Society of Robots - Robot Forum

General Misc => Robot Videos => Topic started by: Admin on December 09, 2009, 12:55:04 AM

Title: manipulation by air (who needs a robot arm?)
Post by: Admin on December 09, 2009, 12:55:04 AM

Nothing scientifically revolutionary, but a pretty neat device to add on to a robot.

Robo-Air Jet System Makes Objects Float (http://www.youtube.com/watch?v=HkhMCCOHFmM#)

Title: Re: manipulation by air (who needs a robot arm?)
Post by: Razor Concepts on December 09, 2009, 02:28:01 PM

How does that work when the ball is not above the device? Something has to be sucking the robot towards the device while the air pulses repel it.

Title: Re: manipulation by air (who needs a robot arm?)
Post by: z.s.tar.gz on December 09, 2009, 04:49:19 PM

It has to do with a vortex around the stream because of the two air sources I assume.
btw, onion peeler mode is my favorite

Title: Re: manipulation by air (who needs a robot arm?)
Post by: parallax on December 10, 2009, 04:58:50 PM

Absolutely incredible!  :o How do you think they are keeping track of the object's coordinates when they are moving the balls through the hoops? I didn't see anything that looked like sensors. Computer vision perhaps? So fascinating!

Title: Re: manipulation by air (who needs a robot arm?)
Post by: McFire on December 10, 2009, 11:14:34 PM

Quote

Stereo vision cameras track the objects, and a control algorithm uses the position data and a fluid dynamics model to adjust the air jet, varying its speed and direction to keep the object in equilibrium.

http://spectrum.ieee.org/blog/robotics/robotics-software/automaton/robo-air-blower-makes-ping-pong-balls-defy-gravity (http://spectrum.ieee.org/blog/robotics/robotics-software/automaton/robo-air-blower-makes-ping-pong-balls-defy-gravity)

Title: Re: manipulation by air (who needs a robot arm?)
Post by: parallax on December 11, 2009, 04:20:50 PM

Thanks for the link, McFire  :)  Something about this concept and its execution really intrigues me

Title: Re: manipulation by air (who needs a robot arm?)
Post by: SmAsH on December 13, 2009, 04:27:49 PM

Wow, that's kinda cool... What got me was how it could control the object while it wants directly above it...

Title: Re: manipulation by air (who needs a robot arm?)
Post by: Joker94 on December 13, 2009, 05:21:13 PM

the air jet was power full  :D

the amaizing bit for me was the water bottle as it is not uniform and has uneven parts and for the fruit that matter as well

over all that was really good. ;D

Title: Re: manipulation by air (who needs a robot arm?)
Post by: z.s.tar.gz on December 14, 2009, 03:21:14 PM

I'd like to see it do something with both flat and curved surfaces, like a stapler or something.
The water bottle was cool though, I'll have to admit.

Title: Re: manipulation by air (who needs a robot arm?)
Post by: Hawaii00000 on December 14, 2009, 03:55:45 PM

I've seen people do this stuff with leaf blowers, its really neat.