Re: Going home / more stepper speed!

--- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> Ballendo,
>
> You're saying that "modified" can correct for the unequal torque? a
> little extra hardware?
>
> And too bad we didn't snag a frog (gig?) before the prices went up!
>
> Alan KM6VV
>
>
> ballendo@y... wrote:
> >
> > Alan,
> >
> > "Modified" half stepping increases the current on the "one phase"
> > positions. Pretty simple to implement, and 1/2 step is MUCH better
> > for adding it. Boost single phase to 1.414 or reduce "two phase"
> > to .707 by adjusting the ref volts to the chopper.
> >
> > Scope traces can be seen in most stepper app handbooks...
> >
> > Hope this helps.
> >
> > Ballendo
> >
> > >I never cared for half steps before, due to the unequal torque
> > >between steps (from what I understand). Seems to be useful in
> > >our applications!
> > >
> > >However I'm a little curious about being able to see the
> > >STEPPER "ringing" (overshoot, resonance's..) you describe on a
> > >SCOPE?
> >
> > Welcome to CAD_CAM_EDM_DRO@e...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
> >
> > Addresses:
> > Post message: CAD_CAM_EDM_DRO@y...
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@y...
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@y...
> > List owner: CAD_CAM_EDM_DRO-owner@y..., wanliker@a...
> > Moderator: jmelson@a... timg@k... [Moderator]
> > URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > bill,
> > List Manager
> >
> > FAQ: http://www.ktmarketing.com/faq.html
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/