Originally Posted by
speedydumpster
..... I was wondering if anyone can teach me how to tune a servo within +- one encoder count.......
.....Right now I have the system tuned to +-20 counts, and the system is very stable. Counts per inch: 8000ppr * 2 * 5 = 80000
Resoluton = 20 counts / 80000 = .00025
What I was thinking of doing though is experimenting with some linear scales though, and some of those are only .00025" resolution, meaning that if I did +-20 counts, my overall control resolution would go to .005", which would not give a good part........
.....I learned that you have to tune the P and D first, then tune the feed forwards and then the I, but I wasn't able to get it to +-1 encoder count.....