| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve responsiveness of electric signal in a magnetic rotary link for transmitting and receiving the electric signal in no contact by combination of a magnetic field generated by current and a magnetoelectric conversion device through a rotary mechanism. <P>SOLUTION: In the magnetic rotary link, a first coil that forms a circular current path concentric to the center of a rotating shaft is disposed on the fixed side of the rotating mechanism, the magnetoelectric conversion device is disposed on the rotating side with a gap rotatable along the circumferential part of the coil, and a second coil that forms a circular current path concentric to the center of the rotating shaft is disposed on the fixing side so as to nip the magnetoelectric conversion device in the rotating shaft direction. An input signal current is flowed to the two coils so that magnetic fields interlinked with the magnetoelectric conversion device, out of magnetic fields generated in the respective coils, are added, and magnetic fields interlinked with the respective coils are subtracted, and the magnetic field generated by the current is detected by the magnetoelectric conversion device through the gap. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
