Re: acceleration profille

Hi Alan,

Clicking on the link as well as pasting the URL into IE via notepad
both produced the same result:

http://controlchips.com

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Peter

--- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> Hi Michael,
>
> A linear acceleration or deceleration might be easier to do, but
not the
> best. You might take a look at a manual for the CY545 stepper
> controller from Cybernetic Microsystems.
>
> http://controlchips.com
>
> Look at the rate tables, and the plots of
acceleration/deceleration.
> There's also some useful information on steppers in the manual.
>
> I use a similar table in my controller program to do
> acceleration/deceleration. An acceleration term determines how
fast the
> controller program runs up/down the table.
>
> Don't know what you mean by "skipping a step" at almost full
speed. The
> time between steps simply changes.
>
> Alan KM6VV
>
>
> Michael Holm wrote:
> >
> > I also made a stepper controlling software. This one runs under
windows, and
> > does linar acceleration.
> >
> > I did some thinking on that, and was about to make a user-editable
> > acceleration curve, because I was in doubt if it should be
linar.But if you
> > think hard about it, it makes no sense to make it curved curve,
as that
> > would mean that you'd have to skip just one step at some point,
when running
> > almost full speed, and that have to be even harder then starting
at full
> > speed.
> >
> > So it has to be linar interpolated.
> >
> > Draw a curved acceleration curve on a piece of squared paper
(using only
> > full squares, representing one step) and you'll understand what I
mean.
> >
> > --Michael