I am working with a ball screw mechanism driven by a brushless dc motor with an encoder mounted on the load side. We are using a PID position controller with tuning settings by optimization however the ball screw keeps oscillating around the reference position. We are thinking it is caused by the backlash and we accept the precision reduction caused by it. The only thing we would like to have is a non-oscillating response. Is there any trick/technique or any source that we can get an idea of?
Thanks in advance,