Re: [CAD_CAM_EDM_DRO] Re: quadrature endcoder woes?

eewizard_1 wrote:

>Hi Aaron
>
>Is it a stepper motor and can you spin it a LOT faster? At 1RPM you
>only get 3.3 full steps/sec on a 1.8 degree stepper motor and unless
>you use a GOOD driver with a high microstep count you might be seeing
>the motor cogging. I have seen that with low cost drives but with a
>Compumotor drive/indexer that has 25000 steps/rev it goes away.
>
>Try 500 RPM and it may look like you expect.
>
>Al
>
>

Thanks to everybody for their suggestions.

As some suggested, I tried cleaning but the results were to no avail.

The traces looked normal once I got above a couple hundred RPMs.

In accordance to the suggestion above, I dug out an old API drive and
set it up for 1/64 microstepping. At 1 rpm, the traces looked fine.
The only irregularities I can now see is when I accelerate through the
resonace band.

Regards,
Aaron