抄録
This paper deals with the evaluation and analysis of the relation between two different materials of the encoder's slit disk and angle precision. We found that when a glass slit disk was used, the encoder had twice the angle precision as when PET (Polyethylene terephthalate) was the material, we also obtained the relation between dispersion of the slit width and accuracy of the encoder. This, tern in, this paper is useful for deciding the material selection of the slit disk and the specification of encoder's precision.
