On Fri, 22 Nov 2019 23:50:39 +
Herzog Raoul wrote:
> dear Gene,
>
> I agree with you, OpenCN is not meant for stepper motor applications, since
> there is no feedback control using encoders.
There are Ethercat nodes for stepper modes available to buy.
As Ethercat is a standard and rather
On Friday 22 November 2019 20:07:22 Gene Heskett wrote:
> On Friday 22 November 2019 19:07:33 Dmitry Yurtaev wrote:
> > > This all sounds as if its is only applicable to servo systems, us
> > > hobbyists with steppers running everything might as well sit back
> > > and enjoy the "what ifs" since
On Friday 22 November 2019 19:07:33 Dmitry Yurtaev wrote:
> > This all sounds as if its is only applicable to servo systems, us
> > hobbyists with steppers running everything might as well sit back
> > and enjoy the "what ifs" since steppers have their own
> > insurmountable jerk problems when
>
> Raoul
>
> -Message d'origine-
> De : Gene Heskett
> Envoyé : samedi 23 novembre 2019 00:36
> À : emc-developers@lists.sourceforge.net
> Objet : Re: [Emc-developers] announcement OpenCN, a new fork of
> LinuxCNC --> Jerk control
>
> On Friday 22 No
>
> This all sounds as if its is only applicable to servo systems, us
> hobbyists with steppers running everything might as well sit back and
> enjoy the "what ifs" since steppers have their own insurmountable jerk
> problems when useing common $40 50 volt drivers, and mesa cards.
>
but us
a high end appkication range, and it was my objective
to modify LinuxCNC for these high end applications.
best regards,
Raoul
-Message d'origine-
De : Gene Heskett
Envoyé : samedi 23 novembre 2019 00:36
À : emc-developers@lists.sourceforge.net
Objet : Re: [Emc-developers] announcement Ope
On Friday 22 November 2019 18:01:41 Herzog Raoul wrote:
> dear Nicklas,
>
> a given DC bus voltage for the drives is indeed *one* reason why the
> jerk *must* be limited, otherwise excessive tracking error occurs. But
> another reason for jerk control is to avoid machine vibration.
>
> best
22 novembre 2019 23:55
À : EMC developers
Objet : Re: [Emc-developers] announcement OpenCN, a new fork of LinuxCNC -->
Jerk control
According electric motor equations commonly available jerk is controlled by
voltage and could be changed instantly which in practice is within one
switching per
According electric motor equations commonly available jerk is controlled by
voltage and could be changed instantly which in practice is within one
switching period while acceleration --> velocity --> position is integrated in
some way from jerk. Velocity will for example add a back-emf changing
