2012/1/27 Peter C. Wallace <p...@mesanet.com>: > On Fri, 27 Jan 2012, Viesturs L?cis wrote: > >> Date: Fri, 27 Jan 2012 21:58:27 +0200 >> >> From: "[UTF-8] Viesturs L?cis" <viesturs.la...@gmail.com> >> Reply-To: "Enhanced Machine Controller (EMC)" >> <emc-users@lists.sourceforge.net> >> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> >> Subject: Re: [Emc-users] Servo tuning - wtf? >> >> 2012/1/27 Peter C. Wallace <p...@mesanet.com>: >>> >>> On Fri, 27 Jan 2012, Viesturs L?cis wrote: >>> >>>> Date: Fri, 27 Jan 2012 21:49:18 +0200 >>>> From: "[UTF-8] Viesturs L?cis" <viesturs.la...@gmail.com> >>>> Reply-To: "Enhanced Machine Controller (EMC)" >>>> <emc-users@lists.sourceforge.net> >>>> To: "Enhanced Machine Controller (EMC)" >>>> <emc-users@lists.sourceforge.net> >>>> Subject: Re: [Emc-users] Servo tuning - wtf? >>>> >>>> Hello again! >>>> >>>> I tried searching my mailbox with more than 2 years of this mailing >>>> list in it for some "servo tuning for noobs" (actual keywords used >>>> were "servo tuning"), but found only 1 viable thread, which contained >>>> this link; >>>> http://www.newport.com/servicesupport/Tutorials/default.aspx?id=152 >>>> >>>> My problem is: >>>> I can tune servo motor to move smoothly up to ~3600 mm/min, which is >>>> ~1500 RPM for motor. >>>> In higher speeds at one moment motor stalls and oscillates. >>>> Where can I read, how to proceed to reach higher velocities? >>>> I have been playing with P and D parameters, but do not see any >>>> improvement. >>>> >>>> Viesturs >>> >>> >>> >>> Whats is your servo thread period, and how many poles does the motor >>> have? >>> >> >> Servo period is default 1ms. >> Motors have 4 poles, motors have 2048 CPR (8192 >> PPR) encoders. >> >> Viesturs > > > What BLDC mode are you using?
What do You mean - what mode? Config for bldc component is qh > When it fails and oscillates does the motor behave normally when stopped > (equal torque both directions)? Yes, I hit F2 to stop it (sometimes it stops for itself within a second or two) after I release jogging button and then after enabling motion with F2 motor stands still and I can jog again > Do you have the encoder filter on? I guess that no, I do not have encoder filter, since I do not know, what is that. Viesturs ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
