Re: Geckodrive

Here is a similar type device/concept. They are referring to it as
stall detection. I don't believe it will slow down the velecity
though for an attempted recovery.

http://www.amis.com/products/motor_controllers/amis_30624.html

Chris

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:
>
> lcdpublishing wrote:
>
> >Mariss, this isn't making any sense, but I think it has to do
with
> >what you call a stall and what I call a stall.
> >
> >To me, a motor is stalled when it no longer rotates. Are you
saying
> >that your GREX device will keep that motor moving no matter
what?
> >
> >
> >
> OK, Mariss is calling a stall the condition when steps are lost,
and the
> actual
> position of the motor is no longer known. His scheme allows the
electrical
> drive to never get more than 90 electrical degrees out of phase
with the
> magnetic/physical position of the motor. That will be, I think,
about
> 1.8 mechanical
> degrees on the typical 200-step motor. This is the situation
where the
> motor
> develops maximum torque, by the way.
>
> Jon
>