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SELF-ADAPTATION FEED-FORWARD CONTROL ADJUSTMENT FOR MOTION SYSTEM, AND LITHOGRAPHY EQUIPMENT HAVING SUCH MOTION SYSTEM
SELF-ADAPTATION FEED-FORWARD CONTROL ADJUSTMENT FOR MOTION SYSTEM, AND LITHOGRAPHY EQUIPMENT HAVING SUCH MOTION SYSTEM
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机译:运动系统的自适应自适应前馈控制调整以及具有这种运动系统的光刻设备
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摘要
PROBLEM TO BE SOLVED: To provide a system that controls a high-precision motion such as a stepping and scanning operation of a lithography projection apparatus, i.e., a flexible control system that combines lower feed-forward control and iterative learning control with no need of manual adjustment while being simple, plus being adaptive to a slow change of a motion system.;SOLUTION: This motion control system takes into consideration a snap s, a jerk j, an accelerated velocity a, and a velocity v that are all the targets of control, begins respective feed-forward coefficients kfs, kfj, kfa, and kfv with initial settings, and learns until there will be no difference between a desired motion and a real motion, repeating updates. This will enable feed-forward adjustment to be automated, and to be easily executed by being combined with existing motion control software, and will eliminate manual adjustment steps, and adapt the system to a slow change since it is continuously updated.;COPYRIGHT: (C)2006,JPO&NCIPI
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