| 摘要 |
PROBLEM TO BE SOLVED: To enable the output value of an encoder to be corrected faster with higher accuracy.SOLUTION: The present invention provides an information processing device including a rotation angle calculation unit for finding, on the basis of a two-phase sinusoidal signal that is an output value of an output shaft encoder provided on an output shaft connected to an input shaft via a reduction gear, an approximate secondary curve that is a secondary curve approximated to the two-phase sinusoidal signal, and thereby calculating the rotation angle of the output shaft, the rotation angle calculation unit assuming that the output values of the output shaft encoder at a plurality of measurement points exist on the same secondary curve as it calculates the approximate secondary curve.SELECTED DRAWING: Figure 8 |
