Thank you all for input, I've increesed the acc rate and seems to help a lot. will update to 2.1 next week, will keep posting improovements.
Cheers --- anders <[EMAIL PROTECTED]> wrote: > Hello, Petr > I'm not sure this will help but, do you have > blending enabled(G64 Px.xxx)? > That should help you keep your feedrate up while > contouring. > > http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl > > > /Anders > > petr ruzicka skrev: > > Gents, > > > > Finally reinstalled my emc2 and retuned it and > > dicovered a interesting problem that might be > worth > > investigating. > > Before I start here are the HW specs. P4 1.8Ghz, > 512Mb > > ram, ac servo motors (Yaskawa SDGA model running > in > > torque mode )Machine maximum speed is 8400mm/min > with > > std acc of 450 and 650 for max. Standart f-error > on > > all axes is below 0.03mm at top speed. > > When simple nc code is run, machine runs > perfectly, > > when a circle nc code (simplest ) with g3 and g2 > code > > is loded and executed, machine will run smoothly > and > > will run at full speed. When loaded 3D contouring > > pattern (code is heavier ) with arcs machine will > jerk > > a bit but will still run say satisfactory, > (reaches > > 6500mm/min) when the same pattern is loaded but > code > > without arcs, and executed machine jerks, and > > performane goes to the drain. (jerks, slow feed > (max > > 1500mm/min ) > > When looking at the scope from the servopacks , > > sequence 1 runs , accels, torque and speed lines > are > > smooth and clean , 2nd one has more peaks and > third > > one is a real mess. (will post some pics of graphs > in > > next post ). Since EMC2 has no lookahead and from > what > > I've understood that it only looks for the next > move > > for acc/dec param, would this be a limitation of > the > > whole system? Is here a workaround?, or has emc2 > > reached it's performance limit? Any comments are > > appreciated. > > > > Thank you all for your patience on the IRC > chanel. > > during my reinstall. Cheers > > > > > > > > > ____________________________________________________________________________________ > > Looking for earth-friendly autos? > > Browse Top Cars by "Green Rating" at Yahoo! Autos' > Green Center. > > http://autos.yahoo.com/green_center/ > > > > > ------------------------------------------------------------------------- > > Using Tomcat but need to do more? Need to support > web services, security? > > Get stuff done quickly with pre-integrated > technology to make your job easier. > > Download IBM WebSphere Application Server v.1.0.1 > based on Apache Geronimo > > > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > > > > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support > web services, security? > Get stuff done quickly with pre-integrated > technology to make your job easier. > Download IBM WebSphere Application Server v.1.0.1 > based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
