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Date: | Thu, 18 Dec 2014 11:12:31 -0500 |
Message-ID: | <CALSZ9gqe8r31JNze_PPmGkMeYnNc-_zOXxTvQ1GBn+zt-njEAQ@mail.gmail.com> |
Subject: | Re: [geda-user] Nema 23 stepper motors |
From: | Rob Butts <r DOT butts2 AT gmail DOT com> |
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--001a1136ac4cfd302f050a7fdb9b Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable It's been a while since I've worked on this project. I know I had documentation on how to do micro-stepping with the microchip proc but now I can't find it. On Thu, Dec 18, 2014 at 7:09 AM, Balogh Richard, Ing. <balogh AT elf DOT stuba DOT sk> wrote: > > 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 > > > D=C5=88a 17.12.2014 18:21 Rob Butts wrote / nap=C3=ADsal(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 ou= t 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 wa= s >> still a noticeable chatter. >> >> We then mounted a plate on top with a neoprene gasket lightly compressin= g >> 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 >> > > > --001a1136ac4cfd302f050a7fdb9b Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">It's been a while since I've worked on this projec= t.=C2=A0 I know I had documentation on how to do micro-stepping with the mi= crochip proc but now I can't find it.<br></div><div class=3D"gmail_extr= a"><br><div class=3D"gmail_quote">On Thu, Dec 18, 2014 at 7:09 AM, Balogh R= ichard, Ing. <span dir=3D"ltr"><<a href=3D"mailto:balogh AT elf DOT stuba DOT sk" t= arget=3D"_blank">balogh AT elf DOT stuba DOT sk</a>></span> wrote:<blockquote class= =3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd= ing-left:1ex">Try to find resonant frequency of the whole system and then<b= r> operate the stepper as far as possible from it. Notice that<br> usually there is more than one such frequency. You can find<br> it easily with simly increasing the frequency of the steps,<br> i.e. accelerate the motor constantly.<br> <br> Richard<br> <br> <br> D=C5=88a 17.12.2014 18:21 Rob Butts=C2=A0 wrote / nap=C3=ADsal(a):<div clas= s=3D"HOEnZb"><div class=3D"h5"><br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"> I'm using this motor to turn a shaft.=C2=A0 I have all of the inputs in= a static state with the clock signal turning the motor.<br> <br> With the motor not connected it is silent as it turns.=C2=A0 When I mount i= t on a metal block so that it meshes with the gear of the shaft it puts out= a rattle as it turns,.<br> <br> I found that if you press down on the stepper it doesn't chatter so muc= h.=C2=A0 We put a neoprene gasket under it which helped quiet it but it was= still a noticeable chatter.<br> <br> We then mounted a plate on top with a neoprene gasket lightly compressing t= he stepper.=C2=A0 This quieted it quite a bit.<br> <br> Is this a common issue with steppers or am I not doing something correctly?= =C2=A0 Lastly, does anyone see a problem slightly compressing it?<br> <br> Thanks<br> </blockquote> <br> <br> </div></div></blockquote></div></div> --001a1136ac4cfd302f050a7fdb9b--
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