Re: [CAD_CAM_EDM_DRO] Re: Encoder resolution

R Rogers wrote:

>Jon Elson <elson@...> wrote:
>
>
>I'm not sure what you mean by "correcting itself at the next ramp
>down".
>
>/// I thought it may when decelerating and the axis is capable of being corrected (because acceleration/stall caused the discrepancy) it might resynchronize the pulse train with the encoder data and continue on. /// Thanks, Ron
>
>
>

It sounds like you are talking about a stepper system. A servo is
ALWAYS "resynchronizing", ie. attempting to keep
the servo loop "closed" by adjusting instantaneous velocity to keep
actual position as close to commanded
as possible. Only when the actual position has lagged too far from
commanded would the excessive following error
condition cause it to stop. This may indicate your part has already
been ruined, depending on the tolerances
involved.

Jon