Re: Does control s/w affect machine performance? max step rate

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:

>
>
> turbulatordude wrote:
> >I'm not saying that super fast pulses don't have their place, but

is

> >there a real need for them ?
> >


>
> Probably not in the mini-mill. Anyway, 1/10th microstepping makes

the motor

> have 2000 "steps", but I'm pretty sure that it will not respond in

any

> precise
> manner to moves at that resolution. On the other hand, it moves

almost

> silently,
> just the slightest rising and falling tone.
>
> Jon

Thanks for the responses. I can see that there are more than a few
who would want to have a faster step rate, not sure of Han's 300,000
you mention is exceptional, or more common than I might think.

I'm more familiar with the falloff of power in a stepper than the
useable high speed power of a servo, so that make a huge difference
in engineering.

Also, I was thinking 90k or 100k hz as the max. And just doubling
the speed of the drivers seems like a way past mismatched hardware.
When you talk about 300,000 hz,that just, Ballendo says 'blows the
doors off' the current high limit of PC software and parallel ports.

Dave