Bugs item #1768840, was opened at 2007-08-06 22:05 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=106744&aid=1768840&group_id=6744
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: EMC2 Motion Controller Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Marko73 (marko73) Assigned to: John Kasunich (jmkasunich) Summary: Velocity and position loop vs. PID regulator Initial Comment: As I worked with positioning systems there ware always cascade loops consisted of outer position and inner velocity loop. The most simple system is a proportional (P-regulator only) loop for position error-> output=Kp*(Position_setpoint-Position_encoder); Output of position regulator is of course the needed velocity. The velocity loop consists of proportional-integral (PI) regulator . Utilizing only PID regulator for position loop as used in EMC2 is not the right approach, It cannot work good. I had never seen PID regulator for positioning tasks and professional servo systems use cascaded position and velocity loops only. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=106744&aid=1768840&group_id=6744 ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
