dear Gene, I agree with you, OpenCN is not meant for stepper motor applications, since there is no feedback control using encoders.
In my application I even use "dual feedback" with a rotary encoder on the motor axis, AND a linear encoder for each axis ! I'm definitely working in 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 <[email protected]> Envoyé : samedi 23 novembre 2019 00:36 À : [email protected] Objet : Re: [Emc-developers] announcement OpenCN, a new fork of LinuxCNC --> Jerk control 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 regards, > > Raoul 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. Watching your 5 axis work that block of brass is certainly a revelation. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
