Re: [CAD_CAM_EDM_DRO] Advice on moving forward

Paul Kelly wrote:

>OK. I'd always thought of microstepping as something you did to increase
>resolution, but I can see how it tackles resonance.. I'll implement it and
>test.
>Many thanks for the responses. I certainly wouldn't have thought of this
>myself.
>
>.....
>
>We'll I implemented 10step microstepping. No difference :-(
>I'll pinch a fast cro from work and take a closer look.
>If the problem is a resonance I should see motor impedance decrease as step
>rate approaches the resonant rate of the motor yes?
>
>

Umm, actually, the impedance would INCREASE at resonance.
You might see some large voltages developing across the motor
terminals. On a bipolar drive, you might want to use the scope
in differential mode across the coil.

Jon