Re: [CAD_CAM_EDM_DRO] Re: Geckodrive

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