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 ")

Medical Assistant Robot May Roam The Halls Of Hospitals
'Take care, sir.'

Amplified Nerves Lead To Mind-Controlled Prosthetic Hands
'The electrical impulses generated by your brain command everything...' - Martin Caidin, 1972.

FlyCroTug Micro Drones Do Heavy Lifting
'It extended three of its tiny arms sideways to lock on...' - James P. Hogan, 1979.

China Delivery Robot Development Quickens During COVID-2019 Outbreak
'Something very much like a camouflage-painted kangaroo.' - Bruce Sterling, 1994.

 

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

Another Soil Bacterium Eats Plastic
'...the plastic was dissolved before his eyes.'

reLive Memorial Come Back As A Tree
'It was time - time to go again. She touched the leaf. She was wanted.'

Engineered Living Building Materials
'... it was the cheapest building material known.'

Draw Circuits With Conductive Ink
'It's rewiring things... squeezing silver toothpaste in a ribbon along the printed circuitry.'

Arkangel: Automatic Visual Censoring
It's whatever the Party says it is, Winston.

NASA Competition To Design A Bucket Drum For Moon Mining
'There was a heap of discarded ore where Grantline had carted and dumped it...'

Medical Assistant Robot May Roam The Halls Of Hospitals
'Take care, sir.'

No Autonomous Trucks? Wait, What?
'...it resembled conventional human-operated transportation vehicles, but with one exception -- there was no driver's cabin.'

As Big As A Biltong - World's Largest 3D Printer
'Huge and old, it squatted in the center of the settlement park... On the concrete platform... lay a heap of originals to be duplicated.'

Drones Used To Smuggle Contraband Into Prison
'And some mega chip inside so it never runs into anything and no cop ever sees it.'

Are You Ready For Commercial Space Travel?
'It wasn't a pleasant trip; it was a miserable trip on a miserable, undersized tourist rocket...'

Amplified Nerves Lead To Mind-Controlled Prosthetic Hands
'The electrical impulses generated by your brain command everything...'

FlyCroTug Micro Drones Do Heavy Lifting
'It extended three of its tiny arms sideways to lock on...'

Virtual Whitney Houston In Concert
Badda-Bing, Badda-Bang

Robot Teaches Itself To Walk
'My whole idea is to get away from a machine with a set of prearranged instructions, and let them teach themselves by trial and error.'

DARPA's Subterranean Challenge
Let the machines explore the underground city!

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.