Re: Going home / more stepper speed!

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@... 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@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [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/