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
