Re: Microstepping thru the Tulips

It's both; a "smoothing thing" and an "increase in precision".
Smoothness requires evenly spaced microsteps, evenly spaced
microsteps increase precision.

Mariss

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Paul Kelly" <tech@...> wrote:
>
> I'm with Phil on this.
> To restate; at that time where the step rate becomes a single digit
fraction
> of the PWM freq or chop off time, the PWM is probably at 100% or
the chopper
> is never cutting in. So there is no way to microstep.
>
> None of this is a problem though as the rotational inertia of the
motor+
> screw smooths things out nicely.
> It does, however, highlight the validity of the generalisation that
> microstepping isn't a precision improving technique. It's a low to
mid speed
> smoothing thing.
>
> PK
>
>(snip)