Chris Radek wrote:
> On Sun, Apr 05, 2009 at 11:19:21PM -0500, Jon Elson wrote:
>
>   
>> is there a way to reduce the rate at 
>> which the spindle reverses?
>>     
>
> You could use a limit2 component between motion.spindle-speed-out and
> the DAC.  limit2's maxv setting would limit the spindle acceleration.
>   
Hmmm, OK, I can look into that.  Meanwhile, I patched in a lowpass 
filter the same way, and with limited testing it seems to help in the 
same way.  I have it set now to give a 400 ms acceleration to the 
spindle speed command, and the drive no longer faults.  I'll have to 
actually cut some more threads tomorrow and test it some more.

Just an aside, I see that the lowpass component has some more parameters 
that don't show up in the documentation.

Jon

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