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- Title
一种进给伺服系统非线性PID 交叉耦合控制.
- Authors
路勇良; 赵军; 李莉莉; 张振; 刘青华
- Abstract
Improving the contour following performance of multi-axis servo system is one of the most important applications of modern CNC machining process. As the traditional cross-coupled control method has poor contour tracking accuracy for free-curve trajectory, and the traditional PID control system has poor disturbance rejection and robustness, an integrated control strategy of crosscoupled contour error compensation was proposed based on active disturbance rejection control, which consisted of a novel non-linear PID (NLPID) for position loop feedback control and contour error compensation, position servo controller TNP-ADRC and a variable gain cross-coupled controller based on NLPID. The modification of contour error during square wave signal tracking and standard circular contour processing was simulated in the MATLAB/Simulink environment. The simulation results demonstrate that this method can greatly improve the contour processing precision of multi-axis motion control systems while also can effectively enhance the robustness of the system and disturbance rejection capabilities compared to the conventional PID cross-coupled control.
- Subjects
NUMERICAL control of machine tools; SQUARE waves
- Publication
Machine Tool & Hydraulics, 2023, Vol 51, Issue 19, p46
- ISSN
1001-3881
- Publication type
Article
- DOI
10.3969/j.issn.1001-3881.2023.19.007