The December 2022 issue of IEEE Spectrum is here!

Close bar

Stochastic Robots Assemble and Disassemble Themselves

Random motion seems like it might be a terrible way to construct a modular robot, but with smart enough pieces, it works surprisingly well

2 min read
Stochastic Robots Assemble and Disassemble Themselves

"Stochastic" is another way of saying random, and stochastic robots are robots that harness the powers of randomness to construct themselves. It's a fairly simple idea that can result in fairly complex objects: you've got some number of different modules, which can come together to form a robot. Instead of putting the modules together and building the robot directly, you instead just toss all of the modules and shake it really really hard. As the modules randomly run into each other, each is programed to latch on if it happens to bump into a module that it's supposed to be next to in the final design. And if you do this for long enough, eventually you'll end up with a fully assembled robot. Or that's the basic idea, anyway.

The following video demonstrates an interesting application of this concept. Along with lots of assembling modules come a few disassembling modules, whose job is to break up the assembled robots. This creates a system that's sort of a robotic chemical reaction, and by adjusting how long the disassembling bots take to recharge themselves, the overall number of functional robots can be controlled:

[youtube https://www.youtube.com/v/gW9E-6rl4zc?fs=1&hl=en_US&rel=0 expand=1]

One application for these types of robots might be in the medical field, where building a robot inside someone's body could prove to be much more effective than building one outside. All you have to do is inject a bunch of little modules into the bloodstream, they'd randomly whirl about and run into each other and grab on where appropriate, and in a little bit you'd have your robot. You could even program the modules not to assemble themselves until they reached a certain place in the body, and while such precision might take a while (or a whole bunch of injections), the potential is there for extremely precise treatments and repairs.

[ Nils Napp ] VIA [ Autonomous Robots Blog ]

The Conversation (0)

The Bionic-Hand Arms Race

The prosthetics industry is too focused on high-tech limbs that are complicated, costly, and often impractical

12 min read
Horizontal
A photograph of a young woman with brown eyes and neck length hair dyed rose gold sits at a white table. In one hand she holds a carbon fiber robotic arm and hand. Her other arm ends near her elbow. Her short sleeve shirt has a pattern on it of illustrated hands.

The author, Britt Young, holding her Ottobock bebionic bionic arm.

Gabriela Hasbun. Makeup: Maria Nguyen for MAC cosmetics; Hair: Joan Laqui for Living Proof
DarkGray

In Jules Verne’s 1865 novel From the Earth to the Moon, members of the fictitious Baltimore Gun Club, all disabled Civil War veterans, restlessly search for a new enemy to conquer. They had spent the war innovating new, deadlier weaponry. By the war’s end, with “not quite one arm between four persons, and exactly two legs between six,” these self-taught amputee-weaponsmiths decide to repurpose their skills toward a new projectile: a rocket ship.

The story of the Baltimore Gun Club propelling themselves to the moon is about the extraordinary masculine power of the veteran, who doesn’t simply “overcome” his disability; he derives power and ambition from it. Their “crutches, wooden legs, artificial arms, steel hooks, caoutchouc [rubber] jaws, silver craniums [and] platinum noses” don’t play leading roles in their personalities—they are merely tools on their bodies. These piecemeal men are unlikely crusaders of invention with an even more unlikely mission. And yet who better to design the next great leap in technology than men remade by technology themselves?

Keep Reading ↓Show less