight Sim
'CIC uses [it] to keep track of every bit of spatial information that it owns...'

FlyZoo Robot Hotel By Alibaba
'... hotels that specialized in non-human service.'

Implanted Memories Provide Songs To Birds
Finches can't tell the difference.

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.