Ries van Twisk wrote: > The forumla might be right, looks a bit long to me :), there are > better/other ways... > > http://mathforum.org/library/drmath/sets/select/dm_center_circle.html > The case for a CNC is even simpler, because we don't have to use any three random points. We can choose to measure points that make the calculation easier. For example, the user drops the edge finder into the hole (ideally reasonably close to the center, but that's not required). The program then moves X only to prove the "left" side, then moves X only to probe the "right" side. The midpoint of that line (X1+X2)/2 is the X center point. Move to the calculated X center point and do the same thing in Y. If you're really touchy about precision, repeat the X measurement from the Y center, and optionally repeat the Y measurement from the refined X center point.
It's not as hard when you can control where the points come from. - Steve ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
