Altas is hydraulic.  It has 28 hydraulic actuators and one battery-powered
pump.   The battery is 3.7 KWH size   They say it runs for about an hour.
 So he is burning 3.7 Kw  The robot would heat a good size room.

The yellow dog "Spot" is 100% electric with custom BLDC motors, 3 in each
leg.


On Wed, Dec 30, 2020 at 5:19 AM Les Newell <les.new...@fastmail.co.uk>
wrote:

> I saw this shortly after it came out. At the time I wondered if they
> were using hydraulics on Atlas. At one point you can see what looks
> suspiciously like some liquid was spilled on the floor. Looks like one
> of the robots sprung a leak during testing.
>
> Incredible motion control. They've come a long way since Big Dog.
>
> Les
>
> On 30/12/2020 02:20, Chris Albertson wrote:
> > Just when I think I am beginning to understand the basics of controlling
> > motors, PID and MPC controllers, someone has to prove I don't know
> nothing.
> >
> > This is the best demo of  28-axis machine programming I'm ever seen.
> (yes,
> > 28)  "Atlas has one large battery-powered motor and 28 hydraulic motors
> > with encoders.     The movement is controlled by a kind of g-code giving
> > the target locations then Atlas does his best to get there.
> >
> > This is I think to date the best display of machine motion programming
> ever
> >
> > https://youtu.be/fn3KWM1kuAw
> >
>
>
>
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>


-- 

Chris Albertson
Redondo Beach, California

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