Tracking and contour error control in CNC servo systems

2005 ◽  
Vol 45 (3) ◽  
pp. 301-326 ◽  
Author(s):  
R. Ramesh ◽  
M.A. Mannan ◽  
A.N. Poo
Keyword(s):  
Error Control ◽  
Contour Error ◽  
Servo Systems ◽  
Contour Error Control

Adaptive Error Control Algorithm for High Speed Two-Axis CNC Contouring

2013 ◽  
Vol 584 ◽  
pp. 149-153
Author(s):  
Jing Chuan Dong ◽  
Tai Yong Wang ◽  
Yan Yu Ding ◽  
Yu Long Cui
Keyword(s):  
High Speed ◽  
Control Algorithm ◽  
Error Control ◽  
Tool Path ◽  
Cnc Machining ◽  
Numerical Control ◽  
Contour Error ◽  
Curvature Radius ◽  
Contour Error Control ◽  
Cnc Controller

The computerized numerical control (CNC) machining program usually contains a large number of small line segments. The CNC controller must generate a smooth and optimized motion profile to achieve high speed and high precision machining. This paper proposed an adaptive contour error control algorithm. The curvature radius of the tool path is obtained by analyzing the geometry relationship. The algorithm uses the curvature information and a simplified servo error model to realize contour error estimation and adaptive control. The target feet rate filter (TFF) and planning unit merging (PUM) are introduced to obtain a smooth profile. Experiments result demonstrated the efficiency of the proposed algorithm.

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