LI Ming-ming, GONG Zhen-bang, CHENG Wei-ming, et al. Research of dynamic error compensation for nano-positioning system based on grey model[J]. Optics and precision engineering, 2006, 14(1): 89-94.
LI Ming-ming, GONG Zhen-bang, CHENG Wei-ming, et al. Research of dynamic error compensation for nano-positioning system based on grey model[J]. Optics and precision engineering, 2006, 14(1): 89-94.DOI:
For a nano-stage worked in the way of multi-positions and single step
the grey model can be used to compensate the systemic errors and random errors simultaneously. A method of improving the precision of grey model was discussed
and the GM(1
1) model with equal dimension
new-information and improved background value was established. By discussing of one step prediction using the positioning step of 5 μm
the model proved to be high prediction precision. The compensation tests with 5 μm and 3 μm positioning steps proved that the positioning errors of the stage are less than 40 nm. The effectiveness of grey model is testified used in dynamic positioning errors prediction and compensation. For having the strong points the grey model needs less modeling data and compu ting works
so that it is greatly suitable for time-variable precise positioning systems.
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references
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