MIT Robotic Fish Is Self-Contained, Autonomous, Fast

A robotic fish created by grad student Andrew Marchese at MIT's Distributed Robotics Laboratory is described as the first self-contained autonomous soft robot that is capable of rapid body motion. No more languorous sinuosity (as much as we enjoy it) - this fish is too quick to catch!


(Soft robotic fish from Distributed Robotics Laboratory )

The robotic fish was built by Andrew Marchese, a graduate student in MIT’s Department of Electrical Engineering and Computer Science and lead author on the new paper, where he’s joined by Rus and postdoc Cagdas D. Onal. Each side of the fish’s tail is bored through with a long, tightly undulating channel. Carbon dioxide released from a canister in the fish’s abdomen causes the channel to inflate, bending the tail in the opposite direction.

Each half of the fish tail has just two control parameters: the diameter of the nozzle that releases gas into the channel and the amount of time it’s left open. In experiments, Marchese found that the angle at which the fish changes direction — which can be as extreme as 100 degrees — is almost entirely determined by the duration of inflation, while its speed is almost entirely determined by the nozzle diameter. That “decoupling” of the two parameters, he says, is something that biologists had observed in real fish.

“To be honest, that’s not something I designed for,” Marchese says. “I designed for it to look like a fish, but we got the same inherent parameter decoupling that real fish have.”

The fish can perform 20 or 30 escape maneuvers, depending on their velocity and angle, before it exhausts its carbon dioxide canister. But the comparatively simple maneuver of swimming back and forth across a tank drains the canister quickly. “The fish was designed to explore performance capabilities, not long-term operation,” Marchese says. “Next steps for future research are taking that system and building something that’s compromised on performance a little bit but increases longevity.”

Regular Technovelgy readers know about my fascination for robotic fish. In his 2002 story Slow Life, science fiction author Michael Swanwick writes about robot fish who help explore distant worlds:

The Mitsubishi turbot wriggled, as if alive. With one fluid motion, it surged forward, plunged, and was gone. Lizzie switched over to the fishcam.

Black liquid flashed past the turbot’s infrared eyes.

Straight away from the shore it swam, seeing nothing but flecks of paraffin, ice, and other suspended particulates...
(Read more about the Mitsubishi turbofish)

Via MIT

Scroll down for more stories in the same category. (Story submitted 3/16/2014)

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 ( 1 )

Related News Stories - (" Robotics ")

Walmart Shopping Cart Robots Will Follow You
'...the machine would carry his bag in its soft plastic jaws...' - John Brunner, 1975.

SpotMini Robot Pierson's Puppeteer-Style
Now they're kind of cute, right?

Elon Musk et. al. OpenAI Household Robot
'Any work a human being does around a house.' - Robert Heinlein, 1956.

Promobot, The Runaway Russian Robot!
'Got yourself a runaway, Jack?' - Michael Crichton, 1985.

 

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

Walmart Shopping Cart Robots Will Follow You
'...the machine would carry his bag in its soft plastic jaws...'

DoNotPay Lawyer Program Contests Parking Tickets
'I want my lawyer program.'

Real Leather Without Cows Modern Meadow Biofabrication
'Plastissue, as any fool can see...'

City Made Of Bone
'The cheapest building material known...'

SpotMini Robot Pierson's Puppeteer-Style
Now they're kind of cute, right?

Brick By Brick, Building Martian Bases
Don't try to boost everything from the surface of the Earth.

Elon Musk et. al. OpenAI Household Robot
'Any work a human being does around a house.'

BRUISE Smart Injury Detection Suit
'... Bee could see that three of them were disabled and two of them damaged.'

Tesla Model S Is Also A Boat (Sort Of)
'This Dick Dare contraption of yours...'

Promobot, The Runaway Russian Robot!
'Got yourself a runaway, Jack?'

Rowbot Small Autonomous Farm Robot
'...The tiny red glints of self-guided tractors.'

Amazon's Alexa To Recognize Emotions
Oh, Hal understood their emotions, all right.

Cool 'Single-Person Spaceships' Have Better SF Name
'A cabin so small, you couldn't stand up with the air lock closed..'

First Robot Suicide Has Science Fiction Roots
'What had happened to prevent my death?'

First US Clinical Trial For Wearable Artificial Kidney
'Wholly mechanical organs...'

Open Bionics To Produce Deus Ex Prosthetic Designs
Be a part of a science fictional future.

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.