| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique having high redundancy to failures and capable of detecting an absolute angle at high accuracy. <P>SOLUTION: A VR resolver 120 and an MR sensor 114 are attached to a shaft 103, angle multiplication factors of the VR resolver 120 and the MR sensor 114 are set to 2 or more, and a difference of the angle multiplication factors between the VR resolver 120 and the MR sensor 114 is set to 1. An absolute angle of the shaft 103 is calculated from a difference between an angle calculated from an output of the VR resolver 120 and an angle obtained from an output of the MR sensor 114. Since failure modes of the VR resolver 120 and the MR sensor 114 are mutually different, redundancy to failures can be secured. <P>COPYRIGHT: (C)2013,JPO&INPIT |
