Robot With Broken Leg Learns To Walk Again
Antoine Cully and fellow researchers at the Sorbonne University in Paris say they’ve developed a technique that allows a damaged robot to learn how to walk again in just a few seconds.
(Robots recover from damage by trial and error)
This robot has 18 motors to power its six legs. Consequently, its gait depends on 36 different parameters that describe things like the amplitude of the movement of each motor, the phase shifts between them, the duty cycle for each joint and so on.
The hexapod also has an on-board computer and a depth camera to estimate its walking speed. Its goal is to walk as fast as possible.
Before the robot is released into the wild, Cully and co calculate a behavioural repertoire of some 13,000 different gaits. However, they do not evaluate them; so the robot does not know how good each one is when a certain kind of damage occurs. Instead, the robot does this after it has become damaged.
So when the leg finally becomes damaged, the robot chooses a gait from the subset that minimises contact with the ground for that leg. It then measures how quickly it can walk using this gait.
It then uses this information to choose another gait, measures the resulting walking speed and feeds this information back into the model. After just a handful of tests, it can then select the best gait.
I think I saw this very idea demonstrated in a science fiction film thirty years ago. In the 1984 movie The Terminator, the Terminator robot's leg is damaged. Is the Terminator helpless? No, of course it determines a workable gait, and continues its inexorable pursuit of Sarah Connor, as seen in the following clip:
American roboticists have also worked on this problem. See Starfish Robot Shows Robotic Introspection And Self-Modeling
which features one of my favorite robots, a robotic starfish, which can also determine a new gait for itself if it has a broken leg.
Scroll down for more stories in the same category. (Story submitted 7/26/2014)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 3 )
Related News Stories -
Flying Dragon Robot Transforms In Mid-Air
Terrific prototype video.
MXene Hydrogel Skin For Robots Flexes And Senses
'The plastex swam and whirled like boiling toothpaste...' - JG Ballard, 1962.
Drywall Robot Looking For Sheetrock
Sheetrockers have sure changed since my day. Speaking as someone who as done this, I welcome robots.
Robots Help People Get Dressed, As Predicted In 1931
Yes, people of the future, robots will dress you.
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.
Spicy Tomatoes Created With Genetic Engineering
How about mashed potatoes and brown gravy?
Driverless Hotel Rooms Predicted In 1828
'Did you never see a moving house before?'
Yandex Self-Driving Taxi Is Very Smooth
'The big car was slowing down, its computer brain sensing an exit ahead.'
Shrimp Actually Made Of Algae Is A New Wave Food
Bring in that crop algae.
Cosplay Style Wings Could Work On Moon
'They're lovely! - titanalloy struts as light and strong as bird-bones...'
Tesla Model 3 Has Outside Speaker Grille
Robert Heinlein does it again.
Arizona Luddites Attack Self-Driving Vehicles
'Trucks don't drive by themselves...' Or do they?
Organaut! Russians 3D Print Living Tissue In Space
'For a while your colonists will have to come up [to orbit] to the Hospital...'
WINE Spacecraft To Extract Water From Asteroids
'Yes, strangely enough there was still sufficient water beneath the surface of Vesta.'
Japanese Swordsmiths Take On Asteroids
'... a tiny, rocket-powered projectile, drove towards the mysterious bulk.'
Saturn's Rings To Vanish, Let's Mine Them While We Can
'...the valuable shards of what had once been satellites.'
Humans Could Take Up A LOT Less Space
We'd have a lot more room for gardening...
Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...'
GMO Houseplant Cleans Your Air
Removes compounds too small to be captured by a HEPA filter.
Nova Meat Can 3D Print Your Dinner
Printing out chicken nuggets.
MIT Scientists Create 'Peek-a-Boo Prober' From Jetsons
Well, George, it's the latest thing.
More SF in the News Stories
More Beyond Technovelgy science news stories