The servo drive is a closed loop system, and excessive gain in the feedback loop causes a high frequency vibration which is what you hear in the video. It's just like if you stand in front of a speaker holding a microphone.
@@lishuai8 According to what the demonstrator said it sounds like the when the load is at the servo motor end, the drive screw is not as well supported therefore more susceptive to high frequency vibrations.
but as long as i understanding by considering the system as a double mass model it should be the far end from the motor that is more prone to vibration due to the longer connecting bead screw for motion transmission resulting lower rigidity
Both ends of the ball screw inside the CKK module are supported; one end by an double row angular contact thrust bearing and the other by two deep groove ball bearings. It is possible (as demonstrated!) to still have excessive noise from unstable servo tuning with both ends of the screw supported.
