Re: [CAD_CAM_EDM_DRO] Rolled vs. Ground ballscrews

The problem is getting the parameters tuned to compensate for flex and
backlash without oscillating. Any slight wear in the system will change
the parameters considerably. Even putting a heavy load on the table
could alter things enough to cause problems if you aren't very careful.

Les

cstrudwicke@... wrote:

>Les,
>
>If the servo control loop has feedforward terms (eg velocity and acceleration feedforward) then you can have the best of both worlds ie tight steady state errors and whilst in motion.
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>CS
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