Theory Analysis and Performance Optimization of CNC Machine Tool Servo-driven system

摘要

The servo-driven system built a bridge between the numerical control device and machine tools and the robustness,rapidity and accuracy of CNC system are highly determinate by it.In this paper,a representative servo control module of CNC system will be addressed.Based on that,the mathematical models of close-loop controls with current-loop (integral element),position-loop (proportional element),speed-loop (derivative element) and feedforward control are established.The effect of static and dynamic performances are analyzed with the tuning parameters of each close-loop controller and the experimental verification are performed using the tool of SERVO GUIDE software.