Dave Engvall wrote: > Hi Ben, > > Thanks for the ideas, option 3 makes the most sense to me and I guess > the best approach is to rig up a couple of servo motors and start > experimenting. > >> option 3) differentiate the output from above with ddt and feed it >> to the >> needle "spindle" as a velocity command. might be slightly less >> accurate >> than 2 but you won't need to do silly hacks to prevent counter >> overflow.
3A) differentiate the X and Y positions _before_ the hypot, then send the X and Y velocities to the hypot. The hypot is the vector velocity, which is the required spindle velocity (scaled as needed). Other than that, I agree that 3 is the way to go. Regards, John Kasunich ------------------------------------------------------------------------- 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-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
