Re: Lets talk about encoders
Originally Posted by
Al_The_Man
Galil have a video explaining how a PID loop is tuned when implementing this arrangement and there is backlash present, the PID loop tuning is spread between the encoder and the scale.
Al.
This is really interesting Al. I went looking and couldn't seem to find that video, any idea what keywords I should use? Or if you have any other info on it, I'd love to hear.
Are they doing an /inside/ PID loop between the motor and the encoder, and an /outside/ PID loop between that loops setpoint and the scale? Or something else?
James hosts the single best wiki page about steppers for CNC hobbyists on the net:
http://www.piclist.com/techref/io/steppers.htm Disagree? Tell him what's missing! ,o)