I made a stepper motor driver that takes step and direction signals and generates the neccessary signals to 1/10 microstep a bipolar motor.  Although I am microstepping, I still notice some resonance which is most pronounced around 5 revs/sec.  Any suggestions on things I could do electrically to reduce this resonance?  As a point of reference, my design seems works no better or no worse than a much more expensive product I acquired from Ebay and am attempting to replace.

I've done a bit of researching and found where one manufacturer says their drive won't resonate due to second order dampening.  They also state that they delay the microstep from the receipt of the step input for 4-50 us depending on motor speed, but I'm not sure if they do this by design or accident or if it is even related to reducing resonance.  Any thoughts?  

Comments appeciated. :)

Aaron
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist