Re: stepper accuracy compared to servos...

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@y...>
wrote:

> Thank you Greg!
>
> I've been trying to "expose" this truth be for years now...
>
> Ballendo
>
> In CCED, "Greg Jackson" <greg@t...> wrote:> For the most part,
> stepper versus servo will not be much of a comparison in
> >accuracy.<snip>
> > The bottom line is that while servos have a number of advantages,
> accuracy is not one of them. Steppers can provide a great deal of
> accuracy at low cost. <snip>
>
> (If you missed the whole post, it's worth reading IMO...)

I believe you refer to the in motion accuracy of steppers to that of
servos and I must agree that steppers are better, however once a
single step is lost the remainder of the motion is far worse than the
worst of the servo drive.

Jeff