15 votes

An electric new era for Atlas

5 comments

  1. gowestyoungman
    Link
    Im always torn watching Boston Dynamics videos, between "Holy cow, thats incredible dexterity and control for a humanoid robot!" and "Holy cow, I hope I never see that thing walk into my room at...

    Im always torn watching Boston Dynamics videos, between "Holy cow, thats incredible dexterity and control for a humanoid robot!" and "Holy cow, I hope I never see that thing walk into my room at night! Especially if its holding a weapon!" Watched one too many Terminator movies I guess.

    8 votes
  2. [4]
    Deely
    (edited )
    Link
    Boston Dynamics retire hydraulic Atlas and presents new electric one. There is a small video of new Atlas, and what fascinates me is that Boston Dynamics was able to create electric actuators that...

    Boston Dynamics retire hydraulic Atlas and presents new electric one.

    There is a small video of new Atlas, and what fascinates me is that Boston Dynamics was able to create electric actuators that works on a level with hydraulic.

    6 votes
    1. [3]
      tauon
      Link Parent
      Could you or anyone else interested in this ELI5 me the advantages of electric vs. hydraulic robot systems? I’m assuming the actuators you mentioned could be fitted into a smaller space compared...

      Could you or anyone else interested in this ELI5 me the advantages of electric vs. hydraulic robot systems? I’m assuming the actuators you mentioned could be fitted into a smaller space compared to an equivalent hydraulic system? But at the same time they at least seem like something that’d be more expensive to fit into the robot (at least with current price/technology constraints)?

      5 votes
      1. Akir
        Link Parent
        There's quite a number of differences and it would depend on the exact actuator design in question. The main difference between hydraulic and electromagnetic actuators from a practical perspective...

        There's quite a number of differences and it would depend on the exact actuator design in question. The main difference between hydraulic and electromagnetic actuators from a practical perspective is that there's less complications involved with the electromagnetic designs because there is no liquid involved which needs to be contained and manipulated. If you did a deep dive you'd find a bunch of strengths and weaknesses when you compare them.

        11 votes
      2. first-must-burn
        Link Parent
        I don't know much about hydraulics, but I was involved with CHIMP back in the day, and for that project they wound their own motors to get the size/torque balance they wanted for each joint. I've...

        I don't know much about hydraulics, but I was involved with CHIMP back in the day, and for that project they wound their own motors to get the size/torque balance they wanted for each joint.

        I've never heard Atlas operate, but I know some of the other hydraulic robots like Big Dog were really loud.

        Edit to add: the video I linked to was from the DARPA challenge run where CHIMP self righted. I cannot describe the excitement that it generated seeing that work in competition. Even though we placed third, I don't think any of the other humanoid robots there could have recovered from a fall like that.

        6 votes