The December 2022 issue of IEEE Spectrum is here!

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I know we've been posting a bunch about quadrotors recently, but it's hard not to when they keep doing cool new stuff. This demo comes from Pat Bouffard and Anil Aswani and shows (eventually) a quadrotor catching tossed ping-pong balls starting at about 1:40:

All that other malarkey at the beginning of the vid (you didn't skip over it, did you?) talks about the programming that goes into making sure that this quadrotor, with what I think we can all agree is a fairly small container, can reliably make catches. Essentially, the robot pays special attention to what's physically going on with itself, using experience to compensate for thing like increased lift due to ground effect.

This technique is called LBMPC (that's Learning Based Model Predictive Control), and you can see it in action when the quadrotor needs to move sideways to catch the ball, as it figures in the fact that it's going to drift a little bit after it cancels out its lateral movement. Clever.

So, if Berkeley's quadrotor teams up with this robot, this robot, maybe this robot, and of course these robots, you've got yourself a halfway decent chance at giving any Little League team a run for their juice boxes, and I for one would pay money to see it happen. 

[ UC Berkeley EECS ]

Thanks Pat!

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
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

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?

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