MIT's Cheetah Robot Runs Easier Than Real Cheetah

MIT's robot cheetah is apparently able to run with less effort than an actual cheetah, wasting little energy as it trots for 90 minutes on a treadmill (note that this is a different device than Boston Dynamic's cheetah robot).


(MIT's relaxed cheetah robot trots effortlessly)

The key to the robotís streamlined stride: lightweight electric motors, set into its shoulders, that produce high torque with very little heat wasted.

The motors can be programmed to quickly adjust the robotís leg stiffness and damping ratio ó or cushioning ó in response to outside forces such as a push, or a change in terrain. The researchers will present the efficiency results and design principles for their electric motor at the International Conference on Robotics and Automation in May.

Sangbae Kim, the Esther and Harold E. Edgerton Assistant Professor in MITís Department of Mechanical Engineering, says achieving energy-efficiency in legged robots has proven extremely difficult.

To understand how an electrically powered system might waste little energy while running, the researchers first looked at general sources of energy loss in running robots. They found that most wasted energy comes from three sources: heat given off by a motor; energy dissipated through mechanical transmission, such as losses to friction through multiple gear trains; and inefficient control, such as energy lost through a heavy-footed step, as opposed to a smoother and more gentle gait.

The group then came up with design principles to minimize such energy waste...

... The cheetah robot, according to Kimís calculations, falls around the efficiency range of humans, cheetahs and hunting dogs.

Currently the team is assembling a set of new motors, designed by Jeffrey Lang, a professor of electrical engineering at MIT. Kim expects that once the group outfits the robot with improved motors, the cheetah robot will be able to gallop at speeds of up to 35 mph, with an efficiency that rivals even fliers. The researchers are convinced that this approach can exceed biological muscle in many aspects, including power, torque and responsiveness.

Fans of Neal Stephenson's 1992 novel Snow Crash may recall the Rat Thing:

The body is Rottweiler-sized, segmented into overlapping hard plates like those of a rhinoceros. The legs are long, curled way up to deliver power, like a cheetah's. It must be the tail that makes people refer to it as a Rat Thing, because that's the only ratlike part - incredibly long and flexible.
(Read more about Stephenson's Rat Thing)

Read more at MIT.

Scroll down for more stories in the same category. (Story submitted 3/6/2013)

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 ( 0 )

Related News Stories - (" Robotics ")

Unusual Twist On Woman Dates Robot
'My hearing, vision and awareness went along with that excellent imitation of a young Adonis...' - Manly Wade Wellman, 1938.

Blood Battery Robotic Fish
'With one fluid motion, it surged forward, plunged, and was gone.'- Michael Swanwick, 2002.

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...' - Raymond Z. Gallun, 1936.

Jeff Bezos Tries Waldoes (Robotic Hands)
'Waldo put his arms into the primary pair before him...' - Robert Heinlein, 1942.

 

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

Michelin Self-Sealing Tires On Ford's Explorer
'...a seal of compressed plastifoam to save the air.'

Mushroom Eats Plastic, Saves Planet
Fungus Amongus, SaveUs!

Juggalo Face Paint Disrupts Facial Recognition
'... designed to foil facial recognition systems.'

Mojipic Smart Voice Vehicle Emojis
KITT, what's your response?

Unusual Twist On Woman Dates Robot
'My hearing, vision and awareness went along with that excellent imitation of a young Adonis...'

BrainNet Triple Telepathic Gaming Threat
'In the gloomy half-darkness the three idiots sat babbling.'

AVAS Noisemakers Required For EVs By EU
'...a sound tape to supply the noise of a soi-disant "[internal combustion]" engine...'

Pun Generation Via Neural Nets
'You said you wanted him to be able to distinguish between laugh-power in different gags...'

Blood Battery Robotic Fish
'With one fluid motion, it surged forward, plunged, and was gone.'

Lightyear One Solar-Powered Electric Car (Design By Heinlein)
'It drew its power from six square yards of sunpower screens on its low curved roof.'

'Agression Detectors' Don't Work When Spying On Students
'The professional agitators had also learned how to modulate their voices below the danger level...'

Mining Of Golden Asteroid Foretold In 1898 Science Fiction
'This must be a golden planetóthis little asteroid.'

Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.'

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...'

CNSILK Robotic Spider Builder
'We could certainly spin a web right through the Solar System, if we can think of a good use for one.'

Starshade Will Help Space Telescope To Search For Exoplanets
'When it found planetary systems in its field, automatically shifted upon them a higher powered telespectroscope ...'

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.