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Posted by Jon Elson on April 25, 2006, 5:45 pm
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Morris Dovey wrote:
>I've had the machine and have been using it intensively for about
>three years now. Early on I discovered that there were feed speeds
>that caused the steppers to produce some truly horrible system
>resonances (I don't dare feed at exactly 1"/sec, for example).
>
Well, it is pretty clear your machine doesn't have Gecko stepper drivers,
then. They really fix the old stepper mid-band resonance problem like
no other drive.
(I'm generally a servo snob, but the Gecko drives are the first that make
me see that steppers actually can give good performance without insane
mechanical damping schemes.)
Jon
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>three years now. Early on I discovered that there were feed speeds
>that caused the steppers to produce some truly horrible system
>resonances (I don't dare feed at exactly 1"/sec, for example).
>