Sebastian Kuzminsky wrote: > Frank Tkalcevic wrote: >>> Hm, the hm2 encoder velocity output is supposed to be really smooth. >>> I'll double check it tonight. Any chance you can supply a >>> halscope trace of it looking bad on your machine? >> I'm using 2.3. >> >> Here's a trace of the commanded velocity (after going through limit3), >> encoder velocity (*60) and the lowpass output. >> >> http://www.franksworkshop.com.au/img_bin/Velocity.png >> >> The encoder scale is 12000; 12000 pulses representing 1 revolution. The >> encoder velocity output is then multiplied by 60 to give rpm. The graph >> shows acceleration to 20rpm and stop. > > Wow, that looks terrible.
Here's a prettier picture. This has the Step & Dir pins of a stepgen in quadrature mode hooked up with a pair of wires to the A and B pins of an encoder. The scales of the stepgen and the encoder are off, but the curves look the same. This is with 2.3. <http://highlab.com/~seb/emc2/good-encoder.png> -- Sebastian Kuzminsky the garage is my happy place ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
