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 ")

Sketching Robots May Displace Starving Artists
Jeez, robots, leave us with something.

Soft Caterpillar Robot Powered By Light
'the spread-out "puddle" shape she used for soaking up sun...' - Rudy Rucker, 1997.

Flex Robot Surgeon - Let's Hope You're Sedated
There are other insertion points, right, Neo?

Kiwi Dominos Drone Pizza Delivery
If you can deliver diapers, you can deliver pizzas.

 

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

NASA Submarine For Titan
'Straight away from the shore it swam, seeing nothing but flecks of paraffin...'

Sketching Robots May Displace Starving Artists
Jeez, robots, leave us with something.

Three Clues To Limb Regeneration
'Forcing the energy transfer which allowed him to regrow his lost fingers...'

Soft Caterpillar Robot Powered By Light
'the spread-out "puddle" shape she used for soaking up sun...'

Converting Low Temp Waste Heat To Electricity
'Our civilisation was dying in its own waste heat.'

Flex Robot Surgeon - Let's Hope You're Sedated
There are other insertion points, right, Neo?

Liquid Metal Terminator Development Hums Right Along
More research is needed - check!

Kiwi Dominos Drone Pizza Delivery
If you can deliver diapers, you can deliver pizzas.

MIT Robot Helps Out In Delivery Room
Oooee nooomaa oooee. And you thought today's doctors were hard to understand.

Self-Healing Textiles! Say Goodbye To Torn Jeans
'The constant renewal of the fibers, repairing any faults...'

Fleets Of Ford Autonomous Cars In 5 Years
'He urgently addressed the vehicle's AI."Can't we go any faster?'

Electric Head Patch Helps PTSD Patients
'Don't confuse this with the little ten amp neurosis models.'

MEDi Robot Calms The Nervous Patient
'Specially programmed stabilizing surrogate devices.'

NASA's Interplanetary Internet DTN
'This was the center of Interplanetary Communications.'

Superior Morals For Autonomous Cars
Exemplars of military and civic virtue.

Housekeeping Robots Easy To Imagine, Tough To Make
George Jetson had it easy.

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.