Rotopod Rotational Legged Locomotion Robot

The rotopod is a robot that walks using rotational legged locomotion. The robot has a continuously whirling mass attached to the top of the device. The Rotopod takes a step by shortening the length of one of its legs. When the reaction mass traverses that leg, the other two legs lift off the ground for a moment. With no reaction torque, the whole body rotates a prescribed amount, thereby moving in a selected direction.


(Rotopod prototypes)

The device was designed by Damian Lyon and Frank Hsu in the Robotics and Computer Vision lab at Fordham University; their work appears to be based on a paper published by DM Lyons and K. Pamnany and presented in 2005. Rotopod was developed with a grant by the US DoD; the goal was to create a low-cost, lightweight robot that can maintain its stability while moving across uneven ground.

The Rotopod is able to "walk" in a variety of different gaits, none of which correspond to direct, bipedal motion. One is called "spiral walking" in which the robot occasionally describes a full circle in the course of walking. The final result looks like a prolate cycloid. The Rotopod has gaits that cover paths that can be described in terms of width as well as mere length.


(Early Rotopod prototype)

In a sense, the Rotopod is a "virtual wheel" in which the legs act as spokes.

If you think this sounds a little like the spider tripod robot that Arthur C. Clarke describes in his 1972 novel Rendezvous with Rama, you're right. In fact, the authors specifically cite Clarke's idea as one of the inspirations for their design.

Ten metres away was a slender-legged tripod surmounted by a spherical body no larger than a football. Set around the body were three large, expressionless eyes, apparently giving 360 degrees of vision, and trailing beneath it were three whiplike tendrils... It reminded Norton of nothing so much as a three-legged spider, or daddy-long-legs, and he wondered how it had solved the problem - never challenged by any creature on Earth - of tripedal locomotion...

...each leg in turn acted as a pivot around which the creature whirled its body... it also seemed to him that every few 'steps' it reversed its direction of spin, while the three whips flickered over the ground like lightning as it moved.
(Read more about Clarke's spider tripod robot)

The original paper for the Rotopod is Rotational legged locomotion; see also this webpage at Fordham University Rotational Legged Locomotion. Thanks to an anonymous reader for the tip on this story!

Scroll down for more stories in the same category. (Story submitted 6/22/2009)

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 ")

Fuli Bad Dog Robot Is 'Auspicious Raccoon Dog' Bot
Bad dog, Fuli. Bad dog.

Las Vegas Humans Ready To Strike Over Robots
'A worker replaced by a nubot... had to be compensated.' - John Twelve Hawks, 2014.

Somnox Sleep Robot - Your Sleepytime Cuddlebot
Science fiction authors are serious about sleep, too.

VirtualHome: Teaching Robots To Do Chores Around The House
'Just what did I want Flexible Frank to do? - any work a human being does around a house.' Robert Heinlein, 1956.

 

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

Ontario Starts Guaranteed Minimum Income
'Earned by just being born.'

Is There Life In Outer Space? Will We Recognize It?
'The antennae of the Life Detector atop the OP swept back and forth...'

Space Traumapod For Surgery In Spacecraft
' It was a ... coffin, form-fitted to Nessus himself...'

Tesla Augmented Reality Hypercard
'The hypercard is an avatar of sorts.'

A Space Ship On My Back
''Darn clever, these suits,' he murmured.'

Biomind AI Doctor Mops Floor With Human Doctors
'My aim was just not to lose by too much.' - Human Physician participant.

Fuli Bad Dog Robot Is 'Auspicious Raccoon Dog' Bot
Bad dog, Fuli. Bad dog.

Las Vegas Humans Ready To Strike Over Robots
'A worker replaced by a nubot... had to be compensated.'

You'll Regrow That Limb, One Day
'... forcing the energy transfer which allowed him to regrow his lost fingers.'

Elon Musk Seeks To Create 1941 Heinlein Speedster
'The car surged and lifted, clearing its top by a negligible margin.'

Somnox Sleep Robot - Your Sleepytime Cuddlebot
Science fiction authors are serious about sleep, too.

Real-Life Macau or Ghost In The Shell
Art imitates life imitates art.

Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.'

First 3D Printed Human Corneas From Stem Cells
Just what we need! Lots of spare parts.

VirtualHome: Teaching Robots To Do Chores Around The House
'Just what did I want Flexible Frank to do? - any work a human being does around a house.'

Messaging Extraterrestrial Intelligence (METI) Workshop
SF writers have thought about this since the 19th century.

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.