Re: [Emc-users] Servo tuning--plot request
Frank Tkalcevic wrote: >> I have a very well-hidden article on tuning. >> > > Excellent. And very well hidden. Every week I seem to accidentaly find a > great article on the emc web site. > > >> See http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers >> > > > How do you generate your step pulses? When I was tunning, I would keep the > machine on and do an MDI move. This doesn't work too well when the tuning > is so bad it faults when you enable the machine. > These are not "steps", they are the usual trapezoidal ramp-up, coast, ramp-down of a manual jog. A program that did : G01 X1 F25 X0 (repeat) would accomplish the same thing, of course. I usually just do it manually. Actually, this suits me better than a real step. You get 4 distinct regions (stationary, accelerating, running at constant velocity, and decelerating). Each has little differences in behavior (like the accel and decel have friction and mass working in opposite directions on them) and you want all 4 regions to have minimal following error. Jon -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning--plot request
> I have a very well-hidden article on tuning. Excellent. And very well hidden. Every week I seem to accidentaly find a great article on the emc web site. > See http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers How do you generate your step pulses? When I was tunning, I would keep the machine on and do an MDI move. This doesn't work too well when the tuning is so bad it faults when you enable the machine. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning--plot request
Jon and Robert, Thanks--this link looks like just the thing. --Dale At 2:48 PM -0500 8/8/09, Jon Elson wrote: >Dale Grover wrote: >> I'm writing up a little article on EMC and would like to include a >> graphic image of EMC being used to tune a servo. Does anyone have a >> plot (before and after tuning) showing a step response for a servo? >> >I have a very well-hidden article on tuning. it is aimed at my PWM >servo system, but much of the info is applicable generally to any EMC2 >servo configuration. >See http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers > >Jon At 8:42 PM +0100 8/8/09, robert wrote: >What about this page? >http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers > >here is my mill i retro fitted from a Mitsubishi M0 control to EMC >http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,30/id,559/lang,en/ > >the next retrofit is two Hardinge Superslants twin turret lathes. >we are very pleased with our EMC fitted on our Leadwell has brought a >old 1985 machine upto a pretty high standard to todays machines >using its original hardware(servos etc) making is very affordable. > >if you looking for feedback on people that have retro fitted big iron >let us know will happy to add my two cents worth. >rob > > >> Dale Grover wrote: >> >>> I'm writing up a little article on EMC and would like to include a >>> graphic image of EMC being used to tune a servo. Does anyone have a >>> plot (before and after tuning) showing a step response for a servo? >>> >>> Also, would be happy to get feedback on the article so far. Email me >>> if interested. >>> > >> -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning--plot request
Dale Grover wrote: > I'm writing up a little article on EMC and would like to include a > graphic image of EMC being used to tune a servo. Does anyone have a > plot (before and after tuning) showing a step response for a servo? > I have a very well-hidden article on tuning. it is aimed at my PWM servo system, but much of the info is applicable generally to any EMC2 servo configuration. See http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers Jon -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning--plot request
What about this page? http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?PWM_Servo_Amplifiers here is my mill i retro fitted from a Mitsubishi M0 control to EMC http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,30/id,559/lang,en/ the next retrofit is two Hardinge Superslants twin turret lathes. we are very pleased with our EMC fitted on our Leadwell has brought a old 1985 machine upto a pretty high standard to todays machines using its original hardware(servos etc) making is very affordable. if you looking for feedback on people that have retro fitted big iron let us know will happy to add my two cents worth. rob > Dale Grover wrote: > >> I'm writing up a little article on EMC and would like to include a >> graphic image of EMC being used to tune a servo. Does anyone have a >> plot (before and after tuning) showing a step response for a servo? >> >> Also, would be happy to get feedback on the article so far. Email me >> if interested. >> >> > > > -- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.392 / Virus Database: 270.13.47/2290 - Release Date: 08/08/09 > 06:10:00 > > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Servo tuning--plot request
Dale, if the article is to show EMC capabilities in order to promote the retrofitting of EMC I am interested. I have a business relation with two of the same milling centers with very old Fanuc controllers. One is broken (PC problem) and repair will cost more than an EMC retrofit. Also the old Fanuc does not accept any parameters of math and a max. of about 2000 lines of code.So I am trying to convince him to retrofit to EMC to greatly enhance his possibilities. Regards, Rob Dale Grover wrote: > I'm writing up a little article on EMC and would like to include a > graphic image of EMC being used to tune a servo. Does anyone have a > plot (before and after tuning) showing a step response for a servo? > > Also, would be happy to get feedback on the article so far. Email me > if interested. > -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Servo tuning--plot request
I'm writing up a little article on EMC and would like to include a graphic image of EMC being used to tune a servo. Does anyone have a plot (before and after tuning) showing a step response for a servo? Also, would be happy to get feedback on the article so far. Email me if interested. Thanks. --Dale Grover -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
