Active control of the machine tool chatter which positions the cutting tool relative to the workpiece is often limited in its performance due to either actuator dynamics or feedback controller form. When Electro-hydraulic actuator is used, a PID control law is used to improve the cutting performance of a controlled machine tool system for stability and noise attenuation.
The performance is analyzed by Regeneration spectrum and Bode plot, and confirmed by computer simulation and experiment.
It is shown that PD and PID controller can be effectively used to improve such performance even when the actuator limit the dynamic behavior of the controlled machining system.
