Hello,
at first some questions.
What are your values of
INPUT_SCALE and
DEADBAND
?
BR
On 2016-04-06 10:53, Marshland Engineering wrote:
> I finally have my mill table moving under CNC control.
>
> I'm using a 70 volt supply with DCM D6 drives in Torque mode, Mesa 7i48 cards,
> Linear scales for position and 1.2 kw DC brush motors (my guess on the power
> as they are 90 volt motors but no current rating)
>
> The only way I can get any control over the travel is setting P = 0.5 which of
> course makes the position accuracy poor. Any more P and I get sever
> oscillation. With the size of motor and the 1m table, there is quite a lot of
> inertia in the system.
>
> Anyone suggest starting values or any other suggestions to get this under
> control.
>
> Thanks Wallace.
>
>
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