| 摘要 |
<p>An angle of rotation detection device includes an electrical angle detector (resolver (12) and R/D converter (14)) having the electrical angle of 360° set smaller than the mechanical angle of 360°, and providing a two-phase encoder signal corresponding to the electrical angle of a rotor; a two-phase encoder counter (41) counting a two-phase encoder signal, and providing a digital value corresponding to the electrical angle, and a multiplication factor detector (42) detecting which position of the mechanical angle the electrical angle indicated by the signal output from the detector corresponds to, based on a change of the count value from the two-phase encoder counter. Thus, there can be provided an angle of rotation detection device that can identify the position of the mechanical angle while using the two-phase encoder output.</p> |
