How do I correct for backlash in my leadscrew coupling between the rotary motor and linear stage?
Galil controllers actually accept input from two different encoders per servo axis allowing you to have a linear encoder on your stage and a rotary encoder on your motor. Galil controllers provide special compensation for dual loop systems where the position loop is closed with the load encoder and the damping terms are derived from the motor encoder. This method provides smooth and accurate control along the motion path regardless of backlash.
