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Date:	Thu, 18 Dec 2014 13:09:10 +0100
From:	"Balogh Richard, Ing." <balogh AT elf DOT stuba DOT sk>
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Subject:	Re: [geda-user] Nema 23 stepper motors
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Try to find resonant frequency of the whole system and then
operate the stepper as far as possible from it. Notice that
usually there is more than one such frequency. You can find
it easily with simly increasing the frequency of the steps,
i.e. accelerate the motor constantly.

Richard


Dňa 17.12.2014 18:21 Rob Butts  wrote / napísal(a):
> I'm using this motor to turn a shaft.  I have all of the inputs in a static state with the clock signal turning the motor.
>
> With the motor not connected it is silent as it turns.  When I mount it on a metal block so that it meshes with the gear of the shaft it puts out a rattle as it turns,.
>
> I found that if you press down on the stepper it doesn't chatter so much.  We put a neoprene gasket under it which helped quiet it but it was still a noticeable chatter.
>
> We then mounted a plate on top with a neoprene gasket lightly compressing the stepper.  This quieted it quite a bit.
>
> Is this a common issue with steppers or am I not doing something correctly?  Lastly, does anyone see a problem slightly compressing it?
>
> Thanks

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