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Published in:
2008 | OriginalPaper | Chapter
PID Control System
Published in: Theory and Design of CNC Systems
Publisher: Springer London
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The information of a program block for moving the axis of a machine tool passes sequentially through the interpreter, the interpolator, and the Acc/Dec controller before being finally transmitted to the position controller. The position controller has the displacement at each interpolation interval from the interpolator as input and performs feedback control to minimize the position error. In this chapter, the Proportional Integral Derivative (PID) controller, which is widely used in industry, will be introduced and gain tuning for PID control will be addressed. In addition, the feedforward controller for high-speed applications will be introduced.