MIT Robot Cheetah Video Shows Gait Transition

Slick new video from MIT's Cheetah team shows the transition point where the robot goes from a trotting gait to a full gallop.


(MIT's Cheetah Robot - faster than a real cheetah?)

The MIT Cheetah—about the size and weight of a real cheetah—requires approximately 1 kW when running at 22 km/h, which translates to a cost of transport, or COT (defined as power consumption divided by weight times velocity), of 0.52. The team says this COT performance rivals that of running animals of the same size. By comparison... Boston Dynamics' BigDog has a COT of 15, which is far less efficient than their biological counterparts.

The MIT team, led by Professor Sangbae Kim, believes that electric motors are a better choice than hydraulics... His group developed its own "three phase permanent magnet synchronous motor," which reportedly doubles the torque density of the commercial motors they were using in the robot. With further improvements, the motors will help reduce the robot's COT to 0.33, which is "between the efficiency of runners and fliers in nature."

And they also incorporated biomimetic principles. A Kevlar tendon stretches from the foot to the knee, reducing the stress on the legs during stride by close to 60 percent. The bones themselves are made primarily out of a light polyurethane foam-core which is covered in a high stiffness resin, which makes them both light and strong. The researchers also gave their robot a spine, which is actuated not by individual motors but a differential system driven by the action of the legs...


(Diagram for MIT's Cheetah robot)

I know that fans of Neal Stephenson's 1992 novel Snow Crash are thinking of 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)

However, I'd also include the slamhound from William Gibson's 1986 novel Count Zero; I remember what an impression it made on me when I first read it when the novel first came out.

THEY sent A SLAMHOUND on Turner's trail in New Delhi, slotted it to his pheromones and the color of his hair. It caught up with him on a street called Chandni Chauk and came scrambling for his rented BMW through a forest of bare brown legs and pedicab tires. Its core was a kilogram of recrystallized hexogene and flaked TNT.

Via IEEE.

Scroll down for more stories in the same category. (Story submitted 5/16/2013)

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 ")

PoseiDrone Tentacled Undersea Robot Like HG Wells'
'Its motion was so swift, complex, and perfect that at first I did not see it as a machine...'- HG Wells, 1898.

Robot With Broken Leg Learns To Walk Again
Robots that learn to walk again are now on the march.

World's First Android Newscaster (Video)
'The autonomic TV interviewer, camera in its hand, blocked his path.'- Philip K. Dick, 1965.

Japan Invites Robot Athletes To Gather For 2020 Olympics
It's time we started to get rid of that distinction between metal and flesh, and IC and neuron, don't you think?

 

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

Survival Seed Vault Low Cost Life Bank
'They existed in the Life Bank, as did virtually every plant...'

PoseiDrone Tentacled Undersea Robot Like HG Wells'
'Its motion was so swift, complex, and perfect that at first I did not see it as a machine...'

Bionic Hand Provides 'Lifelike' Sensations, Like Luke Skywalker's
'Take care, sir.'

Man-Made Space Leaf Creates Oxygen From Water And Light
'What better purifying machine is there than... grass?'

Robot With Broken Leg Learns To Walk Again
Robots that learn to walk again are now on the march.

World's First Android Newscaster (Video)
'The autonomic TV interviewer, camera in its hand, blocked his path.'

Japan Invites Robot Athletes To Gather For 2020 Olympics
It's time we started to get rid of that distinction between metal and flesh, and IC and neuron, don't you think?

CV Dazzle Anti-Surveillance Make-Up
Let's hear it for the vague blur!

LG Display's 18 Inch Flexible OLED Panel Is Awesomely Cool
'...a wide sheet of clear material suddenly flared with light and swirling color.'

Tiniest Microphone Inspired By Fly
'Transmitting to its manipulator, far away now, all that it heard through its ear microphones...'

NASA's Highway In The Sky For Drones
Traffic is everywhere.

Palcohol Powdered Alcohol - Try Or Ban?
'I had a small can of powdered alcohol disguised as tooth powder...'

pd.id Personal Drink ID Device Like Dune 'Poison Snooper'
'The jeweled hands clutching drinks (and the unobtrusive inspections with tiny remote-cast snoopers)...'

Monsieur Bartending Robot
'He poured the liquids into his maw...'

Cities Detect Gunfire Acoustics With ShotSpotter
'Sound trackers on the roof...'

Cruise Automation's 'Highway Autopilot' For $10K
'It cut her out of the stream of vehicles and reduced the speed of her car...'

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.