Re: typical servo speeds

Graham,
Interesting question. If you are talking about wings then weight is
probably an issue. For slower wings I would look at muscle wires. For
high speed flapping of small wings I would consider piezo motors. With
either choice you can easily do multiple degrees of freedom with fully
proportional control without gearboxes. You can do positional feedback
using fiber optic transducers. The amount of light passed through a
fiber is proportional to the bend. With a few fibers and an ARM class
micro you should be able to do closed loop control.

Roger

>
> I'm enquiring for someone else, they wish to make a system to simulate
> the flapping of a hummingbird wing or something of that nature, rather
> than a fixed mechanism a fully controllable one is desired.
>
> Assuming very low load can a servo motor oscillate at 20hz and if so
> what sort of amplitude might be possible and what sort of
> controllability? Also which servo types are preferred (pcb motors?)
>
> Just looking for ball park opinions.
>
> Cheers,
>
> Graham
>