Re: [CAD_CAM_EDM_DRO] typical servo speeds

At 01:59 PM 7/17/2007, you wrote:

>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.

Hmmm...

>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?)

Well, in the 1970's the removable disk "pack" head positioners were
accurate to a few tenths and were pretty fast. Now the head
positioners in hard disks will go to a position on command in
milliseconds. They should be cheap (from dead disks) and reliable.

>Just looking for ball park opinions.

I hope his is in the ballpark...


David G. LeVine
Nashua, NH 03060