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 -
China Deploys Robot Traffic Police
'The robot came up smooth and fast as a rocket...' - Harry Harrison, 1958.
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.
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.
China Deploys Robot Traffic Police
'The robot came up smooth and fast as a rocket...'
Better Than Dune Chromoplastic? This Guy Might Have Done It
'But when Old Father Sun departs, the chromoplastic reverts to transparency in the dark.'
Gather, An AI Warehouse Inventory Drone Startup
'It extended three of its tiny arms sideways to lock onto the registration pins...'
China's Artificial Intelligence-Enhanced Education
'The grey gas not only cut off his vision, but also his other senses...'
Orbital Manufacturer 'Made in Space' Gets $73 Million NASA Contract
'Mass-produced in the orbiting factories...'
Soli Gesture Tech Will Be In Google Pixel 4
'I enjoy watching this way, but - He waved his hand and the circuit switched abruptly.'
Uber Eats Pairs Cars With Drones
Fresh grub? Let's hope they aren't delivering grubs.
Space-Based Solar Power Roundup
SF writers popularized and elaborated on this idea a generation before the first patents were filed.
Lost Language Meanings Found By Machine Learning
'The autopilot would need data before it could begin a translation...'
'Aerogel' Sheets For Martian Gardens
'Sealed to the ground along all the sides, Honey, he growled...'
France's 'Red Team' Of Science Fiction Authors
'They're the only experts we have.'
Dim The Sun With Stratospheric Controlled Perturbation Experiment
'Those twin volcanoes; d'ye see them, Mr. Renner?'
Mashambas Skyscraper Farm Design Wins
'...a towering eighty-story structure like the office In-and Out baskets stacked up to the sky.'
Self-Driving Tractors From China Plan Ahead
'Machines that seemingly with full consciousness walked out into the fields to do their daily work.'
Jet-Powered Hoverboard Works!
L'audace, l'audace, toujours l'audace!
Nobe 3-Wheel Electric Vehicle Parking Like I, Robot
Spidercar, Spidercar, does whatever a spidercar does.
More SF in the News Stories
More Beyond Technovelgy science news stories