> did you test limit2 and limit3, or just limit3? I'm not sure whether > second-derivative limiting (since command is speed, I guess that makes > it a jerk limit) is useful for spindle speed, and it would be nice to > hear real-world results.
Just limit3. I used the basic motion equations s=vt and v=at to estimate maxs, maxv and maxa to accelerate the spindle from 0 to 1500 in 3 seconds. It worked nicely. After configuring and being happy with the results, it suddenly stopped working and I spent the rest of the day trying to repair it. My problem was at low speeds, with the encoder.velocity being all over the place. I used lowpass, and got good enough results. Is there a component that will smooth out a curve? A moving average? ------------------------------------------------------------------------------ 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
