4 ms·

Looks like Atlas may have had an accident during filming, there's a hydraulic fluid stain on the floor: https://youtu.be/fn3KWM1kuAw?t=163 https://youtu.be/fn3K

by gene-h 6y ago

Looks like Atlas may have had an accident during filming, there's a hydraulic fluid stain on the floor: https://youtu.be/fn3KWM1kuAw?t=163 https://youtu.be/fn3KWM1kuAw?t=163 And it must also be said that these are preprogrammed maneuvers on a closed course...

kasperni 6y ago
> there's a hydraulic fluid stain on the floor: The robot equivalent of performance anxiety.
- high_byte 6y ago
  luckily it doesn't wear pants, that could've been embarrassing
- dvirsky 6y ago
  There's a point where you can actually see the robot dripping fluid.
rhn_mk1 6y ago
I just wonder to what extent this is pre-programmed. Surely the engineers gave some sort of high level description, and let the robots figure out the rest. Also, it's probably not possible to acount for all the variability of the environment beforehand, so the "recording" played back does not contain every move to the last detail.
- dbcurtis 6y ago
  They would have specified target trajectories. Then a solver tries to make that happen.
  - dbcurtis 6y ago
    Now that I think about it, all the robots have synchronized trajectories. There has to be some kind of time sync among the robots also.
  - rhn_mk1 6y ago
    That answers the recording part, but is this the abstraction the programers use? Setting trajectories manually would be hard to do while keeping them balanced, especially with moves involving legs.
    - dbcurtis 6y ago
      A trajectory is a series of time-stamped poses, specified in world coordinates. As to where they come from, yes you need tooling to keep from going crazy. At Anki, they used animation industry tools, so I am told. The solver handles the balance part in real time, using current sensor input.
tinco 6y ago
The poses are programmed, but the balance can't be. At least.. if they would be that would be a significant achievement as well I think. So the robots have target poses they should approximate, but how to get there, and without falling over, that's seriously impressive.
- dbcurtis 6y ago
  Exactly right. SOTA is to continuously solve a trajectory optimization problem in realtime. Probably at a rate of a fews 10’s of milliseconds per solution.
  - AareyBaba 6y ago
    What is SOTA ?
    - legolas2412 6y ago
      State of the art
    - PeterisP 6y ago
      state of the art
- deleted 6y ago
  [deleted]

by gene-h 6y ago

kasperni 6y ago

> there's a hydraulic fluid stain on the floor: The robot equivalent of performance anxiety.

high_byte 6y ago
luckily it doesn't wear pants, that could've been embarrassing
dvirsky 6y ago
There's a point where you can actually see the robot dripping fluid.

rhn_mk1 6y ago

I just wonder to what extent this is pre-programmed. Surely the engineers gave some sort of high level description, and let the robots figure out the rest. Also, it's probably not possible to acount for all the variability of the environment beforehand, so the "recording" played back does not contain every move to the last detail.

dbcurtis 6y ago
They would have specified target trajectories. Then a solver tries to make that happen.
- dbcurtis 6y ago
  Now that I think about it, all the robots have synchronized trajectories. There has to be some kind of time sync among the robots also.
- rhn_mk1 6y ago
  That answers the recording part, but is this the abstraction the programers use? Setting trajectories manually would be hard to do while keeping them balanced, especially with moves involving legs.
  - dbcurtis 6y ago
    A trajectory is a series of time-stamped poses, specified in world coordinates. As to where they come from, yes you need tooling to keep from going crazy. At Anki, they used animation industry tools, so I am told. The solver handles the balance part in real time, using current sensor input.

tinco 6y ago

The poses are programmed, but the balance can't be. At least.. if they would be that would be a significant achievement as well I think. So the robots have target poses they should approximate, but how to get there, and without falling over, that's seriously impressive.

dbcurtis 6y ago
Exactly right. SOTA is to continuously solve a trajectory optimization problem in realtime. Probably at a rate of a fews 10’s of milliseconds per solution.
- AareyBaba 6y ago
  What is SOTA ?
  - legolas2412 6y ago
    State of the art
  - PeterisP 6y ago
    state of the art
deleted 6y ago
[deleted]