Study on Repetitive PID Control of Linear Motor in Wafer Stage of Lithography

被引:8
|
作者
Hou, Bo-jie [1 ]
Gao, Jian-she [1 ]
Li, Xiao-qing
Zhou, Yun-fei
机构
[1] Zhengzhou Univ, Sch Mech Engn, Zhengzhou 450001, Peoples R China
关键词
repetitive control; lithography; wafer stage; linear motor; PID control; SERVO SYSTEM; DESIGN;
D O I
10.1016/j.proeng.2012.01.585
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A 'Repetitive + PID + feedforward' control mode is proposed to improve the trajectory-tracking performance of linear motors in wafer stage of lithography. The positioning error of linear motor is decreased greatly compared to PID control and 'PID + feedforward' control. The contradiction of high speed and high positioning accuracy has been solved. The results of MATLAB simulation and experiments demonstrated the effectiveness of the proposed methods. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology
引用
收藏
页码:3863 / 3867
页数:5
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