Originally posted by Dan S
If your using belt drive isn't it better to hook the encoder to the screw, and not the servo?
-Dan |
You might get problems with chasing if you hook the encoder to the screw, unless you have a backlash-free coupling between motor and screw.
I.e. the servo driver sees a position error and commands the motor to compensate, the motor compensates and then the position error changes sign, and the motor has to compensate in the opposite direction. This is normal with servos but if you have backlash between motor and encoder the motor will beat back and forth; you will get nasty vibrations and it might overheat the motor.
Arvid