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Best actuator options for a Biped?

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Gertlex:
Unless you're building a human-sized biped (>4 ft high, or so), you're going to use servos.

Are you planning a humanoid biped or just the legs?

ErikY:

--- Quote from: Gertlex on January 27, 2013, 10:36:17 AM ---Unless you're building a human-sized biped (>4 ft high, or so), you're going to use servos.

Are you planning a humanoid biped or just the legs?

--- End quote ---

Eventually I would like to build a humanoid, right now I am still in the learning phase.

Out of curiosity, if you were to go over 4 foot, what would you use in that case?



Gertlex:
I don't know what I'd do, personally. I based my statement on the fact that that's about the height at which I start seeing non-servo walkers (e.g. PETMAN).

ErikY:
Gertlex, Thanks for the reply.

PETMAN is very interesting, I did not even know BD was doing a humanoid like that, let alone PETMAN and Atlas, I had seen Big Dog many times, but not that.

It looks to me like they are using hydraulics as actuators, does anyone know more about the type of hydraulics they are using?


I have been looking into air muscle, and I just cannot find any realistic options for air pressure, switching valves to actuate different muscles, etc.


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