To suppress control deviation to 0 by performing correction according to control deviation arithmetic operation and correction using a correction value table within a closed loop of a negative feedback control type rotation signal processor of the closed loop.
According to an output method and apparatus for a digital angle output signal, on a stage of control deviation arithmetic operation [ε=K×sin(θ-φ)] within a closed loop (200), digital correction is performed on an angle error of a rotation angle detector (12) and an angle error caused by an error signal generated in an arithmetic process at a rotation signal processor (14). Further, when an angle dependent error [▵θ(θ)] exists in a digital angle output signal (φ), the error [▵θ(θ)] is stored in a correction table (52a) in the closed loop (200) beforehand and used.
Kajinami order
Masahiro Taguchi