Sorry, didn't mean to step on toes. The writer of that portion of the wiki seemed to be doing OK until they got to the part about the osc and hunting of servos.
Dave On Apr 19, 2008, at 7:01 AM, Kirk Wallace wrote: > On Fri, 2008-04-18 at 22:15 -0700, Dave Engvall wrote: >> On Apr 18, 2008, at 9:09 PM, Kirk Wallace wrote: > ... snip >>> becomes too large -- this will allow the system to avoid hunting or >>> oscillating, a common servo problem." >> >> Sorry, Kirk but well tuned servo systems don't oscillate or hunt. > > Those were Wikipedias words, not mine. > > ... snip > >>> But, I don't think you can tune a real servo system down to the >>> last few >>> encoder counts, or am I wrong? >> >> I think you will find servo systems reporting following errors at low >> speeds in the 1E-4 to 1E-5 range >> and 0.0005 to 0.001 at rapids. >> >> Dave > > My HNC has .00004" per encoder pulse. I need to do the math but > typically with my tuning, I am guessing I get within 10 pulses. > > -- > Kirk Wallace (California, USA > http://www.wallacecompany.com/machine_shop/ > Hardinge HNC/EMC CNC lathe, > Bridgeport mill conversion, doing XY now, > Zubal lathe conversion pending > Craftsman AA 109 restoration > Shizuoka ST-N/EMC CNC) > > > ---------------------------------------------------------------------- > --- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save > $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http:// > java.sun.com/javaone > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
