发明申请
- 专利标题: Control Systems and Methods for Compensating for Effects of a Stage Motor
- 专利标题(中): 补偿电动机效果的控制系统和方法
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申请号: US12406322申请日: 2009-03-18
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公开(公告)号: US20100237819A1公开(公告)日: 2010-09-23
- 发明人: Michael B. Binnard , Scott Coakley , Douglas C. Watson , Pai-Hsueh Yang
- 申请人: Michael B. Binnard , Scott Coakley , Douglas C. Watson , Pai-Hsueh Yang
- 申请人地址: JP Tokyo
- 专利权人: NIKON CORPORATION
- 当前专利权人: NIKON CORPORATION
- 当前专利权人地址: JP Tokyo
- 主分类号: G05B11/36
- IPC分类号: G05B11/36
摘要:
Embodiments of the invention compensate for one or more effects of a stage motor in a precision stage device. A feedforward module receives an input signal corresponding to the effect of the motor and generates a feedforward control signal that can be used to modify a motor control signal to compensate for the effect of the motor. In some embodiments, a control system is provided to compensate for a back-electromotive force generated by a motor, while in other embodiments, a control system may compensate for an inductive effect of a motor. Embodiments of the invention may be useful in precision stage devices, for example, lithography devices such as steppers and scanners.
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