Re: Going home / more stepper speed!

You can also couple a small DC brush motor to the step motor shaft,
place the scope probes across the DC motor, set coupling to AC and
watch the dynamic behavior of the step motor directly. If you know
the DC motor's Kv, then you can make quantifiable measurements as
well.

Mariss

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <jmelson@a...> wrote:
>
> You can, indeed! The motors have a magnet moving past a coil of
> wire, so any movement of that magnet will induce a voltage (or
current)
> in the coils.
>
> The current pulses from the stepper driver will swamp these smaller
signals,
> but with proper triggering techniques on the scope, you can see
these ringing
> waveforms. You can probably evaluate damping techniques and find
the
> resonance peaks this way, too.
>
> Jon