Vibration Abatement:

Vibration abatement is the process by which the actuation system is excited in such a manor as to reduce the amplitude of the vibration between the tool and the workpiece. Different control measures can be used for this. A popular one is rate feedback, where the rate of change of position is fed through a simple amplifier and into the actuation system. An interupted cutting process benefits from "active damping". Interupted cutting occurs whenever the tool leaves contact with the workpiece, such as a keyway. The figures below show interupted cutting and the change in the surface profiles that the actuator has. The amplitude in the surface finish is reduced for the control action.



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